TY  - JOUR
AU  - Stamenković, Ognjen
AU  - Stupar, Goran
AU  - Tucaković, Dragan
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6153
AB  - In case of firing pulverized coal in power steam boiler certain fuel preparation process has to be taken in order to ensure stable and optimal combustion in boil-er furnace. Before entering furnace low caloric coal is introduced from coal bun-ker to the coal preparation system where milling/pulverization and drying pro-cesses of raw large coal particles are conducted. For the purpose of defining fineness of grinding of pulverized coal mill gaseous mixture at mill outlet is in-troduced to the separator where large coal particles, separated from outgoing mill gaseous mixture, are recirculated to mill for regrinding. In this paper char-acter of two-phase flow in inertial separator at milling plant in TPP Nikola Tesla Unit B under various operating conditions has been analyzed. The CFD ap-proach has been used for calculating two-phase flow in separators flow domain. Measurement data taken on site along with results of performed heat balance calculations of milling plant have been used for validating calculation model as well as for setting appropriate boundary conditions in CFD model. The CFD cal-culations has been performed for different positions of all regulating flaps, recir-culation rates of gaseous phase and values of specific weight of solid phase in two-phase mixture. For evaluating separators operating performance at different operating regimes changes of milling capacity and fineness of grinding of pulver-ized coal at separators outlet have been observed. Additionally, deviation rate of trajectories of different-sized particles to the streamlines of gaseous phase has been examined.
PB  - Vinča Institute of Nuclear Sciences, Belgrade, Serbia
T2  - Thermal Science
T1  - ASSESSING THE IMPACT OF SPECIFIC WEIGHT OF DIFFERENT-SIZED PARTICLES ON OPERATIONAL PERFORMANCE OF COAL PREPARATION PLANT
VL  - 27
DO  - 10.2298/TSCI2301103S
ER  - 

@article{
author = "Stamenković, Ognjen and Stupar, Goran and Tucaković, Dragan",
year = "2022",
abstract = "In case of firing pulverized coal in power steam boiler certain fuel preparation process has to be taken in order to ensure stable and optimal combustion in boil-er furnace. Before entering furnace low caloric coal is introduced from coal bun-ker to the coal preparation system where milling/pulverization and drying pro-cesses of raw large coal particles are conducted. For the purpose of defining fineness of grinding of pulverized coal mill gaseous mixture at mill outlet is in-troduced to the separator where large coal particles, separated from outgoing mill gaseous mixture, are recirculated to mill for regrinding. In this paper char-acter of two-phase flow in inertial separator at milling plant in TPP Nikola Tesla Unit B under various operating conditions has been analyzed. The CFD ap-proach has been used for calculating two-phase flow in separators flow domain. Measurement data taken on site along with results of performed heat balance calculations of milling plant have been used for validating calculation model as well as for setting appropriate boundary conditions in CFD model. The CFD cal-culations has been performed for different positions of all regulating flaps, recir-culation rates of gaseous phase and values of specific weight of solid phase in two-phase mixture. For evaluating separators operating performance at different operating regimes changes of milling capacity and fineness of grinding of pulver-ized coal at separators outlet have been observed. Additionally, deviation rate of trajectories of different-sized particles to the streamlines of gaseous phase has been examined.",
publisher = "Vinča Institute of Nuclear Sciences, Belgrade, Serbia",
journal = "Thermal Science",
title = "ASSESSING THE IMPACT OF SPECIFIC WEIGHT OF DIFFERENT-SIZED PARTICLES ON OPERATIONAL PERFORMANCE OF COAL PREPARATION PLANT",
volume = "27",
doi = "10.2298/TSCI2301103S"
}

Stamenković, O., Stupar, G.,& Tucaković, D.. (2022). ASSESSING THE IMPACT OF SPECIFIC WEIGHT OF DIFFERENT-SIZED PARTICLES ON OPERATIONAL PERFORMANCE OF COAL PREPARATION PLANT. in Thermal Science
Vinča Institute of Nuclear Sciences, Belgrade, Serbia., 27.
https://doi.org/10.2298/TSCI2301103S

Stamenković O, Stupar G, Tucaković D. ASSESSING THE IMPACT OF SPECIFIC WEIGHT OF DIFFERENT-SIZED PARTICLES ON OPERATIONAL PERFORMANCE OF COAL PREPARATION PLANT. in Thermal Science. 2022;27.
doi:10.2298/TSCI2301103S .

Stamenković, Ognjen, Stupar, Goran, Tucaković, Dragan, "ASSESSING THE IMPACT OF SPECIFIC WEIGHT OF DIFFERENT-SIZED PARTICLES ON OPERATIONAL PERFORMANCE OF COAL PREPARATION PLANT" in Thermal Science, 27 (2022),
https://doi.org/10.2298/TSCI2301103S . .

TY  - CONF
AU  - Stamenković, Ognjen
AU  - Stupar, Goran
AU  - Tucaković, Dragan
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6164
AB  - Coal preparation system in case of firing lignite at thermal power plant is mainly consisted of high speed impact mills (hammer or fan mills) designed to perform efficient milling and drying of raw coal in order to significantly reduce moisture content and median diameter of particles leaving milling facility. Modelling of such complex rotating two-phase flow includes processes of mass, impulse and heat exchange between phases as well as interaction of coal particles with flow domain boundaries. In general, on the basis of performed researches, it can be stated that dissolution of single particle caused by impact on solid surface depends on intensity of cohesion forces inside particle structure and relative velocity of particle in respect to surface during contact. The aim of this part of research is to identify conditions under which contacts between solid phase and rotating impact plates mostly occur. In order to observe coal particles movement CFD calculations of two-phase flow for the geometry model of operated fan mill within TPP “Nikola Tesla”, Unit B, have been performed. Two-phase flow has been treated by use of CFD-DPM approach. Inlet boundary conditions has been set according to the measurements performed on concerned fan mill. Breakage phenomena has not been considered while contacts between solid phase and flow domain boundaries have been modelled by use of hard sphere model. Restitution coefficients has been adjusted so the movement of solid phase corresponds to the wearing pattern of impact plates. After performed calculations pattern of solid phase movement has been examined. Zones with lower and higher solid phase concentration in flow domain has been detected. Relative impact angles and relative impact velocities of coal particles in respect to the rotating impact plates during contact of these two entities has been identified. Additionally, kinetics of drying process used in calculations has been evaluated by use of measured moisture content in coal dust at milling plant outlet. Based on results of this study in next phase of research identification of coal particles breakage function in mill impeller will be performed. Given conclusions in this paper may be of importance for considering mill geometry modification for the purpose of increasing overall milling operating efficiency.
PB  - Faculty of Mechanical Engineering and Naval Architecture, Zagreb
C3  - Book of Abstracts of 17th Conference on Sustainable Development of Energy, Water and Environment Systems
T1  - Modeling Milling and Drying Process of Raw Coal in Fan Mill – Part 1: Characterization of Coal Particles Movement in Fan Mill Impeller
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6164
ER  - 

@conference{
author = "Stamenković, Ognjen and Stupar, Goran and Tucaković, Dragan",
year = "2022",
abstract = "Coal preparation system in case of firing lignite at thermal power plant is mainly consisted of high speed impact mills (hammer or fan mills) designed to perform efficient milling and drying of raw coal in order to significantly reduce moisture content and median diameter of particles leaving milling facility. Modelling of such complex rotating two-phase flow includes processes of mass, impulse and heat exchange between phases as well as interaction of coal particles with flow domain boundaries. In general, on the basis of performed researches, it can be stated that dissolution of single particle caused by impact on solid surface depends on intensity of cohesion forces inside particle structure and relative velocity of particle in respect to surface during contact. The aim of this part of research is to identify conditions under which contacts between solid phase and rotating impact plates mostly occur. In order to observe coal particles movement CFD calculations of two-phase flow for the geometry model of operated fan mill within TPP “Nikola Tesla”, Unit B, have been performed. Two-phase flow has been treated by use of CFD-DPM approach. Inlet boundary conditions has been set according to the measurements performed on concerned fan mill. Breakage phenomena has not been considered while contacts between solid phase and flow domain boundaries have been modelled by use of hard sphere model. Restitution coefficients has been adjusted so the movement of solid phase corresponds to the wearing pattern of impact plates. After performed calculations pattern of solid phase movement has been examined. Zones with lower and higher solid phase concentration in flow domain has been detected. Relative impact angles and relative impact velocities of coal particles in respect to the rotating impact plates during contact of these two entities has been identified. Additionally, kinetics of drying process used in calculations has been evaluated by use of measured moisture content in coal dust at milling plant outlet. Based on results of this study in next phase of research identification of coal particles breakage function in mill impeller will be performed. Given conclusions in this paper may be of importance for considering mill geometry modification for the purpose of increasing overall milling operating efficiency.",
publisher = "Faculty of Mechanical Engineering and Naval Architecture, Zagreb",
journal = "Book of Abstracts of 17th Conference on Sustainable Development of Energy, Water and Environment Systems",
title = "Modeling Milling and Drying Process of Raw Coal in Fan Mill – Part 1: Characterization of Coal Particles Movement in Fan Mill Impeller",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6164"
}

Stamenković, O., Stupar, G.,& Tucaković, D.. (2022). Modeling Milling and Drying Process of Raw Coal in Fan Mill – Part 1: Characterization of Coal Particles Movement in Fan Mill Impeller. in Book of Abstracts of 17th Conference on Sustainable Development of Energy, Water and Environment Systems
Faculty of Mechanical Engineering and Naval Architecture, Zagreb..
https://hdl.handle.net/21.15107/rcub_machinery_6164

Stamenković O, Stupar G, Tucaković D. Modeling Milling and Drying Process of Raw Coal in Fan Mill – Part 1: Characterization of Coal Particles Movement in Fan Mill Impeller. in Book of Abstracts of 17th Conference on Sustainable Development of Energy, Water and Environment Systems. 2022;.
https://hdl.handle.net/21.15107/rcub_machinery_6164 .

