TY  - JOUR
AU  - Stupar, Goran
AU  - Tucaković, Dragan
AU  - Živanović, Titoslav
AU  - Belošević, Srđan V.
AU  - Crnomarković, Nenad
PY  - 2019
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3231
AB  - This paper presents the results of calculation system of main processes in power steam boiler, before and after application of air staging. Modified air injection scheme was implemented during 2015 on the power steam boiler within unit 1 of TPP Kostolac B. Measurements performed on site showed that applied reconstruction led to a permanent loss of the steam boiler power. This study was performed in order to define the cause of such an occurrence and to consider the possibility for regaining the designed steam parameters along with keeping NOx concentration in prescribed limits. This paper discusses the influence of repositioning the air injection location on processes within the furnace. Furthermore, the influence of the redistribution of injected air-flow along the furnace height on important boiler operation parameters has been analyzed. Analysis showed that, with appropriate dosing of air along the height of the existing furnace, it is possible to achieve the optimum of the boiler's operation parameters. Results of research showed that air staging throughout the furnace height in best test case additionally reduces NO concentration (195-225 mg/Nm(3)) and increases the power of x considered boiler (828.8-751.1 MW) with an insignificant decrease of the boiler's efficiency (86.27-86.77%). Furthermore, the designed temperatures of superheated (540-498 degrees C) and reheated (540-518 degrees C) steam have been reached again, whereby the safety of the boiler's operation has been significantly increased. Results of this study improve the present explanation of the processes occurred in the furnace with applied primary measures. They also give directions on defining the most influential parameters on considered processes with the final purpose to increase the efficiency and availability of the entire plant.
PB  - Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd
T2  - Thermal Science
T1  - Air staging application effects on overall steam boiler operation
EP  - S1574
SP  - S1559
VL  - 23
DO  - 10.2298/TSCI180413286S
ER  - 

@article{
author = "Stupar, Goran and Tucaković, Dragan and Živanović, Titoslav and Belošević, Srđan V. and Crnomarković, Nenad",
year = "2019",
abstract = "This paper presents the results of calculation system of main processes in power steam boiler, before and after application of air staging. Modified air injection scheme was implemented during 2015 on the power steam boiler within unit 1 of TPP Kostolac B. Measurements performed on site showed that applied reconstruction led to a permanent loss of the steam boiler power. This study was performed in order to define the cause of such an occurrence and to consider the possibility for regaining the designed steam parameters along with keeping NOx concentration in prescribed limits. This paper discusses the influence of repositioning the air injection location on processes within the furnace. Furthermore, the influence of the redistribution of injected air-flow along the furnace height on important boiler operation parameters has been analyzed. Analysis showed that, with appropriate dosing of air along the height of the existing furnace, it is possible to achieve the optimum of the boiler's operation parameters. Results of research showed that air staging throughout the furnace height in best test case additionally reduces NO concentration (195-225 mg/Nm(3)) and increases the power of x considered boiler (828.8-751.1 MW) with an insignificant decrease of the boiler's efficiency (86.27-86.77%). Furthermore, the designed temperatures of superheated (540-498 degrees C) and reheated (540-518 degrees C) steam have been reached again, whereby the safety of the boiler's operation has been significantly increased. Results of this study improve the present explanation of the processes occurred in the furnace with applied primary measures. They also give directions on defining the most influential parameters on considered processes with the final purpose to increase the efficiency and availability of the entire plant.",
publisher = "Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd",
journal = "Thermal Science",
title = "Air staging application effects on overall steam boiler operation",
pages = "S1574-S1559",
volume = "23",
doi = "10.2298/TSCI180413286S"
}

Stupar, G., Tucaković, D., Živanović, T., Belošević, S. V.,& Crnomarković, N.. (2019). Air staging application effects on overall steam boiler operation. in Thermal Science
Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd., 23, S1559-S1574.
https://doi.org/10.2298/TSCI180413286S

Stupar G, Tucaković D, Živanović T, Belošević SV, Crnomarković N. Air staging application effects on overall steam boiler operation. in Thermal Science. 2019;23:S1559-S1574.
doi:10.2298/TSCI180413286S .

Stupar, Goran, Tucaković, Dragan, Živanović, Titoslav, Belošević, Srđan V., Crnomarković, Nenad, "Air staging application effects on overall steam boiler operation" in Thermal Science, 23 (2019):S1559-S1574,
https://doi.org/10.2298/TSCI180413286S . .

TY  - JOUR
AU  - Stupar, Goran
AU  - Tucaković, Dragan
AU  - Živanović, Titoslav
AU  - Stevanović, Žarko M.
AU  - Belošević, Srđan V.
PY  - 2019
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3062
AB  - The results of an extended research performed with the aim of investigating influence air staging application on processes occurred in boiler furnace have been presented in this paper. This subject was developed as a result of the need to obtain valid engineering methods for estimating the intensity of combustion and heat transfer processes under sub-stoichiometric conditions. The used calculation method, presented in previous publications, has been established by linking the differential mathematical model of processes in the furnace and conventional integral calculation procedures of all heating surfaces within the boiler. Such verified calculation method provided the algorithm for qualitative analysis of steam boiler operation regardless of the applied combustion scheme. In this research, by use of such approach, the operation of power boiler within TPP Kostolac has been assessed where combustion system was reconstructed during 2015. Calculation results in case of application of designed combustion system (UNR) and alternative air staging configuration (TC1) have been considered. In addition, the present air distribution scheme with the applied primary measures (R) has been analyzed. Comparison of such gained results listed in the same table ensures the trend of the change occurred by application of the air-staging system which needs to be more closely defined. Results of research showed that air staging throughout the furnace height slows down the combustion with the simultaneous intensification of the heat transfer process. Although this phenomenon led to the reduction in NOx concentration (195/470 mg/Nm(3), dry, 6% O-2), it decreased the power of considered boiler (725.5/774.0 MW) and increased boiler's efficiency (86.49/85.52%). Furthermore, due to the temperatures of super-heated (517.0/540.0 degrees C) and reheated (524.0/540.0 degrees C) steam being below the designed level, the safety of the boiler's operation was significantly affected. The study also reveals that the boiler's efficiency rate is, in any considered case with applied air staging system, higher due to the possibility to run the boiler with the lower value of excess air ratio (1.15/1.22). Additionally, results demonstrate that distribution of the amount of air, as well as air introduction location, can significantly influence parameters of superheated and reheated steam as well as the regulation area of the same.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Applied Thermal Engineering
T1  - Predicting effects of air staging application on existing coal-fired power steam boiler
EP  - 677
SP  - 665
VL  - 149
DO  - 10.1016/j.applthermaleng.2018.12.070
ER  - 

@article{
author = "Stupar, Goran and Tucaković, Dragan and Živanović, Titoslav and Stevanović, Žarko M. and Belošević, Srđan V.",
year = "2019",
abstract = "The results of an extended research performed with the aim of investigating influence air staging application on processes occurred in boiler furnace have been presented in this paper. This subject was developed as a result of the need to obtain valid engineering methods for estimating the intensity of combustion and heat transfer processes under sub-stoichiometric conditions. The used calculation method, presented in previous publications, has been established by linking the differential mathematical model of processes in the furnace and conventional integral calculation procedures of all heating surfaces within the boiler. Such verified calculation method provided the algorithm for qualitative analysis of steam boiler operation regardless of the applied combustion scheme. In this research, by use of such approach, the operation of power boiler within TPP Kostolac has been assessed where combustion system was reconstructed during 2015. Calculation results in case of application of designed combustion system (UNR) and alternative air staging configuration (TC1) have been considered. In addition, the present air distribution scheme with the applied primary measures (R) has been analyzed. Comparison of such gained results listed in the same table ensures the trend of the change occurred by application of the air-staging system which needs to be more closely defined. Results of research showed that air staging throughout the furnace height slows down the combustion with the simultaneous intensification of the heat transfer process. Although this phenomenon led to the reduction in NOx concentration (195/470 mg/Nm(3), dry, 6% O-2), it decreased the power of considered boiler (725.5/774.0 MW) and increased boiler's efficiency (86.49/85.52%). Furthermore, due to the temperatures of super-heated (517.0/540.0 degrees C) and reheated (524.0/540.0 degrees C) steam being below the designed level, the safety of the boiler's operation was significantly affected. The study also reveals that the boiler's efficiency rate is, in any considered case with applied air staging system, higher due to the possibility to run the boiler with the lower value of excess air ratio (1.15/1.22). Additionally, results demonstrate that distribution of the amount of air, as well as air introduction location, can significantly influence parameters of superheated and reheated steam as well as the regulation area of the same.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Applied Thermal Engineering",
title = "Predicting effects of air staging application on existing coal-fired power steam boiler",
pages = "677-665",
volume = "149",
doi = "10.1016/j.applthermaleng.2018.12.070"
}

Stupar, G., Tucaković, D., Živanović, T., Stevanović, Ž. M.,& Belošević, S. V.. (2019). Predicting effects of air staging application on existing coal-fired power steam boiler. in Applied Thermal Engineering
Pergamon-Elsevier Science Ltd, Oxford., 149, 665-677.
https://doi.org/10.1016/j.applthermaleng.2018.12.070

Stupar G, Tucaković D, Živanović T, Stevanović ŽM, Belošević SV. Predicting effects of air staging application on existing coal-fired power steam boiler. in Applied Thermal Engineering. 2019;149:665-677.
doi:10.1016/j.applthermaleng.2018.12.070 .

Stupar, Goran, Tucaković, Dragan, Živanović, Titoslav, Stevanović, Žarko M., Belošević, Srđan V., "Predicting effects of air staging application on existing coal-fired power steam boiler" in Applied Thermal Engineering, 149 (2019):665-677,
https://doi.org/10.1016/j.applthermaleng.2018.12.070 . .

TY  - CONF
AU  - Stamenković, Ognjen
AU  - Živanović, Titoslav
AU  - Tucaković, Dragan
AU  - Stupar, Goran
PY  - 2018
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6182
AB  - U radu su prikazani rezultati numeričke simulacije kretanja čestica ugljenog praha prilikom
napuštanja mlinskog inercijalnog separatora i ulaza u kanal aerosmeše. Korišćeni geometrijski
model u simulacijama obuhvata inercijalni separator ugljenog praha i deo kanala aerosmeše u
kome je analizirano strujanje dvokomponentne mešavine.
Model separatora identičan je inercijalnom separatoru ventilatorskog mlina N 400.42
koji je sastavni deo postrojenja za pripremu ugljenog praha u termoelektrani "Nikola Tesla" B.
Kanal aerosmeše predstavlja sledeći element nakon inercijalnog separatora kroz koji
struji aerosmeša. U korišćenom geometrijskom modelu površina i oblik poprečnog preseka
kanala konstantni su na celoj njegovoj dužini i identični su izlaznom poprečnom preseku
inercijalnog separatora. Ovakva koncepcija odgovara novijim konstrukcijama kanala koje se
ugrađuju prilikom rekonstrukcije postojećih višeetažnih gorionika u cilju ugradnje gorionika sa
niskom emisijom azotnih oksida nakon sagorevanja.
Za potrebe proračuna strujanja dvokomponentne mešavine korišćen je kombinovani
Oiler – Lagrange pristup. Oiler-ov pristup i k-ε turbulentni model korišćeni su za modeliranje
strujanja gasne faze dok su trajektorije čestica ugljenog praha različitih frakcija sračunate
primenom Lagrange-ovog DPM (Discrete Phase Model) modela.
Za potrebe definisanja graničnih uslova analiziranog strujnog prostora korišćena su
merenja izvršena na realnom modelu inercijalnog separatora u eksploataciji. Dostupna merenja
izvršena su u izlaznom poprečnom preseku predmetnog separatora pri jednom određenom
položaju tri regulacione klapne. Raspored čestica u ulaznom poprečnom preseku separatora
(izlazu iz mlina) variran je sve do postizanja poklapanja granulometrijske karakteristike ugljenog
praha u izlaznom poprečnom preseku sa pomenutim merenjima.
Nakon postizanja poklapanja sa rezultatima merenja izvršenim na separatoru u
eksploataciji u daljim simulacijama variran je položaj dve regulacione klapne: nezavisne klapne
postavljene ispod plafona separatora a ispred „kragne“ izlaznog kanala i tri regulacione klapne
vezane za zajednički pokretni mehanizam i postavljene u prelaznom, horizontalnom kanalu
separatora. Analizirano je strujanje aerosmeše za više različitih položaja svake od pomenutih
klapni. Nakon toga, razmatrano je kretanje čestica ugljenog praha različitih dimenzija u izlaznom
prostoru separatora i ulazu u kanal aerosmeše. Dodatno, izvršena je analiza rasporeda čestica
različitih dimenzija u dva poprečna preseka po visini dela kanala za aerosmešu.
Izvedeni zaključci na osnovu dobijenih rezultata mogu doprineti boljem uvidu u
kretanje ugljenih čestica različitih dimenzija prilikom napuštanja separatora. Takođe, oni se
mogu iskoristiti u cilju poboljšanja procesa razdvajanja frakcija čvrste faze u individualnim
modifikovanim sistemima za pripremu ugljenog praha sa direktnim uduvavanjem kao i u
kotlovima sa višeetažnim gorionicima.
PB  - Society of Thermal Engineers of Serbia
C3  - Full Papers Proceedings of Power Plants 2018
T1  - NUMERIČKA SIMULACIJA KRETANJA ČESTICA UGLJENOG PRAHA PRILIKOM NAPUŠTANJA MLINSKOG SEPARATORA KROZ KANAL AEROSMEŠE
EP  - 616
SP  - 604
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6182
ER  - 

