TY  - CONF
AU  - Obradović, Marko
AU  - Karličić, Nikola
AU  - Todorović, Dušan
AU  - Radić, Dejan
AU  - Jovović, Aleksandar
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7082
AB  - U cilju dobijanja podataka o uticaju sadržaja vlage na meljvost ugljeva izvršena su eksperi-mentalna istraživanja. Eksperiment je obuhvatio šest uzoraka ugljeva kolubarskog basena. Izbor uzoraka je izvršen u zavisnosti od eksperimentom dobijenih vrednosti Hadrgrove indeksa meljivosti (HGI)  sa  ciljem  da  se  pokrije  celokupna  oblast  eksperimentalno  dobijenih  vrednosti  HGI.  Pored određivanja HGI, a sve uzorke je izvršena tehnička, organo-geoemijska i petrografska analiza.Ligniti su u vlažnom stanju po svojoj prirodi žilavi, mekani i masni. Snižavanjem sadržaja vlage ligniti postaju krhkiji. Iz ovog razloga, vrednosti HGI imaju različite vrednosti ukoliko se određuju pri različitim sadržajima vlage.Hardgrove  indeks meljivosti ugljeva (HGI)  ima nelinearnu  zavisnost od udela  vlage  u uglju. Sve krive imaju dve prevojne tačke, jedan minimum i jedan maksimum vrednosti HGI u ispitivanoj oblasti. Minimalne vrednosti HGI ima u intervalu 15 –22% masenog udela ukupne vlage u uglju, dok maksimalne vrednosti HGI ima za sadržaj ukupne vlage 5 –13%.
AB  - In order toobtain data on the impact of moisture content on the grindability of coals, experi-mental  research  was  conducted.  The  experiment  included  six  samples  of  coal  from  the  Kolubara basin.  The  samples  were  selected  based  on  experimentally  obtained  values  of  their  Hardgrove grindability index (HGI), in order to cover the entire range of experimental HGI values. In addition to  determining  the  HGI,  proximate,  organo-geochemical,  and  petrographic  analyses  were  per-formed on all samples.Lignites are naturally tough, soft, and greasy when in a moist state. By reducing the moisture content, lignites become more brittle. For this reason, HGI values have different values depending on the moisture content at which they are determined.The Hardgrove grindability index of coal (HGI) has a nonlinear dependence on the moisture content of the coal. All curves have two inflection points, one minimum and one maximum value of HGI in the tested range. The minimum values of HGI are in the range of 15 –22% of the mass frac-tion of total moisture in coal, while the maximum values of HGI are for a total moisture content of 5 –13%.
PB  - Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS)
C3  - Zbornik Međunarodnog kongresa o procesnoj industriji – Procesing 2023
T1  - Uticaj sadržaja vlage na meljivost kolubarskih lignita
T1  - The influence of moisture content on the grindability of Kolubara lignites
EP  - 166
IS  - 1
SP  - 166
VL  - 36
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7082
ER  - 

@conference{
author = "Obradović, Marko and Karličić, Nikola and Todorović, Dušan and Radić, Dejan and Jovović, Aleksandar",
year = "2023",
abstract = "U cilju dobijanja podataka o uticaju sadržaja vlage na meljvost ugljeva izvršena su eksperi-mentalna istraživanja. Eksperiment je obuhvatio šest uzoraka ugljeva kolubarskog basena. Izbor uzoraka je izvršen u zavisnosti od eksperimentom dobijenih vrednosti Hadrgrove indeksa meljivosti (HGI)  sa  ciljem  da  se  pokrije  celokupna  oblast  eksperimentalno  dobijenih  vrednosti  HGI.  Pored određivanja HGI, a sve uzorke je izvršena tehnička, organo-geoemijska i petrografska analiza.Ligniti su u vlažnom stanju po svojoj prirodi žilavi, mekani i masni. Snižavanjem sadržaja vlage ligniti postaju krhkiji. Iz ovog razloga, vrednosti HGI imaju različite vrednosti ukoliko se određuju pri različitim sadržajima vlage.Hardgrove  indeks meljivosti ugljeva (HGI)  ima nelinearnu  zavisnost od udela  vlage  u uglju. Sve krive imaju dve prevojne tačke, jedan minimum i jedan maksimum vrednosti HGI u ispitivanoj oblasti. Minimalne vrednosti HGI ima u intervalu 15 –22% masenog udela ukupne vlage u uglju, dok maksimalne vrednosti HGI ima za sadržaj ukupne vlage 5 –13%., In order toobtain data on the impact of moisture content on the grindability of coals, experi-mental  research  was  conducted.  The  experiment  included  six  samples  of  coal  from  the  Kolubara basin.  The  samples  were  selected  based  on  experimentally  obtained  values  of  their  Hardgrove grindability index (HGI), in order to cover the entire range of experimental HGI values. In addition to  determining  the  HGI,  proximate,  organo-geochemical,  and  petrographic  analyses  were  per-formed on all samples.Lignites are naturally tough, soft, and greasy when in a moist state. By reducing the moisture content, lignites become more brittle. For this reason, HGI values have different values depending on the moisture content at which they are determined.The Hardgrove grindability index of coal (HGI) has a nonlinear dependence on the moisture content of the coal. All curves have two inflection points, one minimum and one maximum value of HGI in the tested range. The minimum values of HGI are in the range of 15 –22% of the mass frac-tion of total moisture in coal, while the maximum values of HGI are for a total moisture content of 5 –13%.",
publisher = "Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS)",
journal = "Zbornik Međunarodnog kongresa o procesnoj industriji – Procesing 2023",
title = "Uticaj sadržaja vlage na meljivost kolubarskih lignita, The influence of moisture content on the grindability of Kolubara lignites",
pages = "166-166",
number = "1",
volume = "36",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7082"
}

Obradović, M., Karličić, N., Todorović, D., Radić, D.,& Jovović, A.. (2023). Uticaj sadržaja vlage na meljivost kolubarskih lignita. in Zbornik Međunarodnog kongresa o procesnoj industriji – Procesing 2023
Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS)., 36(1), 166-166.
https://hdl.handle.net/21.15107/rcub_machinery_7082

Obradović M, Karličić N, Todorović D, Radić D, Jovović A. Uticaj sadržaja vlage na meljivost kolubarskih lignita. in Zbornik Međunarodnog kongresa o procesnoj industriji – Procesing 2023. 2023;36(1):166-166.
https://hdl.handle.net/21.15107/rcub_machinery_7082 .

Obradović, Marko, Karličić, Nikola, Todorović, Dušan, Radić, Dejan, Jovović, Aleksandar, "Uticaj sadržaja vlage na meljivost kolubarskih lignita" in Zbornik Međunarodnog kongresa o procesnoj industriji – Procesing 2023, 36, no. 1 (2023):166-166,
https://hdl.handle.net/21.15107/rcub_machinery_7082 .

TY  - JOUR
AU  - Obradović, Marko
AU  - Karličić, Nikola
AU  - Todorović, Dušan
AU  - Radić, Dejan
AU  - Jovović, Aleksandar
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4672
AB  - Wood chips are often used as solid fuel in modern biomass boilers. Experiments were conducted on 22 boilers located in Serbia burning wood chips as fuel. The influence of wood chips characteristics is analyzed in relation to the flue gas losses and the thermal efficiency of the boiler. Measured useful heat output of the tested boilers was 460-2585 kW. Moisture content of the wood chips was 19.21-38.23% with a net calorific value of 10177-14139 kJ/kg and ash content of 0.84-3.59%. Thermal efficiency of the boilers was 88.78-94.06%, flue gas losses 5.84-11.13% and flue gas temperature 121.83-188.44 °C. Experimental research and analysis of the results showed that an increase in moisture content of wood chips lead to a decrease of net calorific value i.e., decrease in flue gas temperature. Moisture content of wood chips has an influence on both useful heat output and boiler thermal efficiency. The experimental results showed that for a given boiler construction, this impact is not negative. Based on regression analysis, mathematical expressions were derived for the calculation of thermal efficiency and flue gas losses. Throughout the experiments, pollutant emissions were measured, NOx, CO, and particulate matter.
T2  - Thermal Science
T1  - Experimental studies of wood chips charactristics influence on boiler performance and pollutant emissions
EP  - 132
IS  - 1
SP  - 121
VL  - 27
DO  - 10.2298/TSCI2301121O
ER  - 

@article{
author = "Obradović, Marko and Karličić, Nikola and Todorović, Dušan and Radić, Dejan and Jovović, Aleksandar",
year = "2023",
abstract = "Wood chips are often used as solid fuel in modern biomass boilers. Experiments were conducted on 22 boilers located in Serbia burning wood chips as fuel. The influence of wood chips characteristics is analyzed in relation to the flue gas losses and the thermal efficiency of the boiler. Measured useful heat output of the tested boilers was 460-2585 kW. Moisture content of the wood chips was 19.21-38.23% with a net calorific value of 10177-14139 kJ/kg and ash content of 0.84-3.59%. Thermal efficiency of the boilers was 88.78-94.06%, flue gas losses 5.84-11.13% and flue gas temperature 121.83-188.44 °C. Experimental research and analysis of the results showed that an increase in moisture content of wood chips lead to a decrease of net calorific value i.e., decrease in flue gas temperature. Moisture content of wood chips has an influence on both useful heat output and boiler thermal efficiency. The experimental results showed that for a given boiler construction, this impact is not negative. Based on regression analysis, mathematical expressions were derived for the calculation of thermal efficiency and flue gas losses. Throughout the experiments, pollutant emissions were measured, NOx, CO, and particulate matter.",
journal = "Thermal Science",
title = "Experimental studies of wood chips charactristics influence on boiler performance and pollutant emissions",
pages = "132-121",
number = "1",
volume = "27",
doi = "10.2298/TSCI2301121O"
}

Obradović, M., Karličić, N., Todorović, D., Radić, D.,& Jovović, A.. (2023). Experimental studies of wood chips charactristics influence on boiler performance and pollutant emissions. in Thermal Science, 27(1), 121-132.
https://doi.org/10.2298/TSCI2301121O

Obradović M, Karličić N, Todorović D, Radić D, Jovović A. Experimental studies of wood chips charactristics influence on boiler performance and pollutant emissions. in Thermal Science. 2023;27(1):121-132.
doi:10.2298/TSCI2301121O .

Obradović, Marko, Karličić, Nikola, Todorović, Dušan, Radić, Dejan, Jovović, Aleksandar, "Experimental studies of wood chips charactristics influence on boiler performance and pollutant emissions" in Thermal Science, 27, no. 1 (2023):121-132,
https://doi.org/10.2298/TSCI2301121O . .

TY  - JOUR
AU  - Karličić, Nikola
AU  - Petrović, Milan M.
AU  - Radić, Dejan
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4670
AB  - This paper will validate two basic concepts of numerical models for prediction of
pressure change along the transport pipeline in the case of long distance and
high capacity lignite ash pneumatic conveying. Application of various friction
factor correlations and variation of given parameter, led to the total of fourteen
different numerical models and program codes in FORTRAN. The input data for
numerical models are based on comprehensive experimental research of high ca-
pacity and long distance Kolubara lignite fly ash pneumatic conveying system
within 620 MWe thermal power plant unit under operating conditions. Numerical
simulation results are validated against experimental data and subjected to sta-
tistical analysis methods. The functional dependence obtained by the least
squares method was evaluated using mean squared deviation and correlation ra-
tio. The predicted pressure changes show the best agreement, with the measured
decrease of pressure amplitudes along the transport pipelines, for the model
based on the momentum balance of air-ash mixture flow and friction factor cor-
relation given by Dogin and Lebedev for the parameter A = 1.4∙10–6. This model
achieved the best correlation ratio of 93.99% for Pipeline 1 and 91.33% for
Pipeline 2, as well as the best mean squared deviation of 9.58% for Pipeline 1
and 13.66% for Pipeline 2. Also, the fanning friction factor values are fully con-
sistent with previously examined cases available in the literature. Numerical sim-
ulation model can be used for prediction of the ash pneumatic conveying capacity and pressure drop for the specified transport pipeline.
PB  - Beograd : Institut za nuklearne nauke Vinča
T2  - Thermal Science
T1  - Validation of numerical models for prediction of pressure drop in high capacity long distance lignite fly ash pneumatic conveying
EP  - 45
IS  - 1A
SP  - 33
VL  - 27
DO  - 10.2298/TSCI2301033K
ER  - 

@article{
author = "Karličić, Nikola and Petrović, Milan M. and Radić, Dejan",
year = "2023",
abstract = "This paper will validate two basic concepts of numerical models for prediction of
pressure change along the transport pipeline in the case of long distance and
high capacity lignite ash pneumatic conveying. Application of various friction
factor correlations and variation of given parameter, led to the total of fourteen
different numerical models and program codes in FORTRAN. The input data for
numerical models are based on comprehensive experimental research of high ca-
pacity and long distance Kolubara lignite fly ash pneumatic conveying system
within 620 MWe thermal power plant unit under operating conditions. Numerical
simulation results are validated against experimental data and subjected to sta-
tistical analysis methods. The functional dependence obtained by the least
squares method was evaluated using mean squared deviation and correlation ra-
tio. The predicted pressure changes show the best agreement, with the measured
decrease of pressure amplitudes along the transport pipelines, for the model
based on the momentum balance of air-ash mixture flow and friction factor cor-
relation given by Dogin and Lebedev for the parameter A = 1.4∙10–6. This model
achieved the best correlation ratio of 93.99% for Pipeline 1 and 91.33% for
Pipeline 2, as well as the best mean squared deviation of 9.58% for Pipeline 1
and 13.66% for Pipeline 2. Also, the fanning friction factor values are fully con-
sistent with previously examined cases available in the literature. Numerical sim-
ulation model can be used for prediction of the ash pneumatic conveying capacity and pressure drop for the specified transport pipeline.",
publisher = "Beograd : Institut za nuklearne nauke Vinča",
journal = "Thermal Science",
title = "Validation of numerical models for prediction of pressure drop in high capacity long distance lignite fly ash pneumatic conveying",
pages = "45-33",
number = "1A",
volume = "27",
doi = "10.2298/TSCI2301033K"
}

Karličić, N., Petrović, M. M.,& Radić, D.. (2023). Validation of numerical models for prediction of pressure drop in high capacity long distance lignite fly ash pneumatic conveying. in Thermal Science
Beograd : Institut za nuklearne nauke Vinča., 27(1A), 33-45.
https://doi.org/10.2298/TSCI2301033K

Karličić N, Petrović MM, Radić D. Validation of numerical models for prediction of pressure drop in high capacity long distance lignite fly ash pneumatic conveying. in Thermal Science. 2023;27(1A):33-45.
doi:10.2298/TSCI2301033K .

Karličić, Nikola, Petrović, Milan M., Radić, Dejan, "Validation of numerical models for prediction of pressure drop in high capacity long distance lignite fly ash pneumatic conveying" in Thermal Science, 27, no. 1A (2023):33-45,
https://doi.org/10.2298/TSCI2301033K . .

TY  - CONF
AU  - Vladić, Mihailo
AU  - Manić, Nebojša
AU  - Karličić, Nikola
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7081
AB  - Konzumiranje kafe je dnevni ritual rasprostranjen širom sveta. Procenjeno je da se u svetu popije čak 2,25 milijardi šoljica ovog napitka u jednom danu, čime se proizvodi velika količinu ot-pada. U radu je ispitan energetski potencijal ovog otpada metodom tehničke i termalne analize. Rezultati ispitivanja su pokazali niske vrednosti HGI, nizak sadržaj volatila i koksnog ostatka usled velike količine vlage
AB  - Drinking coffee is a daily ritual all over the world. It is estimated that as many as 2.25 billion cups of this beverage are consumed in one day, which produces a large amount of waste. The paper examines the energy potential of this waste using the method of technical and thermal analysis. The test results showed low HGI values, low content of volatiles and coke due to a large amount of moisture.
PB  - Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS)
C3  - Zbornik Međunarodnog kongresa o procesnoj industriji – Procesing, 2023
T1  - Ispitivanje energetskog potencijala otpada od kafe
T1  - Examination of spent coffee grounds energy potential
EP  - 53
IS  - 1
SP  - 45
VL  - 36
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7081
ER  - 

@conference{
author = "Vladić, Mihailo and Manić, Nebojša and Karličić, Nikola",
year = "2023",
abstract = "Konzumiranje kafe je dnevni ritual rasprostranjen širom sveta. Procenjeno je da se u svetu popije čak 2,25 milijardi šoljica ovog napitka u jednom danu, čime se proizvodi velika količinu ot-pada. U radu je ispitan energetski potencijal ovog otpada metodom tehničke i termalne analize. Rezultati ispitivanja su pokazali niske vrednosti HGI, nizak sadržaj volatila i koksnog ostatka usled velike količine vlage, Drinking coffee is a daily ritual all over the world. It is estimated that as many as 2.25 billion cups of this beverage are consumed in one day, which produces a large amount of waste. The paper examines the energy potential of this waste using the method of technical and thermal analysis. The test results showed low HGI values, low content of volatiles and coke due to a large amount of moisture.",
publisher = "Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS)",
journal = "Zbornik Međunarodnog kongresa o procesnoj industriji – Procesing, 2023",
title = "Ispitivanje energetskog potencijala otpada od kafe, Examination of spent coffee grounds energy potential",
pages = "53-45",
number = "1",
volume = "36",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7081"
}

Vladić, M., Manić, N.,& Karličić, N.. (2023). Ispitivanje energetskog potencijala otpada od kafe. in Zbornik Međunarodnog kongresa o procesnoj industriji – Procesing, 2023
Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS)., 36(1), 45-53.
https://hdl.handle.net/21.15107/rcub_machinery_7081

Vladić M, Manić N, Karličić N. Ispitivanje energetskog potencijala otpada od kafe. in Zbornik Međunarodnog kongresa o procesnoj industriji – Procesing, 2023. 2023;36(1):45-53.
https://hdl.handle.net/21.15107/rcub_machinery_7081 .