Stamenković, Ognjen, Stupar, Goran, Tucaković, Dragan, "Modeling Milling and Drying Process of Raw Coal in Fan Mill – Part 1: Characterization of Coal Particles Movement in Fan Mill Impeller" in Book of Abstracts of 17th Conference on Sustainable Development of Energy, Water and Environment Systems (2022),
https://hdl.handle.net/21.15107/rcub_machinery_6164 .

TY  - CONF
AU  - Stupar, Goran
AU  - Tucaković, Dragan
AU  - Stamenković, Ognjen
AU  - Stevanović, Slobodan
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6375
AB  - Пооштрени прописи у погледу емисије штетних гасова у околину, које ће се
примењивати у наредном периоду, намећу увођење примарних мера редукције азотних
оксида које подразумевају модификацију процеса сагоревања у ложишту парног котла К-3 у
ТЕ-ТО Нови Сад. Законске мере при сагоревању природног гаса у парним котловима велике
снаге прописују максимални садржај азотних оксида од 200 mg/Nm3 у сувим димним
гасовима при садржају кисеоника од 3 %. Сходно томе је у ТЕ-ТО Нови Сад испитано
увођење примарних мера редукције азотних оксида. Како услед модификације система
сагоревања може доћи до промене топлотног оптерећења испаривача смештеног у ложишту
у раду је приказана провера рада парног котла при новој организацији процеса сагоревања.
Ради анализе ефеката модернизације на рад парног котла у целини, извршено је прорачунско
спрезање диференцијалних математичких модела процеса сагоревања природног гаса,
струјања, зрачења продуката сагоревања и настајања азотних оксида са интегралним
термичким прорачунским процедурама. Овакав прорачунски систем омогућава поуздано
предвиђање радних карактеристика парног котла у условима подстехиометријског
сагоревања и сагоревања са рециркулацијом хладних продуката сагоревања са краја котла, 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 парног котла. На основу наведеног
извршени су прорачуни парног котла ТЕ-ТО Нови Сад за постојећи и реорганизовани систем
сагоревања. У раду је приказана анализа утицаја већег броја параметара на рад парног котла
са различитим примарним мерама. 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 2021
T1  - АНАЛИЗА УТИЦАЈА ПРИМАРНОГ РЕШЕЊА РЕДУКЦИЈЕ NOx НА ПРОЦЕСЕ У ПАРНОМ КОТЛУ К-3 У TE-TO НОВИ САД
EP  - 352
SP  - 340
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6375
ER  - 

@conference{
author = "Stupar, Goran and Tucaković, Dragan and Stamenković, Ognjen and Stevanović, Slobodan",
year = "2021",
abstract = "Пооштрени прописи у погледу емисије штетних гасова у околину, које ће се
примењивати у наредном периоду, намећу увођење примарних мера редукције азотних
оксида које подразумевају модификацију процеса сагоревања у ложишту парног котла К-3 у
ТЕ-ТО Нови Сад. Законске мере при сагоревању природног гаса у парним котловима велике
снаге прописују максимални садржај азотних оксида од 200 mg/Nm3 у сувим димним
гасовима при садржају кисеоника од 3 %. Сходно томе је у ТЕ-ТО Нови Сад испитано
увођење примарних мера редукције азотних оксида. Како услед модификације система
сагоревања може доћи до промене топлотног оптерећења испаривача смештеног у ложишту
у раду је приказана провера рада парног котла при новој организацији процеса сагоревања.
Ради анализе ефеката модернизације на рад парног котла у целини, извршено је прорачунско
спрезање диференцијалних математичких модела процеса сагоревања природног гаса,
струјања, зрачења продуката сагоревања и настајања азотних оксида са интегралним
термичким прорачунским процедурама. Овакав прорачунски систем омогућава поуздано
предвиђање радних карактеристика парног котла у условима подстехиометријског
сагоревања и сагоревања са рециркулацијом хладних продуката сагоревања са краја котла, 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 парног котла. На основу наведеног
извршени су прорачуни парног котла ТЕ-ТО Нови Сад за постојећи и реорганизовани систем
сагоревања. У раду је приказана анализа утицаја већег броја параметара на рад парног котла
са различитим примарним мерама. 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 2021",
title = "АНАЛИЗА УТИЦАЈА ПРИМАРНОГ РЕШЕЊА РЕДУКЦИЈЕ NOx НА ПРОЦЕСЕ У ПАРНОМ КОТЛУ К-3 У TE-TO НОВИ САД",
pages = "352-340",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6375"
}

Stupar, G., Tucaković, D., Stamenković, O.,& Stevanović, S.. (2021). АНАЛИЗА УТИЦАЈА ПРИМАРНОГ РЕШЕЊА РЕДУКЦИЈЕ NOx НА ПРОЦЕСЕ У ПАРНОМ КОТЛУ К-3 У TE-TO НОВИ САД. in Proceedings of Power Plants 2021
Society of Thermal Engineers of Serbia., 340-352.
https://hdl.handle.net/21.15107/rcub_machinery_6375

Stupar G, Tucaković D, Stamenković O, Stevanović S. АНАЛИЗА УТИЦАЈА ПРИМАРНОГ РЕШЕЊА РЕДУКЦИЈЕ NOx НА ПРОЦЕСЕ У ПАРНОМ КОТЛУ К-3 У TE-TO НОВИ САД. in Proceedings of Power Plants 2021. 2021;:340-352.
https://hdl.handle.net/21.15107/rcub_machinery_6375 .

Stupar, Goran, Tucaković, Dragan, Stamenković, Ognjen, Stevanović, Slobodan, "АНАЛИЗА УТИЦАЈА ПРИМАРНОГ РЕШЕЊА РЕДУКЦИЈЕ NOx НА ПРОЦЕСЕ У ПАРНОМ КОТЛУ К-3 У TE-TO НОВИ САД" in Proceedings of Power Plants 2021 (2021):340-352,
https://hdl.handle.net/21.15107/rcub_machinery_6375 .

TY  - CONF
AU  - Stupar, Goran
AU  - Tucaković, Dragan
AU  - Stamenković, Ognjen
AU  - Petrović, Luka
AU  - Vujičić, Borivoje
AU  - Novaković, Žarko
AU  - Milanović, Željko
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6374
AB  - У раду је приказано техничко решење модернизације у циљу повећања
ефикасности парног котла ТЕ Угљевик које подразумева реорганизацију система сагоревања.
Ефикаснији рад ложишта може се остварити заменом постојећих млазних горионика,
смањењем броја етажа горионика као и организацијом тангенцијалног сагоревања. Пламен
формиран у облику тубуса око два централна ложишног вртлога обезбеђује већу количину
топлоте која се предаје у ложишту, мање прљање његових екранских зидова па самим тим и
нижу средњу температуру продуката сагоревања на његовом излазу. Како изабрана
реорганизација утиче на повишење температуре свеже прегрејане паре и снижење
температуре накнадно прегрејане паре, предложенo је и смањење површине полуозраченог
прегрејача свеже прегрејане паре и повећање површине другог ступња прегрејача накнадно
прегрејане паре. Како услед реорганизације система сагоревања може доћи до промене
топлотног оптерећења испаривача смештеног у ложишту, у раду је приказана провера рада
парног котла при новим радним условима. Ради анализе ефеката модернизације на рад
парног котла у целини, извршено је прорачунско спрезање диференцијалних математичких
модела процеса сагоревања угљеног праха, струјања, зрачења продуката сагоревања и
настајања азотних оксида са интегралним термичким прорачунским процедурама. Овакав
прорачунски систем омогућава поуздано предвиђање радних карактеристика парног котла у
новим радним условима 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
парног котла. На основу наведеног извршени су прорачуни парног котла ТЕ Угљевик за
постојећи и реорганизовани систем сагоревања. Приказани систем прорачуна за рад котла је
верификован мерењем извршеним на предметном објекту у постојећим радним условима
PB  - Society of Thermal Engineers of Serbia
C3  - Proceedings of Power Plants 2021
T1  - ИСПИТИВАЊЕ УТИЦАЈА ПРОМЕНЕ СИСТЕМА САГОРЕВАЊА НА ПРОЦЕСЕ У ПАРНОМ КОТЛУ У TE УГЉЕВИК
EP  - 333
SP  - 322
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6374
ER  - 