@conference{
author = "Stamenković, Ognjen and Živanović, Titoslav and Tucaković, Dragan and Stupar, Goran",
year = "2018",
abstract = "U radu su prikazani rezultati numeričke simulacije kretanja čestica ugljenog praha prilikom
napuštanja mlinskog inercijalnog separatora i ulaza u kanal aerosmeše. Korišćeni geometrijski
model u simulacijama obuhvata inercijalni separator ugljenog praha i deo kanala aerosmeše u
kome je analizirano strujanje dvokomponentne mešavine.
Model separatora identičan je inercijalnom separatoru ventilatorskog mlina N 400.42
koji je sastavni deo postrojenja za pripremu ugljenog praha u termoelektrani "Nikola Tesla" B.
Kanal aerosmeše predstavlja sledeći element nakon inercijalnog separatora kroz koji
struji aerosmeša. U korišćenom geometrijskom modelu površina i oblik poprečnog preseka
kanala konstantni su na celoj njegovoj dužini i identični su izlaznom poprečnom preseku
inercijalnog separatora. Ovakva koncepcija odgovara novijim konstrukcijama kanala koje se
ugrađuju prilikom rekonstrukcije postojećih višeetažnih gorionika u cilju ugradnje gorionika sa
niskom emisijom azotnih oksida nakon sagorevanja.
Za potrebe proračuna strujanja dvokomponentne mešavine korišćen je kombinovani
Oiler – Lagrange pristup. Oiler-ov pristup i k-ε turbulentni model korišćeni su za modeliranje
strujanja gasne faze dok su trajektorije čestica ugljenog praha različitih frakcija sračunate
primenom Lagrange-ovog DPM (Discrete Phase Model) modela.
Za potrebe definisanja graničnih uslova analiziranog strujnog prostora korišćena su
merenja izvršena na realnom modelu inercijalnog separatora u eksploataciji. Dostupna merenja
izvršena su u izlaznom poprečnom preseku predmetnog separatora pri jednom određenom
položaju tri regulacione klapne. Raspored čestica u ulaznom poprečnom preseku separatora
(izlazu iz mlina) variran je sve do postizanja poklapanja granulometrijske karakteristike ugljenog
praha u izlaznom poprečnom preseku sa pomenutim merenjima.
Nakon postizanja poklapanja sa rezultatima merenja izvršenim na separatoru u
eksploataciji u daljim simulacijama variran je položaj dve regulacione klapne: nezavisne klapne
postavljene ispod plafona separatora a ispred „kragne“ izlaznog kanala i tri regulacione klapne
vezane za zajednički pokretni mehanizam i postavljene u prelaznom, horizontalnom kanalu
separatora. Analizirano je strujanje aerosmeše za više različitih položaja svake od pomenutih
klapni. Nakon toga, razmatrano je kretanje čestica ugljenog praha različitih dimenzija u izlaznom
prostoru separatora i ulazu u kanal aerosmeše. Dodatno, izvršena je analiza rasporeda čestica
različitih dimenzija u dva poprečna preseka po visini dela kanala za aerosmešu.
Izvedeni zaključci na osnovu dobijenih rezultata mogu doprineti boljem uvidu u
kretanje ugljenih čestica različitih dimenzija prilikom napuštanja separatora. Takođe, oni se
mogu iskoristiti u cilju poboljšanja procesa razdvajanja frakcija čvrste faze u individualnim
modifikovanim sistemima za pripremu ugljenog praha sa direktnim uduvavanjem kao i u
kotlovima sa višeetažnim gorionicima.",
publisher = "Society of Thermal Engineers of Serbia",
journal = "Full Papers Proceedings of Power Plants 2018",
title = "NUMERIČKA SIMULACIJA KRETANJA ČESTICA UGLJENOG PRAHA PRILIKOM NAPUŠTANJA MLINSKOG SEPARATORA KROZ KANAL AEROSMEŠE",
pages = "616-604",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6182"
}

Stamenković, O., Živanović, T., Tucaković, D.,& Stupar, G.. (2018). NUMERIČKA SIMULACIJA KRETANJA ČESTICA UGLJENOG PRAHA PRILIKOM NAPUŠTANJA MLINSKOG SEPARATORA KROZ KANAL AEROSMEŠE. in Full Papers Proceedings of Power Plants 2018
Society of Thermal Engineers of Serbia., 604-616.
https://hdl.handle.net/21.15107/rcub_machinery_6182

Stamenković O, Živanović T, Tucaković D, Stupar G. NUMERIČKA SIMULACIJA KRETANJA ČESTICA UGLJENOG PRAHA PRILIKOM NAPUŠTANJA MLINSKOG SEPARATORA KROZ KANAL AEROSMEŠE. in Full Papers Proceedings of Power Plants 2018. 2018;:604-616.
https://hdl.handle.net/21.15107/rcub_machinery_6182 .

Stamenković, Ognjen, Živanović, Titoslav, Tucaković, Dragan, Stupar, Goran, "NUMERIČKA SIMULACIJA KRETANJA ČESTICA UGLJENOG PRAHA PRILIKOM NAPUŠTANJA MLINSKOG SEPARATORA KROZ KANAL AEROSMEŠE" in Full Papers Proceedings of Power Plants 2018 (2018):604-616,
https://hdl.handle.net/21.15107/rcub_machinery_6182 .

TY  - CONF
AU  - Stupar, Goran
AU  - Tucaković, Dragan
AU  - Živanović, Titoslav
AU  - Belošević, Srđan V.
AU  - Stamenković, Ognjen
PY  - 2016
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6373
AB  - Законске мере при сагоревању угљеног праха у енергетским парним котловима
прописују максимални садржај азотних оксида од 200 mg/Nm3 у сувим димним гасовима при
садржају кисеоника од 6 %. Сходно томе је у термоелектрани Костолац 2015. године на
блоку 1 примењена примарна мера вишестепеног довођења ваздуха по висини ложишта.
Ради анализе ефеката модернизације на рад парног котла у целини, извршено је прорачунско
спрезање диференцијалних математичких модела процеса сагоревања честица угљеног
праха, струјања, зрачења продуката сагоревања и настајања азотних оксида са интегралним
термичким и аеродинамичким прорачунским процедурама. Овакав прорачунски систем
омогућава поуздано предвиђање радних карактеристика енергетских парних котлова и у
условима подстехиометријског сагоревања, а његовом применом квалитет рада самог котла
могуће је проценити са аспекта ефективног, ефикасног, сигурног и еколошки прихватљивог
начина рада. На овакав начин омогућено је формирање свеобухватног описа погонског
режима енергетског парног котла. Спроведена анализа нарочито је битна с обзиром да рад
котла може имати пресудан утицај на расположивост и економичност целокупног
термоенергетског система. На основу наведеног извршени су прорачуни парног котла блока
1 ТЕ Костолац Б за постојећи и реорганизовани систем сагоревања. У раду је приказана
анализа утицаја већег броја параметара на рад парног котла са изведеним концептом
примарних мера.
Приказани систем прорачуна за рад котла је верификован мерењем извршеним на
предметном објекту.
PB  - Society of Thermal Engineers of Serbia
C3  - Proceedings of Power Plants 2016
T1  - IMPACT ANALYSIS OF PRIMARY MEASURES REDUCTION OF NOX PROCESSES IN ENERGY STEAM BOILER OF UNIT B1 TPP KOSTOLAC
EP  - 634
SP  - 622
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6373
ER  - 

@conference{
author = "Stupar, Goran and Tucaković, Dragan and Živanović, Titoslav and Belošević, Srđan V. and Stamenković, Ognjen",
year = "2016",
abstract = "Законске мере при сагоревању угљеног праха у енергетским парним котловима
прописују максимални садржај азотних оксида од 200 mg/Nm3 у сувим димним гасовима при
садржају кисеоника од 6 %. Сходно томе је у термоелектрани Костолац 2015. године на
блоку 1 примењена примарна мера вишестепеног довођења ваздуха по висини ложишта.
Ради анализе ефеката модернизације на рад парног котла у целини, извршено је прорачунско
спрезање диференцијалних математичких модела процеса сагоревања честица угљеног
праха, струјања, зрачења продуката сагоревања и настајања азотних оксида са интегралним
термичким и аеродинамичким прорачунским процедурама. Овакав прорачунски систем
омогућава поуздано предвиђање радних карактеристика енергетских парних котлова и у
условима подстехиометријског сагоревања, а његовом применом квалитет рада самог котла
могуће је проценити са аспекта ефективног, ефикасног, сигурног и еколошки прихватљивог
начина рада. На овакав начин омогућено је формирање свеобухватног описа погонског
режима енергетског парног котла. Спроведена анализа нарочито је битна с обзиром да рад
котла може имати пресудан утицај на расположивост и економичност целокупног
термоенергетског система. На основу наведеног извршени су прорачуни парног котла блока
1 ТЕ Костолац Б за постојећи и реорганизовани систем сагоревања. У раду је приказана
анализа утицаја већег броја параметара на рад парног котла са изведеним концептом
примарних мера.
Приказани систем прорачуна за рад котла је верификован мерењем извршеним на
предметном објекту.",
publisher = "Society of Thermal Engineers of Serbia",
journal = "Proceedings of Power Plants 2016",
title = "IMPACT ANALYSIS OF PRIMARY MEASURES REDUCTION OF NOX PROCESSES IN ENERGY STEAM BOILER OF UNIT B1 TPP KOSTOLAC",
pages = "634-622",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6373"
}

Stupar, G., Tucaković, D., Živanović, T., Belošević, S. V.,& Stamenković, O.. (2016). IMPACT ANALYSIS OF PRIMARY MEASURES REDUCTION OF NOX PROCESSES IN ENERGY STEAM BOILER OF UNIT B1 TPP KOSTOLAC. in Proceedings of Power Plants 2016
Society of Thermal Engineers of Serbia., 622-634.
https://hdl.handle.net/21.15107/rcub_machinery_6373

Stupar G, Tucaković D, Živanović T, Belošević SV, Stamenković O. IMPACT ANALYSIS OF PRIMARY MEASURES REDUCTION OF NOX PROCESSES IN ENERGY STEAM BOILER OF UNIT B1 TPP KOSTOLAC. in Proceedings of Power Plants 2016. 2016;:622-634.
https://hdl.handle.net/21.15107/rcub_machinery_6373 .

Stupar, Goran, Tucaković, Dragan, Živanović, Titoslav, Belošević, Srđan V., Stamenković, Ognjen, "IMPACT ANALYSIS OF PRIMARY MEASURES REDUCTION OF NOX PROCESSES IN ENERGY STEAM BOILER OF UNIT B1 TPP KOSTOLAC" in Proceedings of Power Plants 2016 (2016):622-634,
https://hdl.handle.net/21.15107/rcub_machinery_6373 .

TY  - CONF
AU  - Stamenković, Ognjen
AU  - Živanović, Titoslav
AU  - Tucaković, Dragan
AU  - Stupar, Goran
PY  - 2016
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6186
AB  - This paper presents the results of CFD simulation of multiphase flow within inertial separator
in ventilation mill N. 400.42 of „TENT B2“ thermal power plant. Obtained results impersonate
the influence of lower flaps positions within the separator on fineness of coal powder grinding
on the exit of mill separator.
According to the real size model, 3D geometry with high rate of resemblance has been made.
Taking in consideration number of cells, convergence time period and accuracy of the obtained
solutions, appropriate numerical grid has been performed and used in simulations. Standard k-ε
model for solving the gas phase turbulent model is used. Modeling of monodisperse coal
particles flow within the gas phase is performed by use of integrated Lagrangian DPM
(Discrete Phase Model) method. The measurements obtained on real time scale model are used
in purpose of setting the boundary conditions in case of horizontal position of the lower
regulation flaps - S13. Afterwards, simulations with setting the flaps in 3 new/different
positions have been performed.
Results show the influence of the lower regulation flaps positions on the coal powder
distribution and residual of coal particles on particular sieves on the outflow surface of inertial
separator. The trends of inflection of these parameters can be c
PB  - Society of Thermal Engineers of Serbia
C3  - Proceedings of Power Plants 2016
T1  - 3-D NUMERICAL SIMULATION OF TWO-PHASE FLOW DURING SEPARATION PROCESS OF COAL POWDER IN MILL INERTIAL SEPARATOR
EP  - 668
SP  - 658
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6186
ER  - 

@conference{
author = "Stamenković, Ognjen and Živanović, Titoslav and Tucaković, Dragan and Stupar, Goran",
year = "2016",
abstract = "This paper presents the results of CFD simulation of multiphase flow within inertial separator
in ventilation mill N. 400.42 of „TENT B2“ thermal power plant. Obtained results impersonate
the influence of lower flaps positions within the separator on fineness of coal powder grinding
on the exit of mill separator.
According to the real size model, 3D geometry with high rate of resemblance has been made.
Taking in consideration number of cells, convergence time period and accuracy of the obtained
solutions, appropriate numerical grid has been performed and used in simulations. Standard k-ε
model for solving the gas phase turbulent model is used. Modeling of monodisperse coal
particles flow within the gas phase is performed by use of integrated Lagrangian DPM
(Discrete Phase Model) method. The measurements obtained on real time scale model are used
in purpose of setting the boundary conditions in case of horizontal position of the lower
regulation flaps - S13. Afterwards, simulations with setting the flaps in 3 new/different
positions have been performed.
Results show the influence of the lower regulation flaps positions on the coal powder
distribution and residual of coal particles on particular sieves on the outflow surface of inertial
separator. The trends of inflection of these parameters can be c",
publisher = "Society of Thermal Engineers of Serbia",
journal = "Proceedings of Power Plants 2016",
title = "3-D NUMERICAL SIMULATION OF TWO-PHASE FLOW DURING SEPARATION PROCESS OF COAL POWDER IN MILL INERTIAL SEPARATOR",
pages = "668-658",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6186"
}

Stamenković, O., Živanović, T., Tucaković, D.,& Stupar, G.. (2016). 3-D NUMERICAL SIMULATION OF TWO-PHASE FLOW DURING SEPARATION PROCESS OF COAL POWDER IN MILL INERTIAL SEPARATOR. in Proceedings of Power Plants 2016
Society of Thermal Engineers of Serbia., 658-668.
https://hdl.handle.net/21.15107/rcub_machinery_6186

Stamenković O, Živanović T, Tucaković D, Stupar G. 3-D NUMERICAL SIMULATION OF TWO-PHASE FLOW DURING SEPARATION PROCESS OF COAL POWDER IN MILL INERTIAL SEPARATOR. in Proceedings of Power Plants 2016. 2016;:658-668.
https://hdl.handle.net/21.15107/rcub_machinery_6186 .

Stamenković, Ognjen, Živanović, Titoslav, Tucaković, Dragan, Stupar, Goran, "3-D NUMERICAL SIMULATION OF TWO-PHASE FLOW DURING SEPARATION PROCESS OF COAL POWDER IN MILL INERTIAL SEPARATOR" in Proceedings of Power Plants 2016 (2016):658-668,
https://hdl.handle.net/21.15107/rcub_machinery_6186 .