Vladić, Mihailo, Manić, Nebojša, Karličić, Nikola, "Ispitivanje energetskog potencijala otpada od kafe" in Zbornik Međunarodnog kongresa o procesnoj industriji – Procesing, 2023, 36, no. 1 (2023):45-53,
https://hdl.handle.net/21.15107/rcub_machinery_7081 .

TY  - CONF
AU  - Karličić, Nikola
AU  - Radenković, Darko
AU  - Obradović, Marko
AU  - Todorović, Dušan
AU  - Jovović, Aleksandar
AU  - Radić, Dejan
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7080
AB  - U radu je prikazan numerički proračun pada pritiska pri pneumatskom transportu letećeg pepela  iz  termoelektrane.  Cilj  istraživanja  je  verifikacija  razvijenog  modela  upoređivanjem numeričkih rezultata sa merenjima pritiska duž cevovoda. Numerički model je razvijen na osnovu obimnih  eksperimentalnih istraživanja  sprovedenih  na  sistemu  pneumatskog  transporta  pepela kolubarskog  lignita,  velikog  kapaciteta  i  velike  dužine.  Ojler-Ojlerov  pristup  omogućava sveobuhvatno istraživanje složenih pojava pri pneumatskom transportu, uzimajući u obzir dvofaznu prirodu  sistema  i  pružajući  mogućnost  sagledavanja  ponašanje  čestica,  pada  pritiska  i  drugih ključnih parametara. Formiranje mreže za Ojler-Ojlerove  simulacije  u  OpenFOAM-u  predstavlja složen  proces,  što  uključuje  definisanje  računskog  domena,  generisanje  odgovarajuće  mrežne strukture i postavljanje odgovarajućih graničnih uslova i za gasnu i za čvrstu fazu. Potrebno je pažljivo  razmatranje  da  bi  se  što  vernije  predstavila  geometrija  i  definisali  svi  parametri  u pneumatskim transportnim sistemima. Ojler-Ojlerove numeričke simulacije pneumatskog transporta pepela  u  kosoj  cevi  su  sprovedene  u  OpenFOAM-u, koristeći paket twoPhaseEulerFoam  solver. Numerička mreža je formirana kao O-mreža za deonicu cevovoda dužine 90 m, prečnika 0,2604 m i nagiba od 1,885 °. Sve ćelije mreže su značajno veće od prečnika čestica pepela. Rezultati numeričkih simulacija  u  pogledu  pada  pritiska  se  veoma  dobro  slažu  sa  eksperimentalnim  rezultatima  za ispitivani slučaj. Iako je Ojler-Ojlerov model izutno složen u smislu definisanja graničnih  uslova, pokazao se kao pouzdan za za razmatrani slučaj, odnosno za razmatrane uslove.
AB  - This paper presents a numerical calculation of pressure drop in pneumatic conveying of fly ash from a thermal power plant. The objective of this research is to verify the developed model by com-paring  the  numerical  results  with  pressure  measurements  taken  along  the  pipeline.  The  numerical model is developed based on extensive experimental research conducted on a high-capacity and long-distance pneumatic conveying system for Kolubara lignite ash. The Euler-Euler approach enables a comprehensive investigation of the complex dynamics involved in pneumatic conveying, considering the two-phase nature of the system and providing valuable insights into the particle behavior, pres-sure drop, and other key parameters. Creating a mesh for Euler-Euler simulations in OpenFOAM can be a complex process. It involves defining the computational domain, generating a suitable mesh structure, and ensuring proper boundary conditions for both the gas and solid phases. Careful con-sideration is required to accurately represent the geometry and capture the relevant flow physics in pneumatic conveying systems. In this study, Euler-Euler numerical simulations of pneumatic convey-ing of ash in an inclined pipe are conducted in OpenFOAM, using twoPhaseEulerFoam solver. Nu-merical mesh is generated as an O-grid for a pipeline section with a length of 90 m, a diameter of 0.2604 m, and an inclination of 1.885 °. All mesh cells are significantly larger than the ash diameter.
PB  - Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS)
C3  - Zbornik Međunarodnog Kongresa O Procesnoj Industriji – Procesing 2023
T1  - Numeričke simulacije pneumatskog transporta letećeg pepela iz termoelektrane koristeći OpenFOAM
T1  - Numerical simulations of fly ash pneumatic conveying from a thermalpower plant using OpenFOAM
EP  - 292
IS  - 1
SP  - 291
VL  - 36
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7080
ER  - 

@conference{
author = "Karličić, Nikola and Radenković, Darko and Obradović, Marko and Todorović, Dušan and Jovović, Aleksandar and Radić, Dejan",
year = "2023",
abstract = "U radu je prikazan numerički proračun pada pritiska pri pneumatskom transportu letećeg pepela  iz  termoelektrane.  Cilj  istraživanja  je  verifikacija  razvijenog  modela  upoređivanjem numeričkih rezultata sa merenjima pritiska duž cevovoda. Numerički model je razvijen na osnovu obimnih  eksperimentalnih istraživanja  sprovedenih  na  sistemu  pneumatskog  transporta  pepela kolubarskog  lignita,  velikog  kapaciteta  i  velike  dužine.  Ojler-Ojlerov  pristup  omogućava sveobuhvatno istraživanje složenih pojava pri pneumatskom transportu, uzimajući u obzir dvofaznu prirodu  sistema  i  pružajući  mogućnost  sagledavanja  ponašanje  čestica,  pada  pritiska  i  drugih ključnih parametara. Formiranje mreže za Ojler-Ojlerove  simulacije  u  OpenFOAM-u  predstavlja složen  proces,  što  uključuje  definisanje  računskog  domena,  generisanje  odgovarajuće  mrežne strukture i postavljanje odgovarajućih graničnih uslova i za gasnu i za čvrstu fazu. Potrebno je pažljivo  razmatranje  da  bi  se  što  vernije  predstavila  geometrija  i  definisali  svi  parametri  u pneumatskim transportnim sistemima. Ojler-Ojlerove numeričke simulacije pneumatskog transporta pepela  u  kosoj  cevi  su  sprovedene  u  OpenFOAM-u, koristeći paket twoPhaseEulerFoam  solver. Numerička mreža je formirana kao O-mreža za deonicu cevovoda dužine 90 m, prečnika 0,2604 m i nagiba od 1,885 °. Sve ćelije mreže su značajno veće od prečnika čestica pepela. Rezultati numeričkih simulacija  u  pogledu  pada  pritiska  se  veoma  dobro  slažu  sa  eksperimentalnim  rezultatima  za ispitivani slučaj. Iako je Ojler-Ojlerov model izutno složen u smislu definisanja graničnih  uslova, pokazao se kao pouzdan za za razmatrani slučaj, odnosno za razmatrane uslove., This paper presents a numerical calculation of pressure drop in pneumatic conveying of fly ash from a thermal power plant. The objective of this research is to verify the developed model by com-paring  the  numerical  results  with  pressure  measurements  taken  along  the  pipeline.  The  numerical model is developed based on extensive experimental research conducted on a high-capacity and long-distance pneumatic conveying system for Kolubara lignite ash. The Euler-Euler approach enables a comprehensive investigation of the complex dynamics involved in pneumatic conveying, considering the two-phase nature of the system and providing valuable insights into the particle behavior, pres-sure drop, and other key parameters. Creating a mesh for Euler-Euler simulations in OpenFOAM can be a complex process. It involves defining the computational domain, generating a suitable mesh structure, and ensuring proper boundary conditions for both the gas and solid phases. Careful con-sideration is required to accurately represent the geometry and capture the relevant flow physics in pneumatic conveying systems. In this study, Euler-Euler numerical simulations of pneumatic convey-ing of ash in an inclined pipe are conducted in OpenFOAM, using twoPhaseEulerFoam solver. Nu-merical mesh is generated as an O-grid for a pipeline section with a length of 90 m, a diameter of 0.2604 m, and an inclination of 1.885 °. All mesh cells are significantly larger than the ash diameter.",
publisher = "Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS)",
journal = "Zbornik Međunarodnog Kongresa O Procesnoj Industriji – Procesing 2023",
title = "Numeričke simulacije pneumatskog transporta letećeg pepela iz termoelektrane koristeći OpenFOAM, Numerical simulations of fly ash pneumatic conveying from a thermalpower plant using OpenFOAM",
pages = "292-291",
number = "1",
volume = "36",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7080"
}

Karličić, N., Radenković, D., Obradović, M., Todorović, D., Jovović, A.,& Radić, D.. (2023). Numeričke simulacije pneumatskog transporta letećeg pepela iz termoelektrane koristeći OpenFOAM. in Zbornik Međunarodnog Kongresa O Procesnoj Industriji – Procesing 2023
Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS)., 36(1), 291-292.
https://hdl.handle.net/21.15107/rcub_machinery_7080

Karličić N, Radenković D, Obradović M, Todorović D, Jovović A, Radić D. Numeričke simulacije pneumatskog transporta letećeg pepela iz termoelektrane koristeći OpenFOAM. in Zbornik Međunarodnog Kongresa O Procesnoj Industriji – Procesing 2023. 2023;36(1):291-292.
https://hdl.handle.net/21.15107/rcub_machinery_7080 .

Karličić, Nikola, Radenković, Darko, Obradović, Marko, Todorović, Dušan, Jovović, Aleksandar, Radić, Dejan, "Numeričke simulacije pneumatskog transporta letećeg pepela iz termoelektrane koristeći OpenFOAM" in Zbornik Međunarodnog Kongresa O Procesnoj Industriji – Procesing 2023, 36, no. 1 (2023):291-292,
https://hdl.handle.net/21.15107/rcub_machinery_7080 .

TY  - CONF
AU  - Karličić, Nikola
AU  - Obradović, Marko
AU  - Todorović, Dušan
AU  - Radić, Dejan
AU  - Jovović, Aleksandar
AU  - Stanojević, Miroslav
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7092
AB  - Fosfati su od suštinskog značaja u oblasti poljoprivrede i oko 95% svetske proizvodnje se ko-risti u industriji đubriva. Nakon procesa mlevenja, fosfat (kao i sve druge rasute materijale) je neop-hodno transportovati na dalju preradu. Sistemi pneumatskog transporta uvek imaju prednost u od-nosu na mehaničke sisteme, pre svega zbog pogodnosti koje pružaju. Različiti tipovi fosfata, što važi i za ostale naizgled iste materijale, se mogu u velikoj meri razlikovati po svojim karakteristikama. Zbog toga je neophodno adekvatno razmotriti fizičke karakteristike rasutih materijala kako bi se ostvario pouzdan rad sistema pneumatskog transporta i kako bi se izbegli mogući problemi. U radu je razmatran problem u radu sistema pneumatskog transporta mlevenog fosfata.
AB  - Phosphates are essential in the agricultural sector and about 95% of the world production is used in fertilizer industry. After grinding, phosphate ore, as well as any other bulk material is re-quired to be transported to further processing. Pneumatic conveying systems are preferred over other mechanical systems due to their usage convenience. Different types of phosphate rocks, as well as other just seemingly the same materials, may widely differ in their characteristics. Therefore, physical properties of bulk material must be taken into the consideration to achieve reliable pneumatic con-veying system operation and avoid possible problems. This paper will address problems with pneu-matic conveying of ground phosphate that occurred in fertilizer production plant.
PB  - Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS)
C3  - Zbornik Međunarodnog kongresa o procesnoj industriji – Procesing, 2020
T1  - Uticaj granulometrijskog sastava materijala na odvijanje pneumatskog transporta na primeru mlevenog fosfata
T1  - Impact of particle size distribution of material on pneumatic conveying operation on example of ground phosphate
EP  - 63
IS  - 1
SP  - 63
VL  - 33
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7092
ER  - 

@conference{
author = "Karličić, Nikola and Obradović, Marko and Todorović, Dušan and Radić, Dejan and Jovović, Aleksandar and Stanojević, Miroslav",
year = "2022",
abstract = "Fosfati su od suštinskog značaja u oblasti poljoprivrede i oko 95% svetske proizvodnje se ko-risti u industriji đubriva. Nakon procesa mlevenja, fosfat (kao i sve druge rasute materijale) je neop-hodno transportovati na dalju preradu. Sistemi pneumatskog transporta uvek imaju prednost u od-nosu na mehaničke sisteme, pre svega zbog pogodnosti koje pružaju. Različiti tipovi fosfata, što važi i za ostale naizgled iste materijale, se mogu u velikoj meri razlikovati po svojim karakteristikama. Zbog toga je neophodno adekvatno razmotriti fizičke karakteristike rasutih materijala kako bi se ostvario pouzdan rad sistema pneumatskog transporta i kako bi se izbegli mogući problemi. U radu je razmatran problem u radu sistema pneumatskog transporta mlevenog fosfata., Phosphates are essential in the agricultural sector and about 95% of the world production is used in fertilizer industry. After grinding, phosphate ore, as well as any other bulk material is re-quired to be transported to further processing. Pneumatic conveying systems are preferred over other mechanical systems due to their usage convenience. Different types of phosphate rocks, as well as other just seemingly the same materials, may widely differ in their characteristics. Therefore, physical properties of bulk material must be taken into the consideration to achieve reliable pneumatic con-veying system operation and avoid possible problems. This paper will address problems with pneu-matic conveying of ground phosphate that occurred in fertilizer production plant.",
publisher = "Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS)",
journal = "Zbornik Međunarodnog kongresa o procesnoj industriji – Procesing, 2020",
title = "Uticaj granulometrijskog sastava materijala na odvijanje pneumatskog transporta na primeru mlevenog fosfata, Impact of particle size distribution of material on pneumatic conveying operation on example of ground phosphate",
pages = "63-63",
number = "1",
volume = "33",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7092"
}

Karličić, N., Obradović, M., Todorović, D., Radić, D., Jovović, A.,& Stanojević, M.. (2022). Uticaj granulometrijskog sastava materijala na odvijanje pneumatskog transporta na primeru mlevenog fosfata. in Zbornik Međunarodnog kongresa o procesnoj industriji – Procesing, 2020
Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS)., 33(1), 63-63.
https://hdl.handle.net/21.15107/rcub_machinery_7092

Karličić N, Obradović M, Todorović D, Radić D, Jovović A, Stanojević M. Uticaj granulometrijskog sastava materijala na odvijanje pneumatskog transporta na primeru mlevenog fosfata. in Zbornik Međunarodnog kongresa o procesnoj industriji – Procesing, 2020. 2022;33(1):63-63.
https://hdl.handle.net/21.15107/rcub_machinery_7092 .

Karličić, Nikola, Obradović, Marko, Todorović, Dušan, Radić, Dejan, Jovović, Aleksandar, Stanojević, Miroslav, "Uticaj granulometrijskog sastava materijala na odvijanje pneumatskog transporta na primeru mlevenog fosfata" in Zbornik Međunarodnog kongresa o procesnoj industriji – Procesing, 2020, 33, no. 1 (2022):63-63,
https://hdl.handle.net/21.15107/rcub_machinery_7092 .