@conference{
author = "Stupar, Goran and Tucaković, Dragan and Stamenković, Ognjen and Petrović, Luka and Vujičić, Borivoje and Novaković, Žarko and Milanović, Željko",
year = "2021",
abstract = "У раду је приказано техничко решење модернизације у циљу повећања
ефикасности парног котла ТЕ Угљевик које подразумева реорганизацију система сагоревања.
Ефикаснији рад ложишта може се остварити заменом постојећих млазних горионика,
смањењем броја етажа горионика као и организацијом тангенцијалног сагоревања. Пламен
формиран у облику тубуса око два централна ложишног вртлога обезбеђује већу количину
топлоте која се предаје у ложишту, мање прљање његових екранских зидова па самим тим и
нижу средњу температуру продуката сагоревања на његовом излазу. Како изабрана
реорганизација утиче на повишење температуре свеже прегрејане паре и снижење
температуре накнадно прегрејане паре, предложенo је и смањење површине полуозраченог
прегрејача свеже прегрејане паре и повећање површине другог ступња прегрејача накнадно
прегрејане паре. Како услед реорганизације система сагоревања може доћи до промене
топлотног оптерећења испаривача смештеног у ложишту, у раду је приказана провера рада
парног котла при новим радним условима. Ради анализе ефеката модернизације на рад
парног котла у целини, извршено је прорачунско спрезање диференцијалних математичких
модела процеса сагоревања угљеног праха, струјања, зрачења продуката сагоревања и
настајања азотних оксида са интегралним термичким прорачунским процедурама. Овакав
прорачунски систем омогућава поуздано предвиђање радних карактеристика парног котла у
новим радним условима 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
парног котла. На основу наведеног извршени су прорачуни парног котла ТЕ Угљевик за
постојећи и реорганизовани систем сагоревања. Приказани систем прорачуна за рад котла је
верификован мерењем извршеним на предметном објекту у постојећим радним условима",
publisher = "Society of Thermal Engineers of Serbia",
journal = "Proceedings of Power Plants 2021",
title = "ИСПИТИВАЊЕ УТИЦАЈА ПРОМЕНЕ СИСТЕМА САГОРЕВАЊА НА ПРОЦЕСЕ У ПАРНОМ КОТЛУ У TE УГЉЕВИК",
pages = "333-322",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6374"
}

Stupar, G., Tucaković, D., Stamenković, O., Petrović, L., Vujičić, B., Novaković, Ž.,& Milanović, Ž.. (2021). ИСПИТИВАЊЕ УТИЦАЈА ПРОМЕНЕ СИСТЕМА САГОРЕВАЊА НА ПРОЦЕСЕ У ПАРНОМ КОТЛУ У TE УГЉЕВИК. in Proceedings of Power Plants 2021
Society of Thermal Engineers of Serbia., 322-333.
https://hdl.handle.net/21.15107/rcub_machinery_6374

Stupar G, Tucaković D, Stamenković O, Petrović L, Vujičić B, Novaković Ž, Milanović Ž. ИСПИТИВАЊЕ УТИЦАЈА ПРОМЕНЕ СИСТЕМА САГОРЕВАЊА НА ПРОЦЕСЕ У ПАРНОМ КОТЛУ У TE УГЉЕВИК. in Proceedings of Power Plants 2021. 2021;:322-333.
https://hdl.handle.net/21.15107/rcub_machinery_6374 .

Stupar, Goran, Tucaković, Dragan, Stamenković, Ognjen, Petrović, Luka, Vujičić, Borivoje, Novaković, Žarko, Milanović, Željko, "ИСПИТИВАЊЕ УТИЦАЈА ПРОМЕНЕ СИСТЕМА САГОРЕВАЊА НА ПРОЦЕСЕ У ПАРНОМ КОТЛУ У TE УГЉЕВИК" in Proceedings of Power Plants 2021 (2021):322-333,
https://hdl.handle.net/21.15107/rcub_machinery_6374 .

TY  - JOUR
AU  - Milicević, Aleksandar
AU  - Belošević, Srđan V.
AU  - Crnomarković, Nenad
AU  - Tomanović, Ivan
AU  - Tucaković, Dragan
PY  - 2020
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3271
AB  - In this paper pulverised lignite-fired 350 MWe boiler furnace is selected for numerical simulations performed by using in-house developed computer code to deepen understanding of complex processes during direct co-firing with wheat straw. The CFD code is significantly upgraded to accommodate simulation of lignite and wheat straw particle reactions and interactions with gas phase, and to allow analysis of particle behavior under real conditions inside the furnace. Parametric analysis is done with emphasis on the thermal share, size and shape of biomass particle, method of biomass feeding into the furnace and the fuel distribution over the burner tiers. In the most favorable co-firing case (with 10% of wheat straw thermal ratio and particle diameter of 500 mu m), the higher furnace exit gas temperature for 8 degrees C and lower NOx emission of 18.2% are achieved, compared with pure lignite combustion case. The optimal co-firing case provides relatively low percentage of wheat straw particles falling into the hopper (9.57%) and relatively high mass burnout of biomass particles at the furnace outlet (91.81%). Non-spherical shape of wheat straw particles is found to affect the fuel trajectories and flame significantly. The results of parametric analysis could support implementation of biomass co-firing technology in existing coal-fired power plants, to increase energy efficiency and mitigate environmental pollutants.
PB  - Elsevier Sci Ltd, Oxford
T2  - Applied Energy
T1  - Mathematical modelling and optimisation of lignite and wheat straw co-combustion in 350 MWe boiler furnace
VL  - 260
DO  - 10.1016/j.apenergy.2019.114206
ER  - 

@article{
author = "Milicević, Aleksandar and Belošević, Srđan V. and Crnomarković, Nenad and Tomanović, Ivan and Tucaković, Dragan",
year = "2020",
abstract = "In this paper pulverised lignite-fired 350 MWe boiler furnace is selected for numerical simulations performed by using in-house developed computer code to deepen understanding of complex processes during direct co-firing with wheat straw. The CFD code is significantly upgraded to accommodate simulation of lignite and wheat straw particle reactions and interactions with gas phase, and to allow analysis of particle behavior under real conditions inside the furnace. Parametric analysis is done with emphasis on the thermal share, size and shape of biomass particle, method of biomass feeding into the furnace and the fuel distribution over the burner tiers. In the most favorable co-firing case (with 10% of wheat straw thermal ratio and particle diameter of 500 mu m), the higher furnace exit gas temperature for 8 degrees C and lower NOx emission of 18.2% are achieved, compared with pure lignite combustion case. The optimal co-firing case provides relatively low percentage of wheat straw particles falling into the hopper (9.57%) and relatively high mass burnout of biomass particles at the furnace outlet (91.81%). Non-spherical shape of wheat straw particles is found to affect the fuel trajectories and flame significantly. The results of parametric analysis could support implementation of biomass co-firing technology in existing coal-fired power plants, to increase energy efficiency and mitigate environmental pollutants.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Applied Energy",
title = "Mathematical modelling and optimisation of lignite and wheat straw co-combustion in 350 MWe boiler furnace",
volume = "260",
doi = "10.1016/j.apenergy.2019.114206"
}

Milicević, A., Belošević, S. V., Crnomarković, N., Tomanović, I.,& Tucaković, D.. (2020). Mathematical modelling and optimisation of lignite and wheat straw co-combustion in 350 MWe boiler furnace. in Applied Energy
Elsevier Sci Ltd, Oxford., 260.
https://doi.org/10.1016/j.apenergy.2019.114206

Milicević A, Belošević SV, Crnomarković N, Tomanović I, Tucaković D. Mathematical modelling and optimisation of lignite and wheat straw co-combustion in 350 MWe boiler furnace. in Applied Energy. 2020;260.
doi:10.1016/j.apenergy.2019.114206 .

Milicević, Aleksandar, Belošević, Srđan V., Crnomarković, Nenad, Tomanović, Ivan, Tucaković, Dragan, "Mathematical modelling and optimisation of lignite and wheat straw co-combustion in 350 MWe boiler furnace" in Applied Energy, 260 (2020),
https://doi.org/10.1016/j.apenergy.2019.114206 . .

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  - Tomanović, Ivan
AU  - Belošević, Srđan V.
AU  - Crnomarković, Nenad
AU  - Milicević, Aleksandar
AU  - Tucaković, Dragan
PY  - 2019
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3232
AB  - Results of the study on SO2 reduction in a utility boiler furnace by means of furnace sorbent injection are presented in this paper with analysis of major influential parameters. The Ca-based sorbent injection process in pulverized lignite fired boiler furnace with tangentially arranged burners is simulated. In simulations sorbent particles are distributed among the burner tiers, where they are injected together with coal, and also through sorbent injection ports located above the burners. The sorbent reactions model was adapted to be efficiently implemented in the code for CFD simulations of complex processes considering both the calculation time and the results accuracy. The sorbent particles reaction model was simplified with several assumptions to allow for faster calculations and significantly reduce simulation time without loss in calculation precision during the particle tracking in boiler furnace. Two phase gas-particle flow is modeled, with coal and sorbent particles reactions and interactions with gaseous phase. Test-cases based on fuels with different composition and combustion organization were simulated in details, and results showed that significant increase in reduction of SO2 at furnace exit could be achieved by proper sorbent injection. The sorbent injection locations were analyzed with special care to enable maximum SO2 capture in the case-study furnace under investigated conditions. Most of the test-cases with low SO2 capture had one or more of the following problems: intensive particle sintering, low local temperatures (leading to low calcination rates), or bad particles distribution. Significant SO2 retention was possible when the process was organized in such a way that particles were exposed to optimal temperature range, and injected in the furnace zones with high SO2 concentration simultaneously. It was shown that better results can be achieved by injection of sorbent through multiple burner tiers, with SO2 emission reduction efficiency around 60% at the furnace exit in several well optimized test-cases.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - International Journal of Heat and Mass Transfer
T1  - Numerical modeling of in-furnace sulfur removal by sorbent injection during pulverized lignite combustion
EP  - 114
SP  - 98
VL  - 128
DO  - 10.1016/j.ijheatmasstransfer.2018.08.129
ER  - 