TY  - JOUR
AU  - Belošević, Srđan V.
AU  - Tomanović, Ivan
AU  - Beljanski, Vladimir
AU  - Tucaković, Dragan
AU  - Živanović, Titoslav
PY  - 2015
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/2213
AB  - Coal-fired power plant technologies should provide higher efficiency of energy conversion, reduction of pollutants emission, operation of facilities in a wide range of loads and efficient utilization of variable quality fuels. In order to achieve these tasks, mathematical modeling is regularly used worldwide for optimization of boiler operation. Reduction of pollutants emission is the task of greatest concerns. Among the most important pollutants are oxides of nitrogen and sulfur. Combustion process modifications for NOx control and sorbent injection for SO2 control are cost-effective clean coal technologies, used either standalone or with other methods. An in-house developed computer code was applied for simulation of processes in the 350 MWe boiler furnace, tangentially fired by pulverized lignite. Predictions suggested optimal combustion organization providing the NOx emission reduction of up to 20 -30%, with the flame position improvement. Boiler thermal calculations showed that the facility was to be controlled within narrow limits of working parameters. SO2 reduction by injection of Ca-based sorbent particles into the furnace was simulated for different operation parameters. Such a complex approach enables effective evaluation of alternative solutions, considering emissions, flame position and efficiency of furnace processes and the boiler unit.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Applied Thermal Engineering
T1  - Numerical prediction of processes for clean and efficient combustion of pulverized coal in power plants
EP  - 110
SP  - 102
VL  - 74
DO  - 10.1016/j.applthermaleng.2013.11.019
ER  - 

@article{
author = "Belošević, Srđan V. and Tomanović, Ivan and Beljanski, Vladimir and Tucaković, Dragan and Živanović, Titoslav",
year = "2015",
abstract = "Coal-fired power plant technologies should provide higher efficiency of energy conversion, reduction of pollutants emission, operation of facilities in a wide range of loads and efficient utilization of variable quality fuels. In order to achieve these tasks, mathematical modeling is regularly used worldwide for optimization of boiler operation. Reduction of pollutants emission is the task of greatest concerns. Among the most important pollutants are oxides of nitrogen and sulfur. Combustion process modifications for NOx control and sorbent injection for SO2 control are cost-effective clean coal technologies, used either standalone or with other methods. An in-house developed computer code was applied for simulation of processes in the 350 MWe boiler furnace, tangentially fired by pulverized lignite. Predictions suggested optimal combustion organization providing the NOx emission reduction of up to 20 -30%, with the flame position improvement. Boiler thermal calculations showed that the facility was to be controlled within narrow limits of working parameters. SO2 reduction by injection of Ca-based sorbent particles into the furnace was simulated for different operation parameters. Such a complex approach enables effective evaluation of alternative solutions, considering emissions, flame position and efficiency of furnace processes and the boiler unit.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Applied Thermal Engineering",
title = "Numerical prediction of processes for clean and efficient combustion of pulverized coal in power plants",
pages = "110-102",
volume = "74",
doi = "10.1016/j.applthermaleng.2013.11.019"
}

Belošević, S. V., Tomanović, I., Beljanski, V., Tucaković, D.,& Živanović, T.. (2015). Numerical prediction of processes for clean and efficient combustion of pulverized coal in power plants. in Applied Thermal Engineering
Pergamon-Elsevier Science Ltd, Oxford., 74, 102-110.
https://doi.org/10.1016/j.applthermaleng.2013.11.019

Belošević SV, Tomanović I, Beljanski V, Tucaković D, Živanović T. Numerical prediction of processes for clean and efficient combustion of pulverized coal in power plants. in Applied Thermal Engineering. 2015;74:102-110.
doi:10.1016/j.applthermaleng.2013.11.019 .

Belošević, Srđan V., Tomanović, Ivan, Beljanski, Vladimir, Tucaković, Dragan, Živanović, Titoslav, "Numerical prediction of processes for clean and efficient combustion of pulverized coal in power plants" in Applied Thermal Engineering, 74 (2015):102-110,
https://doi.org/10.1016/j.applthermaleng.2013.11.019 . .

TY  - JOUR
AU  - Stupar, Goran
AU  - Tucaković, Dragan
AU  - Živanović, Titoslav
AU  - Belošević, Srđan V.
PY  - 2015
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/2190
AB  - The European normatives prescribe content of 200 mg/Nm(3) NO for pulverized coal combusting power plants. In order to reduce content of NOx in Serbian thermal power plant (TPP) square Kostolac B square it's necessary to implement particular measures until 2016. The mathematical model of lignite combustion in the steam boiler furnace is defined and applied to analyze the possibility of implementing certain primary measures for reducing nitrogen oxides and their effects on the steam boiler operation. This model includes processes in the coal-fired furnace and defines radiating reactive two-phase turbulent flow. The model of turbulent flow also contains sub-model of fuel and thermal NOx formation and destruction. This complex mathematical model is related to thermal and aerodynamic calculations of the steam boiler within a unified calculation system in order to analyze the steam boiler overall work. This system provides calculations with a number of influential parameters. The steam boiler calculations for unit 1 (350 MWe) of TPP square Kostolac B square are implemented for existing and modified combustion system in order to achieve effective, reliable and ecological facility work. The paper presents the influence analysis of large number of parameters on the steam boiler operation with an accepted concept of primary measures. Presented system of calculations is verified against measurements in TPP square Kostolac B square.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Applied Thermal Engineering
T1  - Assessing the impact of primary measures for NOx reduction on the thermal power plant steam boiler
EP  - 409
SP  - 397
VL  - 78
DO  - 10.1016/j.applthermaleng.2014.12.074
ER  - 

@article{
author = "Stupar, Goran and Tucaković, Dragan and Živanović, Titoslav and Belošević, Srđan V.",
year = "2015",
abstract = "The European normatives prescribe content of 200 mg/Nm(3) NO for pulverized coal combusting power plants. In order to reduce content of NOx in Serbian thermal power plant (TPP) square Kostolac B square it's necessary to implement particular measures until 2016. The mathematical model of lignite combustion in the steam boiler furnace is defined and applied to analyze the possibility of implementing certain primary measures for reducing nitrogen oxides and their effects on the steam boiler operation. This model includes processes in the coal-fired furnace and defines radiating reactive two-phase turbulent flow. The model of turbulent flow also contains sub-model of fuel and thermal NOx formation and destruction. This complex mathematical model is related to thermal and aerodynamic calculations of the steam boiler within a unified calculation system in order to analyze the steam boiler overall work. This system provides calculations with a number of influential parameters. The steam boiler calculations for unit 1 (350 MWe) of TPP square Kostolac B square are implemented for existing and modified combustion system in order to achieve effective, reliable and ecological facility work. The paper presents the influence analysis of large number of parameters on the steam boiler operation with an accepted concept of primary measures. Presented system of calculations is verified against measurements in TPP square Kostolac B square.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Applied Thermal Engineering",
title = "Assessing the impact of primary measures for NOx reduction on the thermal power plant steam boiler",
pages = "409-397",
volume = "78",
doi = "10.1016/j.applthermaleng.2014.12.074"
}

Stupar, G., Tucaković, D., Živanović, T.,& Belošević, S. V.. (2015). Assessing the impact of primary measures for NOx reduction on the thermal power plant steam boiler. in Applied Thermal Engineering
Pergamon-Elsevier Science Ltd, Oxford., 78, 397-409.
https://doi.org/10.1016/j.applthermaleng.2014.12.074

Stupar G, Tucaković D, Živanović T, Belošević SV. Assessing the impact of primary measures for NOx reduction on the thermal power plant steam boiler. in Applied Thermal Engineering. 2015;78:397-409.
doi:10.1016/j.applthermaleng.2014.12.074 .

Stupar, Goran, Tucaković, Dragan, Živanović, Titoslav, Belošević, Srđan V., "Assessing the impact of primary measures for NOx reduction on the thermal power plant steam boiler" in Applied Thermal Engineering, 78 (2015):397-409,
https://doi.org/10.1016/j.applthermaleng.2014.12.074 . .

TY  - JOUR
AU  - Crnomarković, Nenad
AU  - Sijerčić, Miroslav
AU  - Belošević, Srđan V.
AU  - Tucaković, Dragan
AU  - Živanović, Titoslav
PY  - 2014
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/1910
AB  - The objective of the research was to find if an agreement of the results of a numerical investigation with experimental data could be achieved considering the two-phase medium in thermal equilibrium. Influence of the gray radiative properties on the radiative heat exchange inside pulverized lignite fired furnaces was investigated using the computational fluid dynamics (CFD) code based on a comprehensive mathematical model of the process. Radiative heat exchange was calculated using Hottel's zonal model. Heat transfer rates and wall fluxes increased for small values of the total extinction coefficient, K-t  lt  0.2 m(-1); decreased for large values of K-t, K-t > 2.0 m(-1); and were maximal for moderate values of K-t, 0.2  lt  K-t  lt  2.0 m(-1). Heat transfer rates and wall fluxes decreased with the increase of the scattering albedo, though the decrease was considerable only for omega > 0.5. Agreement with the experimental data was obtained for the moderate values of the K-t and for scattering albedo 0.1  lt  omega  lt  0.5.
PB  - Elsevier France-Editions Scientifiques Medicales Elsevier, Paris
T2  - International Journal of Thermal Sciences
T1  - Radiative heat exchange inside the pulverized lignite fired furnace for the gray radiative properties with thermal equilibrium between phases
EP  - 28
SP  - 21
VL  - 85
DO  - 10.1016/j.ijthermalsci.2014.06.014
ER  - 

@article{
author = "Crnomarković, Nenad and Sijerčić, Miroslav and Belošević, Srđan V. and Tucaković, Dragan and Živanović, Titoslav",
year = "2014",
abstract = "The objective of the research was to find if an agreement of the results of a numerical investigation with experimental data could be achieved considering the two-phase medium in thermal equilibrium. Influence of the gray radiative properties on the radiative heat exchange inside pulverized lignite fired furnaces was investigated using the computational fluid dynamics (CFD) code based on a comprehensive mathematical model of the process. Radiative heat exchange was calculated using Hottel's zonal model. Heat transfer rates and wall fluxes increased for small values of the total extinction coefficient, K-t  lt  0.2 m(-1); decreased for large values of K-t, K-t > 2.0 m(-1); and were maximal for moderate values of K-t, 0.2  lt  K-t  lt  2.0 m(-1). Heat transfer rates and wall fluxes decreased with the increase of the scattering albedo, though the decrease was considerable only for omega > 0.5. Agreement with the experimental data was obtained for the moderate values of the K-t and for scattering albedo 0.1  lt  omega  lt  0.5.",
publisher = "Elsevier France-Editions Scientifiques Medicales Elsevier, Paris",
journal = "International Journal of Thermal Sciences",
title = "Radiative heat exchange inside the pulverized lignite fired furnace for the gray radiative properties with thermal equilibrium between phases",
pages = "28-21",
volume = "85",
doi = "10.1016/j.ijthermalsci.2014.06.014"
}

Crnomarković, N., Sijerčić, M., Belošević, S. V., Tucaković, D.,& Živanović, T.. (2014). Radiative heat exchange inside the pulverized lignite fired furnace for the gray radiative properties with thermal equilibrium between phases. in International Journal of Thermal Sciences
Elsevier France-Editions Scientifiques Medicales Elsevier, Paris., 85, 21-28.
https://doi.org/10.1016/j.ijthermalsci.2014.06.014

Crnomarković N, Sijerčić M, Belošević SV, Tucaković D, Živanović T. Radiative heat exchange inside the pulverized lignite fired furnace for the gray radiative properties with thermal equilibrium between phases. in International Journal of Thermal Sciences. 2014;85:21-28.
doi:10.1016/j.ijthermalsci.2014.06.014 .

Crnomarković, Nenad, Sijerčić, Miroslav, Belošević, Srđan V., Tucaković, Dragan, Živanović, Titoslav, "Radiative heat exchange inside the pulverized lignite fired furnace for the gray radiative properties with thermal equilibrium between phases" in International Journal of Thermal Sciences, 85 (2014):21-28,
https://doi.org/10.1016/j.ijthermalsci.2014.06.014 . .

TY  - JOUR
AU  - Tomanović, Ivan D.
AU  - Belošević, Srđan V.
AU  - Sijerčić, Miroslav
AU  - Beljanski, Vladimir
AU  - Tucaković, Dragan
AU  - Živanović, Titoslav
AU  - Nemoda, Stevan
PY  - 2013
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/1636
AB  - Razvijen je matematički model, namenjen za predviđanje procesa u energetskim parnim kotlovima TE Kostolac B tangencijalno loženim sprašenim lignitom. Model je primenjen za numeričku analizu rada kotla radi smanjenja emisije NOx, uz istovremeno održavanje visokog stepena korisnosti kotla. Kompleksni dvofazni tok gas-čestice modeliran je Ojler-Lagranževim pristupom. Povezivanje faza je ostvareno kuplovanjem pomoću PSI-Cell koncepta. Radi ostvarivanja željenih analiza, ugrađen je pod-model formiranja/destrukcije NO, unutar složenog koda za sagorevanje, koji se koristi za predviđanje emisije na izlazu iz ložišta. Modelirani su termički i gorivi NO, kao najuticajniji oksidi azota pri sagorevanju ugljenog praha. Proračunski program je razvijen radi lakše upotrebe od strane inženjerskog osoblja prilikom analiza procesa u kotlovskim postrojenjima. Numeričke simulacije su izvršene za različite radne uslove kotla, prilikom loženja lignitom sa kopa Drmno. Suprotstavljeni zahtevi a smanjenjem emisije i efikasnim sagorevanjem, sa osvrtom na bezbedan rad pregrejača pare često zahtevaju rad kotla u uskim granicama radnih parametara, koji su utvrđeni pomoću termičkog proračuna kotla.
AB  - Mathematical model, aimed for prediction of processes in TE Kostolac B power plant utility boiler furnace tangentially fired by pulverized lignite, was developed in-house. The model was applied in numerical analysis of boiler operation, in order to reduce NOx emission by combustion modifications in the furnace, while maintaining high efficiency of the boiler unit. Complex two-phase gas-particle flow was modelled using Euler-Lagrange approach. Coupling between phases was done by using PSI-Cell concept. In order to perform necessary analysis, NO formation/destruction sub-model was implemented, within comprehensive combustion code, used to predict emission from the furnace. Thermal and fuel NO were modelled, as the most influential nitrogen oxides during pulverized coal combustion process. The computational code was developed to be easily used by engineering staff dealing with the process analysis in boiler units. Numerical simulations were performed for the boiler fired by the lignite Drmno, under different operating conditions. Contradictory requirements with respect to emission reduction and efficient combustion with safe operation of super-heaters often require boiler to operate within narrow limits of operation parameters, which is determined by means of the boiler thermal calculation.
PB  - Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd i Društvo termičara Srbije, Beograd
T2  - Termotehnika
T1  - Numerička optimizacija procesa u ložištu sa aspekata emisije NOx i efikasnosti energetskog kotla
T1  - Numerical optimisation of processes in the furnace considering NOx emission and efficiency of utility boiler
EP  - 74
IS  - 1-2
SP  - 61
VL  - 39
UR  - https://hdl.handle.net/21.15107/rcub_machinery_1636
ER  - 