TY  - CONF
AU  - Karličić, Nikola
AU  - Obradović, Marko
AU  - Todorović, Dušan
AU  - Petrović, Milan М.
AU  - Radić, Dejan
AU  - Jovović, Aleksandar
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7088
AB  - U radu je prikazan numerički proračun pada pritiska pri pneumatskom transportu letećeg pepela iz termoelektrane. Cilj istraživanja je verifikacija razvijenog modela upoređivanjem numeričkih rezultata sa merenjima pritiska duž cevovoda. Numerički model je razvijen na osnovu obimnih eksperimentalnih istraživanja sprovedenih na sistemu pneumatskog transporta pepela kolubarskog lignita, velikog kapaciteta i velike dužine. Ojler-Ojlerov pristup omogućava sveobuhvatno istraživanje složenih pojava pri pneumatskom transportu, uzimajući u obzir dvofaznu prirodu sistema i pružajući mogućnost sagledavanja ponašanje čestica, pada pritiska i drugih ključnih parametara. Formiranje mreže za Ojler-Ojlerove simulacije u OpenFOAM-u predstavlja složen proces, što uključuje definisanje računskog domena, generisanje odgovarajuće mrežne strukture i postavljanje odgovarajućih graničnih uslova i za gasnu i za čvrstu fazu. Potrebno je pažljivo razmatranje da bi se što vernije predstavila geometrija i definisali svi parametri u pneumatskim transportnim sistemima. Ojler-Ojlerove numeričke simulacije pneumatskog transporta pepela u kosoj cevi su sprovedene u OpenFOAM-u, koristeći paket twoPhaseEulerFoam solver. Numerička mreža je formirana kao O-mreža za deonicu cevovoda dužine 90 m, prečnika 0,2604 m i nagiba od 1,885 °. Sve ćelije mreže su značajno veće od prečnika čestica pepela. Rezultati numeričkih simulacija u pogledu pada pritiska se veoma dobro slažu sa eksperimentalnim rezultatima za ispitivani slučaj. Iako je Ojler-Ojlerov model izutno složen u smislu definisanja graničnih uslova, pokazao se kao pouzdan za za razmatrani slučaj, odnosno za razmatrane uslove.
AB  - This paper presents a numerical calculation of pressure drop in pneumatic conveying of fly ash from a thermal power plant. The objective of this research is to verify the developed model by com-paring the numerical results with pressure measurements taken along the pipeline. The numerical model is developed based on extensive experimental research conducted on a high-capacity and long-distance pneumatic conveying system for Kolubara lignite ash. The Euler-Euler approach enables a comprehensive investigation of the complex dynamics involved in pneumatic conveying, considering the two-phase nature of the system and providing valuable insights into the particle behavior, pres-sure drop, and other key parameters. Creating a mesh for Euler-Euler simulations in OpenFOAM can be a complex process. It involves defining the computational domain, generating a suitable mesh structure, and ensuring proper boundary conditions for both the gas and solid phases. Careful con-sideration is required to accurately represent the geometry and capture the relevant flow physics in pneumatic conveying systems. In this study, Euler-Euler numerical simulations of pneumatic convey-ing of ash in an inclined pipe are conducted in OpenFOAM, using twoPhaseEulerFoam solver. Nu-merical mesh is generated as an O-grid for a pipeline section with a length of 90 m, a diameter of 0.2604 m, and an inclination of 1.885 °. All mesh cells are significantly larger than the ash diameter.
PB  - Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS)
C3  - Zbornik Međunarodnog kongresa o procesnoj industriji – Procesing, 2022
T1  - Analiza korelacija za proračun koeficijenta trenja za formiranje numeričkog modela za proračun pada pritiska za slučaj pneumatskog transporta letećeg pepela lignita u termoenergetskim postrojenjima
T1  - Analysis of different correlations for the friction coefficient calculation to form a numerical model for the calculation of pressure drop in the case of lignite fly ash pneumatic transport in thermal power plants
EP  - 100
IS  - 1
SP  - 99
VL  - 35
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7088
ER  - 

@conference{
author = "Karličić, Nikola and Obradović, Marko and Todorović, Dušan and Petrović, Milan М. and Radić, Dejan and Jovović, Aleksandar",
year = "2022",
abstract = "U radu je prikazan numerički proračun pada pritiska pri pneumatskom transportu letećeg pepela iz termoelektrane. Cilj istraživanja je verifikacija razvijenog modela upoređivanjem numeričkih rezultata sa merenjima pritiska duž cevovoda. Numerički model je razvijen na osnovu obimnih eksperimentalnih istraživanja sprovedenih na sistemu pneumatskog transporta pepela kolubarskog lignita, velikog kapaciteta i velike dužine. Ojler-Ojlerov pristup omogućava sveobuhvatno istraživanje složenih pojava pri pneumatskom transportu, uzimajući u obzir dvofaznu prirodu sistema i pružajući mogućnost sagledavanja ponašanje čestica, pada pritiska i drugih ključnih parametara. Formiranje mreže za Ojler-Ojlerove simulacije u OpenFOAM-u predstavlja složen proces, što uključuje definisanje računskog domena, generisanje odgovarajuće mrežne strukture i postavljanje odgovarajućih graničnih uslova i za gasnu i za čvrstu fazu. Potrebno je pažljivo razmatranje da bi se što vernije predstavila geometrija i definisali svi parametri u pneumatskim transportnim sistemima. Ojler-Ojlerove numeričke simulacije pneumatskog transporta pepela u kosoj cevi su sprovedene u OpenFOAM-u, koristeći paket twoPhaseEulerFoam solver. Numerička mreža je formirana kao O-mreža za deonicu cevovoda dužine 90 m, prečnika 0,2604 m i nagiba od 1,885 °. Sve ćelije mreže su značajno veće od prečnika čestica pepela. Rezultati numeričkih simulacija u pogledu pada pritiska se veoma dobro slažu sa eksperimentalnim rezultatima za ispitivani slučaj. Iako je Ojler-Ojlerov model izutno složen u smislu definisanja graničnih uslova, pokazao se kao pouzdan za za razmatrani slučaj, odnosno za razmatrane uslove., This paper presents a numerical calculation of pressure drop in pneumatic conveying of fly ash from a thermal power plant. The objective of this research is to verify the developed model by com-paring the numerical results with pressure measurements taken along the pipeline. The numerical model is developed based on extensive experimental research conducted on a high-capacity and long-distance pneumatic conveying system for Kolubara lignite ash. The Euler-Euler approach enables a comprehensive investigation of the complex dynamics involved in pneumatic conveying, considering the two-phase nature of the system and providing valuable insights into the particle behavior, pres-sure drop, and other key parameters. Creating a mesh for Euler-Euler simulations in OpenFOAM can be a complex process. It involves defining the computational domain, generating a suitable mesh structure, and ensuring proper boundary conditions for both the gas and solid phases. Careful con-sideration is required to accurately represent the geometry and capture the relevant flow physics in pneumatic conveying systems. In this study, Euler-Euler numerical simulations of pneumatic convey-ing of ash in an inclined pipe are conducted in OpenFOAM, using twoPhaseEulerFoam solver. Nu-merical mesh is generated as an O-grid for a pipeline section with a length of 90 m, a diameter of 0.2604 m, and an inclination of 1.885 °. All mesh cells are significantly larger than the ash diameter.",
publisher = "Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS)",
journal = "Zbornik Međunarodnog kongresa o procesnoj industriji – Procesing, 2022",
title = "Analiza korelacija za proračun koeficijenta trenja za formiranje numeričkog modela za proračun pada pritiska za slučaj pneumatskog transporta letećeg pepela lignita u termoenergetskim postrojenjima, Analysis of different correlations for the friction coefficient calculation to form a numerical model for the calculation of pressure drop in the case of lignite fly ash pneumatic transport in thermal power plants",
pages = "100-99",
number = "1",
volume = "35",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7088"
}

Karličić, N., Obradović, M., Todorović, D., Petrović, M. М., Radić, D.,& Jovović, A.. (2022). Analiza korelacija za proračun koeficijenta trenja za formiranje numeričkog modela za proračun pada pritiska za slučaj pneumatskog transporta letećeg pepela lignita u termoenergetskim postrojenjima. in Zbornik Međunarodnog kongresa o procesnoj industriji – Procesing, 2022
Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS)., 35(1), 99-100.
https://hdl.handle.net/21.15107/rcub_machinery_7088

Karličić N, Obradović M, Todorović D, Petrović MМ, Radić D, Jovović A. Analiza korelacija za proračun koeficijenta trenja za formiranje numeričkog modela za proračun pada pritiska za slučaj pneumatskog transporta letećeg pepela lignita u termoenergetskim postrojenjima. in Zbornik Međunarodnog kongresa o procesnoj industriji – Procesing, 2022. 2022;35(1):99-100.
https://hdl.handle.net/21.15107/rcub_machinery_7088 .

Karličić, Nikola, Obradović, Marko, Todorović, Dušan, Petrović, Milan М., Radić, Dejan, Jovović, Aleksandar, "Analiza korelacija za proračun koeficijenta trenja za formiranje numeričkog modela za proračun pada pritiska za slučaj pneumatskog transporta letećeg pepela lignita u termoenergetskim postrojenjima" in Zbornik Međunarodnog kongresa o procesnoj industriji – Procesing, 2022, 35, no. 1 (2022):99-100,
https://hdl.handle.net/21.15107/rcub_machinery_7088 .

TY  - CONF
AU  - Obradović, Marko
AU  - Todorović, Dušan
AU  - Karličić, Nikola
AU  - Radić, Dejan
AU  - Jovović, Aleksandar
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7089
AB  - Drvna sečka se sve češće koristi kao čvrsto gorivo u modernim kotlovima na biomasu. U radu je razmatran uticaj vlage u drvnoj sečki u odnosu na gubitke sa dimnim gasovima i efikasnost kotlova. Nominalna korisna toplotna snaga ispitivanih kotlova bila je u opsegu 450 – 2000 kW. Sadržaj vlage u drvnoj sečki je bio 19,21 – 38,23%, donja toplotna moć 10177 – 14139 kJ/kg, dok je sadržaj pepela bio 0,84 – 3,59%. Drvna sečka sa većim udelom vlage ima nižu vrednost donje toplotne moći. Efi-kasnost kotlova se kretala 88,78 – 94,06%, gubici sa dimnim gasovima 5,84 – 11,13% a temperature dimnih gasova 121,83 – 188,44 °C. Formirani su matematički izrazi koji daju zavisnost efikasnosti kotla i gubitke sa dimnim gasovima od udela vlage u drvnoj sečki i temperature dimnih gasova.
AB  - Wood chips is often used as solid fuel in modern biomass boilers. The influence of wood chips moisture content is analyzed and related to the flue gas losses and the thermal efficiency of the boiler. Nominal useful heat output of tested boilers was 450 – 2000 kW. Moisture content of wood chips was 19,21 – 38,23% with net calorific value 10177 – 14139 kJ/kg and ash content 0,84 – 3,59%. Wood chips with higher moisture content have lower net calorific value. Thermal efficiency of the boilers was 88,78 – 94,06%, flue gas losses 5,84 – 11,13% and flue gas temperature 121,83 – 188,44 °C. Mathematical equations which gives dependences of thermal efficiency and flue gas losses from mois-ture content od wood chips and flue gas temperature are given in paper.
PB  - Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS)
C3  - Zbornik Međunarodnog kongresa o procesnoj industriji – Procesing, 2022
T1  - Uticaj sadržaja vlage u drvnoj sečki na gubitke sa dimnim gasovima i efikasnost kotla
T1  - Influence of moisture content of wood chips on flue gas losses and thermal efficiency of the boiler
EP  - 101
IS  - 1
SP  - 101
VL  - 35
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7089
ER  - 

@conference{
author = "Obradović, Marko and Todorović, Dušan and Karličić, Nikola and Radić, Dejan and Jovović, Aleksandar",
year = "2022",
abstract = "Drvna sečka se sve češće koristi kao čvrsto gorivo u modernim kotlovima na biomasu. U radu je razmatran uticaj vlage u drvnoj sečki u odnosu na gubitke sa dimnim gasovima i efikasnost kotlova. Nominalna korisna toplotna snaga ispitivanih kotlova bila je u opsegu 450 – 2000 kW. Sadržaj vlage u drvnoj sečki je bio 19,21 – 38,23%, donja toplotna moć 10177 – 14139 kJ/kg, dok je sadržaj pepela bio 0,84 – 3,59%. Drvna sečka sa većim udelom vlage ima nižu vrednost donje toplotne moći. Efi-kasnost kotlova se kretala 88,78 – 94,06%, gubici sa dimnim gasovima 5,84 – 11,13% a temperature dimnih gasova 121,83 – 188,44 °C. Formirani su matematički izrazi koji daju zavisnost efikasnosti kotla i gubitke sa dimnim gasovima od udela vlage u drvnoj sečki i temperature dimnih gasova., Wood chips is often used as solid fuel in modern biomass boilers. The influence of wood chips moisture content is analyzed and related to the flue gas losses and the thermal efficiency of the boiler. Nominal useful heat output of tested boilers was 450 – 2000 kW. Moisture content of wood chips was 19,21 – 38,23% with net calorific value 10177 – 14139 kJ/kg and ash content 0,84 – 3,59%. Wood chips with higher moisture content have lower net calorific value. Thermal efficiency of the boilers was 88,78 – 94,06%, flue gas losses 5,84 – 11,13% and flue gas temperature 121,83 – 188,44 °C. Mathematical equations which gives dependences of thermal efficiency and flue gas losses from mois-ture content od wood chips and flue gas temperature are given in paper.",
publisher = "Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS)",
journal = "Zbornik Međunarodnog kongresa o procesnoj industriji – Procesing, 2022",
title = "Uticaj sadržaja vlage u drvnoj sečki na gubitke sa dimnim gasovima i efikasnost kotla, Influence of moisture content of wood chips on flue gas losses and thermal efficiency of the boiler",
pages = "101-101",
number = "1",
volume = "35",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7089"
}

Obradović, M., Todorović, D., Karličić, N., Radić, D.,& Jovović, A.. (2022). Uticaj sadržaja vlage u drvnoj sečki na gubitke sa dimnim gasovima i efikasnost kotla. in Zbornik Međunarodnog kongresa o procesnoj industriji – Procesing, 2022
Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS)., 35(1), 101-101.
https://hdl.handle.net/21.15107/rcub_machinery_7089

Obradović M, Todorović D, Karličić N, Radić D, Jovović A. Uticaj sadržaja vlage u drvnoj sečki na gubitke sa dimnim gasovima i efikasnost kotla. in Zbornik Međunarodnog kongresa o procesnoj industriji – Procesing, 2022. 2022;35(1):101-101.
https://hdl.handle.net/21.15107/rcub_machinery_7089 .

Obradović, Marko, Todorović, Dušan, Karličić, Nikola, Radić, Dejan, Jovović, Aleksandar, "Uticaj sadržaja vlage u drvnoj sečki na gubitke sa dimnim gasovima i efikasnost kotla" in Zbornik Međunarodnog kongresa o procesnoj industriji – Procesing, 2022, 35, no. 1 (2022):101-101,
https://hdl.handle.net/21.15107/rcub_machinery_7089 .

TY  - JOUR
AU  - Stanojević, Miroslav
AU  - Todorović, Dušan
AU  - Karličić, Nikola
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7083
AB  - Biogasna postrojenja mogu biti izvedena kao mali pogoni za proizvodnju energije za sopstvene potrebe ili veliki energetski sistemi gde se produkovani biogas koristi za proizvodnju toplotne i električne energije koja se predaje u javnu elektrodistributivnu mrežu. U poslednje vreme sve veću primenu imaju tehnologije kombinovane proizvodnje toplotne i električne energije, sistem kogeneracije (engl. combined heat and power, CHP) iz biogasa. U radu je prikazana uporedna analiza energetskog bilansa iskorišćenja biogasa pri primeni konvencionalnih sistema i sistema kogeneracije za istu količinu ulazne energije. U drugom delu rada dat je primer proračuna energetskog bilansa biogasnog postrojenja za anaerobni tretman tečnog stajnjaka sa farme svinja kapaciteta 5000 tovljenika u turnusu.
AB  - Biogas plants can be implemented as small power generation plants for their own needs or large energy systems where the produced biogas is used for the production of heat and electricity that is transferred to the public electricity distribution network. Recently, the use of combined heat and power generation (CHP) from biogas has been increasingly used. This paper presents a comparative analysis of the energy balance of biogas utilization when applied in conventional systems and cogeneration systems for the same amount of input energy. In the second part of the paper, an example of the calculation of the energy balance of a biogas plant for anaerobic treatment of liquid manure from a pig farm with a capacity of 5000 fatling in a turn is given.
PB  - Beograd : SMEITS
T2  - KGH. Klimatizacija, grejanje, hlađenje, 2022
T1  - Uporedna analiza energetskog bilansa iskorišćenja biogasa pri primeni konvencionalnih sistema i sistema kogeneracije
T1  - Comparative analysis of the energy balance of biogas utilization when applied in conventional systems and cogeneration systems
EP  - 43
IS  - 3
SP  - 39
VL  - 51
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7083
ER  - 

@article{
author = "Stanojević, Miroslav and Todorović, Dušan and Karličić, Nikola",
year = "2022",
abstract = "Biogasna postrojenja mogu biti izvedena kao mali pogoni za proizvodnju energije za sopstvene potrebe ili veliki energetski sistemi gde se produkovani biogas koristi za proizvodnju toplotne i električne energije koja se predaje u javnu elektrodistributivnu mrežu. U poslednje vreme sve veću primenu imaju tehnologije kombinovane proizvodnje toplotne i električne energije, sistem kogeneracije (engl. combined heat and power, CHP) iz biogasa. U radu je prikazana uporedna analiza energetskog bilansa iskorišćenja biogasa pri primeni konvencionalnih sistema i sistema kogeneracije za istu količinu ulazne energije. U drugom delu rada dat je primer proračuna energetskog bilansa biogasnog postrojenja za anaerobni tretman tečnog stajnjaka sa farme svinja kapaciteta 5000 tovljenika u turnusu., Biogas plants can be implemented as small power generation plants for their own needs or large energy systems where the produced biogas is used for the production of heat and electricity that is transferred to the public electricity distribution network. Recently, the use of combined heat and power generation (CHP) from biogas has been increasingly used. This paper presents a comparative analysis of the energy balance of biogas utilization when applied in conventional systems and cogeneration systems for the same amount of input energy. In the second part of the paper, an example of the calculation of the energy balance of a biogas plant for anaerobic treatment of liquid manure from a pig farm with a capacity of 5000 fatling in a turn is given.",
publisher = "Beograd : SMEITS",
journal = "KGH. Klimatizacija, grejanje, hlađenje, 2022",
title = "Uporedna analiza energetskog bilansa iskorišćenja biogasa pri primeni konvencionalnih sistema i sistema kogeneracije, Comparative analysis of the energy balance of biogas utilization when applied in conventional systems and cogeneration systems",
pages = "43-39",
number = "3",
volume = "51",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7083"
}

Stanojević, M., Todorović, D.,& Karličić, N.. (2022). Uporedna analiza energetskog bilansa iskorišćenja biogasa pri primeni konvencionalnih sistema i sistema kogeneracije. in KGH. Klimatizacija, grejanje, hlađenje, 2022
Beograd : SMEITS., 51(3), 39-43.
https://hdl.handle.net/21.15107/rcub_machinery_7083

Stanojević M, Todorović D, Karličić N. Uporedna analiza energetskog bilansa iskorišćenja biogasa pri primeni konvencionalnih sistema i sistema kogeneracije. in KGH. Klimatizacija, grejanje, hlađenje, 2022. 2022;51(3):39-43.
https://hdl.handle.net/21.15107/rcub_machinery_7083 .