@article{
author = "Tomanović, Ivan and Belošević, Srđan V. and Crnomarković, Nenad and Milicević, Aleksandar and Tucaković, Dragan",
year = "2019",
abstract = "Results of the study on SO2 reduction in a utility boiler furnace by means of furnace sorbent injection are presented in this paper with analysis of major influential parameters. The Ca-based sorbent injection process in pulverized lignite fired boiler furnace with tangentially arranged burners is simulated. In simulations sorbent particles are distributed among the burner tiers, where they are injected together with coal, and also through sorbent injection ports located above the burners. The sorbent reactions model was adapted to be efficiently implemented in the code for CFD simulations of complex processes considering both the calculation time and the results accuracy. The sorbent particles reaction model was simplified with several assumptions to allow for faster calculations and significantly reduce simulation time without loss in calculation precision during the particle tracking in boiler furnace. Two phase gas-particle flow is modeled, with coal and sorbent particles reactions and interactions with gaseous phase. Test-cases based on fuels with different composition and combustion organization were simulated in details, and results showed that significant increase in reduction of SO2 at furnace exit could be achieved by proper sorbent injection. The sorbent injection locations were analyzed with special care to enable maximum SO2 capture in the case-study furnace under investigated conditions. Most of the test-cases with low SO2 capture had one or more of the following problems: intensive particle sintering, low local temperatures (leading to low calcination rates), or bad particles distribution. Significant SO2 retention was possible when the process was organized in such a way that particles were exposed to optimal temperature range, and injected in the furnace zones with high SO2 concentration simultaneously. It was shown that better results can be achieved by injection of sorbent through multiple burner tiers, with SO2 emission reduction efficiency around 60% at the furnace exit in several well optimized test-cases.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "International Journal of Heat and Mass Transfer",
title = "Numerical modeling of in-furnace sulfur removal by sorbent injection during pulverized lignite combustion",
pages = "114-98",
volume = "128",
doi = "10.1016/j.ijheatmasstransfer.2018.08.129"
}

Tomanović, I., Belošević, S. V., Crnomarković, N., Milicević, A.,& Tucaković, D.. (2019). Numerical modeling of in-furnace sulfur removal by sorbent injection during pulverized lignite combustion. in International Journal of Heat and Mass Transfer
Pergamon-Elsevier Science Ltd, Oxford., 128, 98-114.
https://doi.org/10.1016/j.ijheatmasstransfer.2018.08.129

Tomanović I, Belošević SV, Crnomarković N, Milicević A, Tucaković D. Numerical modeling of in-furnace sulfur removal by sorbent injection during pulverized lignite combustion. in International Journal of Heat and Mass Transfer. 2019;128:98-114.
doi:10.1016/j.ijheatmasstransfer.2018.08.129 .

Tomanović, Ivan, Belošević, Srđan V., Crnomarković, Nenad, Milicević, Aleksandar, Tucaković, Dragan, "Numerical modeling of in-furnace sulfur removal by sorbent injection during pulverized lignite combustion" in International Journal of Heat and Mass Transfer, 128 (2019):98-114,
https://doi.org/10.1016/j.ijheatmasstransfer.2018.08.129 . .

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  - JOUR
AU  - Milićević, Aleksandar
AU  - Belošević, Srđan V.
AU  - Tomanović, Ivan D.
AU  - Crnomarković, Nenad
AU  - Tucaković, Dragan
PY  - 2018
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/2801
AB  - A comprehensive mathematical model for prediction of turbulent transport processes and reactions during co-combustion of pulverized fuels in furnace fired by 150 kW swirl stabilized-burner has been developed. Numerical simulations have been carried out by using an in-house developed computer code, with Euler-Lagrangian approach to the two-phase flow modelling and sub-models for individual phases during complex combustion process: evaporation, devolatilization, combustion of volatiles, and char combustion. For sub-model of coal devolatilization the approach of Merrick is adopted, while for biomass devolatilization the combination models of Merrick, and of Xu and Tomita are selected. Products of devolatilization of both the pulverized coal and biomass are considered to contain the primary gaseous volatiles and tar, which further decomposes to secondary gaseous volatiles and residual soot. The residual soot in tar and carbon in coal and biomass char are oxidized directly, with ash remaining. For volatiles combustion the finite rate/eddy break-up model is chosen, while for char oxidation the combined kinetic-diffusion model is used. The comprehensive combustion model is validated against available experimental data from the case-study cylindrical furnace. The agreement of the simulations with the data for the main species in the furnace is quite good, while some discrepancies from experimental values are found in the core zone. The presented model is a good basis for further research of co-combustion processes and is able to provide analysis of wide range of pulverized fuels, i. e. coal and biomass. At the same time, the model is relatively simple numerical tool for effective and practical use.
PB  - Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd
T2  - Thermal Science
T1  - Development of mathematical model for co-firing pulverized coal and biomass in experimental furnace
EP  - 719
IS  - 1
SP  - 709
VL  - 22
DO  - 10.2298/TSCI170525206M
ER  - 

@article{
author = "Milićević, Aleksandar and Belošević, Srđan V. and Tomanović, Ivan D. and Crnomarković, Nenad and Tucaković, Dragan",
year = "2018",
abstract = "A comprehensive mathematical model for prediction of turbulent transport processes and reactions during co-combustion of pulverized fuels in furnace fired by 150 kW swirl stabilized-burner has been developed. Numerical simulations have been carried out by using an in-house developed computer code, with Euler-Lagrangian approach to the two-phase flow modelling and sub-models for individual phases during complex combustion process: evaporation, devolatilization, combustion of volatiles, and char combustion. For sub-model of coal devolatilization the approach of Merrick is adopted, while for biomass devolatilization the combination models of Merrick, and of Xu and Tomita are selected. Products of devolatilization of both the pulverized coal and biomass are considered to contain the primary gaseous volatiles and tar, which further decomposes to secondary gaseous volatiles and residual soot. The residual soot in tar and carbon in coal and biomass char are oxidized directly, with ash remaining. For volatiles combustion the finite rate/eddy break-up model is chosen, while for char oxidation the combined kinetic-diffusion model is used. The comprehensive combustion model is validated against available experimental data from the case-study cylindrical furnace. The agreement of the simulations with the data for the main species in the furnace is quite good, while some discrepancies from experimental values are found in the core zone. The presented model is a good basis for further research of co-combustion processes and is able to provide analysis of wide range of pulverized fuels, i. e. coal and biomass. At the same time, the model is relatively simple numerical tool for effective and practical use.",
publisher = "Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd",
journal = "Thermal Science",
title = "Development of mathematical model for co-firing pulverized coal and biomass in experimental furnace",
pages = "719-709",
number = "1",
volume = "22",
doi = "10.2298/TSCI170525206M"
}

Milićević, A., Belošević, S. V., Tomanović, I. D., Crnomarković, N.,& Tucaković, D.. (2018). Development of mathematical model for co-firing pulverized coal and biomass in experimental furnace. in Thermal Science
Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd., 22(1), 709-719.
https://doi.org/10.2298/TSCI170525206M

Milićević A, Belošević SV, Tomanović ID, Crnomarković N, Tucaković D. Development of mathematical model for co-firing pulverized coal and biomass in experimental furnace. in Thermal Science. 2018;22(1):709-719.
doi:10.2298/TSCI170525206M .

Milićević, Aleksandar, Belošević, Srđan V., Tomanović, Ivan D., Crnomarković, Nenad, Tucaković, Dragan, "Development of mathematical model for co-firing pulverized coal and biomass in experimental furnace" in Thermal Science, 22, no. 1 (2018):709-719,
https://doi.org/10.2298/TSCI170525206M . .

TY  - CONF
AU  - Jaramaz, Lana
AU  - Banjac, Miloš
PY  - 2017
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6640
AB  - The solar energy is an inexhaustible source of energy and offers many environmental advantages compared to conventional energy sources. This paper deals with exergy efficiency of solar systems. The exergy is the measure of the maximum useful work which can be achieved by a system having to interact with an environment which is at a constant pressure and temperature. The exergetic analysis or analysis by the Second Law of Thermodynamics, has proven to be a powerful tool for thermodynamic analysis of power systems. In other words, it can be widely used in the assessment and evaluation of processes and the performances of energy systems. Although today many technically and economically successful solar systems are in operation, there is no widely accepted basis for comparison of achieved performances of a solar system with one that runs under different conditions. For this reason, this paper has focused on developing simple methods for assessing and comparing the exergetic efficiencies of the solar systems. There are several ways of using solar energy, and this work is focused on the collectors of solar energy used in solar water heaters, solar cookers, as well as photovoltaic and hybrid solar collectors.
PB  - University of Niš, Faculty of Mechanical Engineering in Niš
C3  - The Proceedings of the 18th Symposium on Thermal Science and Engineering of Serbia - SIMTERM 2017
T1  - Exergy efficiency of solar components and systems
EP  - 299
SP  - 291
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6640
ER  - 

@conference{
author = "Jaramaz, Lana and Banjac, Miloš",
year = "2017",
abstract = "The solar energy is an inexhaustible source of energy and offers many environmental advantages compared to conventional energy sources. This paper deals with exergy efficiency of solar systems. The exergy is the measure of the maximum useful work which can be achieved by a system having to interact with an environment which is at a constant pressure and temperature. The exergetic analysis or analysis by the Second Law of Thermodynamics, has proven to be a powerful tool for thermodynamic analysis of power systems. In other words, it can be widely used in the assessment and evaluation of processes and the performances of energy systems. Although today many technically and economically successful solar systems are in operation, there is no widely accepted basis for comparison of achieved performances of a solar system with one that runs under different conditions. For this reason, this paper has focused on developing simple methods for assessing and comparing the exergetic efficiencies of the solar systems. There are several ways of using solar energy, and this work is focused on the collectors of solar energy used in solar water heaters, solar cookers, as well as photovoltaic and hybrid solar collectors.",
publisher = "University of Niš, Faculty of Mechanical Engineering in Niš",
journal = "The Proceedings of the 18th Symposium on Thermal Science and Engineering of Serbia - SIMTERM 2017",
title = "Exergy efficiency of solar components and systems",
pages = "299-291",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6640"
}

Jaramaz, L.,& Banjac, M.. (2017). Exergy efficiency of solar components and systems. in The Proceedings of the 18th Symposium on Thermal Science and Engineering of Serbia - SIMTERM 2017
University of Niš, Faculty of Mechanical Engineering in Niš., 291-299.
https://hdl.handle.net/21.15107/rcub_machinery_6640

Jaramaz L, Banjac M. Exergy efficiency of solar components and systems. in The Proceedings of the 18th Symposium on Thermal Science and Engineering of Serbia - SIMTERM 2017. 2017;:291-299.
https://hdl.handle.net/21.15107/rcub_machinery_6640 .