@article{
author = "Tomanović, Ivan D. and Belošević, Srđan V. and Sijerčić, Miroslav and Beljanski, Vladimir and Tucaković, Dragan and Živanović, Titoslav and Nemoda, Stevan",
year = "2013",
abstract = "Razvijen je matematički model, namenjen za predviđanje procesa u energetskim parnim kotlovima TE Kostolac B tangencijalno loženim sprašenim lignitom. Model je primenjen za numeričku analizu rada kotla radi smanjenja emisije NOx, uz istovremeno održavanje visokog stepena korisnosti kotla. Kompleksni dvofazni tok gas-čestice modeliran je Ojler-Lagranževim pristupom. Povezivanje faza je ostvareno kuplovanjem pomoću PSI-Cell koncepta. Radi ostvarivanja željenih analiza, ugrađen je pod-model formiranja/destrukcije NO, unutar složenog koda za sagorevanje, koji se koristi za predviđanje emisije na izlazu iz ložišta. Modelirani su termički i gorivi NO, kao najuticajniji oksidi azota pri sagorevanju ugljenog praha. Proračunski program je razvijen radi lakše upotrebe od strane inženjerskog osoblja prilikom analiza procesa u kotlovskim postrojenjima. Numeričke simulacije su izvršene za različite radne uslove kotla, prilikom loženja lignitom sa kopa Drmno. Suprotstavljeni zahtevi a smanjenjem emisije i efikasnim sagorevanjem, sa osvrtom na bezbedan rad pregrejača pare često zahtevaju rad kotla u uskim granicama radnih parametara, koji su utvrđeni pomoću termičkog proračuna kotla., Mathematical model, aimed for prediction of processes in TE Kostolac B power plant utility boiler furnace tangentially fired by pulverized lignite, was developed in-house. The model was applied in numerical analysis of boiler operation, in order to reduce NOx emission by combustion modifications in the furnace, while maintaining high efficiency of the boiler unit. Complex two-phase gas-particle flow was modelled using Euler-Lagrange approach. Coupling between phases was done by using PSI-Cell concept. In order to perform necessary analysis, NO formation/destruction sub-model was implemented, within comprehensive combustion code, used to predict emission from the furnace. Thermal and fuel NO were modelled, as the most influential nitrogen oxides during pulverized coal combustion process. The computational code was developed to be easily used by engineering staff dealing with the process analysis in boiler units. Numerical simulations were performed for the boiler fired by the lignite Drmno, under different operating conditions. Contradictory requirements with respect to emission reduction and efficient combustion with safe operation of super-heaters often require boiler to operate within narrow limits of operation parameters, which is determined by means of the boiler thermal calculation.",
publisher = "Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd i Društvo termičara Srbije, Beograd",
journal = "Termotehnika",
title = "Numerička optimizacija procesa u ložištu sa aspekata emisije NOx i efikasnosti energetskog kotla, Numerical optimisation of processes in the furnace considering NOx emission and efficiency of utility boiler",
pages = "74-61",
number = "1-2",
volume = "39",
url = "https://hdl.handle.net/21.15107/rcub_machinery_1636"
}

Tomanović, I. D., Belošević, S. V., Sijerčić, M., Beljanski, V., Tucaković, D., Živanović, T.,& Nemoda, S.. (2013). Numerička optimizacija procesa u ložištu sa aspekata emisije NOx i efikasnosti energetskog kotla. in Termotehnika
Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd i Društvo termičara Srbije, Beograd., 39(1-2), 61-74.
https://hdl.handle.net/21.15107/rcub_machinery_1636

Tomanović ID, Belošević SV, Sijerčić M, Beljanski V, Tucaković D, Živanović T, Nemoda S. Numerička optimizacija procesa u ložištu sa aspekata emisije NOx i efikasnosti energetskog kotla. in Termotehnika. 2013;39(1-2):61-74.
https://hdl.handle.net/21.15107/rcub_machinery_1636 .

Tomanović, Ivan D., Belošević, Srđan V., Sijerčić, Miroslav, Beljanski, Vladimir, Tucaković, Dragan, Živanović, Titoslav, Nemoda, Stevan, "Numerička optimizacija procesa u ložištu sa aspekata emisije NOx i efikasnosti energetskog kotla" in Termotehnika, 39, no. 1-2 (2013):61-74,
https://hdl.handle.net/21.15107/rcub_machinery_1636 .

TY  - GEN
AU  - Živanović, Titoslav
AU  - Šijački Žeravčić, Vera
AU  - Tucaković, Dragan
AU  - Bakić, Gordana
PY  - 2013
UR  - https://enauka.gov.rs/handle/123456789/317441
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/5329
T1  - Kontrola izbora i kvaliteta opreme i projekata za blok 3 u TE Kostolac B
UR  - https://hdl.handle.net/21.15107/rcub_machinery_5329
ER  - 

@misc{
author = "Živanović, Titoslav and Šijački Žeravčić, Vera and Tucaković, Dragan and Bakić, Gordana",
year = "2013",
title = "Kontrola izbora i kvaliteta opreme i projekata za blok 3 u TE Kostolac B",
url = "https://hdl.handle.net/21.15107/rcub_machinery_5329"
}

Živanović, T., Šijački Žeravčić, V., Tucaković, D.,& Bakić, G.. (2013). Kontrola izbora i kvaliteta opreme i projekata za blok 3 u TE Kostolac B. .
https://hdl.handle.net/21.15107/rcub_machinery_5329

Živanović T, Šijački Žeravčić V, Tucaković D, Bakić G. Kontrola izbora i kvaliteta opreme i projekata za blok 3 u TE Kostolac B. 2013;.
https://hdl.handle.net/21.15107/rcub_machinery_5329 .

Živanović, Titoslav, Šijački Žeravčić, Vera, Tucaković, Dragan, Bakić, Gordana, "Kontrola izbora i kvaliteta opreme i projekata za blok 3 u TE Kostolac B" (2013),
https://hdl.handle.net/21.15107/rcub_machinery_5329 .

TY  - CONF
AU  - Stupar, Goran
AU  - Živanović, Titoslav
AU  - Tucaković, Dragan
AU  - Banjac, M.
PY  - 2013
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/1787
AB  - The paper shows a reconstruction of rotary regenerative air preheater in purpose of increase of it's energy efficiency. The increase of matrix heat capacity was examined with minimal modifications to geometry of heat exchanger surfaces. At the same time, the influence of lower air leakage through the seals on the efficiency of the plant was also tested. All research were performed for two fuel qualities. From a series of thermal and aerodynamic calculations, the optimal work conditions of rotary regenerator were chosen in terms of energy efficiency of the boiler plant. The shown results were verified by measurings executed at the plant after reconstruction.
PB  - China International Conference Center for Science and Technology
C3  - Proceedings of the 26th International Conference on Efficiency, Cost, Optimization, Simulation and E
T1  - Work optimization for rotary regenerative air preheater based on an increase of heat capacity of the matrix and reduction of leakage in seal clearances
UR  - https://hdl.handle.net/21.15107/rcub_machinery_1787
ER  - 

@conference{
author = "Stupar, Goran and Živanović, Titoslav and Tucaković, Dragan and Banjac, M.",
year = "2013",
abstract = "The paper shows a reconstruction of rotary regenerative air preheater in purpose of increase of it's energy efficiency. The increase of matrix heat capacity was examined with minimal modifications to geometry of heat exchanger surfaces. At the same time, the influence of lower air leakage through the seals on the efficiency of the plant was also tested. All research were performed for two fuel qualities. From a series of thermal and aerodynamic calculations, the optimal work conditions of rotary regenerator were chosen in terms of energy efficiency of the boiler plant. The shown results were verified by measurings executed at the plant after reconstruction.",
publisher = "China International Conference Center for Science and Technology",
journal = "Proceedings of the 26th International Conference on Efficiency, Cost, Optimization, Simulation and E",
title = "Work optimization for rotary regenerative air preheater based on an increase of heat capacity of the matrix and reduction of leakage in seal clearances",
url = "https://hdl.handle.net/21.15107/rcub_machinery_1787"
}

Stupar, G., Živanović, T., Tucaković, D.,& Banjac, M.. (2013). Work optimization for rotary regenerative air preheater based on an increase of heat capacity of the matrix and reduction of leakage in seal clearances. in Proceedings of the 26th International Conference on Efficiency, Cost, Optimization, Simulation and E
China International Conference Center for Science and Technology..
https://hdl.handle.net/21.15107/rcub_machinery_1787

Stupar G, Živanović T, Tucaković D, Banjac M. Work optimization for rotary regenerative air preheater based on an increase of heat capacity of the matrix and reduction of leakage in seal clearances. in Proceedings of the 26th International Conference on Efficiency, Cost, Optimization, Simulation and E. 2013;.
https://hdl.handle.net/21.15107/rcub_machinery_1787 .

Stupar, Goran, Živanović, Titoslav, Tucaković, Dragan, Banjac, M., "Work optimization for rotary regenerative air preheater based on an increase of heat capacity of the matrix and reduction of leakage in seal clearances" in Proceedings of the 26th International Conference on Efficiency, Cost, Optimization, Simulation and E (2013),
https://hdl.handle.net/21.15107/rcub_machinery_1787 .

TY  - JOUR
AU  - Tucaković, Dragan
AU  - Stupar, Goran
AU  - Živanović, Titoslav
AU  - Petrović, Milan
AU  - Belošević, Srđan V.
PY  - 2013
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/1682
AB  - Within the energy system in Methanol vinegar complex (MVC) in Kikinda, beside process boiler and auxiliary equipment, there are three equal steam boilers made by "Minel Kotlogradnja", provided for combustion of natural gas, fuel oil and process gases. Aiming to increase the MVC Kikinda energy plant capacity, one gas turbine of 14 MW or 17 MW is going to be installed. In regard to relatively high gas temperature and a large amount of the unused oxygen from the air in the exhaust gas, it is specified to split exhaust gas into the two equal streams and import them into the two existing steam boilers, each having production of 16.67 kg/s (60 t/h). In order to use the exhaust gas heat, as well as oxygen contained within, it is necessary to replace the existing burners and to reconstruct the heat exchangers in the steam boiler vertical convective pass. Besides, it is necessary to verify if the existing flue gases fan can comply with the new operating regime, during which a half of the turbine exhaust gas is imported into the steam boiler.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Applied Thermal Engineering
T1  - Possibilities for reconstruction of existing steam boilers for the purpose of using exhaust gases from 14 MW or 17 MW gas turbine
EP  - 90
IS  - 1-2
SP  - 83
VL  - 56
DO  - 10.1016/j.applthermaleng.2013.03.028
ER  - 

@article{
author = "Tucaković, Dragan and Stupar, Goran and Živanović, Titoslav and Petrović, Milan and Belošević, Srđan V.",
year = "2013",
abstract = "Within the energy system in Methanol vinegar complex (MVC) in Kikinda, beside process boiler and auxiliary equipment, there are three equal steam boilers made by "Minel Kotlogradnja", provided for combustion of natural gas, fuel oil and process gases. Aiming to increase the MVC Kikinda energy plant capacity, one gas turbine of 14 MW or 17 MW is going to be installed. In regard to relatively high gas temperature and a large amount of the unused oxygen from the air in the exhaust gas, it is specified to split exhaust gas into the two equal streams and import them into the two existing steam boilers, each having production of 16.67 kg/s (60 t/h). In order to use the exhaust gas heat, as well as oxygen contained within, it is necessary to replace the existing burners and to reconstruct the heat exchangers in the steam boiler vertical convective pass. Besides, it is necessary to verify if the existing flue gases fan can comply with the new operating regime, during which a half of the turbine exhaust gas is imported into the steam boiler.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Applied Thermal Engineering",
title = "Possibilities for reconstruction of existing steam boilers for the purpose of using exhaust gases from 14 MW or 17 MW gas turbine",
pages = "90-83",
number = "1-2",
volume = "56",
doi = "10.1016/j.applthermaleng.2013.03.028"
}

Tucaković, D., Stupar, G., Živanović, T., Petrović, M.,& Belošević, S. V.. (2013). Possibilities for reconstruction of existing steam boilers for the purpose of using exhaust gases from 14 MW or 17 MW gas turbine. in Applied Thermal Engineering
Pergamon-Elsevier Science Ltd, Oxford., 56(1-2), 83-90.
https://doi.org/10.1016/j.applthermaleng.2013.03.028

Tucaković D, Stupar G, Živanović T, Petrović M, Belošević SV. Possibilities for reconstruction of existing steam boilers for the purpose of using exhaust gases from 14 MW or 17 MW gas turbine. in Applied Thermal Engineering. 2013;56(1-2):83-90.
doi:10.1016/j.applthermaleng.2013.03.028 .

Tucaković, Dragan, Stupar, Goran, Živanović, Titoslav, Petrović, Milan, Belošević, Srđan V., "Possibilities for reconstruction of existing steam boilers for the purpose of using exhaust gases from 14 MW or 17 MW gas turbine" in Applied Thermal Engineering, 56, no. 1-2 (2013):83-90,
https://doi.org/10.1016/j.applthermaleng.2013.03.028 . .

TY  - JOUR
AU  - Crnomarković, Nenad
AU  - Sijerčić, Miroslav
AU  - Belošević, Srđan V.
AU  - Tucaković, Dragan
AU  - Živanović, Titoslav
PY  - 2013
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/1638
AB  - Ispitan je uticaj broja čestica letećeg pepela koje nastaju fragmentacijom jedne čestice koksnog ostatka na radijaciona svojstva disperzne faze plamena ugljenog praha, kao i da li se primenom tako dobijenih radijacionih svojstava disperzne faze može dobiti slaganje rezultata numeričkih istraživanja sa rezultatima merenja. Za uslove sagorevanja unutar ložišta bloka A2 TENT snage 210 MNJ, koncentracija čestica letećeg pepela i funkcija raspodele su određeni pod pretpostavkom da jedna čestica koksnog ostatka formira od jedne do pet čestica letećeg pepela. Radijaciona svojstva oblaka čestica letećeg pepela izračunata su metodom nepravilne difrakcije. Rezultati pokazuju da sa porastom broja čestica letećeg pepela koje nastaju od jedne čestice koksnog ostatka rastu vrednosti koeficijenata apsorpcije i rasipanja zračenja, ali opada njihov odnos. Vrednosti radijacionih svojstava upotrebljene su u diferencijalnom matematičkom modelu procesa unutar izabranog ložišta. Koeficijent apsorpcije gasne faze određen je modelom jednog sivog gasa i u svim ispitivanim slučajevima bio je konstantan. Istraživanje je pokazalo da porast koeficijenta apsorpcije disperzne faze dovodi do porasta temperature gasne faze i flukseva upadnog zračenja, kao i da se slaganje sa rezultatima merenja postiže za sve izračunate vrednosti radijacionih svojstava disperzne faze.
AB  - Influence of the number of particles that are formed by fragmentation of one char particle on radiative properties of the dispersed phase of the pulverized coal flame, as well as on the results of numerical investigation of the process have been investigated. For the combustion conditions inside the furnace of A2 TENT 210 MW thermal unit, concentration of the flyash particles and particle size distribution parameters have been determined under assumption that one char particle forms from one to five flyash particles. Radiative properties of the cloud of flyash particles have been determined using anomalous diffraction method. Results show that increase of the number of flyash particles leads to the increase of the absorption and scattering coefficients. The differential mathematical model has been formed, for the process inside the chosen furnace. The absorption coefficient of the gas phase has been obtained by application of the simple gray gas model, and its value has been kept constant in all examined cases. Results show that increase of the dispersed phase absorption Coefficient leads to the increase of the gas-phase temperature and incident radiative fluxes. Agreement with the results of measurement has been achieved for all values of the dispersed phase radiative properties.
PB  - Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd i Društvo termičara Srbije, Beograd
T2  - Termotehnika
T1  - Numeričko određivanje radijacionih svojstava plamena ugljenog praha
T1  - Numerical determination of the pulverized coal flame radiative properties
EP  - 36
IS  - 1-2
SP  - 27
VL  - 39
UR  - https://hdl.handle.net/21.15107/rcub_machinery_1638
ER  - 