Stanojević, Miroslav, Todorović, Dušan, Karličić, Nikola, "Uporedna analiza energetskog bilansa iskorišćenja biogasa pri primeni konvencionalnih sistema i sistema kogeneracije" in KGH. Klimatizacija, grejanje, hlađenje, 2022, 51, no. 3 (2022):39-43,
https://hdl.handle.net/21.15107/rcub_machinery_7083 .

TY  - JOUR
AU  - Stanojević, Miroslav
AU  - Todorović, Dušan
AU  - Karličić, Nikola
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4751
AB  - Biogasna postrojenja mogu biti izvedena kao mali pogoni za proizvodnju energije za sopstvene potrebe ili veliki energetski sistemi gde se produkovani biogas koristi za proizvodnju toplotne i električne energije koja se predaje u javnu elektrodistributivnu mrežu. U poslednje vreme sve veću primenu imaju tehnologije kombinovane proizvodnje toplotne i električne energije, sistem kogeneracije (engl. combined heat and power, CHP) iz biogasa.
U radu je prikazana uporedna analiza energetskog bilansa iskorišćenja biogasa pri primeni konvencionalnih sistema i sistema kogeneracije za istu količinu ulazne energije. U drugom delu rada dat je primer proračuna energetskog bilansa biogasnog postrojenja za anaerobni tretman tečnog stajnjaka sa farme svinja kapaciteta 5000 tovljenika u turnusu.
AB  - Biogas plants can be implemented as small power generation plants for their own needs or large energy systems where the produced biogas is used for the production of heat and electricity that is transferred to the public electricity distribution network. Recently, the use of combined heat and power generation (CHP) from biogas has been increasingly used. This paper presents a comparative analysis of the energy balance of biogas utilization when applied in conventional systems and cogeneration systems for the same amount of input energy. In the second part of the paper, an example of the calculation of the energy balance of a biogas plant for anaerobic treatment of liquid manure from a pig farm with a capacity of 5000 fatling in a turn is given.
PB  - Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS)
T2  - KGH. Klimatizacija, grejanje, hlađenje, 2022
T1  - Uporedna analiza energetskog bilansa iskorišćenja biogasa pri primeni konvencionalnih sistema i sistema kogeneracije
T1  - Comparative analysis of the energy balance of biogas utilization when applied in conventional systems and cogeneration systems
EP  - 43
IS  - 3
SP  - 39
VL  - 51
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4751
ER  - 

@article{
author = "Stanojević, Miroslav and Todorović, Dušan and Karličić, Nikola",
year = "2022",
abstract = "Biogasna postrojenja mogu biti izvedena kao mali pogoni za proizvodnju energije za sopstvene potrebe ili veliki energetski sistemi gde se produkovani biogas koristi za proizvodnju toplotne i električne energije koja se predaje u javnu elektrodistributivnu mrežu. U poslednje vreme sve veću primenu imaju tehnologije kombinovane proizvodnje toplotne i električne energije, sistem kogeneracije (engl. combined heat and power, CHP) iz biogasa.
U radu je prikazana uporedna analiza energetskog bilansa iskorišćenja biogasa pri primeni konvencionalnih sistema i sistema kogeneracije za istu količinu ulazne energije. U drugom delu rada dat je primer proračuna energetskog bilansa biogasnog postrojenja za anaerobni tretman tečnog stajnjaka sa farme svinja kapaciteta 5000 tovljenika u turnusu., Biogas plants can be implemented as small power generation plants for their own needs or large energy systems where the produced biogas is used for the production of heat and electricity that is transferred to the public electricity distribution network. Recently, the use of combined heat and power generation (CHP) from biogas has been increasingly used. This paper presents a comparative analysis of the energy balance of biogas utilization when applied in conventional systems and cogeneration systems for the same amount of input energy. In the second part of the paper, an example of the calculation of the energy balance of a biogas plant for anaerobic treatment of liquid manure from a pig farm with a capacity of 5000 fatling in a turn is given.",
publisher = "Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS)",
journal = "KGH. Klimatizacija, grejanje, hlađenje, 2022",
title = "Uporedna analiza energetskog bilansa iskorišćenja biogasa pri primeni konvencionalnih sistema i sistema kogeneracije, Comparative analysis of the energy balance of biogas utilization when applied in conventional systems and cogeneration systems",
pages = "43-39",
number = "3",
volume = "51",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4751"
}

Stanojević, M., Todorović, D.,& Karličić, N.. (2022). Uporedna analiza energetskog bilansa iskorišćenja biogasa pri primeni konvencionalnih sistema i sistema kogeneracije. in KGH. Klimatizacija, grejanje, hlađenje, 2022
Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS)., 51(3), 39-43.
https://hdl.handle.net/21.15107/rcub_machinery_4751

Stanojević M, Todorović D, Karličić N. Uporedna analiza energetskog bilansa iskorišćenja biogasa pri primeni konvencionalnih sistema i sistema kogeneracije. in KGH. Klimatizacija, grejanje, hlađenje, 2022. 2022;51(3):39-43.
https://hdl.handle.net/21.15107/rcub_machinery_4751 .

Stanojević, Miroslav, Todorović, Dušan, Karličić, Nikola, "Uporedna analiza energetskog bilansa iskorišćenja biogasa pri primeni konvencionalnih sistema i sistema kogeneracije" in KGH. Klimatizacija, grejanje, hlađenje, 2022, 51, no. 3 (2022):39-43,
https://hdl.handle.net/21.15107/rcub_machinery_4751 .

TY  - CONF
AU  - Đorđević, Ognjen
AU  - Karličić, Nikola
AU  - Stanojević, Miroslav
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4750
AB  - Prečišćavanje otpadnih voda primenom biološke obrade za slučajeve manjih kapaciteta najčešće se odvija u sekvencijalnim šaržnim reaktorima (SBR – Sequencing Batch Reactor). U radu se razmatra način definisanja potrošnje vazduha u SBR postrojenjima za tretman sanitarnih otpadnih voda u fazi biološke obrade. Specifičnost rada SBR postrojenja je odvijanje procesa u ciklusima koji se sastoje od više faza pri čemu se u pojedinim fazama vrši aeracija uvođenjem vazduha pomoću distributera – aeratora. Karakteristike otpadnih voda (kvalitativne i kvantitativne), potreban stepen prečišćavanja i vrsta postupka biološke obrade predstavljaju polazne podatke za definisanje potrošnje vazduha. Određivanje potrošnje vazduha, sa aspekta utroška energije koji čini najveći udeo u troškovima rada ovih postrojenja, kao i efikasnosti procesa aeracije od koje zavisi i efikasnost celokupnog tretmana, predstavlja bitan faktor pri projektovanju jednog SBR reaktora.
AB  - Wastewater treatment using biological process for cases of smaller capacities usually takes place in sequential batch reactors (SBR - Sequencing Batch Reactor). The paper discusses the method of defining air consumption in SBR plants for sanitary wastewater treatment in the biological process phase. The specificity of the SBR plant operation is the development of processes in cycles consisting of several phases, whereby in some phases aeration is performed by introducing air using a distributor - aerator. The characteristics of wastewater (qualitative and quantitative), the required degree of purification and the type of biological treatment process are the starting data for defining air consumption. Determination of air consumption, from the aspect of energy consumption that makes a larger share in the costs of plant operation, as well as the efficiency of the aeration process on which the efficiency of the overall treatment depends, is an important factor in designing an SBR reactor.
PB  - Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS)
C3  - Zbornik Međunarodnog kongresa o procesnoj industriji – Procesing, 2022
T1  - Definisanje potrošnje vazduha u procesu biološke obrade sanitarnih otpadnih voda u sekvencijalnom šaržnom reaktoru (SBR) na primeru postrojenja kapaciteta 1000 ES
T1  - Determination of air consumption in biological process of sanitary wastewater treatment in sequencing batch reactors (SBR) on the example of a plant with a capacity of 1000 ES
EP  - 224
IS  - 1
SP  - 219
VL  - 35
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4750
ER  - 

@conference{
author = "Đorđević, Ognjen and Karličić, Nikola and Stanojević, Miroslav",
year = "2022",
abstract = "Prečišćavanje otpadnih voda primenom biološke obrade za slučajeve manjih kapaciteta najčešće se odvija u sekvencijalnim šaržnim reaktorima (SBR – Sequencing Batch Reactor). U radu se razmatra način definisanja potrošnje vazduha u SBR postrojenjima za tretman sanitarnih otpadnih voda u fazi biološke obrade. Specifičnost rada SBR postrojenja je odvijanje procesa u ciklusima koji se sastoje od više faza pri čemu se u pojedinim fazama vrši aeracija uvođenjem vazduha pomoću distributera – aeratora. Karakteristike otpadnih voda (kvalitativne i kvantitativne), potreban stepen prečišćavanja i vrsta postupka biološke obrade predstavljaju polazne podatke za definisanje potrošnje vazduha. Određivanje potrošnje vazduha, sa aspekta utroška energije koji čini najveći udeo u troškovima rada ovih postrojenja, kao i efikasnosti procesa aeracije od koje zavisi i efikasnost celokupnog tretmana, predstavlja bitan faktor pri projektovanju jednog SBR reaktora., Wastewater treatment using biological process for cases of smaller capacities usually takes place in sequential batch reactors (SBR - Sequencing Batch Reactor). The paper discusses the method of defining air consumption in SBR plants for sanitary wastewater treatment in the biological process phase. The specificity of the SBR plant operation is the development of processes in cycles consisting of several phases, whereby in some phases aeration is performed by introducing air using a distributor - aerator. The characteristics of wastewater (qualitative and quantitative), the required degree of purification and the type of biological treatment process are the starting data for defining air consumption. Determination of air consumption, from the aspect of energy consumption that makes a larger share in the costs of plant operation, as well as the efficiency of the aeration process on which the efficiency of the overall treatment depends, is an important factor in designing an SBR reactor.",
publisher = "Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS)",
journal = "Zbornik Međunarodnog kongresa o procesnoj industriji – Procesing, 2022",
title = "Definisanje potrošnje vazduha u procesu biološke obrade sanitarnih otpadnih voda u sekvencijalnom šaržnom reaktoru (SBR) na primeru postrojenja kapaciteta 1000 ES, Determination of air consumption in biological process of sanitary wastewater treatment in sequencing batch reactors (SBR) on the example of a plant with a capacity of 1000 ES",
pages = "224-219",
number = "1",
volume = "35",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4750"
}

Đorđević, O., Karličić, N.,& Stanojević, M.. (2022). Definisanje potrošnje vazduha u procesu biološke obrade sanitarnih otpadnih voda u sekvencijalnom šaržnom reaktoru (SBR) na primeru postrojenja kapaciteta 1000 ES. in Zbornik Međunarodnog kongresa o procesnoj industriji – Procesing, 2022
Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS)., 35(1), 219-224.
https://hdl.handle.net/21.15107/rcub_machinery_4750

Đorđević O, Karličić N, Stanojević M. Definisanje potrošnje vazduha u procesu biološke obrade sanitarnih otpadnih voda u sekvencijalnom šaržnom reaktoru (SBR) na primeru postrojenja kapaciteta 1000 ES. in Zbornik Međunarodnog kongresa o procesnoj industriji – Procesing, 2022. 2022;35(1):219-224.
https://hdl.handle.net/21.15107/rcub_machinery_4750 .

Đorđević, Ognjen, Karličić, Nikola, Stanojević, Miroslav, "Definisanje potrošnje vazduha u procesu biološke obrade sanitarnih otpadnih voda u sekvencijalnom šaržnom reaktoru (SBR) na primeru postrojenja kapaciteta 1000 ES" in Zbornik Međunarodnog kongresa o procesnoj industriji – Procesing, 2022, 35, no. 1 (2022):219-224,
https://hdl.handle.net/21.15107/rcub_machinery_4750 .

TY  - CONF
AU  - Karličić, Nikola
AU  - Jovović, Aleksandar
AU  - Radić, Dejan
AU  - Obradović, Marko
AU  - Todorović, Dušan
AU  - Stanojević, Miroslav
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4848
AB  - Razvoj i širenje primene postupaka aerobne biološke obrade gradskih i industrijskih otpadnih voda praćen je razvojem opreme za aeraciju koja se koristi u ovim procesima. Postrojenja za aerobnu biološku obradu otpadnih voda odlikuju se velikim utroškom energije za aeraciju zbog čega se posebna pažnja mora posvetiti izboru adekvatnog aeracionog sistema. Danas postoji veliki izbor različitih tipova uređaja za aeraciju za koje proizvođači definišu određene parmetre koji se odnose na kapaci-tete, dimenzije, otpore strujanju, efikasnost prenosa kiseonika, sklonost zaprljanju i sl. Ovi parametri su osnova za izbor određene konstrukcije i broja distributera vazduha, kao i izbor ostale opreme (kompresorskih postrojenja, sistema cevovoda, zaporne i regulacione armature i slično). U cilju definisanja pristupa za poređenje distributera vazduha različitih konstrukcija u radu su analizirani osnovni pokazatelji njihove efikasnosti.
AB  - Development and expansion of application of biological treatment processes for municipal and industrial waste water were followed with development of aeration equipment. All plants for biological aerobic treatment of waste water involve high energy consumption for aeration, and therefore special care has to be committed to choice of adequate aeration system. There is a large offer of various types of aeration facilities in the market. Producers define certain parameters: capacities, overall dimensions, flow resistances, oxygen transfer efficiency, soil tendency. These are basic para-meters for selection aeration system construction and selection of secondary equipment (compressor plants, pipe systems, seal and dosing valve, etc.). In the paper were analyzed the basic parameters of aeration equipment efficiency.
PB  - Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS)
C3  - Zbornik Međunarodnog kongresa o procesnoj industriji – Procesing, 2021
T1  - Pokazatelji rada uređaja za aeraciju u postrojenjima za tretman otpadnih voda
T1  - Process parameters of aeration equipment for treatment of waste
EP  - 41
IS  - 1
SP  - 33
VL  - 34
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4848
ER  - 

@conference{
author = "Karličić, Nikola and Jovović, Aleksandar and Radić, Dejan and Obradović, Marko and Todorović, Dušan and Stanojević, Miroslav",
year = "2021",
abstract = "Razvoj i širenje primene postupaka aerobne biološke obrade gradskih i industrijskih otpadnih voda praćen je razvojem opreme za aeraciju koja se koristi u ovim procesima. Postrojenja za aerobnu biološku obradu otpadnih voda odlikuju se velikim utroškom energije za aeraciju zbog čega se posebna pažnja mora posvetiti izboru adekvatnog aeracionog sistema. Danas postoji veliki izbor različitih tipova uređaja za aeraciju za koje proizvođači definišu određene parmetre koji se odnose na kapaci-tete, dimenzije, otpore strujanju, efikasnost prenosa kiseonika, sklonost zaprljanju i sl. Ovi parametri su osnova za izbor određene konstrukcije i broja distributera vazduha, kao i izbor ostale opreme (kompresorskih postrojenja, sistema cevovoda, zaporne i regulacione armature i slično). U cilju definisanja pristupa za poređenje distributera vazduha različitih konstrukcija u radu su analizirani osnovni pokazatelji njihove efikasnosti., Development and expansion of application of biological treatment processes for municipal and industrial waste water were followed with development of aeration equipment. All plants for biological aerobic treatment of waste water involve high energy consumption for aeration, and therefore special care has to be committed to choice of adequate aeration system. There is a large offer of various types of aeration facilities in the market. Producers define certain parameters: capacities, overall dimensions, flow resistances, oxygen transfer efficiency, soil tendency. These are basic para-meters for selection aeration system construction and selection of secondary equipment (compressor plants, pipe systems, seal and dosing valve, etc.). In the paper were analyzed the basic parameters of aeration equipment efficiency.",
publisher = "Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS)",
journal = "Zbornik Međunarodnog kongresa o procesnoj industriji – Procesing, 2021",
title = "Pokazatelji rada uređaja za aeraciju u postrojenjima za tretman otpadnih voda, Process parameters of aeration equipment for treatment of waste",
pages = "41-33",
number = "1",
volume = "34",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4848"
}

Karličić, N., Jovović, A., Radić, D., Obradović, M., Todorović, D.,& Stanojević, M.. (2021). Pokazatelji rada uređaja za aeraciju u postrojenjima za tretman otpadnih voda. in Zbornik Međunarodnog kongresa o procesnoj industriji – Procesing, 2021
Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS)., 34(1), 33-41.
https://hdl.handle.net/21.15107/rcub_machinery_4848

Karličić N, Jovović A, Radić D, Obradović M, Todorović D, Stanojević M. Pokazatelji rada uređaja za aeraciju u postrojenjima za tretman otpadnih voda. in Zbornik Međunarodnog kongresa o procesnoj industriji – Procesing, 2021. 2021;34(1):33-41.
https://hdl.handle.net/21.15107/rcub_machinery_4848 .