Jaramaz, Lana, Banjac, Miloš, "Exergy efficiency of solar components and systems" in The Proceedings of the 18th Symposium on Thermal Science and Engineering of Serbia - SIMTERM 2017 (2017):291-299,
https://hdl.handle.net/21.15107/rcub_machinery_6640 .

TY  - JOUR
AU  - Tomanović, Ivan D.
AU  - Belošević, Srđan V.
AU  - Milićević, Aleksandar
AU  - Crnomarković, Nenad
AU  - Tucaković, Dragan
PY  - 2017
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/2614
AB  - Furnace sorbent injection for sulfur removal from flue gas presents a challenge, as the proper process optimization is of crucial importance in order to obtain both high sulfur removal rates and good sorbent utilization. In the simulations a two-phase gas-particle flow is considered. Pulverized coal and calcium-based sorbent particles motion is simulated inside of the boiler furnace. It is important to determine trajectories of particles in the furnace, in order to monitor the particles heat and concentration history. A two-way coupling of the phases is considered influence of the gas phase on the particles, and vice versa. Particle-to-particle collisions are neglected. Mutual influence of gas and dispersed phase is modeled by corresponding terms in the transport equations for gas phase and the equations describing the particles turbulent dispersion. Gas phase is modeled in Eulerian field, while the particles are tracked in Lagrangian field. Turbulence is modeled by the standard k-epsilon model, with additional terms for turbulence modulation. Distribution, dispersion and residence time of sorbent particles in the furnace have a considerable influence on the desulfurization process. It was shown that, by proper organization of process, significant improvement considering emission reduction can be achieved.
PB  - Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd
T2  - Thermal Science
T1  - Numerical tracking of sorbent particles and distribution during gas desulfurization in pulverized coal-fired furnace
EP  - S769
SP  - S759
VL  - 21
DO  - 10.2298/TSCI160212196T
ER  - 

@article{
author = "Tomanović, Ivan D. and Belošević, Srđan V. and Milićević, Aleksandar and Crnomarković, Nenad and Tucaković, Dragan",
year = "2017",
abstract = "Furnace sorbent injection for sulfur removal from flue gas presents a challenge, as the proper process optimization is of crucial importance in order to obtain both high sulfur removal rates and good sorbent utilization. In the simulations a two-phase gas-particle flow is considered. Pulverized coal and calcium-based sorbent particles motion is simulated inside of the boiler furnace. It is important to determine trajectories of particles in the furnace, in order to monitor the particles heat and concentration history. A two-way coupling of the phases is considered influence of the gas phase on the particles, and vice versa. Particle-to-particle collisions are neglected. Mutual influence of gas and dispersed phase is modeled by corresponding terms in the transport equations for gas phase and the equations describing the particles turbulent dispersion. Gas phase is modeled in Eulerian field, while the particles are tracked in Lagrangian field. Turbulence is modeled by the standard k-epsilon model, with additional terms for turbulence modulation. Distribution, dispersion and residence time of sorbent particles in the furnace have a considerable influence on the desulfurization process. It was shown that, by proper organization of process, significant improvement considering emission reduction can be achieved.",
publisher = "Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd",
journal = "Thermal Science",
title = "Numerical tracking of sorbent particles and distribution during gas desulfurization in pulverized coal-fired furnace",
pages = "S769-S759",
volume = "21",
doi = "10.2298/TSCI160212196T"
}

Tomanović, I. D., Belošević, S. V., Milićević, A., Crnomarković, N.,& Tucaković, D.. (2017). Numerical tracking of sorbent particles and distribution during gas desulfurization in pulverized coal-fired furnace. in Thermal Science
Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd., 21, S759-S769.
https://doi.org/10.2298/TSCI160212196T

Tomanović ID, Belošević SV, Milićević A, Crnomarković N, Tucaković D. Numerical tracking of sorbent particles and distribution during gas desulfurization in pulverized coal-fired furnace. in Thermal Science. 2017;21:S759-S769.
doi:10.2298/TSCI160212196T .

Tomanović, Ivan D., Belošević, Srđan V., Milićević, Aleksandar, Crnomarković, Nenad, Tucaković, Dragan, "Numerical tracking of sorbent particles and distribution during gas desulfurization in pulverized coal-fired furnace" in Thermal Science, 21 (2017):S759-S769,
https://doi.org/10.2298/TSCI160212196T . .

TY  - JOUR
AU  - Stojanović, Andrijana
AU  - Stevanović, Vladimir
AU  - Petrović, Milan M.
AU  - Živković, Dragoljub
PY  - 2016
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/2290
AB  - Multi-dimensional numerical simulation of the atmospheric saturated pool boiling is performed. The applied modelling and numerical methods enable a full representation of the liquid and vapour two-phase mixture behaviour on the heated surface, with included prediction of the swell level and heated wall temperature field. In this way the integral behaviour of nucleate pool boiling is simulated. The micro conditions of bubble generation at the heated wall surface are modelled by the bubble nucleation site density, the liquid wetting contact angle and the bubble grow time. The bubble nucleation sites are randomly located within zones of equal size, where the number of zones equals the nucleation site density. The conjugate heat transfer from the heated wall to the liquid is taken into account in wetted heated wall areas around bubble nucleation sites. The boiling curve relation between the heat flux and the heated wall surface temperature in excess of the saturation temperature is predicted for the pool boiling conditions reported in the literature and a good agreement is achieved with experimentally measured data. The influence of the nucleation site density on the boiling curve characteristic is confirmed. In addition, the influence of the heat flux intensity on the spatial effects of vapour generation and two-phase flow are shown, such as the increase of the swell level position and the reduced wetting of the heated wall surface by the heat flux increase.
PB  - Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd
T2  - Thermal Science
T1  - Numerical investigation of nucleate pool boiling heat transfer
EP  - S1312
SP  - S1301
VL  - 20
DO  - 10.2298/TSCI160404276S
ER  - 

@article{
author = "Stojanović, Andrijana and Stevanović, Vladimir and Petrović, Milan M. and Živković, Dragoljub",
year = "2016",
abstract = "Multi-dimensional numerical simulation of the atmospheric saturated pool boiling is performed. The applied modelling and numerical methods enable a full representation of the liquid and vapour two-phase mixture behaviour on the heated surface, with included prediction of the swell level and heated wall temperature field. In this way the integral behaviour of nucleate pool boiling is simulated. The micro conditions of bubble generation at the heated wall surface are modelled by the bubble nucleation site density, the liquid wetting contact angle and the bubble grow time. The bubble nucleation sites are randomly located within zones of equal size, where the number of zones equals the nucleation site density. The conjugate heat transfer from the heated wall to the liquid is taken into account in wetted heated wall areas around bubble nucleation sites. The boiling curve relation between the heat flux and the heated wall surface temperature in excess of the saturation temperature is predicted for the pool boiling conditions reported in the literature and a good agreement is achieved with experimentally measured data. The influence of the nucleation site density on the boiling curve characteristic is confirmed. In addition, the influence of the heat flux intensity on the spatial effects of vapour generation and two-phase flow are shown, such as the increase of the swell level position and the reduced wetting of the heated wall surface by the heat flux increase.",
publisher = "Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd",
journal = "Thermal Science",
title = "Numerical investigation of nucleate pool boiling heat transfer",
pages = "S1312-S1301",
volume = "20",
doi = "10.2298/TSCI160404276S"
}

Stojanović, A., Stevanović, V., Petrović, M. M.,& Živković, D.. (2016). Numerical investigation of nucleate pool boiling heat transfer. in Thermal Science
Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd., 20, S1301-S1312.
https://doi.org/10.2298/TSCI160404276S

Stojanović A, Stevanović V, Petrović MM, Živković D. Numerical investigation of nucleate pool boiling heat transfer. in Thermal Science. 2016;20:S1301-S1312.
doi:10.2298/TSCI160404276S .

Stojanović, Andrijana, Stevanović, Vladimir, Petrović, Milan M., Živković, Dragoljub, "Numerical investigation of nucleate pool boiling heat transfer" in Thermal Science, 20 (2016):S1301-S1312,
https://doi.org/10.2298/TSCI160404276S . .