@article{
author = "Crnomarković, Nenad and Sijerčić, Miroslav and Belošević, Srđan V. and Tucaković, Dragan and Živanović, Titoslav",
year = "2013",
abstract = "Ispitan je uticaj broja čestica letećeg pepela koje nastaju fragmentacijom jedne čestice koksnog ostatka na radijaciona svojstva disperzne faze plamena ugljenog praha, kao i da li se primenom tako dobijenih radijacionih svojstava disperzne faze može dobiti slaganje rezultata numeričkih istraživanja sa rezultatima merenja. Za uslove sagorevanja unutar ložišta bloka A2 TENT snage 210 MNJ, koncentracija čestica letećeg pepela i funkcija raspodele su određeni pod pretpostavkom da jedna čestica koksnog ostatka formira od jedne do pet čestica letećeg pepela. Radijaciona svojstva oblaka čestica letećeg pepela izračunata su metodom nepravilne difrakcije. Rezultati pokazuju da sa porastom broja čestica letećeg pepela koje nastaju od jedne čestice koksnog ostatka rastu vrednosti koeficijenata apsorpcije i rasipanja zračenja, ali opada njihov odnos. Vrednosti radijacionih svojstava upotrebljene su u diferencijalnom matematičkom modelu procesa unutar izabranog ložišta. Koeficijent apsorpcije gasne faze određen je modelom jednog sivog gasa i u svim ispitivanim slučajevima bio je konstantan. Istraživanje je pokazalo da porast koeficijenta apsorpcije disperzne faze dovodi do porasta temperature gasne faze i flukseva upadnog zračenja, kao i da se slaganje sa rezultatima merenja postiže za sve izračunate vrednosti radijacionih svojstava disperzne faze., Influence of the number of particles that are formed by fragmentation of one char particle on radiative properties of the dispersed phase of the pulverized coal flame, as well as on the results of numerical investigation of the process have been investigated. For the combustion conditions inside the furnace of A2 TENT 210 MW thermal unit, concentration of the flyash particles and particle size distribution parameters have been determined under assumption that one char particle forms from one to five flyash particles. Radiative properties of the cloud of flyash particles have been determined using anomalous diffraction method. Results show that increase of the number of flyash particles leads to the increase of the absorption and scattering coefficients. The differential mathematical model has been formed, for the process inside the chosen furnace. The absorption coefficient of the gas phase has been obtained by application of the simple gray gas model, and its value has been kept constant in all examined cases. Results show that increase of the dispersed phase absorption Coefficient leads to the increase of the gas-phase temperature and incident radiative fluxes. Agreement with the results of measurement has been achieved for all values of the dispersed phase radiative properties.",
publisher = "Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd i Društvo termičara Srbije, Beograd",
journal = "Termotehnika",
title = "Numeričko određivanje radijacionih svojstava plamena ugljenog praha, Numerical determination of the pulverized coal flame radiative properties",
pages = "36-27",
number = "1-2",
volume = "39",
url = "https://hdl.handle.net/21.15107/rcub_machinery_1638"
}

Crnomarković, N., Sijerčić, M., Belošević, S. V., Tucaković, D.,& Živanović, T.. (2013). Numeričko određivanje radijacionih svojstava plamena ugljenog praha. in Termotehnika
Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd i Društvo termičara Srbije, Beograd., 39(1-2), 27-36.
https://hdl.handle.net/21.15107/rcub_machinery_1638

Crnomarković N, Sijerčić M, Belošević SV, Tucaković D, Živanović T. Numeričko određivanje radijacionih svojstava plamena ugljenog praha. in Termotehnika. 2013;39(1-2):27-36.
https://hdl.handle.net/21.15107/rcub_machinery_1638 .

Crnomarković, Nenad, Sijerčić, Miroslav, Belošević, Srđan V., Tucaković, Dragan, Živanović, Titoslav, "Numeričko određivanje radijacionih svojstava plamena ugljenog praha" in Termotehnika, 39, no. 1-2 (2013):27-36,
https://hdl.handle.net/21.15107/rcub_machinery_1638 .

TY  - JOUR
AU  - Crnomarković, Nenad
AU  - Sijerčić, Miroslav
AU  - Belošević, Srđan V.
AU  - Tucaković, Dragan
AU  - Živanović, Titoslav
PY  - 2013
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/1651
AB  - Comparison of the numerical investigation results was carried out when the simple gray gas (SGG) and weighted sum of gray gases (WSGG) models are used to model the radiative properties of the gas phase inside the lignite fired furnaces. Comprehensive mathematical model of the tangentially fired furnace by pulverized lignite was made. Gas radiative properties were modeled by the SGG and WSGG models. Radiative heat transfer was modeled by the zonal model. Gas-phase variables and absorbed wall fluxes were compared on the basis of the relative differences that were determined for all control volumes and surface zones. Average relative differences of the gas-phase temperatures were about 1.0%. Average relative differences of the absorbed wall fluxes were from 2.0% to 5.0%. Absorbed wall fluxes determined by the SGG model were bigger than those determined by the WSGG model. Differences of the heat transfer rates of the absorbed radiation through the furnace walls were expressed in percents of heat transfer rates determined by the SGG model and were similar to the average relative differences of absorbed wall fluxes. Results justify application of the SGG model in comprehensive mathematical models of lignite-fired furnaces.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - International Journal of Heat and Mass Transfer
T1  - Numerical investigation of processes in the lignite-fired furnace when simple gray gas and weighted sum of gray gases models are used
EP  - 205
IS  - 1-2
SP  - 197
VL  - 56
DO  - 10.1016/j.ijheatmasstransfer.2012.09.024
ER  - 

@article{
author = "Crnomarković, Nenad and Sijerčić, Miroslav and Belošević, Srđan V. and Tucaković, Dragan and Živanović, Titoslav",
year = "2013",
abstract = "Comparison of the numerical investigation results was carried out when the simple gray gas (SGG) and weighted sum of gray gases (WSGG) models are used to model the radiative properties of the gas phase inside the lignite fired furnaces. Comprehensive mathematical model of the tangentially fired furnace by pulverized lignite was made. Gas radiative properties were modeled by the SGG and WSGG models. Radiative heat transfer was modeled by the zonal model. Gas-phase variables and absorbed wall fluxes were compared on the basis of the relative differences that were determined for all control volumes and surface zones. Average relative differences of the gas-phase temperatures were about 1.0%. Average relative differences of the absorbed wall fluxes were from 2.0% to 5.0%. Absorbed wall fluxes determined by the SGG model were bigger than those determined by the WSGG model. Differences of the heat transfer rates of the absorbed radiation through the furnace walls were expressed in percents of heat transfer rates determined by the SGG model and were similar to the average relative differences of absorbed wall fluxes. Results justify application of the SGG model in comprehensive mathematical models of lignite-fired furnaces.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "International Journal of Heat and Mass Transfer",
title = "Numerical investigation of processes in the lignite-fired furnace when simple gray gas and weighted sum of gray gases models are used",
pages = "205-197",
number = "1-2",
volume = "56",
doi = "10.1016/j.ijheatmasstransfer.2012.09.024"
}

Crnomarković, N., Sijerčić, M., Belošević, S. V., Tucaković, D.,& Živanović, T.. (2013). Numerical investigation of processes in the lignite-fired furnace when simple gray gas and weighted sum of gray gases models are used. in International Journal of Heat and Mass Transfer
Pergamon-Elsevier Science Ltd, Oxford., 56(1-2), 197-205.
https://doi.org/10.1016/j.ijheatmasstransfer.2012.09.024

Crnomarković N, Sijerčić M, Belošević SV, Tucaković D, Živanović T. Numerical investigation of processes in the lignite-fired furnace when simple gray gas and weighted sum of gray gases models are used. in International Journal of Heat and Mass Transfer. 2013;56(1-2):197-205.
doi:10.1016/j.ijheatmasstransfer.2012.09.024 .

Crnomarković, Nenad, Sijerčić, Miroslav, Belošević, Srđan V., Tucaković, Dragan, Živanović, Titoslav, "Numerical investigation of processes in the lignite-fired furnace when simple gray gas and weighted sum of gray gases models are used" in International Journal of Heat and Mass Transfer, 56, no. 1-2 (2013):197-205,
https://doi.org/10.1016/j.ijheatmasstransfer.2012.09.024 . .

TY  - JOUR
AU  - Belošević, Srđan V.
AU  - Beljanski, Vladimir
AU  - Tomanović, Ivan
AU  - Crnomarković, Nenad
AU  - Tucaković, Dragan
AU  - Živanović, Titoslav
PY  - 2012
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/1363
AB  - Considerable research efforts focus on modeling NOx formation/destruction and predicting NOx emission so that it can be controlled. A motivation for this numerical study was to examine the efficiency of combustion modifications in the furnaces of Kostolac B 350 MWe boiler units, tangentially fired by pulverized lignite. Numerical analysis was done by an in-house developed NOx submodel, coupled with differential comprehensive combustion model, previously developed and validated. The NOx submodel focuses on homogeneous reactions of both the fuel and the thermal NO formation/destruction processes. The submodel was validated by comparison of predicted NOx emissions with available measurements at the boiler units. Selected predictions of the emission, the furnace exit gas temperature, NO concentration, gas temperature, and velocity field are given for the case-study furnace under different operating conditions. The individual or combined effects of coal and preheated air distribution over the individual burners and the burner tiers, the grinding fineness and quality of coal, and the cold air ingress were investigated. Reduced emissions of up to 20-30% can be achieved only by proper organization of the combustion process. Obtained results were verified by the boiler thermal calculations. An optimal range of the furnace exit gas temperatures was proposed, with respect to the safe operation of the steam superheater. Simulations by means of a computer code developed for the purpose, showed that the air staging using overfire air ports might provide the NOx emission reduction of up to 24% in the test-cases with relatively high emission and up to 7% of additional reduction in already optimized cases.
PB  - Amer Chemical Soc, Washington
T2  - Energy & Fuels
T1  - Numerical Analysis of NOx Control by Combustion Modifications in Pulverized Coal Utility Boiler
EP  - 442
IS  - 1
SP  - 425
VL  - 26
DO  - 10.1021/ef201380z
ER  - 

@article{
author = "Belošević, Srđan V. and Beljanski, Vladimir and Tomanović, Ivan and Crnomarković, Nenad and Tucaković, Dragan and Živanović, Titoslav",
year = "2012",
abstract = "Considerable research efforts focus on modeling NOx formation/destruction and predicting NOx emission so that it can be controlled. A motivation for this numerical study was to examine the efficiency of combustion modifications in the furnaces of Kostolac B 350 MWe boiler units, tangentially fired by pulverized lignite. Numerical analysis was done by an in-house developed NOx submodel, coupled with differential comprehensive combustion model, previously developed and validated. The NOx submodel focuses on homogeneous reactions of both the fuel and the thermal NO formation/destruction processes. The submodel was validated by comparison of predicted NOx emissions with available measurements at the boiler units. Selected predictions of the emission, the furnace exit gas temperature, NO concentration, gas temperature, and velocity field are given for the case-study furnace under different operating conditions. The individual or combined effects of coal and preheated air distribution over the individual burners and the burner tiers, the grinding fineness and quality of coal, and the cold air ingress were investigated. Reduced emissions of up to 20-30% can be achieved only by proper organization of the combustion process. Obtained results were verified by the boiler thermal calculations. An optimal range of the furnace exit gas temperatures was proposed, with respect to the safe operation of the steam superheater. Simulations by means of a computer code developed for the purpose, showed that the air staging using overfire air ports might provide the NOx emission reduction of up to 24% in the test-cases with relatively high emission and up to 7% of additional reduction in already optimized cases.",
publisher = "Amer Chemical Soc, Washington",
journal = "Energy & Fuels",
title = "Numerical Analysis of NOx Control by Combustion Modifications in Pulverized Coal Utility Boiler",
pages = "442-425",
number = "1",
volume = "26",
doi = "10.1021/ef201380z"
}

Belošević, S. V., Beljanski, V., Tomanović, I., Crnomarković, N., Tucaković, D.,& Živanović, T.. (2012). Numerical Analysis of NOx Control by Combustion Modifications in Pulverized Coal Utility Boiler. in Energy & Fuels
Amer Chemical Soc, Washington., 26(1), 425-442.
https://doi.org/10.1021/ef201380z

Belošević SV, Beljanski V, Tomanović I, Crnomarković N, Tucaković D, Živanović T. Numerical Analysis of NOx Control by Combustion Modifications in Pulverized Coal Utility Boiler. in Energy & Fuels. 2012;26(1):425-442.
doi:10.1021/ef201380z .

Belošević, Srđan V., Beljanski, Vladimir, Tomanović, Ivan, Crnomarković, Nenad, Tucaković, Dragan, Živanović, Titoslav, "Numerical Analysis of NOx Control by Combustion Modifications in Pulverized Coal Utility Boiler" in Energy & Fuels, 26, no. 1 (2012):425-442,
https://doi.org/10.1021/ef201380z . .

TY  - CONF
AU  - Stupar, Goran
AU  - Tucaković, Dragan
AU  - Živanović, Titoslav
AU  - Banjac, M.
AU  - Belošević, Srđan V.
AU  - Beljanski, Vladimir
AU  - Tomanović, Ivan
AU  - Crnomarković, Nenad
AU  - Sijerčić, Miroslav
PY  - 2012
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/1533
AB  - Within Electric Power Utility of Serbia 1991. a thermal power plant "Kostolac B", power 2x350 MW started. Given the increased emissions of NOx in combustion products, it is in consideration to reduce it by introducing primary measures in terms of burner reconstruction, redistribution of secondary air by furnace height and introduction of cold flue gas recirculation. Applying these measures directly affects not only the combustion process in the furnace but also the work efficiency of steam boiler. Namely, if the flue gas temperature in furnace outlet is lowered below the corresponding values, it will cause the superheater and reheater not to achieve the designed steam parameters. On the other hand, the use of cold recirculating flue gases has a beneficial effect on reducing NOx and increases the work safety of the superheaters and reheaters, but reduces the steam boiler efficiency. In order to understand all these effects on the safety and efficiency of boiler operation, it was needed to create a software for thermal calculation of the observed steam boiler. Based on that software, this paper will display the impacts of introducing the measures for reduction of NOx emissions on a safe and efficient operation of the steam boiler as a whole.
PB  - Aabo Akademi University
C3  - Proceedings of the 25th International Conference on Efficiency, Cost, Optimization and Simulation of
T1  - The influence of primary measures for reducing NOx emissions on energy steam boiler efficiency
EP  - 205
SP  - 193
VL  - 8
UR  - https://hdl.handle.net/21.15107/rcub_machinery_1533
ER  - 

@conference{
author = "Stupar, Goran and Tucaković, Dragan and Živanović, Titoslav and Banjac, M. and Belošević, Srđan V. and Beljanski, Vladimir and Tomanović, Ivan and Crnomarković, Nenad and Sijerčić, Miroslav",
year = "2012",
abstract = "Within Electric Power Utility of Serbia 1991. a thermal power plant "Kostolac B", power 2x350 MW started. Given the increased emissions of NOx in combustion products, it is in consideration to reduce it by introducing primary measures in terms of burner reconstruction, redistribution of secondary air by furnace height and introduction of cold flue gas recirculation. Applying these measures directly affects not only the combustion process in the furnace but also the work efficiency of steam boiler. Namely, if the flue gas temperature in furnace outlet is lowered below the corresponding values, it will cause the superheater and reheater not to achieve the designed steam parameters. On the other hand, the use of cold recirculating flue gases has a beneficial effect on reducing NOx and increases the work safety of the superheaters and reheaters, but reduces the steam boiler efficiency. In order to understand all these effects on the safety and efficiency of boiler operation, it was needed to create a software for thermal calculation of the observed steam boiler. Based on that software, this paper will display the impacts of introducing the measures for reduction of NOx emissions on a safe and efficient operation of the steam boiler as a whole.",
publisher = "Aabo Akademi University",
journal = "Proceedings of the 25th International Conference on Efficiency, Cost, Optimization and Simulation of",
title = "The influence of primary measures for reducing NOx emissions on energy steam boiler efficiency",
pages = "205-193",
volume = "8",
url = "https://hdl.handle.net/21.15107/rcub_machinery_1533"
}

Stupar, G., Tucaković, D., Živanović, T., Banjac, M., Belošević, S. V., Beljanski, V., Tomanović, I., Crnomarković, N.,& Sijerčić, M.. (2012). The influence of primary measures for reducing NOx emissions on energy steam boiler efficiency. in Proceedings of the 25th International Conference on Efficiency, Cost, Optimization and Simulation of
Aabo Akademi University., 8, 193-205.
https://hdl.handle.net/21.15107/rcub_machinery_1533

Stupar G, Tucaković D, Živanović T, Banjac M, Belošević SV, Beljanski V, Tomanović I, Crnomarković N, Sijerčić M. The influence of primary measures for reducing NOx emissions on energy steam boiler efficiency. in Proceedings of the 25th International Conference on Efficiency, Cost, Optimization and Simulation of. 2012;8:193-205.
https://hdl.handle.net/21.15107/rcub_machinery_1533 .