Karličić, Nikola, Jovović, Aleksandar, Radić, Dejan, Obradović, Marko, Todorović, Dušan, Stanojević, Miroslav, "Pokazatelji rada uređaja za aeraciju u postrojenjima za tretman otpadnih voda" in Zbornik Međunarodnog kongresa o procesnoj industriji – Procesing, 2021, 34, no. 1 (2021):33-41,
https://hdl.handle.net/21.15107/rcub_machinery_4848 .

TY  - CONF
AU  - Obradović, Marko
AU  - Karličić, Nikola
AU  - Todorović, Dušan
AU  - Radić, Dejan
AU  - Jovović, Aleksandar
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4847
AB  - There is evident increase in air pollution in recent years. The dominant sources of air pollution in urban and rural areas, during the heating season, are small individual appliances. In recent years, new combustion plants have been built in several places in Serbia, which use biomass as fuel - wood chips. These plants were built in order to replace multiple existing low-rank coal combustion plants, combining them in one combustion plant. This paper gives review of PM emissions measurements, that were conducted in 8 newly-built wood chip combustion plants. Combustion plants provided heating power between 0,5 and 1,5 MW. Also, proximate and ultimate analysis of fuel is presented for every boiler under consideration.
PB  - Belgrade : Vinča Institute of Nuclear Sciences
C3  - Abstracts of Keynote Invited Lectures and Contributed Papers of The Eighth International WeBIOPATR Workshop & Conference Particulate Matter: Research and Management WeBIOPATR 2021, 29th November to 1st December 2021, Vinča, Belgrade, Serbia
T1  - PM emissions from newly-built wood chip combustion plants: Case study for Serbia
EP  - 71
SP  - 71
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4847
ER  - 

@conference{
author = "Obradović, Marko and Karličić, Nikola and Todorović, Dušan and Radić, Dejan and Jovović, Aleksandar",
year = "2021",
abstract = "There is evident increase in air pollution in recent years. The dominant sources of air pollution in urban and rural areas, during the heating season, are small individual appliances. In recent years, new combustion plants have been built in several places in Serbia, which use biomass as fuel - wood chips. These plants were built in order to replace multiple existing low-rank coal combustion plants, combining them in one combustion plant. This paper gives review of PM emissions measurements, that were conducted in 8 newly-built wood chip combustion plants. Combustion plants provided heating power between 0,5 and 1,5 MW. Also, proximate and ultimate analysis of fuel is presented for every boiler under consideration.",
publisher = "Belgrade : Vinča Institute of Nuclear Sciences",
journal = "Abstracts of Keynote Invited Lectures and Contributed Papers of The Eighth International WeBIOPATR Workshop & Conference Particulate Matter: Research and Management WeBIOPATR 2021, 29th November to 1st December 2021, Vinča, Belgrade, Serbia",
title = "PM emissions from newly-built wood chip combustion plants: Case study for Serbia",
pages = "71-71",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4847"
}

Obradović, M., Karličić, N., Todorović, D., Radić, D.,& Jovović, A.. (2021). PM emissions from newly-built wood chip combustion plants: Case study for Serbia. in Abstracts of Keynote Invited Lectures and Contributed Papers of The Eighth International WeBIOPATR Workshop & Conference Particulate Matter: Research and Management WeBIOPATR 2021, 29th November to 1st December 2021, Vinča, Belgrade, Serbia
Belgrade : Vinča Institute of Nuclear Sciences., 71-71.
https://hdl.handle.net/21.15107/rcub_machinery_4847

Obradović M, Karličić N, Todorović D, Radić D, Jovović A. PM emissions from newly-built wood chip combustion plants: Case study for Serbia. in Abstracts of Keynote Invited Lectures and Contributed Papers of The Eighth International WeBIOPATR Workshop & Conference Particulate Matter: Research and Management WeBIOPATR 2021, 29th November to 1st December 2021, Vinča, Belgrade, Serbia. 2021;:71-71.
https://hdl.handle.net/21.15107/rcub_machinery_4847 .

Obradović, Marko, Karličić, Nikola, Todorović, Dušan, Radić, Dejan, Jovović, Aleksandar, "PM emissions from newly-built wood chip combustion plants: Case study for Serbia" in Abstracts of Keynote Invited Lectures and Contributed Papers of The Eighth International WeBIOPATR Workshop & Conference Particulate Matter: Research and Management WeBIOPATR 2021, 29th November to 1st December 2021, Vinča, Belgrade, Serbia (2021):71-71,
https://hdl.handle.net/21.15107/rcub_machinery_4847 .

TY  - CONF
AU  - Todorović, Dušan
AU  - Jovović, Aleksandar
AU  - Milošević, Stanislava
AU  - Obradović, Marko
AU  - Karličić, Nikola
AU  - Radić, Dejan
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4846
AB  - Residential and commercial solid fuel burning in stoves, small and medium combustion plants have been designated as the largest sources of fine particles with serious impacts on air quality, climate and human health. Having in mind the age and condition of the plant, as well as domestic raw lignite of poor quality which is widely used in these plants, this problem becomes even more pronounced in Serbia during the heating season. An additional reason for such high dust emissions certainly lies in the fact that most of these combustion units, in addition to being in very poor condition, work without any flue gas system for dedusting, also the mentioned lignite is low in calorific value with high ash and moisture content. Replacement of such combustion units with modern biomass boiler units is certainly appropriate, and in places where natural gas is not available, this energy source is the best solution.
In this paper and for the case study of Mionica town, the influence on the concentration of PM in ambient air will be presented by replacing two old coal boilers with new biomass boilers. Namely, two old boilers (2x950 kWth) covered the heat demand of the sports centre as well as primary and secondary school, these boilers were replaced with two new biomass boilers of the same installed thermal capacity.
In order to analyse the influence of boilers substitution on PM concentration in ambient air, the regulatory air dispersion model, recommended by the US Environmental Protection Agency (US EPA) AERMOD, is used, which is based on the Gaussian model. Air dispersion modeling within this Study includes only sources which are associated with this Case Study. Other sources of emissions and background pollution are not included. The aim of this Study is not to show the air quality in the domain, but rather to provide a representative assessment of the impact of boilers substitution on PM concentration in the model domain. For the purpose of this Study NASA digital maps SRTM1 - Shuttle Radar Topography Mission (resolution ~ 30m, or 1 arc-sec) are used and processed by the AERMAP, while meteorological, data processed by the AERMET, are site specific MM5 (Grid Cell 12 km x 12 km), giving an hourly-modelled meteorological data set for full five consecutive calendar years. The results presented in this paper were obtained using a model which includes the emissions of TSP, PM10 and PM2.5 from the old and new boilers. An emission inventory has been prepared based on combustion calculations and emission factors (EMEP/EEA, 2019) for old coal fired boilers, while for new biomass boilers, site-specific measurements and PM size distribution factors (US EPA, AP 42, 2003) have been used.
Modelling results consist of graphical (isopleth diagrams) ground level concentrations for TSP, PM10 and PM2.5 and various average periods.
PB  - Belgrade : Vinča Institute of Nuclear Sciences
C3  - Abstracts of Keynote Invited Lectures and Contributed Papers of The Eighth International WeBIOPATR Workshop & Conference Particulate Matter: Research and Management WeBIOPATR 2021, 29th November to 1st December 2021, Vinča, Belgrade, Serbia
T1  - Effect of substitution of old coal boilers with new biomass boilers on the concentration of particulate matter in ambient air: A case study Mionica
EP  - 69
SP  - 69
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4846
ER  - 

@conference{
author = "Todorović, Dušan and Jovović, Aleksandar and Milošević, Stanislava and Obradović, Marko and Karličić, Nikola and Radić, Dejan",
year = "2021",
abstract = "Residential and commercial solid fuel burning in stoves, small and medium combustion plants have been designated as the largest sources of fine particles with serious impacts on air quality, climate and human health. Having in mind the age and condition of the plant, as well as domestic raw lignite of poor quality which is widely used in these plants, this problem becomes even more pronounced in Serbia during the heating season. An additional reason for such high dust emissions certainly lies in the fact that most of these combustion units, in addition to being in very poor condition, work without any flue gas system for dedusting, also the mentioned lignite is low in calorific value with high ash and moisture content. Replacement of such combustion units with modern biomass boiler units is certainly appropriate, and in places where natural gas is not available, this energy source is the best solution.
In this paper and for the case study of Mionica town, the influence on the concentration of PM in ambient air will be presented by replacing two old coal boilers with new biomass boilers. Namely, two old boilers (2x950 kWth) covered the heat demand of the sports centre as well as primary and secondary school, these boilers were replaced with two new biomass boilers of the same installed thermal capacity.
In order to analyse the influence of boilers substitution on PM concentration in ambient air, the regulatory air dispersion model, recommended by the US Environmental Protection Agency (US EPA) AERMOD, is used, which is based on the Gaussian model. Air dispersion modeling within this Study includes only sources which are associated with this Case Study. Other sources of emissions and background pollution are not included. The aim of this Study is not to show the air quality in the domain, but rather to provide a representative assessment of the impact of boilers substitution on PM concentration in the model domain. For the purpose of this Study NASA digital maps SRTM1 - Shuttle Radar Topography Mission (resolution ~ 30m, or 1 arc-sec) are used and processed by the AERMAP, while meteorological, data processed by the AERMET, are site specific MM5 (Grid Cell 12 km x 12 km), giving an hourly-modelled meteorological data set for full five consecutive calendar years. The results presented in this paper were obtained using a model which includes the emissions of TSP, PM10 and PM2.5 from the old and new boilers. An emission inventory has been prepared based on combustion calculations and emission factors (EMEP/EEA, 2019) for old coal fired boilers, while for new biomass boilers, site-specific measurements and PM size distribution factors (US EPA, AP 42, 2003) have been used.
Modelling results consist of graphical (isopleth diagrams) ground level concentrations for TSP, PM10 and PM2.5 and various average periods.",
publisher = "Belgrade : Vinča Institute of Nuclear Sciences",
journal = "Abstracts of Keynote Invited Lectures and Contributed Papers of The Eighth International WeBIOPATR Workshop & Conference Particulate Matter: Research and Management WeBIOPATR 2021, 29th November to 1st December 2021, Vinča, Belgrade, Serbia",
title = "Effect of substitution of old coal boilers with new biomass boilers on the concentration of particulate matter in ambient air: A case study Mionica",
pages = "69-69",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4846"
}

Todorović, D., Jovović, A., Milošević, S., Obradović, M., Karličić, N.,& Radić, D.. (2021). Effect of substitution of old coal boilers with new biomass boilers on the concentration of particulate matter in ambient air: A case study Mionica. in Abstracts of Keynote Invited Lectures and Contributed Papers of The Eighth International WeBIOPATR Workshop & Conference Particulate Matter: Research and Management WeBIOPATR 2021, 29th November to 1st December 2021, Vinča, Belgrade, Serbia
Belgrade : Vinča Institute of Nuclear Sciences., 69-69.
https://hdl.handle.net/21.15107/rcub_machinery_4846

Todorović D, Jovović A, Milošević S, Obradović M, Karličić N, Radić D. Effect of substitution of old coal boilers with new biomass boilers on the concentration of particulate matter in ambient air: A case study Mionica. in Abstracts of Keynote Invited Lectures and Contributed Papers of The Eighth International WeBIOPATR Workshop & Conference Particulate Matter: Research and Management WeBIOPATR 2021, 29th November to 1st December 2021, Vinča, Belgrade, Serbia. 2021;:69-69.
https://hdl.handle.net/21.15107/rcub_machinery_4846 .

Todorović, Dušan, Jovović, Aleksandar, Milošević, Stanislava, Obradović, Marko, Karličić, Nikola, Radić, Dejan, "Effect of substitution of old coal boilers with new biomass boilers on the concentration of particulate matter in ambient air: A case study Mionica" in Abstracts of Keynote Invited Lectures and Contributed Papers of The Eighth International WeBIOPATR Workshop & Conference Particulate Matter: Research and Management WeBIOPATR 2021, 29th November to 1st December 2021, Vinča, Belgrade, Serbia (2021):69-69,
https://hdl.handle.net/21.15107/rcub_machinery_4846 .

TY  - JOUR
AU  - Todorović, Dušan
AU  - Jovović, Aleksandar
AU  - Milovanović, Aleksandar
AU  - Obradović, Marko
AU  - Karličić, Nikola
AU  - Radić, Dejan
PY  - 2020
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4700
AB  - The United Nations Development Programme (UNDP), acting as an implementing agency of the Global Environment Facility (GEF), is supporting the Ministry of Environmental Protection (MoEP) to implement the five-year “Climate Smart Urban Development Challenge” project, jointly financed by the GEF, MoEP and municipalities. The objective of the project is to promote climate-smart urban development. By a challenge prize approach it seeks to actively engage the civil society, public and business communities to come up with new and innovative ideas on how to contribute to this in practice and to jointly develop, finance and implement these ideas further
PB  - Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS)
T2  - Procesna tehnika
T1  - New approach in production of heat and electricity from wood biomass – good enginering practice of Bioenergy Point
T1  - Novi pristup proizvodnji toplote i električne energije od drvene biomase - dobra inženjerska praksa Bioenergy Point
EP  - 21
IS  - 1
SP  - 18
VL  - 32
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4700
ER  - 

@article{
author = "Todorović, Dušan and Jovović, Aleksandar and Milovanović, Aleksandar and Obradović, Marko and Karličić, Nikola and Radić, Dejan",
year = "2020",
abstract = "The United Nations Development Programme (UNDP), acting as an implementing agency of the Global Environment Facility (GEF), is supporting the Ministry of Environmental Protection (MoEP) to implement the five-year “Climate Smart Urban Development Challenge” project, jointly financed by the GEF, MoEP and municipalities. The objective of the project is to promote climate-smart urban development. By a challenge prize approach it seeks to actively engage the civil society, public and business communities to come up with new and innovative ideas on how to contribute to this in practice and to jointly develop, finance and implement these ideas further",
publisher = "Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS)",
journal = "Procesna tehnika",
title = "New approach in production of heat and electricity from wood biomass – good enginering practice of Bioenergy Point, Novi pristup proizvodnji toplote i električne energije od drvene biomase - dobra inženjerska praksa Bioenergy Point",
pages = "21-18",
number = "1",
volume = "32",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4700"
}

Todorović, D., Jovović, A., Milovanović, A., Obradović, M., Karličić, N.,& Radić, D.. (2020). New approach in production of heat and electricity from wood biomass – good enginering practice of Bioenergy Point. in Procesna tehnika
Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS)., 32(1), 18-21.
https://hdl.handle.net/21.15107/rcub_machinery_4700

Todorović D, Jovović A, Milovanović A, Obradović M, Karličić N, Radić D. New approach in production of heat and electricity from wood biomass – good enginering practice of Bioenergy Point. in Procesna tehnika. 2020;32(1):18-21.
https://hdl.handle.net/21.15107/rcub_machinery_4700 .

Todorović, Dušan, Jovović, Aleksandar, Milovanović, Aleksandar, Obradović, Marko, Karličić, Nikola, Radić, Dejan, "New approach in production of heat and electricity from wood biomass – good enginering practice of Bioenergy Point" in Procesna tehnika, 32, no. 1 (2020):18-21,
https://hdl.handle.net/21.15107/rcub_machinery_4700 .

TY  - JOUR
AU  - Karličić, Nikola
AU  - Obradović, Marko
AU  - Todorović, Dušan
AU  - Radić, Dejan
AU  - Jovović, Aleksandar
AU  - Stanojević, Miroslav
PY  - 2020
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4698
AB  - Phosphates, in the form of fertilizers, are essential in the agricultural sector. About 95% of the world phosphate rock production is used in fertilizer industry, and most of the balance is processed into elemental phosphorus which is the main raw material for manufacturing various phosphate compounds
PB  - Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS)
T2  - Procesna tehnika
T1  - Uticaj granulometrijskog sastava materijala na odvijanje pneumatskog transporta na primeru mlevenog fosfata
T1  - Impact of particle size distribution of material on pneumatic conveying operation on example of ground phosphate
EP  - 35
IS  - 2
SP  - 32
VL  - 32
DO  - 10.24094/ptc.020.32.2.32
ER  - 

@article{
author = "Karličić, Nikola and Obradović, Marko and Todorović, Dušan and Radić, Dejan and Jovović, Aleksandar and Stanojević, Miroslav",
year = "2020",
abstract = "Phosphates, in the form of fertilizers, are essential in the agricultural sector. About 95% of the world phosphate rock production is used in fertilizer industry, and most of the balance is processed into elemental phosphorus which is the main raw material for manufacturing various phosphate compounds",
publisher = "Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS)",
journal = "Procesna tehnika",
title = "Uticaj granulometrijskog sastava materijala na odvijanje pneumatskog transporta na primeru mlevenog fosfata, Impact of particle size distribution of material on pneumatic conveying operation on example of ground phosphate",
pages = "35-32",
number = "2",
volume = "32",
doi = "10.24094/ptc.020.32.2.32"
}

Karličić, N., Obradović, M., Todorović, D., Radić, D., Jovović, A.,& Stanojević, M.. (2020). Uticaj granulometrijskog sastava materijala na odvijanje pneumatskog transporta na primeru mlevenog fosfata. in Procesna tehnika
Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS)., 32(2), 32-35.
https://doi.org/10.24094/ptc.020.32.2.32

Karličić N, Obradović M, Todorović D, Radić D, Jovović A, Stanojević M. Uticaj granulometrijskog sastava materijala na odvijanje pneumatskog transporta na primeru mlevenog fosfata. in Procesna tehnika. 2020;32(2):32-35.
doi:10.24094/ptc.020.32.2.32 .