TY  - JOUR
AU  - Stojanović, Andrijana
AU  - Stevanović, Vladimir
AU  - Petrović, Milan M.
AU  - Živković, Dragoljub
AU  - Stanković, Branislav
PY  - 2016
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/2259
AB  - U ovom radu je izvršena trodimenzionalna numerička simulacija atmosferskog, zasićenog ključanja u velikoj zapremini. Primenjeni matematički model i numerička metoda omogućavaju potpuni prikaz ponašanja dvofazne mešavine na grejnoj površini kao i predviđanje slobodnog nivoa tečnosti. Ovde prikazano trodimenzionalno istraživanje je sprovedeno kako bi se uzela u obzir konvektivna razmena toplote na grejnoj površini kao i prostorni efekti generacije pare i dvofaznog toka, kao što su disprzija faza u dvofaznoj mešavini. Predstavljeni su rezultati simulacije nakon kratkog vremenskog perioda od početka zagrevanja i formiranja mehurova na grejnoj površini. Prikazani su popunjenost grejne površine vodom i parcijalna okvašenost površine za niže vrednosti toplotnog fluksa. Diskutovan je uticaj gustine nukleacije i vremena zadržavanja mehurova na grejnom zidu na dinamiku ključanja. Takođe je proučen uticaj intenziteta toplotnog fluksa na dinamiku ključanja u velikoj zapremini. Primenjeni numerički metod i matematički model je pokazao ispravnost, omogućavajući stabilan proračun za širok opseg primenjenih parametara pri modeliranju.
AB  - In this paper three-dimensional numerical simulation of the atmospheric saturated pool boiling was performed. The applied modelling and numerical methods enable full representation of the two-phase mixture behaviour on the heating surface with the inclusion of the swell level prediction. The three-dimensional investigation presented here was performed in order to take into account a convective heat transfer on the heated surface, as well as spatial effects of the vapour generation and a two phase flow such as phase dispersion within the two-phase mixture. The results are presented for a short period of time after the initiation of the heat supply and vapor generation on the heating surface. The replenishment of the heating surface with water and partial surface wetting for lower heat fluxes is shown. The influence of the density of nucleation sites and the bubble residence time on the wall on the pool boiling dynamics is discussed. Also, the influence of the heat flux intensity on the pool boiling dynamics is investigated. The applied numerical and modelling method showed robustness by allowing stable calculations for wide ranges of applied modelling boiling parameters.
PB  - Univerzitet u Nišu - Tehnološki fakultet, Leskovac
T2  - Advanced Technologies
T1  - Numeričko proučavanje procesa razmene toplote pri ključanju u velikoj zapremini
T1  - Numerical study of heat transfer during nucleate pool boiling
EP  - 80
IS  - 1
SP  - 73
VL  - 5
DO  - 10.5937/savteh1601073S
ER  - 

@article{
author = "Stojanović, Andrijana and Stevanović, Vladimir and Petrović, Milan M. and Živković, Dragoljub and Stanković, Branislav",
year = "2016",
abstract = "U ovom radu je izvršena trodimenzionalna numerička simulacija atmosferskog, zasićenog ključanja u velikoj zapremini. Primenjeni matematički model i numerička metoda omogućavaju potpuni prikaz ponašanja dvofazne mešavine na grejnoj površini kao i predviđanje slobodnog nivoa tečnosti. Ovde prikazano trodimenzionalno istraživanje je sprovedeno kako bi se uzela u obzir konvektivna razmena toplote na grejnoj površini kao i prostorni efekti generacije pare i dvofaznog toka, kao što su disprzija faza u dvofaznoj mešavini. Predstavljeni su rezultati simulacije nakon kratkog vremenskog perioda od početka zagrevanja i formiranja mehurova na grejnoj površini. Prikazani su popunjenost grejne površine vodom i parcijalna okvašenost površine za niže vrednosti toplotnog fluksa. Diskutovan je uticaj gustine nukleacije i vremena zadržavanja mehurova na grejnom zidu na dinamiku ključanja. Takođe je proučen uticaj intenziteta toplotnog fluksa na dinamiku ključanja u velikoj zapremini. Primenjeni numerički metod i matematički model je pokazao ispravnost, omogućavajući stabilan proračun za širok opseg primenjenih parametara pri modeliranju., In this paper three-dimensional numerical simulation of the atmospheric saturated pool boiling was performed. The applied modelling and numerical methods enable full representation of the two-phase mixture behaviour on the heating surface with the inclusion of the swell level prediction. The three-dimensional investigation presented here was performed in order to take into account a convective heat transfer on the heated surface, as well as spatial effects of the vapour generation and a two phase flow such as phase dispersion within the two-phase mixture. The results are presented for a short period of time after the initiation of the heat supply and vapor generation on the heating surface. The replenishment of the heating surface with water and partial surface wetting for lower heat fluxes is shown. The influence of the density of nucleation sites and the bubble residence time on the wall on the pool boiling dynamics is discussed. Also, the influence of the heat flux intensity on the pool boiling dynamics is investigated. The applied numerical and modelling method showed robustness by allowing stable calculations for wide ranges of applied modelling boiling parameters.",
publisher = "Univerzitet u Nišu - Tehnološki fakultet, Leskovac",
journal = "Advanced Technologies",
title = "Numeričko proučavanje procesa razmene toplote pri ključanju u velikoj zapremini, Numerical study of heat transfer during nucleate pool boiling",
pages = "80-73",
number = "1",
volume = "5",
doi = "10.5937/savteh1601073S"
}

Stojanović, A., Stevanović, V., Petrović, M. M., Živković, D.,& Stanković, B.. (2016). Numeričko proučavanje procesa razmene toplote pri ključanju u velikoj zapremini. in Advanced Technologies
Univerzitet u Nišu - Tehnološki fakultet, Leskovac., 5(1), 73-80.
https://doi.org/10.5937/savteh1601073S

Stojanović A, Stevanović V, Petrović MM, Živković D, Stanković B. Numeričko proučavanje procesa razmene toplote pri ključanju u velikoj zapremini. in Advanced Technologies. 2016;5(1):73-80.
doi:10.5937/savteh1601073S .

Stojanović, Andrijana, Stevanović, Vladimir, Petrović, Milan M., Živković, Dragoljub, Stanković, Branislav, "Numeričko proučavanje procesa razmene toplote pri ključanju u velikoj zapremini" in Advanced Technologies, 5, no. 1 (2016):73-80,
https://doi.org/10.5937/savteh1601073S . .

TY  - JOUR
AU  - Milićević, Aleksandar
AU  - Tomanović, Ivan
AU  - Stanković, Branislav
AU  - Belošević, Srđan V.
AU  - Tucaković, Dragan
PY  - 2016
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/2268
AB  - U radu su dati osnovni izrazi u krivolinijskim koordinatama, a zatim su u nastavku rada redom izvedene u cilindričnim koordinatama: jednačina entalpije (temperature), Navije-Stoksove i Rejnoldsove jednačine turbulentnog strujanja, transportne jednačine Rejnoldsovih (turbulentnih) napona, transportna jednačina kinetičke energije turbulencije i na kraju transportna jednačina brzine disipacije kinetičke energije turbulencije. Ovim radom je pokušano popuniti prazninu u našoj i stranoj literaturi u oblasti turbulentnih transportnih procesa u vezi sa izvođenjem turbulentnih transportnih jednačina u cilindričnim koordinatama. Ovaj rad može biti od koristi studentima diplomskih i doktorskih studija, kao i inženjerima i istraživačima u praksi pri rešavanju inženjerskih problema i modeliranju turbulentnih strujanja koja su tako česta u termotehnici i energetici.
AB  - Paper initially presents the elementary expressions in curvilinear coordinates, and afterwards, the following equations have been derived in cylindrical coordinates, respectively: equation of enthalpy (temperature), Navier-Stokes and Reynolds equation for turbulent flow, transport equations of Reynolds (turbulent) stresses, transport equation of kinetic energy of turbulence, and the transport equation of dissipation rate of turbulent kinetic energy. This paper has been attempted to fill the gap in our and foreign literature with respect to derivation of turbulent transport equations in cylindrical coordinates. This work may be useful to students of graduate and doctoral studies as well as engineers and researchers in practice in solving engineering problems and modeling of turbulent flows, commonly found in thermal engineering and energy.
PB  - Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd i Društvo termičara Srbije, Beograd
T2  - Termotehnika
T1  - Izvođenje transportnih jednačina trodimenzionalnog neizotermnog turbulentnog strujanja u cilindričnim koordinatama
T1  - Derivation of transport equations for three-dimensional non-isothermal turbulent flow in cylindrical coordinates
EP  - 24
IS  - 1
SP  - 1
VL  - 42
DO  - 10.5937/termoteh1601001M
ER  - 

@article{
author = "Milićević, Aleksandar and Tomanović, Ivan and Stanković, Branislav and Belošević, Srđan V. and Tucaković, Dragan",
year = "2016",
abstract = "U radu su dati osnovni izrazi u krivolinijskim koordinatama, a zatim su u nastavku rada redom izvedene u cilindričnim koordinatama: jednačina entalpije (temperature), Navije-Stoksove i Rejnoldsove jednačine turbulentnog strujanja, transportne jednačine Rejnoldsovih (turbulentnih) napona, transportna jednačina kinetičke energije turbulencije i na kraju transportna jednačina brzine disipacije kinetičke energije turbulencije. Ovim radom je pokušano popuniti prazninu u našoj i stranoj literaturi u oblasti turbulentnih transportnih procesa u vezi sa izvođenjem turbulentnih transportnih jednačina u cilindričnim koordinatama. Ovaj rad može biti od koristi studentima diplomskih i doktorskih studija, kao i inženjerima i istraživačima u praksi pri rešavanju inženjerskih problema i modeliranju turbulentnih strujanja koja su tako česta u termotehnici i energetici., Paper initially presents the elementary expressions in curvilinear coordinates, and afterwards, the following equations have been derived in cylindrical coordinates, respectively: equation of enthalpy (temperature), Navier-Stokes and Reynolds equation for turbulent flow, transport equations of Reynolds (turbulent) stresses, transport equation of kinetic energy of turbulence, and the transport equation of dissipation rate of turbulent kinetic energy. This paper has been attempted to fill the gap in our and foreign literature with respect to derivation of turbulent transport equations in cylindrical coordinates. This work may be useful to students of graduate and doctoral studies as well as engineers and researchers in practice in solving engineering problems and modeling of turbulent flows, commonly found in thermal engineering and energy.",
publisher = "Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd i Društvo termičara Srbije, Beograd",
journal = "Termotehnika",
title = "Izvođenje transportnih jednačina trodimenzionalnog neizotermnog turbulentnog strujanja u cilindričnim koordinatama, Derivation of transport equations for three-dimensional non-isothermal turbulent flow in cylindrical coordinates",
pages = "24-1",
number = "1",
volume = "42",
doi = "10.5937/termoteh1601001M"
}

Milićević, A., Tomanović, I., Stanković, B., Belošević, S. V.,& Tucaković, D.. (2016). Izvođenje transportnih jednačina trodimenzionalnog neizotermnog turbulentnog strujanja u cilindričnim koordinatama. in Termotehnika
Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd i Društvo termičara Srbije, Beograd., 42(1), 1-24.
https://doi.org/10.5937/termoteh1601001M

Milićević A, Tomanović I, Stanković B, Belošević SV, Tucaković D. Izvođenje transportnih jednačina trodimenzionalnog neizotermnog turbulentnog strujanja u cilindričnim koordinatama. in Termotehnika. 2016;42(1):1-24.
doi:10.5937/termoteh1601001M .