Stupar, Goran, Tucaković, Dragan, Živanović, Titoslav, Banjac, M., Belošević, Srđan V., Beljanski, Vladimir, Tomanović, Ivan, Crnomarković, Nenad, Sijerčić, Miroslav, "The influence of primary measures for reducing NOx emissions on energy steam boiler efficiency" in Proceedings of the 25th International Conference on Efficiency, Cost, Optimization and Simulation of, 8 (2012):193-205,
https://hdl.handle.net/21.15107/rcub_machinery_1533 .

TY  - JOUR
AU  - Stupar, Goran
AU  - Živanović, Titoslav
AU  - Tucaković, Dragan
AU  - Banjac, Miloš
PY  - 2012
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/1590
AB  - U okviru Elektroprivrede Srbije 1991. godine puštena je u rad Termoelektrana 'Kostolac B' snage 2 × 350 MW. Na osnovu dosadašnjih ispitivanja cevnog sistema parnog kotla utvrđeno je da se on nalazi u 'lošem' stanju. Njegovi najugroženiji delovi su isparivačke grejne površine. S obzirom da postoje oblasti u isparivaču koje su se češće oštećivale, zbog čega je parni kotao ispadao iz pogona, neophodno je utvrditi razloge zbog kojih je dolazilo do tih oštećenja. Da bi se locirala ugrožena područja isparivača, sproveden je detaljan hidraulički proračun. Takođe je izvršen termički proračun parnog kotla u celini, s obzirom da se isparivač nalazi i u zoni konvektivnih grejnih površina. Utvrđivanjem najugroženije lokacije isparivača - horizontalni deo nosećih cevi, omogućeno je da se pri kapitalnom remontu izvrše određene rekonstrukcije u smislu promene njihovog ugla nagiba, što bi u krajnjem obezbedilo sigurniji rad, kako isparivača tako i kotla u celini.
AB  - Within Electric Power Utility of Serbia 1991, a thermal power plant 'Kostolac B', power 2 × 350 MW, started. Based on the examination of steam boiler pipe system, it is confirmed that it is in a 'bad' shape. Its most jeopardized parts are evaporating heating surfaces. Considering that there are areas within the evaporator that suffered more damage, wherefore the steam boiler is out of production, it is necessary to settle the reasons for those damages. In order to locate the jeopardized areas of the evaporator, we carried out a detailed hydraulic calculation. A thermal calculation of steam boiler was also carried out, considering that the evaporator is also located in the convective heating surfaces part. By settling the most jeopardized evaporator locations - a horizontal part of support tubes, it was enabled to make certain reconstructions during the capital repair, in regard of changing their inclination angle, which would provide safer work of the evaporator, and steam boiler as a whole.
PB  - Univerzitet u Beogradu - Mašinski fakultet, Beograd
T2  - FME Transactions
T1  - Provera sigurnosti rada isparivača energetskog parnog kotla u TE 'Kostolac B'
T1  - Work verification of the energy steam boiler evaporator in the Power plant 'Kostolac B'
EP  - 36
IS  - 1
SP  - 31
VL  - 40
UR  - https://hdl.handle.net/21.15107/rcub_machinery_1590
ER  - 

@article{
author = "Stupar, Goran and Živanović, Titoslav and Tucaković, Dragan and Banjac, Miloš",
year = "2012",
abstract = "U okviru Elektroprivrede Srbije 1991. godine puštena je u rad Termoelektrana 'Kostolac B' snage 2 × 350 MW. Na osnovu dosadašnjih ispitivanja cevnog sistema parnog kotla utvrđeno je da se on nalazi u 'lošem' stanju. Njegovi najugroženiji delovi su isparivačke grejne površine. S obzirom da postoje oblasti u isparivaču koje su se češće oštećivale, zbog čega je parni kotao ispadao iz pogona, neophodno je utvrditi razloge zbog kojih je dolazilo do tih oštećenja. Da bi se locirala ugrožena područja isparivača, sproveden je detaljan hidraulički proračun. Takođe je izvršen termički proračun parnog kotla u celini, s obzirom da se isparivač nalazi i u zoni konvektivnih grejnih površina. Utvrđivanjem najugroženije lokacije isparivača - horizontalni deo nosećih cevi, omogućeno je da se pri kapitalnom remontu izvrše određene rekonstrukcije u smislu promene njihovog ugla nagiba, što bi u krajnjem obezbedilo sigurniji rad, kako isparivača tako i kotla u celini., Within Electric Power Utility of Serbia 1991, a thermal power plant 'Kostolac B', power 2 × 350 MW, started. Based on the examination of steam boiler pipe system, it is confirmed that it is in a 'bad' shape. Its most jeopardized parts are evaporating heating surfaces. Considering that there are areas within the evaporator that suffered more damage, wherefore the steam boiler is out of production, it is necessary to settle the reasons for those damages. In order to locate the jeopardized areas of the evaporator, we carried out a detailed hydraulic calculation. A thermal calculation of steam boiler was also carried out, considering that the evaporator is also located in the convective heating surfaces part. By settling the most jeopardized evaporator locations - a horizontal part of support tubes, it was enabled to make certain reconstructions during the capital repair, in regard of changing their inclination angle, which would provide safer work of the evaporator, and steam boiler as a whole.",
publisher = "Univerzitet u Beogradu - Mašinski fakultet, Beograd",
journal = "FME Transactions",
title = "Provera sigurnosti rada isparivača energetskog parnog kotla u TE 'Kostolac B', Work verification of the energy steam boiler evaporator in the Power plant 'Kostolac B'",
pages = "36-31",
number = "1",
volume = "40",
url = "https://hdl.handle.net/21.15107/rcub_machinery_1590"
}

Stupar, G., Živanović, T., Tucaković, D.,& Banjac, M.. (2012). Provera sigurnosti rada isparivača energetskog parnog kotla u TE 'Kostolac B'. in FME Transactions
Univerzitet u Beogradu - Mašinski fakultet, Beograd., 40(1), 31-36.
https://hdl.handle.net/21.15107/rcub_machinery_1590

Stupar G, Živanović T, Tucaković D, Banjac M. Provera sigurnosti rada isparivača energetskog parnog kotla u TE 'Kostolac B'. in FME Transactions. 2012;40(1):31-36.
https://hdl.handle.net/21.15107/rcub_machinery_1590 .

Stupar, Goran, Živanović, Titoslav, Tucaković, Dragan, Banjac, Miloš, "Provera sigurnosti rada isparivača energetskog parnog kotla u TE 'Kostolac B'" in FME Transactions, 40, no. 1 (2012):31-36,
https://hdl.handle.net/21.15107/rcub_machinery_1590 .

TY  - JOUR
AU  - Crnomarković, Nenad
AU  - Sijerčić, Miroslav
AU  - Belošević, Srđan V.
AU  - Stanković, Branislav
AU  - Tucaković, Dragan
AU  - Živanović, Titoslav
PY  - 2012
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/1510
AB  - A possibility of simplification of the scattering phase function of a pulverized coal flame was analyzed in the paper. It was showed that the type of radiation scattering of a pulverized coal flame is between two limiting cases: isotropic and forward scattering. A comprehensive mathematical model of a tangentially fired furnace by pulverized coal was formed. Radiative heat transfer was modeled using the six-flux model. Grid independent results of the numerical simulations were obtained. The mathematical model was verified by comparison of the results of numerical simulations with results of measurements. The influence of the type of radiation scattering on results of numerical simulation was analyzed through the relative and average differences of the gas-phase temperatures, the total radiation fluxes, and the absorbed wall fluxes of the left furnace wall. The investigation showed that the total radiation fluxes were considerably influenced by the type of radiation scattering. On the other hand, the gas-phase temperatures and the absorbed wall fluxes were much less influenced by the type of radiation scattering. The results justify the use of the scattering phase function corresponding to isotropic scattering in radiation models of comprehensive mathematical models of pulverized coal fired furnaces.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Energy
T1  - Influence of forward scattering on prediction of temperature and radiation fields inside the pulverized coal furnace
EP  - 168
IS  - 1
SP  - 160
VL  - 45
DO  - 10.1016/j.energy.2012.01.019
ER  - 

@article{
author = "Crnomarković, Nenad and Sijerčić, Miroslav and Belošević, Srđan V. and Stanković, Branislav and Tucaković, Dragan and Živanović, Titoslav",
year = "2012",
abstract = "A possibility of simplification of the scattering phase function of a pulverized coal flame was analyzed in the paper. It was showed that the type of radiation scattering of a pulverized coal flame is between two limiting cases: isotropic and forward scattering. A comprehensive mathematical model of a tangentially fired furnace by pulverized coal was formed. Radiative heat transfer was modeled using the six-flux model. Grid independent results of the numerical simulations were obtained. The mathematical model was verified by comparison of the results of numerical simulations with results of measurements. The influence of the type of radiation scattering on results of numerical simulation was analyzed through the relative and average differences of the gas-phase temperatures, the total radiation fluxes, and the absorbed wall fluxes of the left furnace wall. The investigation showed that the total radiation fluxes were considerably influenced by the type of radiation scattering. On the other hand, the gas-phase temperatures and the absorbed wall fluxes were much less influenced by the type of radiation scattering. The results justify the use of the scattering phase function corresponding to isotropic scattering in radiation models of comprehensive mathematical models of pulverized coal fired furnaces.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Energy",
title = "Influence of forward scattering on prediction of temperature and radiation fields inside the pulverized coal furnace",
pages = "168-160",
number = "1",
volume = "45",
doi = "10.1016/j.energy.2012.01.019"
}

Crnomarković, N., Sijerčić, M., Belošević, S. V., Stanković, B., Tucaković, D.,& Živanović, T.. (2012). Influence of forward scattering on prediction of temperature and radiation fields inside the pulverized coal furnace. in Energy
Pergamon-Elsevier Science Ltd, Oxford., 45(1), 160-168.
https://doi.org/10.1016/j.energy.2012.01.019

Crnomarković N, Sijerčić M, Belošević SV, Stanković B, Tucaković D, Živanović T. Influence of forward scattering on prediction of temperature and radiation fields inside the pulverized coal furnace. in Energy. 2012;45(1):160-168.
doi:10.1016/j.energy.2012.01.019 .

Crnomarković, Nenad, Sijerčić, Miroslav, Belošević, Srđan V., Stanković, Branislav, Tucaković, Dragan, Živanović, Titoslav, "Influence of forward scattering on prediction of temperature and radiation fields inside the pulverized coal furnace" in Energy, 45, no. 1 (2012):160-168,
https://doi.org/10.1016/j.energy.2012.01.019 . .

TY  - JOUR
AU  - Crnomarković, Nenad
AU  - Sijerčić, Miroslav
AU  - Belošević, Srđan V.
AU  - Tucaković, Dragan
AU  - Živanović, Titoslav
PY  - 2012
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/1431
AB  - Difference of results of numerical simulation of pulverized coal fired furnace when mathematical models contain various radiation models has been described in the paper. Two sets of numerical simulations of pulverized coal fired furnace of 210 MWe power boiler have been performed. One numerical simulation has contained Hottel’s zonal model, whereas the other numerical simulation has contained six-flux model. Other details of numerical simulations have been identical. The influence of radiation models has been examined through comparison of selected variables (gas-phase temperature, oxygen concentration, and absorbed radiative heat rate of surface zones of rear and right furnace walls), selected global parameters of furnace operation (total absorbed heat rate by all furnace walls and furnace exit gas-phase temperature). Computation time has been compared as well. Spatially distributed variables have been compared through maximal local differences and mean differences. Maximal local difference of gas-phase temperature has been 8.44%. Maximal local difference of absorbed radiative heat rate of the surface zones has been almost 80.0%. Difference of global parameters of furnace operation has been expressed in percents of value obtained by mathematical model containing Hottel’s zonal model and has not been bigger than 7.0%. Computation time for calculation of 1000 iterations has been approximately the same. Comparison with other radiation models is necessary for assessment of differences.
PB  - Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd
T2  - Thermal Science
T1  - Influence of application of Hottel's zonal model and six-flux model of thermal radiation on numerical simulations results of pulverized coal fired furnace
EP  - 282
IS  - 1
SP  - 271
VL  - 16
DO  - 10.2298/TSCI110627126C
ER  - 

@article{
author = "Crnomarković, Nenad and Sijerčić, Miroslav and Belošević, Srđan V. and Tucaković, Dragan and Živanović, Titoslav",
year = "2012",
abstract = "Difference of results of numerical simulation of pulverized coal fired furnace when mathematical models contain various radiation models has been described in the paper. Two sets of numerical simulations of pulverized coal fired furnace of 210 MWe power boiler have been performed. One numerical simulation has contained Hottel’s zonal model, whereas the other numerical simulation has contained six-flux model. Other details of numerical simulations have been identical. The influence of radiation models has been examined through comparison of selected variables (gas-phase temperature, oxygen concentration, and absorbed radiative heat rate of surface zones of rear and right furnace walls), selected global parameters of furnace operation (total absorbed heat rate by all furnace walls and furnace exit gas-phase temperature). Computation time has been compared as well. Spatially distributed variables have been compared through maximal local differences and mean differences. Maximal local difference of gas-phase temperature has been 8.44%. Maximal local difference of absorbed radiative heat rate of the surface zones has been almost 80.0%. Difference of global parameters of furnace operation has been expressed in percents of value obtained by mathematical model containing Hottel’s zonal model and has not been bigger than 7.0%. Computation time for calculation of 1000 iterations has been approximately the same. Comparison with other radiation models is necessary for assessment of differences.",
publisher = "Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd",
journal = "Thermal Science",
title = "Influence of application of Hottel's zonal model and six-flux model of thermal radiation on numerical simulations results of pulverized coal fired furnace",
pages = "282-271",
number = "1",
volume = "16",
doi = "10.2298/TSCI110627126C"
}

Crnomarković, N., Sijerčić, M., Belošević, S. V., Tucaković, D.,& Živanović, T.. (2012). Influence of application of Hottel's zonal model and six-flux model of thermal radiation on numerical simulations results of pulverized coal fired furnace. in Thermal Science
Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd., 16(1), 271-282.
https://doi.org/10.2298/TSCI110627126C

Crnomarković N, Sijerčić M, Belošević SV, Tucaković D, Živanović T. Influence of application of Hottel's zonal model and six-flux model of thermal radiation on numerical simulations results of pulverized coal fired furnace. in Thermal Science. 2012;16(1):271-282.
doi:10.2298/TSCI110627126C .