Karličić, Nikola, Obradović, Marko, Todorović, Dušan, Radić, Dejan, Jovović, Aleksandar, Stanojević, Miroslav, "Uticaj granulometrijskog sastava materijala na odvijanje pneumatskog transporta na primeru mlevenog fosfata" in Procesna tehnika, 32, no. 2 (2020):32-35,
https://doi.org/10.24094/ptc.020.32.2.32 . .

TY  - JOUR
AU  - Stanojević, Miroslav
AU  - Karličić, Nikola
AU  - Obradović, Marko
PY  - 2020
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4699
AB  - Prečišćavanje otpadnih voda u fazi sekundarne obrade najčešće se odvija u bioaeracionim bazenima i sekvencijalnim šaržnim reaktorima (SBR - Sequencing Batch Reactor). U radu se razmatraju osnovni elementi dimenzionisanja sekvencijalnih šaržnih reaktora za tretman otpadnih voda u fazi sekundarne obrade.
PB  - Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS)
T2  - Procesna tehnika
T1  - Elementi dimenzionisanja sekvencijalnih šaržnih reaktora (SBR) u sistemima prečišćavanja otpadnih voda
EP  - 26
IS  - 1
SP  - 22
VL  - 32
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4699
ER  - 

@article{
author = "Stanojević, Miroslav and Karličić, Nikola and Obradović, Marko",
year = "2020",
abstract = "Prečišćavanje otpadnih voda u fazi sekundarne obrade najčešće se odvija u bioaeracionim bazenima i sekvencijalnim šaržnim reaktorima (SBR - Sequencing Batch Reactor). U radu se razmatraju osnovni elementi dimenzionisanja sekvencijalnih šaržnih reaktora za tretman otpadnih voda u fazi sekundarne obrade.",
publisher = "Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS)",
journal = "Procesna tehnika",
title = "Elementi dimenzionisanja sekvencijalnih šaržnih reaktora (SBR) u sistemima prečišćavanja otpadnih voda",
pages = "26-22",
number = "1",
volume = "32",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4699"
}

Stanojević, M., Karličić, N.,& Obradović, M.. (2020). Elementi dimenzionisanja sekvencijalnih šaržnih reaktora (SBR) u sistemima prečišćavanja otpadnih voda. in Procesna tehnika
Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS)., 32(1), 22-26.
https://hdl.handle.net/21.15107/rcub_machinery_4699

Stanojević M, Karličić N, Obradović M. Elementi dimenzionisanja sekvencijalnih šaržnih reaktora (SBR) u sistemima prečišćavanja otpadnih voda. in Procesna tehnika. 2020;32(1):22-26.
https://hdl.handle.net/21.15107/rcub_machinery_4699 .

Stanojević, Miroslav, Karličić, Nikola, Obradović, Marko, "Elementi dimenzionisanja sekvencijalnih šaržnih reaktora (SBR) u sistemima prečišćavanja otpadnih voda" in Procesna tehnika, 32, no. 1 (2020):22-26,
https://hdl.handle.net/21.15107/rcub_machinery_4699 .

TY  - THES
AU  - Karličić, Nikola
PY  - 2019
UR  - https://nardus.mpn.gov.rs/handle/123456789/11470
UR  - http://eteze.bg.ac.rs/application/showtheses?thesesId=6895
UR  - https://fedorabg.bg.ac.rs/fedora/get/o:20216/bdef:Content/download
UR  - http://vbs.rs/scripts/cobiss?command=DISPLAY&base=70036&RID=515006627
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/63
AB  - Velika količina pepela nastaje kao nusproizvod sagorevanja uglja u termoenergetskim postrojenjima, čiji pravilan rad zahteva sistem pneumatskog transporta za njegovo efikasno odvođenje. Odlaganje pepela na deponije predstavlja teret za životnu sredinu. Poznavanje fizičko-hemijskih i aeracionih karakteristika pepela je preduslov za precizno predviđanje ponašanja sistema pneumatskog transporta pepela iz termoelektrana velikog kapaciteta i ocene moguće primene ovog nusproizvoda u različitim industrijskim granama. U okviru ove disertacije razmatrane su karakteristike pepela lignita Kolubara iz termoelektrane snage 620 MWe. Ispitivanjima fizičko-hemijskih karakteristika uzoraka zaključeno je da postoji izrazita heterogenost pepela, što naročito utiče na njegove aeracione karakteristike. Međusobne zavisnosti fizičkih i aeracionih karakteristika pokazale su da za ispitivani pepeo nije moguće jednoznačno definisati režim pneumatskog transporta. S obzirom na činjenicu da je ispitivani pepeo na granici ugušćene i razređene faze, peremabilnost pepela, koja je značajan parametar za definisanje pneumatskog transporta, pokazuje da su neophodne brzine transporta u granicama od 10 do 15 m/s. Razvijen je programski kod za dva numerička modela proračuna pada pritiska pri pneumatskom transportu pepela velikog kapaciteta i velike dužine. Verifikacija modela izvedena je na osnovu eksperimentalnih ispitivanja pneumatskog transporta pepela kapaciteta 120 t/h i dužine 600 m. Model zasnovan na korelaciji Dogina i Lebedeva, gde je parametar A=1,4∙10-6, daje odlično slaganje sa eksperimentalnim podacima, uz korelacioni odnos 93,99% i srednje kvadratno odstupanje 9,58%. Rezultati ove doktorske disertacije imaju veliki naučni i praktični značaj. Predstavljaju dobru osnovu za dalja istraživanja, razmatranje moguće primene ispitivanog pepela, kao i za definisanje optimalnog režima i projektovanje sistema pneumatskog transporta ovog ili sličnog materijala.
AB  - Large volumes of ash are generated as byproduct of coal combustion process in thermoenergetic plants, and their proper operation depends upon efficient pneumatic conveying system to dispose it continuously. Disposing the ash to landfills creates huge environmental burden. Both physico-chemical and aeration characteristics of ash are prerequisite for accurate and reliable behaviour prediction of long distance large capacity pneumatic conveying system as well as for possible utilization consideration. This doctoral dissertation analyzed characteristics of Kolubara lignite ash from a 620 MWe thermal power plant. Physico-chemical characteristics investigation of samples led to conclusion that this ash is extremely heterogeneous material, and that significantly affects its aeration characteristics. Relationship between physical and aeration characteristics of ash showed that unambiguous defining of pneumatic conveying mode is not possible. Considering the fact that this ash belongs to boundary area of dilute and dense phase, ash permeability, as important parameter of pneumatic conveying defining, indicated required transport velocities between 10 to 15 m/s. A computer program code was developed for two numerical models to estimate pressure drop for large capacity long distance ash pneumatic conveying. Model verification was undertaken using experimental data obtained by examination of 120 t/h and 600 m pneumatic conveying of ash. Model based on correlation of Dogin and Lebedev, for parameter A=1,4∙10-6, is in excellent agreement with experimental data, having correlation ratio 93,99% and rootmean- square deviation 9,58%. This doctoral dissertation results are of scientific and practical importance. They offer a good basis for further investigations, considering possible utilization of this ash as well as for defining optimal mode and designing pneumatic conveying system of this or similar material.
PB  - Univerzitet u Beogradu, Mašinski fakultet
T1  - Svojstva pepela iz termoelektrana značajna za odlaganje i primenu
T1  - Characteristics of ash from thermal power plants important for disposalund utilization
UR  - https://hdl.handle.net/21.15107/rcub_nardus_11470
ER  - 

@phdthesis{
author = "Karličić, Nikola",
year = "2019",
abstract = "Velika količina pepela nastaje kao nusproizvod sagorevanja uglja u termoenergetskim postrojenjima, čiji pravilan rad zahteva sistem pneumatskog transporta za njegovo efikasno odvođenje. Odlaganje pepela na deponije predstavlja teret za životnu sredinu. Poznavanje fizičko-hemijskih i aeracionih karakteristika pepela je preduslov za precizno predviđanje ponašanja sistema pneumatskog transporta pepela iz termoelektrana velikog kapaciteta i ocene moguće primene ovog nusproizvoda u različitim industrijskim granama. U okviru ove disertacije razmatrane su karakteristike pepela lignita Kolubara iz termoelektrane snage 620 MWe. Ispitivanjima fizičko-hemijskih karakteristika uzoraka zaključeno je da postoji izrazita heterogenost pepela, što naročito utiče na njegove aeracione karakteristike. Međusobne zavisnosti fizičkih i aeracionih karakteristika pokazale su da za ispitivani pepeo nije moguće jednoznačno definisati režim pneumatskog transporta. S obzirom na činjenicu da je ispitivani pepeo na granici ugušćene i razređene faze, peremabilnost pepela, koja je značajan parametar za definisanje pneumatskog transporta, pokazuje da su neophodne brzine transporta u granicama od 10 do 15 m/s. Razvijen je programski kod za dva numerička modela proračuna pada pritiska pri pneumatskom transportu pepela velikog kapaciteta i velike dužine. Verifikacija modela izvedena je na osnovu eksperimentalnih ispitivanja pneumatskog transporta pepela kapaciteta 120 t/h i dužine 600 m. Model zasnovan na korelaciji Dogina i Lebedeva, gde je parametar A=1,4∙10-6, daje odlično slaganje sa eksperimentalnim podacima, uz korelacioni odnos 93,99% i srednje kvadratno odstupanje 9,58%. Rezultati ove doktorske disertacije imaju veliki naučni i praktični značaj. Predstavljaju dobru osnovu za dalja istraživanja, razmatranje moguće primene ispitivanog pepela, kao i za definisanje optimalnog režima i projektovanje sistema pneumatskog transporta ovog ili sličnog materijala., Large volumes of ash are generated as byproduct of coal combustion process in thermoenergetic plants, and their proper operation depends upon efficient pneumatic conveying system to dispose it continuously. Disposing the ash to landfills creates huge environmental burden. Both physico-chemical and aeration characteristics of ash are prerequisite for accurate and reliable behaviour prediction of long distance large capacity pneumatic conveying system as well as for possible utilization consideration. This doctoral dissertation analyzed characteristics of Kolubara lignite ash from a 620 MWe thermal power plant. Physico-chemical characteristics investigation of samples led to conclusion that this ash is extremely heterogeneous material, and that significantly affects its aeration characteristics. Relationship between physical and aeration characteristics of ash showed that unambiguous defining of pneumatic conveying mode is not possible. Considering the fact that this ash belongs to boundary area of dilute and dense phase, ash permeability, as important parameter of pneumatic conveying defining, indicated required transport velocities between 10 to 15 m/s. A computer program code was developed for two numerical models to estimate pressure drop for large capacity long distance ash pneumatic conveying. Model verification was undertaken using experimental data obtained by examination of 120 t/h and 600 m pneumatic conveying of ash. Model based on correlation of Dogin and Lebedev, for parameter A=1,4∙10-6, is in excellent agreement with experimental data, having correlation ratio 93,99% and rootmean- square deviation 9,58%. This doctoral dissertation results are of scientific and practical importance. They offer a good basis for further investigations, considering possible utilization of this ash as well as for defining optimal mode and designing pneumatic conveying system of this or similar material.",
publisher = "Univerzitet u Beogradu, Mašinski fakultet",
title = "Svojstva pepela iz termoelektrana značajna za odlaganje i primenu, Characteristics of ash from thermal power plants important for disposalund utilization",
url = "https://hdl.handle.net/21.15107/rcub_nardus_11470"
}

Karličić, N.. (2019). Svojstva pepela iz termoelektrana značajna za odlaganje i primenu. 
Univerzitet u Beogradu, Mašinski fakultet..
https://hdl.handle.net/21.15107/rcub_nardus_11470

Karličić N. Svojstva pepela iz termoelektrana značajna za odlaganje i primenu. 2019;.
https://hdl.handle.net/21.15107/rcub_nardus_11470 .

Karličić, Nikola, "Svojstva pepela iz termoelektrana značajna za odlaganje i primenu" (2019),
https://hdl.handle.net/21.15107/rcub_nardus_11470 .

TY  - BOOK
AU  - Obradović, Marko
AU  - Jovović, Aleksandar
AU  - Karan, Milenko
AU  - Đurić, Slavko
AU  - Radić, Dejan
AU  - Stanojević, Miroslav
AU  - Todorović, Dušan
AU  - Karličić, Nikola
AU  - Kuburović, Miloš
PY  - 2019
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4841
AB  - Област процесне технике је као посебно усмерење у наставни план на Машински факултет Универзитета у Београду  технике уведена 1959. године. Развојем домаће процесне и прерађивачке индустрије, развијала се и настава увођењем предмета у којима су се изучавале технолошке операције са једне стране, и технолошки апарати и машине, са друге стране. Већ је наставни план од 1973. године обухватио седам предмета усмерења (Конструкција и прорачун апарата, Основе технолошких процеса, Машине и апарати за механичке и хидромеханичке операције, Простирање топлоте и масе, Технолошки и дифузиони апарати, Индустријске пећи), а настава из области сушења уводи се кроз посебан предмет Сушаре. Иако је сушење једна од многобројних процесних операција које су сврстане у основне процесне операције (механичке, хидромеханичке, топлотне, дифузионе, хемијске и биохемијске), због свог значаја и заступљености у многим технолошким процесима, издваја се као посебна целина за себе. У великом броју случајева добијање одређених производа заснива се првенствено на процесу сушења. На тај начин, наставни програм предмета Сушаре обухватио је следећа поглавља: Дефиниција процеса сушења, подела, примена и значај процеса и опреме за сушење, дефиниција основних величина, мерење масеног удела влаге; Статика процеса сушења; Кинетика процеса сушења; Кинетика конвективног сушења влажног материјала; Криве кинетике сушења; Криве брзине сушења; Пројектовање сушара; Опште поставке при пројектовању сушара, основни захтеви код сушара, избор конструкције сушаре и помоћних уређаја код сушаре, избор агенса сушења и носиоца топлоте; Билансирање процеса; Материјални и енергетски биланс сушаре; Теоријска и стварна сушара; Графичко приказивање одвијања процеса у сушари; Топлотни прорачун сушара; Топлотни прорачун сушара помоћу равнотежног дијаграма "енталпија-састав" и "енталпија-температура", сушење загрејаним ваздухом и разблаженим димним гасовима и степен корисности конвективних сушара; Типови и класификација конструкција сушара; Помоћни уређаји сушара; Техноекономски показатељи рада сушара.

И тако, скоро тридесет година касније, као резултат вишегодишњег рада аутора у настави и инжењерској пракси у овој области започиње рад на књизи "Сушаре – теорија и задаци", првенствено ангажовањем предметног наставника професора др Милоша Кубуровића, и неколико сарадника. Петнаест година касније, уз велики труд и рад бројних колега са Факултета и ван њега, настала је ова верзија књиге, а материја обрађена у књизи постала је и саставни део предмета Сушаре на мастер студијама Модула за процесну технику и заштиту животне средине на Машинском факултету у Београду.

Првом рецензијом текста од стране професора др Димитрија Вороњеца, унапређена је сама концепција, али и начин приказа извода из теорије у поглављима књиге. Коначне верзије прегледали су др Ивона Радовић професор Технолошко-металуршког факултета у Београду и др Радивоје Топић професор Машинског факултета у Београду. Њихове сугестије су допринеле фином дотеривању књиге, на чему им се посебно захваљујемо.

Књига обухвата десет поглавља: (1) Прорачун параметара влажних материјала; (2) Термодинамичкa својства влажног ваздуха; (3) Материјални и топлотни биланс процеса сушења; (4) Прорачун параметара сушења, сушење разблаженим димним гасовима; (5) Прорачун параметара сушења са међузагревањем и рециркулацијом ваздуха; (6) Прорачун сушара при шаржном процесу сушења; (7) Прорачун цевних сушара; (8) Прорачун сушења у континуалним коморама за сушење са директним загревањем; (9) Прорачун ротационих сушара и (10) Прорачун сушара са флуидизованим и фонтанским слојем, са укупно 119 рачунских примера. На почетку сваког поглавља приказан је преглед коришћених једначина са допунама које су дате у осам прилога.

Надамо се да ће ова књига бити од помоћи и стручњацима који раде на пословима пројектовања и експлоатације постројења у којима се одвија процес сушења, као и студентима техничких факултета у чијим наставним програмима је ова област заступљена.

Унапред се захваљујемо на свим примедбама и сугестијама које ћемо узети у обзир и уградити у евентуално будуће издање или проширење ове књиге.