Milićević, Aleksandar, Tomanović, Ivan, Stanković, Branislav, Belošević, Srđan V., Tucaković, Dragan, "Izvođenje transportnih jednačina trodimenzionalnog neizotermnog turbulentnog strujanja u cilindričnim koordinatama" in Termotehnika, 42, no. 1 (2016):1-24,
https://doi.org/10.5937/termoteh1601001M . .

TY  - THES
AU  - Stupar, Goran
PY  - 2016
UR  - http://eteze.bg.ac.rs/application/showtheses?thesesId=3439
UR  - https://nardus.mpn.gov.rs/handle/123456789/6073
UR  - https://fedorabg.bg.ac.rs/fedora/get/o:12008/bdef:Content/download
UR  - https://fedorabg.bg.ac.rs/fedora/get/o:12047/bdef:Content/download
UR  - http://vbs.rs/scripts/cobiss?command=DISPLAY&base=70036&RID=514701219
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/38
AB  - Predmet istraživanja predstavlja razvoj proračunskog sistema koji obuhvata diferencijalni matematički model procesa u ložištu i integralni matematički model rada postrojenja sa međusobnim interakcijama, a sve u cilju procene rada energetskog parnog kotla u celini. Ovakav sistem omogućio je širi prikaz svih relevantnih stanja struja koje učestvuju u procesima energetskog parnog kotla na ugljeni prah. Potreba za ovakvim načinom istraživanja proistekla je iz činjenice da nije moguće posmatrati deo složenog postrojenja a pritom zanemariti njegovo sadejstvo sa ostatkom sistema u kome on funkcioniše, odnosno sa kojim čini celinu. Razvijeni metod je primenljiv za inverzne probleme procene radnog stanja kod postojećih postrojenja, kao i za one direktne, kako modifikacije postojećih tako i razvoja novih energetskih objekata. U sklopu razvoja proračunskog sistema predviđeno je definisanje matematičkog modela sagorevanja čestica ugljenog praha, strujanja i zračenja produkata sagorevanja, kao i podmodela formiranja i destrukcije azotnih oksida koji u korelaciji sa integralnim termičkim i aerodinamičkim proračunima omogućavaju formiranje sveobuhvatnog opisa pogonskog režima energetskog parnog kotla. Razvoj ovakvog proračunskog modela je značajan radi pouzdanog predviđanja performansi energetskih parnih kotlova. Kvalitet rada samog kotla koji je moguće proceniti primenom razvijenog sistema proračuna može se podeliti u grupe efektivnog, efikasnog, sigurnog i ekološki prihvatljivog rada. Ovakva analiza naročito je bitna s obzirom da rad kotla može imati presudan uticaj na raspoloživost i ekonomičnost celokupnog energetskog sistema čija je on komponenta...
AB  - The subject of research is the development of a calculation system comprising a differential mathematical model of processes within the furnace and an integral mathematical operation model of plant with mutual interactions, with the aim of overall utility steam boiler operation assessment. Such system enabled a wider overview of all relevant flows involved in the processes of the utility steam boiler operating on pulverized coal. The need for such research originated from the fact that it is not possible to observe a part of a complex plant and disregard its joint action with the rest of the system, with which it forms a whole. The developed method is applicable to inverse problems of operation mode assessment at existing plants, as well as to direct problems both for modification of existing and development of new utility objects. Within the development of the programme system, it has been anticipated to define a mathematical model of pulverized coal particles combustion, flow and radiation of two-phase gas-particles mixture, as well as a submodel of nitrogen oxides formation and destruction, which, in correlation with integral thermal and aerodynamic calculations, allow the formation of a comprehensive description of the utility steam boiler operating regime. The development of such a calculation model is significant in the aim of reliable prediction of utility steam boilers’ performances. The operation quality of boilers that may be assessed by using the developed calculation system can be divided into groups of effective, efficient, safe and ecologically acceptable work. Such analysis is of particular importance due to the fact that boiler operation can have a decisive impact on the availability and cost of the entire energy conversion system of which it is a component...
PB  - Univerzitet u Beogradu, Mašinski fakultet
T1  - Modeliranje procesa u energetskom parnom kotlu sa višestepenim dovođenjem vazduha po visini ložišta
T1  - Modeling of processes in utility steam boiler with air staging
UR  - https://hdl.handle.net/21.15107/rcub_nardus_6073
ER  - 

@phdthesis{
author = "Stupar, Goran",
year = "2016",
abstract = "Predmet istraživanja predstavlja razvoj proračunskog sistema koji obuhvata diferencijalni matematički model procesa u ložištu i integralni matematički model rada postrojenja sa međusobnim interakcijama, a sve u cilju procene rada energetskog parnog kotla u celini. Ovakav sistem omogućio je širi prikaz svih relevantnih stanja struja koje učestvuju u procesima energetskog parnog kotla na ugljeni prah. Potreba za ovakvim načinom istraživanja proistekla je iz činjenice da nije moguće posmatrati deo složenog postrojenja a pritom zanemariti njegovo sadejstvo sa ostatkom sistema u kome on funkcioniše, odnosno sa kojim čini celinu. Razvijeni metod je primenljiv za inverzne probleme procene radnog stanja kod postojećih postrojenja, kao i za one direktne, kako modifikacije postojećih tako i razvoja novih energetskih objekata. U sklopu razvoja proračunskog sistema predviđeno je definisanje matematičkog modela sagorevanja čestica ugljenog praha, strujanja i zračenja produkata sagorevanja, kao i podmodela formiranja i destrukcije azotnih oksida koji u korelaciji sa integralnim termičkim i aerodinamičkim proračunima omogućavaju formiranje sveobuhvatnog opisa pogonskog režima energetskog parnog kotla. Razvoj ovakvog proračunskog modela je značajan radi pouzdanog predviđanja performansi energetskih parnih kotlova. Kvalitet rada samog kotla koji je moguće proceniti primenom razvijenog sistema proračuna može se podeliti u grupe efektivnog, efikasnog, sigurnog i ekološki prihvatljivog rada. Ovakva analiza naročito je bitna s obzirom da rad kotla može imati presudan uticaj na raspoloživost i ekonomičnost celokupnog energetskog sistema čija je on komponenta..., The subject of research is the development of a calculation system comprising a differential mathematical model of processes within the furnace and an integral mathematical operation model of plant with mutual interactions, with the aim of overall utility steam boiler operation assessment. Such system enabled a wider overview of all relevant flows involved in the processes of the utility steam boiler operating on pulverized coal. The need for such research originated from the fact that it is not possible to observe a part of a complex plant and disregard its joint action with the rest of the system, with which it forms a whole. The developed method is applicable to inverse problems of operation mode assessment at existing plants, as well as to direct problems both for modification of existing and development of new utility objects. Within the development of the programme system, it has been anticipated to define a mathematical model of pulverized coal particles combustion, flow and radiation of two-phase gas-particles mixture, as well as a submodel of nitrogen oxides formation and destruction, which, in correlation with integral thermal and aerodynamic calculations, allow the formation of a comprehensive description of the utility steam boiler operating regime. The development of such a calculation model is significant in the aim of reliable prediction of utility steam boilers’ performances. The operation quality of boilers that may be assessed by using the developed calculation system can be divided into groups of effective, efficient, safe and ecologically acceptable work. Such analysis is of particular importance due to the fact that boiler operation can have a decisive impact on the availability and cost of the entire energy conversion system of which it is a component...",
publisher = "Univerzitet u Beogradu, Mašinski fakultet",
title = "Modeliranje procesa u energetskom parnom kotlu sa višestepenim dovođenjem vazduha po visini ložišta, Modeling of processes in utility steam boiler with air staging",
url = "https://hdl.handle.net/21.15107/rcub_nardus_6073"
}

Stupar, G.. (2016). Modeliranje procesa u energetskom parnom kotlu sa višestepenim dovođenjem vazduha po visini ložišta. 
Univerzitet u Beogradu, Mašinski fakultet..
https://hdl.handle.net/21.15107/rcub_nardus_6073

Stupar G. Modeliranje procesa u energetskom parnom kotlu sa višestepenim dovođenjem vazduha po visini ložišta. 2016;.
https://hdl.handle.net/21.15107/rcub_nardus_6073 .

Stupar, Goran, "Modeliranje procesa u energetskom parnom kotlu sa višestepenim dovođenjem vazduha po visini ložišta" (2016),
https://hdl.handle.net/21.15107/rcub_nardus_6073 .