Crnomarković, Nenad, Sijerčić, Miroslav, Belošević, Srđan V., Tucaković, Dragan, Živanović, Titoslav, "Influence of application of Hottel's zonal model and six-flux model of thermal radiation on numerical simulations results of pulverized coal fired furnace" in Thermal Science, 16, no. 1 (2012):271-282,
https://doi.org/10.2298/TSCI110627126C . .

TY  - CONF
AU  - Tucaković, Dragan
AU  - Živanović, Titoslav
AU  - Stupar, Goran
AU  - Belošević, Srđan V.
AU  - Cvetković, M.
AU  - Zivanović, V.
PY  - 2011
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/1298
AB  - Within Electric Power Utility of Serbia 1991. a thermal power plant "Kostolac B", power 2x350 MW started. Based on the examination of steam boiler pipe system, it is confirmed that it is in "bad" shape. It's most jeopardized parts are evaporating heating surfaces. Considering that there are areas within the evaporator that suffered more damage, wherefore the steam boiler is out of production, it is necessary to settle the reasons for those damages. In order to locate jeopardized areas of the evaporator, we carried out a detailed hydraulic calculation. A thermal calculation of steam boiler was also carried out, considering that the evaporator is also located in the convective heating surfaces part. By settling the most jeopardized evaporator locations it was enabled to make certain reconstructions during the capital repair, which would provide more safer work of the evaporator, and steam boiler as a whole.
PB  - Nis University
C3  - Proceedings of the 24th International Conference on Efficiency, Cost, Optimization, Simulation and E
T1  - Work analysis of the energy steam boiler evaporator with sliding pressure of 350 MW block
EP  - 821
SP  - 814
UR  - https://hdl.handle.net/21.15107/rcub_machinery_1298
ER  - 

@conference{
author = "Tucaković, Dragan and Živanović, Titoslav and Stupar, Goran and Belošević, Srđan V. and Cvetković, M. and Zivanović, V.",
year = "2011",
abstract = "Within Electric Power Utility of Serbia 1991. a thermal power plant "Kostolac B", power 2x350 MW started. Based on the examination of steam boiler pipe system, it is confirmed that it is in "bad" shape. It's most jeopardized parts are evaporating heating surfaces. Considering that there are areas within the evaporator that suffered more damage, wherefore the steam boiler is out of production, it is necessary to settle the reasons for those damages. In order to locate jeopardized areas of the evaporator, we carried out a detailed hydraulic calculation. A thermal calculation of steam boiler was also carried out, considering that the evaporator is also located in the convective heating surfaces part. By settling the most jeopardized evaporator locations it was enabled to make certain reconstructions during the capital repair, which would provide more safer work of the evaporator, and steam boiler as a whole.",
publisher = "Nis University",
journal = "Proceedings of the 24th International Conference on Efficiency, Cost, Optimization, Simulation and E",
title = "Work analysis of the energy steam boiler evaporator with sliding pressure of 350 MW block",
pages = "821-814",
url = "https://hdl.handle.net/21.15107/rcub_machinery_1298"
}

Tucaković, D., Živanović, T., Stupar, G., Belošević, S. V., Cvetković, M.,& Zivanović, V.. (2011). Work analysis of the energy steam boiler evaporator with sliding pressure of 350 MW block. in Proceedings of the 24th International Conference on Efficiency, Cost, Optimization, Simulation and E
Nis University., 814-821.
https://hdl.handle.net/21.15107/rcub_machinery_1298

Tucaković D, Živanović T, Stupar G, Belošević SV, Cvetković M, Zivanović V. Work analysis of the energy steam boiler evaporator with sliding pressure of 350 MW block. in Proceedings of the 24th International Conference on Efficiency, Cost, Optimization, Simulation and E. 2011;:814-821.
https://hdl.handle.net/21.15107/rcub_machinery_1298 .

Tucaković, Dragan, Živanović, Titoslav, Stupar, Goran, Belošević, Srđan V., Cvetković, M., Zivanović, V., "Work analysis of the energy steam boiler evaporator with sliding pressure of 350 MW block" in Proceedings of the 24th International Conference on Efficiency, Cost, Optimization, Simulation and E (2011):814-821,
https://hdl.handle.net/21.15107/rcub_machinery_1298 .

TY  - CONF
AU  - Stupar, Goran
AU  - Tucaković, Dragan
AU  - Živanović, Titoslav
AU  - Ivanović, V.
AU  - Zivanović, V.
AU  - Komarov, Dragan
PY  - 2011
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/1291
AB  - This paper shows the computer simulation of two-phase flow of the mill gases, the solid particles of monodisperse coal dust and the transport fluid. Numeric simulation was performed with the software pack Fluent 6.3.26, application of the internal method DPM (Discrete Phase Models) which is based on the Lagrange approach. The standard k-ε model was used for gas phase turbulence modeling.The simulation was done for smooth, rectangular 90 o bend of inclined mill gas duct, located behind the classifier, for fan mill N 80.75 in block 1 of the thermal power plant "Kostolac A" (Serbia), with the aim of determining the pulverized coal distribution on duct cross section before entering the jet burner. Obtained results show the transport fluid velocity, the pulverized coal velocity and the particle trajectories within the flow channel. The simulation covers the flow of monodisperse particles with diameters ds = 50 μm, ds = 100 μm, ds = 600 μm and ds = 1000 μm, and their mixture. The results of this work were verified against experimental results available in the literature. Mill gas classifier in the TPP "Kostolac A" was reconstructed based on the analysis of numerical results.
PB  - Nis University
C3  - Proceedings of the 24th International Conference on Efficiency, Cost, Optimization, Simulation and E
T1  - 3-D model of solid and gas phase flow in the duct bend behind the mill gas classifier at the fan mill
EP  - 797
SP  - 786
UR  - https://hdl.handle.net/21.15107/rcub_machinery_1291
ER  - 

@conference{
author = "Stupar, Goran and Tucaković, Dragan and Živanović, Titoslav and Ivanović, V. and Zivanović, V. and Komarov, Dragan",
year = "2011",
abstract = "This paper shows the computer simulation of two-phase flow of the mill gases, the solid particles of monodisperse coal dust and the transport fluid. Numeric simulation was performed with the software pack Fluent 6.3.26, application of the internal method DPM (Discrete Phase Models) which is based on the Lagrange approach. The standard k-ε model was used for gas phase turbulence modeling.The simulation was done for smooth, rectangular 90 o bend of inclined mill gas duct, located behind the classifier, for fan mill N 80.75 in block 1 of the thermal power plant "Kostolac A" (Serbia), with the aim of determining the pulverized coal distribution on duct cross section before entering the jet burner. Obtained results show the transport fluid velocity, the pulverized coal velocity and the particle trajectories within the flow channel. The simulation covers the flow of monodisperse particles with diameters ds = 50 μm, ds = 100 μm, ds = 600 μm and ds = 1000 μm, and their mixture. The results of this work were verified against experimental results available in the literature. Mill gas classifier in the TPP "Kostolac A" was reconstructed based on the analysis of numerical results.",
publisher = "Nis University",
journal = "Proceedings of the 24th International Conference on Efficiency, Cost, Optimization, Simulation and E",
title = "3-D model of solid and gas phase flow in the duct bend behind the mill gas classifier at the fan mill",
pages = "797-786",
url = "https://hdl.handle.net/21.15107/rcub_machinery_1291"
}

Stupar, G., Tucaković, D., Živanović, T., Ivanović, V., Zivanović, V.,& Komarov, D.. (2011). 3-D model of solid and gas phase flow in the duct bend behind the mill gas classifier at the fan mill. in Proceedings of the 24th International Conference on Efficiency, Cost, Optimization, Simulation and E
Nis University., 786-797.
https://hdl.handle.net/21.15107/rcub_machinery_1291

Stupar G, Tucaković D, Živanović T, Ivanović V, Zivanović V, Komarov D. 3-D model of solid and gas phase flow in the duct bend behind the mill gas classifier at the fan mill. in Proceedings of the 24th International Conference on Efficiency, Cost, Optimization, Simulation and E. 2011;:786-797.
https://hdl.handle.net/21.15107/rcub_machinery_1291 .

Stupar, Goran, Tucaković, Dragan, Živanović, Titoslav, Ivanović, V., Zivanović, V., Komarov, Dragan, "3-D model of solid and gas phase flow in the duct bend behind the mill gas classifier at the fan mill" in Proceedings of the 24th International Conference on Efficiency, Cost, Optimization, Simulation and E (2011):786-797,
https://hdl.handle.net/21.15107/rcub_machinery_1291 .

TY  - JOUR
AU  - Ivanović, Vladan B.
AU  - Živanović, Titoslav
AU  - Tucaković, Dragan
AU  - Stupar, Goran
PY  - 2011
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/1191
AB  - After the last revitalization of thermal power block of 100 MW in TPP 'Kostolac A', made in the year 2004, during the operation of the plant, pulverized coal deposition often occurred in horizontal sections of the aero-mixture channels. Deposition phenomenon manifested itself in places ahead of spherical compensators in the direction of flow of pulverized coal to the burners, due to unfavorable configuration of these channels. Coal dust deposited in the channels dried and spontaneously combusted, causing numerous damage to channels and its isolation as well as the frequent stoppage of the operation for necessary interventions. The paper presents the original solution of reconstruction of aero-mixture channels which prevented deposition of coal dust and its eventual ignition. In this way the reliability of the mill plant is maximized and higher availability of boiler and block as a whole is achieved.
PB  - Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd
T2  - Thermal Science
T1  - Reconstruction of the aero-mixture channels of the pulverized coal plant of the 100 MW power plant unit
EP  - 676
IS  - 3
SP  - 663
VL  - 15
DO  - 10.2298/TSCI100412013I
ER  - 

@article{
author = "Ivanović, Vladan B. and Živanović, Titoslav and Tucaković, Dragan and Stupar, Goran",
year = "2011",
abstract = "After the last revitalization of thermal power block of 100 MW in TPP 'Kostolac A', made in the year 2004, during the operation of the plant, pulverized coal deposition often occurred in horizontal sections of the aero-mixture channels. Deposition phenomenon manifested itself in places ahead of spherical compensators in the direction of flow of pulverized coal to the burners, due to unfavorable configuration of these channels. Coal dust deposited in the channels dried and spontaneously combusted, causing numerous damage to channels and its isolation as well as the frequent stoppage of the operation for necessary interventions. The paper presents the original solution of reconstruction of aero-mixture channels which prevented deposition of coal dust and its eventual ignition. In this way the reliability of the mill plant is maximized and higher availability of boiler and block as a whole is achieved.",
publisher = "Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd",
journal = "Thermal Science",
title = "Reconstruction of the aero-mixture channels of the pulverized coal plant of the 100 MW power plant unit",
pages = "676-663",
number = "3",
volume = "15",
doi = "10.2298/TSCI100412013I"
}

Ivanović, V. B., Živanović, T., Tucaković, D.,& Stupar, G.. (2011). Reconstruction of the aero-mixture channels of the pulverized coal plant of the 100 MW power plant unit. in Thermal Science
Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd., 15(3), 663-676.
https://doi.org/10.2298/TSCI100412013I

Ivanović VB, Živanović T, Tucaković D, Stupar G. Reconstruction of the aero-mixture channels of the pulverized coal plant of the 100 MW power plant unit. in Thermal Science. 2011;15(3):663-676.
doi:10.2298/TSCI100412013I .

Ivanović, Vladan B., Živanović, Titoslav, Tucaković, Dragan, Stupar, Goran, "Reconstruction of the aero-mixture channels of the pulverized coal plant of the 100 MW power plant unit" in Thermal Science, 15, no. 3 (2011):663-676,
https://doi.org/10.2298/TSCI100412013I . .

TY  - CONF
AU  - Crnomarković, Nenad
AU  - Sijerčić, Miroslav
AU  - Belošević, Srđan V.
AU  - Stanković, B.
AU  - Tucaković, Dragan
AU  - Živanović, Titoslav
PY  - 2011
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/1288
AB  - Radiation is dominant mode of heat transfer in all types of combustion systems. Radiative heat transfer is described by radiative transfer equation, which indicates the importance of radiative properties of medium. Increase of radiation intensity due to emission of radiation is directly proportional to absorption coefficient of medium, and to scattering coefficient due to inscattering. In-scattering of radiation depends also on scattering phase function. Radiative properties of dispersed phase of pulverized coal flame are mainly determined by flyash particles, particle diameter of which is in the range from 0,1 to 50,0 μm. For particles of that size and for near infrared spectral interval, scattering phase function of single particle changes its form from almost isotropic to almost forward. Sensitivity of numerical simulations of pulverized coal furnaces to type of radiation scattering is the main objective of investigation. Tangentially fired dry bottom pulverized coal furnace of 210 MWe boiler has been chosen for numerical simulations. Numerical simulations have solved chemically reacting two phase particle gas flow with radiative heat transfer. Radiative heat transfer has been modelled using six-flux model. Radiative properties have been determined for absorbing, emitting and scattering medium. Scattering coefficients of the six-flux model have been determined for forward and isotropic scattering phase function. Grid indipendent results of numerical simulations have been obtained. Numerical simulations have been verified by comparison with results of measurements. Sensitivity of numerical simulations to type of radiation scattering has been investigated through comparison of temperature field, total radiation fluxes field, field of incident wall fluxes and absorbed heat by furnace walls. Although it has been shown that absorbed heat by furnace walls is bigger in case of isotropic scattering, result of investigation has shown that numerical simulations are almost insensitive to type of radiation scattering.
PB  - Nis University
C3  - Proceedings of the 24th International Conference on Efficiency, Cost, Optimization, Simulation and E
T1  - Influence of forward scattering on prediction of temperature and radiation fields inside the pulverized coal furnace
EP  - 703
SP  - 692
UR  - https://hdl.handle.net/21.15107/rcub_machinery_1288
ER  - 