Како се ове године навршава 60 година од почетка наставе из области процесне технике на Машинском факултету у Београду, издавање књиге представља мали допринос овом јубилеју и омаж свим прегаоцима из области процесне технике са и ван Машинског факултета у Београду.
PB  - Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS) i Univerzitet u Beogradu Mašinski fakultet
T1  - Sušare - teorija i zadaci
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4841
ER  - 

@book{
author = "Obradović, Marko and Jovović, Aleksandar and Karan, Milenko and Đurić, Slavko and Radić, Dejan and Stanojević, Miroslav and Todorović, Dušan and Karličić, Nikola and Kuburović, Miloš",
year = "2019",
abstract = "Област процесне технике је као посебно усмерење у наставни план на Машински факултет Универзитета у Београду  технике уведена 1959. године. Развојем домаће процесне и прерађивачке индустрије, развијала се и настава увођењем предмета у којима су се изучавале технолошке операције са једне стране, и технолошки апарати и машине, са друге стране. Већ је наставни план од 1973. године обухватио седам предмета усмерења (Конструкција и прорачун апарата, Основе технолошких процеса, Машине и апарати за механичке и хидромеханичке операције, Простирање топлоте и масе, Технолошки и дифузиони апарати, Индустријске пећи), а настава из области сушења уводи се кроз посебан предмет Сушаре. Иако је сушење једна од многобројних процесних операција које су сврстане у основне процесне операције (механичке, хидромеханичке, топлотне, дифузионе, хемијске и биохемијске), због свог значаја и заступљености у многим технолошким процесима, издваја се као посебна целина за себе. У великом броју случајева добијање одређених производа заснива се првенствено на процесу сушења. На тај начин, наставни програм предмета Сушаре обухватио је следећа поглавља: Дефиниција процеса сушења, подела, примена и значај процеса и опреме за сушење, дефиниција основних величина, мерење масеног удела влаге; Статика процеса сушења; Кинетика процеса сушења; Кинетика конвективног сушења влажног материјала; Криве кинетике сушења; Криве брзине сушења; Пројектовање сушара; Опште поставке при пројектовању сушара, основни захтеви код сушара, избор конструкције сушаре и помоћних уређаја код сушаре, избор агенса сушења и носиоца топлоте; Билансирање процеса; Материјални и енергетски биланс сушаре; Теоријска и стварна сушара; Графичко приказивање одвијања процеса у сушари; Топлотни прорачун сушара; Топлотни прорачун сушара помоћу равнотежног дијаграма "енталпија-састав" и "енталпија-температура", сушење загрејаним ваздухом и разблаженим димним гасовима и степен корисности конвективних сушара; Типови и класификација конструкција сушара; Помоћни уређаји сушара; Техноекономски показатељи рада сушара.

И тако, скоро тридесет година касније, као резултат вишегодишњег рада аутора у настави и инжењерској пракси у овој области започиње рад на књизи "Сушаре – теорија и задаци", првенствено ангажовањем предметног наставника професора др Милоша Кубуровића, и неколико сарадника. Петнаест година касније, уз велики труд и рад бројних колега са Факултета и ван њега, настала је ова верзија књиге, а материја обрађена у књизи постала је и саставни део предмета Сушаре на мастер студијама Модула за процесну технику и заштиту животне средине на Машинском факултету у Београду.

Првом рецензијом текста од стране професора др Димитрија Вороњеца, унапређена је сама концепција, али и начин приказа извода из теорије у поглављима књиге. Коначне верзије прегледали су др Ивона Радовић професор Технолошко-металуршког факултета у Београду и др Радивоје Топић професор Машинског факултета у Београду. Њихове сугестије су допринеле фином дотеривању књиге, на чему им се посебно захваљујемо.

Књига обухвата десет поглавља: (1) Прорачун параметара влажних материјала; (2) Термодинамичкa својства влажног ваздуха; (3) Материјални и топлотни биланс процеса сушења; (4) Прорачун параметара сушења, сушење разблаженим димним гасовима; (5) Прорачун параметара сушења са међузагревањем и рециркулацијом ваздуха; (6) Прорачун сушара при шаржном процесу сушења; (7) Прорачун цевних сушара; (8) Прорачун сушења у континуалним коморама за сушење са директним загревањем; (9) Прорачун ротационих сушара и (10) Прорачун сушара са флуидизованим и фонтанским слојем, са укупно 119 рачунских примера. На почетку сваког поглавља приказан је преглед коришћених једначина са допунама које су дате у осам прилога.

Надамо се да ће ова књига бити од помоћи и стручњацима који раде на пословима пројектовања и експлоатације постројења у којима се одвија процес сушења, као и студентима техничких факултета у чијим наставним програмима је ова област заступљена.

Унапред се захваљујемо на свим примедбама и сугестијама које ћемо узети у обзир и уградити у евентуално будуће издање или проширење ове књиге.

Како се ове године навршава 60 година од почетка наставе из области процесне технике на Машинском факултету у Београду, издавање књиге представља мали допринос овом јубилеју и омаж свим прегаоцима из области процесне технике са и ван Машинског факултета у Београду.",
publisher = "Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS) i Univerzitet u Beogradu Mašinski fakultet",
title = "Sušare - teorija i zadaci",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4841"
}

Obradović, M., Jovović, A., Karan, M., Đurić, S., Radić, D., Stanojević, M., Todorović, D., Karličić, N.,& Kuburović, M.. (2019). Sušare - teorija i zadaci. 
Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS) i Univerzitet u Beogradu Mašinski fakultet..
https://hdl.handle.net/21.15107/rcub_machinery_4841

Obradović M, Jovović A, Karan M, Đurić S, Radić D, Stanojević M, Todorović D, Karličić N, Kuburović M. Sušare - teorija i zadaci. 2019;.
https://hdl.handle.net/21.15107/rcub_machinery_4841 .

Obradović, Marko, Jovović, Aleksandar, Karan, Milenko, Đurić, Slavko, Radić, Dejan, Stanojević, Miroslav, Todorović, Dušan, Karličić, Nikola, Kuburović, Miloš, "Sušare - teorija i zadaci" (2019),
https://hdl.handle.net/21.15107/rcub_machinery_4841 .

TY  - CONF
AU  - Todorović, Dušan
AU  - Obradović, Marko
AU  - Jovović, Aleksandar
AU  - Radić, Dejan
AU  - Karličić, Nikola
AU  - Stanojević, Miroslav
PY  - 2019
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4840
AB  - In order to investigate effect of fuel type and refinery furnace for atmospheric distillation capacity on dust emission field tests are performed. Tests include two different fuels (only refinery gas and mixture of 30% fuel oil and 70% refinery gas) and two different furnace capacity (80% and 100%). Those selected condition have been chosen for tests, as a most possible operating conditions. Usage of fuel oil or its mixture with refinery gas depends of current fuels availability within the refinery, while furnace capacity depends on current refinery production process. All procedures for field test are defined and performed in line with ISO 9096 Stationary source emissions — Manual determination of mass concentration of particulate matter, which describes a reference method for the measurement of particulate matter (dust) concentration in waste gases of concentrations from 20 mg/m3 to 1 000 mg/m3 under standard conditions and EN 13284-1 Stationary source emissions – Determination of low range mass concentration of dust – Part 1: Manual gravimetric method (for dust concentrations bellow 5 mg/m3). Furnace construction has been designed in that way that flue gases are discharging through three identical stacks, which are positioned along the top of furnace. All test are performed during the constant operating conditions and on each of stacks. Achieved results indicates that usage of mixture of fuel oil and refinery gas has higher potential for dust emissions comparing with usage of refinery gas only, namely significant difference in dust concentrations is noticed, while effect of furnace capacity on dust emissions, for both tested fuels, doesn’t show significant influence.
PB  - Belgrade : Vinča Institute of Nuclear Sciences
C3  - Abstracts of Keynote Invited Lectures and Contributed Papers of The Seventh International WeBIOPATR Workshop & Conference Particulate Matter: Research and Management WeBIOPATR 2019, 1st to 3rd October, 2019 Belgrade, Serbia
T1  - Effect of capacity and fuel type on dust emission from refinery furnace for atmospheric distillation
EP  - 77
SP  - 77
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4840
ER  - 

@conference{
author = "Todorović, Dušan and Obradović, Marko and Jovović, Aleksandar and Radić, Dejan and Karličić, Nikola and Stanojević, Miroslav",
year = "2019",
abstract = "In order to investigate effect of fuel type and refinery furnace for atmospheric distillation capacity on dust emission field tests are performed. Tests include two different fuels (only refinery gas and mixture of 30% fuel oil and 70% refinery gas) and two different furnace capacity (80% and 100%). Those selected condition have been chosen for tests, as a most possible operating conditions. Usage of fuel oil or its mixture with refinery gas depends of current fuels availability within the refinery, while furnace capacity depends on current refinery production process. All procedures for field test are defined and performed in line with ISO 9096 Stationary source emissions — Manual determination of mass concentration of particulate matter, which describes a reference method for the measurement of particulate matter (dust) concentration in waste gases of concentrations from 20 mg/m3 to 1 000 mg/m3 under standard conditions and EN 13284-1 Stationary source emissions – Determination of low range mass concentration of dust – Part 1: Manual gravimetric method (for dust concentrations bellow 5 mg/m3). Furnace construction has been designed in that way that flue gases are discharging through three identical stacks, which are positioned along the top of furnace. All test are performed during the constant operating conditions and on each of stacks. Achieved results indicates that usage of mixture of fuel oil and refinery gas has higher potential for dust emissions comparing with usage of refinery gas only, namely significant difference in dust concentrations is noticed, while effect of furnace capacity on dust emissions, for both tested fuels, doesn’t show significant influence.",
publisher = "Belgrade : Vinča Institute of Nuclear Sciences",
journal = "Abstracts of Keynote Invited Lectures and Contributed Papers of The Seventh International WeBIOPATR Workshop & Conference Particulate Matter: Research and Management WeBIOPATR 2019, 1st to 3rd October, 2019 Belgrade, Serbia",
title = "Effect of capacity and fuel type on dust emission from refinery furnace for atmospheric distillation",
pages = "77-77",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4840"
}

Todorović, D., Obradović, M., Jovović, A., Radić, D., Karličić, N.,& Stanojević, M.. (2019). Effect of capacity and fuel type on dust emission from refinery furnace for atmospheric distillation. in Abstracts of Keynote Invited Lectures and Contributed Papers of The Seventh International WeBIOPATR Workshop & Conference Particulate Matter: Research and Management WeBIOPATR 2019, 1st to 3rd October, 2019 Belgrade, Serbia
Belgrade : Vinča Institute of Nuclear Sciences., 77-77.
https://hdl.handle.net/21.15107/rcub_machinery_4840

Todorović D, Obradović M, Jovović A, Radić D, Karličić N, Stanojević M. Effect of capacity and fuel type on dust emission from refinery furnace for atmospheric distillation. in Abstracts of Keynote Invited Lectures and Contributed Papers of The Seventh International WeBIOPATR Workshop & Conference Particulate Matter: Research and Management WeBIOPATR 2019, 1st to 3rd October, 2019 Belgrade, Serbia. 2019;:77-77.
https://hdl.handle.net/21.15107/rcub_machinery_4840 .

Todorović, Dušan, Obradović, Marko, Jovović, Aleksandar, Radić, Dejan, Karličić, Nikola, Stanojević, Miroslav, "Effect of capacity and fuel type on dust emission from refinery furnace for atmospheric distillation" in Abstracts of Keynote Invited Lectures and Contributed Papers of The Seventh International WeBIOPATR Workshop & Conference Particulate Matter: Research and Management WeBIOPATR 2019, 1st to 3rd October, 2019 Belgrade, Serbia (2019):77-77,
https://hdl.handle.net/21.15107/rcub_machinery_4840 .

TY  - CONF
AU  - Karličić, Nikola
AU  - Stanojević, Miroslav
AU  - Jovović, Aleksandar
AU  - Radić, Dejan
AU  - Stamenić, Mirjana
AU  - Obradović, Marko
AU  - Todorović, Dušan
PY  - 2019
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4837
AB  - High volumes of coal fly ash are generated in thermal power plants all over the world. Fly ash characteristics primarily depend on coal type, combustion conditions and efficiency of particulate removal in thermal power plants. Therefore, all relevant fly ash characteristics must be investigated in order to design reliable pneumatic and hydraulic conveying systems for its removal from thermal power plants, transport to silos and disposal to landfills. A research study was conducted on more than 60 fly ash samples from a lignite fired thermal power plant. This research aim was to determine physical, chemical and aeration characteristics of fly ash samples in order to analyse their mutual correlation. Parameters that were correlated are mean diameter, bulk density, physical density, oxide compounds (SiO2, Al2O3, Fe2O3, Cao and MgO), and minimal fluidizing velocity. Simple linear regresion of experimental results showed that there was no strong correlation (R) between average diameter and bulk or physical density. Fly ash oxide composition showed significant correlation to mean diameter, but multiple linear regression should be done. Significant correlation ratio between minimal fluidization velocity and mean diameter, bulk and physical density could not be obtained.
PB  - Belgrade : Innovation Center of Faculty of Mechanical Engineering
C3  - The Book of Abstracts - International Conference of Experimental and Numerical Investigations and New Technologies CNN TECH, 2019, 27-27
T1  - Correlation analysis between physico-chemical and aeration characteristics of fly ash
EP  - 27
SP  - 27
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4837
ER  - 

@conference{
author = "Karličić, Nikola and Stanojević, Miroslav and Jovović, Aleksandar and Radić, Dejan and Stamenić, Mirjana and Obradović, Marko and Todorović, Dušan",
year = "2019",
abstract = "High volumes of coal fly ash are generated in thermal power plants all over the world. Fly ash characteristics primarily depend on coal type, combustion conditions and efficiency of particulate removal in thermal power plants. Therefore, all relevant fly ash characteristics must be investigated in order to design reliable pneumatic and hydraulic conveying systems for its removal from thermal power plants, transport to silos and disposal to landfills. A research study was conducted on more than 60 fly ash samples from a lignite fired thermal power plant. This research aim was to determine physical, chemical and aeration characteristics of fly ash samples in order to analyse their mutual correlation. Parameters that were correlated are mean diameter, bulk density, physical density, oxide compounds (SiO2, Al2O3, Fe2O3, Cao and MgO), and minimal fluidizing velocity. Simple linear regresion of experimental results showed that there was no strong correlation (R) between average diameter and bulk or physical density. Fly ash oxide composition showed significant correlation to mean diameter, but multiple linear regression should be done. Significant correlation ratio between minimal fluidization velocity and mean diameter, bulk and physical density could not be obtained.",
publisher = "Belgrade : Innovation Center of Faculty of Mechanical Engineering",
journal = "The Book of Abstracts - International Conference of Experimental and Numerical Investigations and New Technologies CNN TECH, 2019, 27-27",
title = "Correlation analysis between physico-chemical and aeration characteristics of fly ash",
pages = "27-27",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4837"
}

Karličić, N., Stanojević, M., Jovović, A., Radić, D., Stamenić, M., Obradović, M.,& Todorović, D.. (2019). Correlation analysis between physico-chemical and aeration characteristics of fly ash. in The Book of Abstracts - International Conference of Experimental and Numerical Investigations and New Technologies CNN TECH, 2019, 27-27
Belgrade : Innovation Center of Faculty of Mechanical Engineering., 27-27.
https://hdl.handle.net/21.15107/rcub_machinery_4837

Karličić N, Stanojević M, Jovović A, Radić D, Stamenić M, Obradović M, Todorović D. Correlation analysis between physico-chemical and aeration characteristics of fly ash. in The Book of Abstracts - International Conference of Experimental and Numerical Investigations and New Technologies CNN TECH, 2019, 27-27. 2019;:27-27.
https://hdl.handle.net/21.15107/rcub_machinery_4837 .

Karličić, Nikola, Stanojević, Miroslav, Jovović, Aleksandar, Radić, Dejan, Stamenić, Mirjana, Obradović, Marko, Todorović, Dušan, "Correlation analysis between physico-chemical and aeration characteristics of fly ash" in The Book of Abstracts - International Conference of Experimental and Numerical Investigations and New Technologies CNN TECH, 2019, 27-27 (2019):27-27,
https://hdl.handle.net/21.15107/rcub_machinery_4837 .

TY  - JOUR
AU  - Obradović, Marko
AU  - Radić, Dejan
AU  - Todorović, Dušan
AU  - Jovović, Aleksandar
AU  - Karličić, Nikola
AU  - Stanojević, Miroslav
PY  - 2019
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3194
AB  - This paper analyzes the effects of coal grindability and its characteristics on the grinding capacity and power consumption for beater wheel mill during exploitation in thermal power plant TENT B in Obrenovac, Serbia. For this purpose, experiments were made on the mill, before and after its reconstruction. Experiments included the determination of grinding capacity, mill power consumption, and laboratory analysis of coal characteristics and Hardgrove grindability index (HGI). The analysis of experimental results found that the grinding capacity has a negative correlation with the ash content in coal. Moisture content in analysis sample of coal has a positive correlation with the consumption of electricity and grinding capacity. Between the grinding capacity and the value of HGI exists a negative correlation. Analysis of the influence of grindability of coal and coal characteristics on grinding capacity and energy consumption was carried out. Based on coal characteristics and values of HGI, mathematical expressions were derived for the calculation of grinding capacity and electric energy consumption. In addition, ability to predict specific power consumption of the mill on the basis of HGI values, were carried out. Specific power consumption obtained from HGI values showed good agreement with the experimentally determined specific power consumption of the mill.
PB  - Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd
T2  - Thermal Science
T1  - Practical assessment of grinding capacity and power consumption based on hardgrove grindability index and coal characteristics
EP  - S1542
SP  - S1533
VL  - 23
DO  - 10.2298/TSCI1806053760
ER  - 

@article{
author = "Obradović, Marko and Radić, Dejan and Todorović, Dušan and Jovović, Aleksandar and Karličić, Nikola and Stanojević, Miroslav",
year = "2019",
abstract = "This paper analyzes the effects of coal grindability and its characteristics on the grinding capacity and power consumption for beater wheel mill during exploitation in thermal power plant TENT B in Obrenovac, Serbia. For this purpose, experiments were made on the mill, before and after its reconstruction. Experiments included the determination of grinding capacity, mill power consumption, and laboratory analysis of coal characteristics and Hardgrove grindability index (HGI). The analysis of experimental results found that the grinding capacity has a negative correlation with the ash content in coal. Moisture content in analysis sample of coal has a positive correlation with the consumption of electricity and grinding capacity. Between the grinding capacity and the value of HGI exists a negative correlation. Analysis of the influence of grindability of coal and coal characteristics on grinding capacity and energy consumption was carried out. Based on coal characteristics and values of HGI, mathematical expressions were derived for the calculation of grinding capacity and electric energy consumption. In addition, ability to predict specific power consumption of the mill on the basis of HGI values, were carried out. Specific power consumption obtained from HGI values showed good agreement with the experimentally determined specific power consumption of the mill.",
publisher = "Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd",
journal = "Thermal Science",
title = "Practical assessment of grinding capacity and power consumption based on hardgrove grindability index and coal characteristics",
pages = "S1542-S1533",
volume = "23",
doi = "10.2298/TSCI1806053760"
}

Obradović, M., Radić, D., Todorović, D., Jovović, A., Karličić, N.,& Stanojević, M.. (2019). Practical assessment of grinding capacity and power consumption based on hardgrove grindability index and coal characteristics. in Thermal Science
Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd., 23, S1533-S1542.
https://doi.org/10.2298/TSCI1806053760

Obradović M, Radić D, Todorović D, Jovović A, Karličić N, Stanojević M. Practical assessment of grinding capacity and power consumption based on hardgrove grindability index and coal characteristics. in Thermal Science. 2019;23:S1533-S1542.
doi:10.2298/TSCI1806053760 .