@conference{
author = "Crnomarković, Nenad and Sijerčić, Miroslav and Belošević, Srđan V. and Stanković, B. and Tucaković, Dragan and Živanović, Titoslav",
year = "2011",
abstract = "Radiation is dominant mode of heat transfer in all types of combustion systems. Radiative heat transfer is described by radiative transfer equation, which indicates the importance of radiative properties of medium. Increase of radiation intensity due to emission of radiation is directly proportional to absorption coefficient of medium, and to scattering coefficient due to inscattering. In-scattering of radiation depends also on scattering phase function. Radiative properties of dispersed phase of pulverized coal flame are mainly determined by flyash particles, particle diameter of which is in the range from 0,1 to 50,0 μm. For particles of that size and for near infrared spectral interval, scattering phase function of single particle changes its form from almost isotropic to almost forward. Sensitivity of numerical simulations of pulverized coal furnaces to type of radiation scattering is the main objective of investigation. Tangentially fired dry bottom pulverized coal furnace of 210 MWe boiler has been chosen for numerical simulations. Numerical simulations have solved chemically reacting two phase particle gas flow with radiative heat transfer. Radiative heat transfer has been modelled using six-flux model. Radiative properties have been determined for absorbing, emitting and scattering medium. Scattering coefficients of the six-flux model have been determined for forward and isotropic scattering phase function. Grid indipendent results of numerical simulations have been obtained. Numerical simulations have been verified by comparison with results of measurements. Sensitivity of numerical simulations to type of radiation scattering has been investigated through comparison of temperature field, total radiation fluxes field, field of incident wall fluxes and absorbed heat by furnace walls. Although it has been shown that absorbed heat by furnace walls is bigger in case of isotropic scattering, result of investigation has shown that numerical simulations are almost insensitive to type of radiation scattering.",
publisher = "Nis University",
journal = "Proceedings of the 24th International Conference on Efficiency, Cost, Optimization, Simulation and E",
title = "Influence of forward scattering on prediction of temperature and radiation fields inside the pulverized coal furnace",
pages = "703-692",
url = "https://hdl.handle.net/21.15107/rcub_machinery_1288"
}

Crnomarković, N., Sijerčić, M., Belošević, S. V., Stanković, B., Tucaković, D.,& Živanović, T.. (2011). Influence of forward scattering on prediction of temperature and radiation fields inside the pulverized coal furnace. in Proceedings of the 24th International Conference on Efficiency, Cost, Optimization, Simulation and E
Nis University., 692-703.
https://hdl.handle.net/21.15107/rcub_machinery_1288

Crnomarković N, Sijerčić M, Belošević SV, Stanković B, Tucaković D, Živanović T. Influence of forward scattering on prediction of temperature and radiation fields inside the pulverized coal furnace. in Proceedings of the 24th International Conference on Efficiency, Cost, Optimization, Simulation and E. 2011;:692-703.
https://hdl.handle.net/21.15107/rcub_machinery_1288 .

Crnomarković, Nenad, Sijerčić, Miroslav, Belošević, Srđan V., Stanković, B., Tucaković, Dragan, Živanović, Titoslav, "Influence of forward scattering on prediction of temperature and radiation fields inside the pulverized coal furnace" in Proceedings of the 24th International Conference on Efficiency, Cost, Optimization, Simulation and E (2011):692-703,
https://hdl.handle.net/21.15107/rcub_machinery_1288 .

TY  - JOUR
AU  - Crnomarković, Nenad
AU  - Sijerčić, Miroslav
AU  - Belošević, Srđan V.
AU  - Živanović, Titoslav
AU  - Tucaković, Dragan
PY  - 2010
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/1070
AB  - Toplotno zračenje je dominantni mod prostiranja toplote sa vrućih produkata sagorevanja ka zidovima ložišta. Tačnost računanja flukseva zračenja je od suštinskog značaja za tačnost numeričkih simulacija, kojima se mogu predvideti performanse celokupnog procesa. Do sada je razvijeno nekoliko modela razmene toplote zračenjem, koji se mogu svrstati u fluksne, zonalne i hibridne modele. Reprezentativni modeli zračenja svake grupe opisani su u radu. Poređenje modela predstavljeno je za laboratorijsko ložište, za koje su prethodno određene tačne vrednosti neto razmenjenih energija zapreminskih zona i neto razmenjenih flukseva površinskih zona. Poređenje pokazuje da su zonalni modeli tačniji od fluksnih modela, čime se preporučuje njihova primena za numeričke simulacije ložišta za sagorevanje fosilnih goriva.
AB  - Thermal radiation is dominant mode of heat transfer from hot combustion products to the furnace walls. Accuracy of calculation of the heat exchanged by thermal radiation is essential for the accuracy of numerical simulation, by which performances of the whole process can be predicted. So far, several models of radiative heat exchange have been developed, which can be grouped into flux, zonal, and hybrid models. Representative models of each group have been described. Comparison of the models have been performed for the laboratory furnace, for which the exact values of radiative source term and net exchanged heat of furnace walls have been previously determined. Comparison shows that zonal models are more accurate than flux models and suggests their application for the numerical simulation of furnace for fossil fuel combustion.
PB  - Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd i Društvo termičara Srbije, Beograd
T2  - Termotehnika
T1  - Poređenje modela razmene toplote zračenjem koji se koriste za numeričke simulacije kotlovskih ložišta
T1  - Comparison of radiative heat transfer models used in numerical simulations of boiler furnaces
EP  - 161
IS  - 1
SP  - 153
VL  - 36
UR  - https://hdl.handle.net/21.15107/rcub_machinery_1070
ER  - 

@article{
author = "Crnomarković, Nenad and Sijerčić, Miroslav and Belošević, Srđan V. and Živanović, Titoslav and Tucaković, Dragan",
year = "2010",
abstract = "Toplotno zračenje je dominantni mod prostiranja toplote sa vrućih produkata sagorevanja ka zidovima ložišta. Tačnost računanja flukseva zračenja je od suštinskog značaja za tačnost numeričkih simulacija, kojima se mogu predvideti performanse celokupnog procesa. Do sada je razvijeno nekoliko modela razmene toplote zračenjem, koji se mogu svrstati u fluksne, zonalne i hibridne modele. Reprezentativni modeli zračenja svake grupe opisani su u radu. Poređenje modela predstavljeno je za laboratorijsko ložište, za koje su prethodno određene tačne vrednosti neto razmenjenih energija zapreminskih zona i neto razmenjenih flukseva površinskih zona. Poređenje pokazuje da su zonalni modeli tačniji od fluksnih modela, čime se preporučuje njihova primena za numeričke simulacije ložišta za sagorevanje fosilnih goriva., Thermal radiation is dominant mode of heat transfer from hot combustion products to the furnace walls. Accuracy of calculation of the heat exchanged by thermal radiation is essential for the accuracy of numerical simulation, by which performances of the whole process can be predicted. So far, several models of radiative heat exchange have been developed, which can be grouped into flux, zonal, and hybrid models. Representative models of each group have been described. Comparison of the models have been performed for the laboratory furnace, for which the exact values of radiative source term and net exchanged heat of furnace walls have been previously determined. Comparison shows that zonal models are more accurate than flux models and suggests their application for the numerical simulation of furnace for fossil fuel combustion.",
publisher = "Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd i Društvo termičara Srbije, Beograd",
journal = "Termotehnika",
title = "Poređenje modela razmene toplote zračenjem koji se koriste za numeričke simulacije kotlovskih ložišta, Comparison of radiative heat transfer models used in numerical simulations of boiler furnaces",
pages = "161-153",
number = "1",
volume = "36",
url = "https://hdl.handle.net/21.15107/rcub_machinery_1070"
}

Crnomarković, N., Sijerčić, M., Belošević, S. V., Živanović, T.,& Tucaković, D.. (2010). Poređenje modela razmene toplote zračenjem koji se koriste za numeričke simulacije kotlovskih ložišta. in Termotehnika
Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd i Društvo termičara Srbije, Beograd., 36(1), 153-161.
https://hdl.handle.net/21.15107/rcub_machinery_1070

Crnomarković N, Sijerčić M, Belošević SV, Živanović T, Tucaković D. Poređenje modela razmene toplote zračenjem koji se koriste za numeričke simulacije kotlovskih ložišta. in Termotehnika. 2010;36(1):153-161.
https://hdl.handle.net/21.15107/rcub_machinery_1070 .

Crnomarković, Nenad, Sijerčić, Miroslav, Belošević, Srđan V., Živanović, Titoslav, Tucaković, Dragan, "Poređenje modela razmene toplote zračenjem koji se koriste za numeričke simulacije kotlovskih ložišta" in Termotehnika, 36, no. 1 (2010):153-161,
https://hdl.handle.net/21.15107/rcub_machinery_1070 .

TY  - JOUR
AU  - Tucaković, Dragan
AU  - Živanović, Titoslav
AU  - Petrović, Milan
AU  - Ivanović, Vladan
AU  - Lazić, Sava
PY  - 2009
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/914
AB  - U okviru energetike Metanolsko-sirćetnog kompleksa u Kikindi nalaze se, pored procesnog kotla i ostale prateće opreme, tri jednaka parna kotla proizvodnje 'Minel-Kotlogradnja' koji su predviđeni za sagorevanje prirodnog gasa, mazuta i procesnih gasova. U cilju povećanja energetskog kapaciteta energane MSK Kikinda predviđena je ugradnja jedne gasne turbine snage 14 MW. S obzirom da izduvni gasovi iz gasne turbine imaju relativno visoku temperaturu i veliku količinu neiskorišćenog kiseonika iz vazduha, predviđeno je da se oni podele na dve jednake struje i da se uvedu u dva postojeća parna kotla produkcije od po 16,67 kg/s (60 t/h). Da bi se iskoristila ova toplota izduvnih gasova, kao i kiseonik sadržan u njima, neophodno je prvo zameniti postojeće gorionike i izvršiti neophodne rekonstrukcije grejnih površina u vertikalnom konvektivnom gasnom kanalu parnog kotla. Osim toga potrebno je proveriti da li postojeći ventilator za dimne gasove može da zadovolji novi režim rada pri kome se u jedan kotao uvodi polovina izduvnih gasova turbine. .
AB  - Within the energy system in Methanol & Acetic acid Complex (MSK) in Kikinda, beside process boiler and auxiliary equipment, there are three identical steam boilers made by 'Minel Kotlogradnja', provided for combustion of natural gas, fuel oil, and process gases. To increase capacity of the power plant in MSK Kikinda, installation of one 14 MW gas turbine is planed. Since the exhaust gases are at the relatively high temperature and contain large quantity of oxygen, it is specified to split exhaust gas into two equal streams and introduce them into two existing steam boilers, each having production of 16,67 kg/s (60 t/h). In order to use heat as well as oxygen from the exhaust gases in the existing boilers, it is necessary to replace the existing burners and to reconstruct heat exchangers in the vertical convective gas channel. Besides, it is necessary to verify if the existing flue gases fan can comply with the new operating regime, during which a half of the turbine exhaust gas is introduced into the steam boiler. .
PB  - Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd i Društvo termičara Srbije, Beograd
T2  - Termotehnika
T1  - Tehničko rešenje korišćenja toplote izduvnih gasova iz gasne turbine u postojećim parnim kotlovima u MSK Kikinda
T1  - Technical solution for use of gas turbine exhaust gases in the existing steam boilers in MSK Kikinda
EP  - 230
IS  - 3-4
SP  - 221
VL  - 35
UR  - https://hdl.handle.net/21.15107/rcub_machinery_914
ER  - 

@article{
author = "Tucaković, Dragan and Živanović, Titoslav and Petrović, Milan and Ivanović, Vladan and Lazić, Sava",
year = "2009",
abstract = "U okviru energetike Metanolsko-sirćetnog kompleksa u Kikindi nalaze se, pored procesnog kotla i ostale prateće opreme, tri jednaka parna kotla proizvodnje 'Minel-Kotlogradnja' koji su predviđeni za sagorevanje prirodnog gasa, mazuta i procesnih gasova. U cilju povećanja energetskog kapaciteta energane MSK Kikinda predviđena je ugradnja jedne gasne turbine snage 14 MW. S obzirom da izduvni gasovi iz gasne turbine imaju relativno visoku temperaturu i veliku količinu neiskorišćenog kiseonika iz vazduha, predviđeno je da se oni podele na dve jednake struje i da se uvedu u dva postojeća parna kotla produkcije od po 16,67 kg/s (60 t/h). Da bi se iskoristila ova toplota izduvnih gasova, kao i kiseonik sadržan u njima, neophodno je prvo zameniti postojeće gorionike i izvršiti neophodne rekonstrukcije grejnih površina u vertikalnom konvektivnom gasnom kanalu parnog kotla. Osim toga potrebno je proveriti da li postojeći ventilator za dimne gasove može da zadovolji novi režim rada pri kome se u jedan kotao uvodi polovina izduvnih gasova turbine. ., Within the energy system in Methanol & Acetic acid Complex (MSK) in Kikinda, beside process boiler and auxiliary equipment, there are three identical steam boilers made by 'Minel Kotlogradnja', provided for combustion of natural gas, fuel oil, and process gases. To increase capacity of the power plant in MSK Kikinda, installation of one 14 MW gas turbine is planed. Since the exhaust gases are at the relatively high temperature and contain large quantity of oxygen, it is specified to split exhaust gas into two equal streams and introduce them into two existing steam boilers, each having production of 16,67 kg/s (60 t/h). In order to use heat as well as oxygen from the exhaust gases in the existing boilers, it is necessary to replace the existing burners and to reconstruct heat exchangers in the vertical convective gas channel. Besides, it is necessary to verify if the existing flue gases fan can comply with the new operating regime, during which a half of the turbine exhaust gas is introduced into the steam boiler. .",
publisher = "Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd i Društvo termičara Srbije, Beograd",
journal = "Termotehnika",
title = "Tehničko rešenje korišćenja toplote izduvnih gasova iz gasne turbine u postojećim parnim kotlovima u MSK Kikinda, Technical solution for use of gas turbine exhaust gases in the existing steam boilers in MSK Kikinda",
pages = "230-221",
number = "3-4",
volume = "35",
url = "https://hdl.handle.net/21.15107/rcub_machinery_914"
}

Tucaković, D., Živanović, T., Petrović, M., Ivanović, V.,& Lazić, S.. (2009). Tehničko rešenje korišćenja toplote izduvnih gasova iz gasne turbine u postojećim parnim kotlovima u MSK Kikinda. in Termotehnika
Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd i Društvo termičara Srbije, Beograd., 35(3-4), 221-230.
https://hdl.handle.net/21.15107/rcub_machinery_914

Tucaković D, Živanović T, Petrović M, Ivanović V, Lazić S. Tehničko rešenje korišćenja toplote izduvnih gasova iz gasne turbine u postojećim parnim kotlovima u MSK Kikinda. in Termotehnika. 2009;35(3-4):221-230.
https://hdl.handle.net/21.15107/rcub_machinery_914 .

Tucaković, Dragan, Živanović, Titoslav, Petrović, Milan, Ivanović, Vladan, Lazić, Sava, "Tehničko rešenje korišćenja toplote izduvnih gasova iz gasne turbine u postojećim parnim kotlovima u MSK Kikinda" in Termotehnika, 35, no. 3-4 (2009):221-230,
https://hdl.handle.net/21.15107/rcub_machinery_914 .