Obradović, Marko, Radić, Dejan, Todorović, Dušan, Jovović, Aleksandar, Karličić, Nikola, Stanojević, Miroslav, "Practical assessment of grinding capacity and power consumption based on hardgrove grindability index and coal characteristics" in Thermal Science, 23 (2019):S1533-S1542,
https://doi.org/10.2298/TSCI1806053760 . .

TY  - JOUR
AU  - Obradović, Marko
AU  - Radić, Dejan
AU  - Jovović, Aleksandar
AU  - Todorović, Dušan
AU  - Karličić, Nikola
AU  - Stanojević, Miroslav
PY  - 2018
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4696
AB  - Prilikom stavljanja postojećeg postrojenja u stanje trajne konzervacije sa pogonskom spremnošću za dalji rad (kratak ili dug period zastoja) potrebno je sprovesti posebne mere da bi se termoelektrana zaštitila od korozije u zastoju kao i da bi se izbegla pojava posledičnih oštećenja. Mere zaštite (konzervacije) prvenstveno imaju za cilj da se suprotstave koroziji u zastoju. Glavni i odlučujući aspekt za uspešnu konzervaciju je kompletno razmatranje svih sistema i komponenata kao i interakcija između mera konzervacije određenih sekcija što iziskuje detaljno planiranje i monitoring ovih mera. U radu je dato idejno rešenje konzervacije kotla koje se zasniva na vlažnom postupku konzervacije vodeno – parne strane cevnog sistema pomoću hidrazina i suvom postupku konzervacije sa strane dimnih gasova, uz prethodno hemijsko čišćenje kotla, pasivizaciju razmenjivačkih površina, zatvaranje kotla i dodavanje adsorbenta sa gasne strane kako bi se relativna vlažnost vazduha dovela u prihvatljive granice za konzervaciju.
PB  - Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS)
T2  - Procesna tehnika
T1  - Idejno rešenje konzervacije parnih kotlova u termoelektrani
EP  - 34
IS  - 2
SP  - 28
VL  - 30
DO  - 10.24094/ptc.018.30.2.28
ER  - 

@article{
author = "Obradović, Marko and Radić, Dejan and Jovović, Aleksandar and Todorović, Dušan and Karličić, Nikola and Stanojević, Miroslav",
year = "2018",
abstract = "Prilikom stavljanja postojećeg postrojenja u stanje trajne konzervacije sa pogonskom spremnošću za dalji rad (kratak ili dug period zastoja) potrebno je sprovesti posebne mere da bi se termoelektrana zaštitila od korozije u zastoju kao i da bi se izbegla pojava posledičnih oštećenja. Mere zaštite (konzervacije) prvenstveno imaju za cilj da se suprotstave koroziji u zastoju. Glavni i odlučujući aspekt za uspešnu konzervaciju je kompletno razmatranje svih sistema i komponenata kao i interakcija između mera konzervacije određenih sekcija što iziskuje detaljno planiranje i monitoring ovih mera. U radu je dato idejno rešenje konzervacije kotla koje se zasniva na vlažnom postupku konzervacije vodeno – parne strane cevnog sistema pomoću hidrazina i suvom postupku konzervacije sa strane dimnih gasova, uz prethodno hemijsko čišćenje kotla, pasivizaciju razmenjivačkih površina, zatvaranje kotla i dodavanje adsorbenta sa gasne strane kako bi se relativna vlažnost vazduha dovela u prihvatljive granice za konzervaciju.",
publisher = "Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS)",
journal = "Procesna tehnika",
title = "Idejno rešenje konzervacije parnih kotlova u termoelektrani",
pages = "34-28",
number = "2",
volume = "30",
doi = "10.24094/ptc.018.30.2.28"
}

Obradović, M., Radić, D., Jovović, A., Todorović, D., Karličić, N.,& Stanojević, M.. (2018). Idejno rešenje konzervacije parnih kotlova u termoelektrani. in Procesna tehnika
Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS)., 30(2), 28-34.
https://doi.org/10.24094/ptc.018.30.2.28

Obradović M, Radić D, Jovović A, Todorović D, Karličić N, Stanojević M. Idejno rešenje konzervacije parnih kotlova u termoelektrani. in Procesna tehnika. 2018;30(2):28-34.
doi:10.24094/ptc.018.30.2.28 .

Obradović, Marko, Radić, Dejan, Jovović, Aleksandar, Todorović, Dušan, Karličić, Nikola, Stanojević, Miroslav, "Idejno rešenje konzervacije parnih kotlova u termoelektrani" in Procesna tehnika, 30, no. 2 (2018):28-34,
https://doi.org/10.24094/ptc.018.30.2.28 . .

TY  - JOUR
AU  - Karličić, Nikola
AU  - Jovović, Aleksandar
AU  - Radić, Dejan
AU  - Obradović, Marko
AU  - Todorović, Dušan
AU  - Stanojević, Miroslav
PY  - 2018
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/2987
AB  - The aim of this experimental study was to evaluate the effect of permeability on the mode of flow that lignite fly ash will support in a pneumatic conveying pipeline. This research was initiated by recurring problems with the long distance and high capacity low grade lignite ash pneumatic conveying system at the 1200 MWe thermal power plant, such as clogging, unsteady flow mode, significant increase of velocity due to pressure drop and erosive wear of pipeline. Ash samples were taken during pneumatic conveying system clogging for further analysis. The experiment was limited to measuring parameters that provide data to determine minimum fluidizing velocity and permeability. The results showed very heterogeneous materials of group B by Geldart, what caused specific phenomenon during the experimental fluidization tests. Minimum fluidizing velocity for this kind of material is not authoritative for defining pneumatic conveying system, since extremely heterogeneous materials at this air speed will remain stationary or will convey very slow or with stoppage, and that required velocities are from 10 to 15 times higher than minimum fluidizing velocity. According to the results, this ash is the most suitable for dense phase pneumatic conveying.
PB  - Syscom 18 SRL
T2  - Revista de Chimie
T1  - The Effect of Permeability on Lignite Fly Ash Pneumatic Conveying System Design
EP  - 345
IS  - 2
SP  - 341
VL  - 69
DO  - 10.37358/rc.18.2.6103
ER  - 

@article{
author = "Karličić, Nikola and Jovović, Aleksandar and Radić, Dejan and Obradović, Marko and Todorović, Dušan and Stanojević, Miroslav",
year = "2018",
abstract = "The aim of this experimental study was to evaluate the effect of permeability on the mode of flow that lignite fly ash will support in a pneumatic conveying pipeline. This research was initiated by recurring problems with the long distance and high capacity low grade lignite ash pneumatic conveying system at the 1200 MWe thermal power plant, such as clogging, unsteady flow mode, significant increase of velocity due to pressure drop and erosive wear of pipeline. Ash samples were taken during pneumatic conveying system clogging for further analysis. The experiment was limited to measuring parameters that provide data to determine minimum fluidizing velocity and permeability. The results showed very heterogeneous materials of group B by Geldart, what caused specific phenomenon during the experimental fluidization tests. Minimum fluidizing velocity for this kind of material is not authoritative for defining pneumatic conveying system, since extremely heterogeneous materials at this air speed will remain stationary or will convey very slow or with stoppage, and that required velocities are from 10 to 15 times higher than minimum fluidizing velocity. According to the results, this ash is the most suitable for dense phase pneumatic conveying.",
publisher = "Syscom 18 SRL",
journal = "Revista de Chimie",
title = "The Effect of Permeability on Lignite Fly Ash Pneumatic Conveying System Design",
pages = "345-341",
number = "2",
volume = "69",
doi = "10.37358/rc.18.2.6103"
}

Karličić, N., Jovović, A., Radić, D., Obradović, M., Todorović, D.,& Stanojević, M.. (2018). The Effect of Permeability on Lignite Fly Ash Pneumatic Conveying System Design. in Revista de Chimie
Syscom 18 SRL., 69(2), 341-345.
https://doi.org/10.37358/rc.18.2.6103

Karličić N, Jovović A, Radić D, Obradović M, Todorović D, Stanojević M. The Effect of Permeability on Lignite Fly Ash Pneumatic Conveying System Design. in Revista de Chimie. 2018;69(2):341-345.
doi:10.37358/rc.18.2.6103 .

Karličić, Nikola, Jovović, Aleksandar, Radić, Dejan, Obradović, Marko, Todorović, Dušan, Stanojević, Miroslav, "The Effect of Permeability on Lignite Fly Ash Pneumatic Conveying System Design" in Revista de Chimie, 69, no. 2 (2018):341-345,
https://doi.org/10.37358/rc.18.2.6103 . .

TY  - CONF
AU  - Todorović, Dušan
AU  - Jovović, Aleksandar
AU  - Petrov, Olga
AU  - Radić, Dejan
AU  - Obradović, Marko
AU  - Stanojević, Miroslav
AU  - Karličić, Nikola
PY  - 2017
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4684
AB  - Dispersion modeling uses mathematical formulations to characterize the atmospheric processes that disperse a pollutant emitted by a source. Based on source parameters including emissions as well as meteorological inputs, a dispersion model can be used to predict concentrations at selected downwind receptor locations. In this study air dispersion modelling was used in order to evaluate the feasibility for the stack height reduction, in terms of air quality implications for the three major pollutants: SO2, NO2 and PM10. AERMOD View™ Gaussian plume air dispersion model was used. Two units, of the same coal thermal power plant, with existing separate stacks were analyzed as emission sources. Three stack heights of 200 m, 180 m, and 170 m with 6.7 m diameter were analyzed first followed by the scenario of a single, common stack for both units with the height of 180 m and 10.1 m diameter. Modeling presented in this study did not take into account background pollution levels, as it rather focused on the contribution of the given power plant to overall air quality. According to the obtained results, the scenario with 180 m high single concrete stack is the most favorable from the air quality point of view, within discussed scenarios.
AB  - U modelovanju raspršivanja koriste se matematičke formule kako bi odredile karaksteristike atmosferskih procesa koji raspršuju zagađivač koji se emituje iz nekog izvora. Na osnovu parametara izvora, uključujući emisije kao i meteorološke ulazne podatke, model raspršivanja se može koristiti za predviđanje koncentracija na izabranim lokacijama receptora u pravcu duvanja vetra. U ovoj studiji modelovanje raspršivanja vazduha izvršeno je kako bi se procenila izvodljivost (isplativost) smanjenja visine dimnjaka, u pogledu implikacija kvaliteta vazduha za tri glavna zagađivača: SO2, NO2 i PM10. Korišćen je AERMOD View™ Gaussov model dima za raspršivanje vazduha. Dve jedinice iste termoelektrane na ugalj, sa postojećim odvojenim dimnjacima, analizirane su kao izvori emisije. Prvo su analizirane tri visine dimnjaka - 200m, 180m i 170 m, sa prečnikom od 6,7 m, a zatim je usledio scenario sa jednim, zajedničkim dimnjakom za obe jedinice, koji ima visinu 180m i prečnik 10,1 m. U modelovanju prikazanom u ovoj studiji nisu uzeti u obzir nivoi okolnog zagađenja, jer je studija bila usmerena na doprinos date elektrane opštem kvalitetu vazduha. Na osnovu dobijenih rezultata, a u okviru razmatranih scenarija, scenario sa jednim betonskim dimnjakom visine 180 m predstavlja najpovoljnije rešenje sa stanovišta kvaliteta vazduha.
PB  - Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS)
C3  - Zbornik Međunarodnog kongresa o procesnoj industriji – Procesing, 4-5. jun 2015.
T1  - Modelovanje raspršivanja vazduha radi procene karakteristika dimnjaka
T1  - Using air dispersion modeling to evaluate stack characteristics
EP  - 240
IS  - 1
SP  - 224
VL  - 28
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4684
ER  - 

@conference{
author = "Todorović, Dušan and Jovović, Aleksandar and Petrov, Olga and Radić, Dejan and Obradović, Marko and Stanojević, Miroslav and Karličić, Nikola",
year = "2017",
abstract = "Dispersion modeling uses mathematical formulations to characterize the atmospheric processes that disperse a pollutant emitted by a source. Based on source parameters including emissions as well as meteorological inputs, a dispersion model can be used to predict concentrations at selected downwind receptor locations. In this study air dispersion modelling was used in order to evaluate the feasibility for the stack height reduction, in terms of air quality implications for the three major pollutants: SO2, NO2 and PM10. AERMOD View™ Gaussian plume air dispersion model was used. Two units, of the same coal thermal power plant, with existing separate stacks were analyzed as emission sources. Three stack heights of 200 m, 180 m, and 170 m with 6.7 m diameter were analyzed first followed by the scenario of a single, common stack for both units with the height of 180 m and 10.1 m diameter. Modeling presented in this study did not take into account background pollution levels, as it rather focused on the contribution of the given power plant to overall air quality. According to the obtained results, the scenario with 180 m high single concrete stack is the most favorable from the air quality point of view, within discussed scenarios., U modelovanju raspršivanja koriste se matematičke formule kako bi odredile karaksteristike atmosferskih procesa koji raspršuju zagađivač koji se emituje iz nekog izvora. Na osnovu parametara izvora, uključujući emisije kao i meteorološke ulazne podatke, model raspršivanja se može koristiti za predviđanje koncentracija na izabranim lokacijama receptora u pravcu duvanja vetra. U ovoj studiji modelovanje raspršivanja vazduha izvršeno je kako bi se procenila izvodljivost (isplativost) smanjenja visine dimnjaka, u pogledu implikacija kvaliteta vazduha za tri glavna zagađivača: SO2, NO2 i PM10. Korišćen je AERMOD View™ Gaussov model dima za raspršivanje vazduha. Dve jedinice iste termoelektrane na ugalj, sa postojećim odvojenim dimnjacima, analizirane su kao izvori emisije. Prvo su analizirane tri visine dimnjaka - 200m, 180m i 170 m, sa prečnikom od 6,7 m, a zatim je usledio scenario sa jednim, zajedničkim dimnjakom za obe jedinice, koji ima visinu 180m i prečnik 10,1 m. U modelovanju prikazanom u ovoj studiji nisu uzeti u obzir nivoi okolnog zagađenja, jer je studija bila usmerena na doprinos date elektrane opštem kvalitetu vazduha. Na osnovu dobijenih rezultata, a u okviru razmatranih scenarija, scenario sa jednim betonskim dimnjakom visine 180 m predstavlja najpovoljnije rešenje sa stanovišta kvaliteta vazduha.",
publisher = "Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS)",
journal = "Zbornik Međunarodnog kongresa o procesnoj industriji – Procesing, 4-5. jun 2015.",
title = "Modelovanje raspršivanja vazduha radi procene karakteristika dimnjaka, Using air dispersion modeling to evaluate stack characteristics",
pages = "240-224",
number = "1",
volume = "28",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4684"
}

Todorović, D., Jovović, A., Petrov, O., Radić, D., Obradović, M., Stanojević, M.,& Karličić, N.. (2017). Modelovanje raspršivanja vazduha radi procene karakteristika dimnjaka. in Zbornik Međunarodnog kongresa o procesnoj industriji – Procesing, 4-5. jun 2015.
Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS)., 28(1), 224-240.
https://hdl.handle.net/21.15107/rcub_machinery_4684

Todorović D, Jovović A, Petrov O, Radić D, Obradović M, Stanojević M, Karličić N. Modelovanje raspršivanja vazduha radi procene karakteristika dimnjaka. in Zbornik Međunarodnog kongresa o procesnoj industriji – Procesing, 4-5. jun 2015.. 2017;28(1):224-240.
https://hdl.handle.net/21.15107/rcub_machinery_4684 .

Todorović, Dušan, Jovović, Aleksandar, Petrov, Olga, Radić, Dejan, Obradović, Marko, Stanojević, Miroslav, Karličić, Nikola, "Modelovanje raspršivanja vazduha radi procene karakteristika dimnjaka" in Zbornik Međunarodnog kongresa o procesnoj industriji – Procesing, 4-5. jun 2015., 28, no. 1 (2017):224-240,
https://hdl.handle.net/21.15107/rcub_machinery_4684 .