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  - Crnomarković, Nenad
AU  - Milicević, Aleksandar
AU  - Tucaković, Dragan
PY  - 2016
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3938
AB  - Important tasks during pulverized coal-fired utility boiler exploitation are efficient utilization of variable quality fuels, operation in a wide range of loads and emission reduction of pollutants, like oxides of nitrogen and sulfur. Combustion process modifications for NOx control and the furnace sorbent injection for SO2 control are cost-effective clean coal technologies. For optimization of boiler operation mathematical prediction is regularly used and the need for modeling is most apparent in complex flows, such as turbulent reactive flows in coal-fired furnaces. Simulation of processes in a utility boiler pulverized lignite-fired furnace was performed by an in-house developed numerical code. The code is a promising numerical tool to be used also by engineering staff dealing with the process analysis in boiler units. A broad range of operating conditions was examined, such as different boiler loads, fuel and preheated air distribution over the burners and the burner tiers, grinding fineness of coal, cold air ingress and recirculation of flue gases from the boiler exit. Ash deposit on the screen walls, affecting the heat exchange inside the furnace, was considered as well. Simulations suggested optimal combustion modifications providing NOx emission reduction, with the flame geometry improvement, as well. SO2 reduction by injection of pulverized Ca-based sorbents into the furnace was also analyzed. Models of the sorbent particle calcination, sintering and sulfation reactions were optimized and implemented within the numerical code. Numerical experiments considered different operation parameters, such as Ca/S molar ratio, sorbent particle size and dispersion, local gas temperature in different injection zones and the particle residence time. A proper distribution of finely ground sorbent particles could be expected to provide an efficient absorption of SO2. With respect to the boiler thermal calculations, the facility should be controlled within narrow limits of operation parameters due to often contradictory requirements with respect to emission reduction and the boiler unit efficiency with safe operation of superheaters. A number of influencing parameters require such a complex approach to evaluate alternative solutions and enable efficient, low emission and flexible operation of power plant boiler units.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Applied Thermal Engineering
T1  - Numerical study of pulverized coal-fired utility boiler over a wide range of operating conditions for in-furnace SO2/NOx reduction
EP  - 669
SP  - 657
VL  - 94
DO  - 10.1016/j.applthermaleng.2015.10.162
ER  - 

@article{
author = "Belošević, Srđan V. and Tomanović, Ivan and Crnomarković, Nenad and Milicević, Aleksandar and Tucaković, Dragan",
year = "2016",
abstract = "Important tasks during pulverized coal-fired utility boiler exploitation are efficient utilization of variable quality fuels, operation in a wide range of loads and emission reduction of pollutants, like oxides of nitrogen and sulfur. Combustion process modifications for NOx control and the furnace sorbent injection for SO2 control are cost-effective clean coal technologies. For optimization of boiler operation mathematical prediction is regularly used and the need for modeling is most apparent in complex flows, such as turbulent reactive flows in coal-fired furnaces. Simulation of processes in a utility boiler pulverized lignite-fired furnace was performed by an in-house developed numerical code. The code is a promising numerical tool to be used also by engineering staff dealing with the process analysis in boiler units. A broad range of operating conditions was examined, such as different boiler loads, fuel and preheated air distribution over the burners and the burner tiers, grinding fineness of coal, cold air ingress and recirculation of flue gases from the boiler exit. Ash deposit on the screen walls, affecting the heat exchange inside the furnace, was considered as well. Simulations suggested optimal combustion modifications providing NOx emission reduction, with the flame geometry improvement, as well. SO2 reduction by injection of pulverized Ca-based sorbents into the furnace was also analyzed. Models of the sorbent particle calcination, sintering and sulfation reactions were optimized and implemented within the numerical code. Numerical experiments considered different operation parameters, such as Ca/S molar ratio, sorbent particle size and dispersion, local gas temperature in different injection zones and the particle residence time. A proper distribution of finely ground sorbent particles could be expected to provide an efficient absorption of SO2. With respect to the boiler thermal calculations, the facility should be controlled within narrow limits of operation parameters due to often contradictory requirements with respect to emission reduction and the boiler unit efficiency with safe operation of superheaters. A number of influencing parameters require such a complex approach to evaluate alternative solutions and enable efficient, low emission and flexible operation of power plant boiler units.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Applied Thermal Engineering",
title = "Numerical study of pulverized coal-fired utility boiler over a wide range of operating conditions for in-furnace SO2/NOx reduction",
pages = "669-657",
volume = "94",
doi = "10.1016/j.applthermaleng.2015.10.162"
}

Belošević, S. V., Tomanović, I., Crnomarković, N., Milicević, A.,& Tucaković, D.. (2016). Numerical study of pulverized coal-fired utility boiler over a wide range of operating conditions for in-furnace SO2/NOx reduction. in Applied Thermal Engineering
Pergamon-Elsevier Science Ltd, Oxford., 94, 657-669.
https://doi.org/10.1016/j.applthermaleng.2015.10.162

Belošević SV, Tomanović I, Crnomarković N, Milicević A, Tucaković D. Numerical study of pulverized coal-fired utility boiler over a wide range of operating conditions for in-furnace SO2/NOx reduction. in Applied Thermal Engineering. 2016;94:657-669.
doi:10.1016/j.applthermaleng.2015.10.162 .

Belošević, Srđan V., Tomanović, Ivan, Crnomarković, Nenad, Milicević, Aleksandar, Tucaković, Dragan, "Numerical study of pulverized coal-fired utility boiler over a wide range of operating conditions for in-furnace SO2/NOx reduction" in Applied Thermal Engineering, 94 (2016):657-669,
https://doi.org/10.1016/j.applthermaleng.2015.10.162 . .

TY  - JOUR
AU  - Belošević, Srđan V.
AU  - Tomanović, Ivan
AU  - Crnomarković, Nenad
AU  - Milicević, Aleksandar
AU  - Tucaković, Dragan
PY  - 2016
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/2446
AB  - Important tasks during pulverized coal-fired utility boiler exploitation are efficient utilization of variable quality fuels, operation in a wide range of loads and emission reduction of pollutants, like oxides of nitrogen and sulfur. Combustion process modifications for NOx control and the furnace sorbent injection for SO2 control are cost-effective clean coal technologies. For optimization of boiler operation mathematical prediction is regularly used and the need for modeling is most apparent in complex flows, such as turbulent reactive flows in coal-fired furnaces. Simulation of processes in a utility boiler pulverized lignite-fired furnace was performed by an in-house developed numerical code. The code is a promising numerical tool to be used also by engineering staff dealing with the process analysis in boiler units. A broad range of operating conditions was examined, such as different boiler loads, fuel and preheated air distribution over the burners and the burner tiers, grinding fineness of coal, cold air ingress and recirculation of flue gases from the boiler exit. Ash deposit on the screen walls, affecting the heat exchange inside the furnace, was considered as well. Simulations suggested optimal combustion modifications providing NOx emission reduction, with the flame geometry improvement, as well. SO2 reduction by injection of pulverized Ca-based sorbents into the furnace was also analyzed. Models of the sorbent particle calcination, sintering and sulfation reactions were optimized and implemented within the numerical code. Numerical experiments considered different operation parameters, such as Ca/S molar ratio, sorbent particle size and dispersion, local gas temperature in different injection zones and the particle residence time. A proper distribution of finely ground sorbent particles could be expected to provide an efficient absorption of SO2. With respect to the boiler thermal calculations, the facility should be controlled within narrow limits of operation parameters due to often contradictory requirements with respect to emission reduction and the boiler unit efficiency with safe operation of superheaters. A number of influencing parameters require such a complex approach to evaluate alternative solutions and enable efficient, low emission and flexible operation of power plant boiler units.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Applied Thermal Engineering
T1  - Numerical study of pulverized coal-fired utility boiler over a wide range of operating conditions for in-furnace SO2/NOx reduction
EP  - 669
SP  - 657
VL  - 94
DO  - 10.1016/j.applthermaleng.2015.10.162
ER  - 

@article{
author = "Belošević, Srđan V. and Tomanović, Ivan and Crnomarković, Nenad and Milicević, Aleksandar and Tucaković, Dragan",
year = "2016",
abstract = "Important tasks during pulverized coal-fired utility boiler exploitation are efficient utilization of variable quality fuels, operation in a wide range of loads and emission reduction of pollutants, like oxides of nitrogen and sulfur. Combustion process modifications for NOx control and the furnace sorbent injection for SO2 control are cost-effective clean coal technologies. For optimization of boiler operation mathematical prediction is regularly used and the need for modeling is most apparent in complex flows, such as turbulent reactive flows in coal-fired furnaces. Simulation of processes in a utility boiler pulverized lignite-fired furnace was performed by an in-house developed numerical code. The code is a promising numerical tool to be used also by engineering staff dealing with the process analysis in boiler units. A broad range of operating conditions was examined, such as different boiler loads, fuel and preheated air distribution over the burners and the burner tiers, grinding fineness of coal, cold air ingress and recirculation of flue gases from the boiler exit. Ash deposit on the screen walls, affecting the heat exchange inside the furnace, was considered as well. Simulations suggested optimal combustion modifications providing NOx emission reduction, with the flame geometry improvement, as well. SO2 reduction by injection of pulverized Ca-based sorbents into the furnace was also analyzed. Models of the sorbent particle calcination, sintering and sulfation reactions were optimized and implemented within the numerical code. Numerical experiments considered different operation parameters, such as Ca/S molar ratio, sorbent particle size and dispersion, local gas temperature in different injection zones and the particle residence time. A proper distribution of finely ground sorbent particles could be expected to provide an efficient absorption of SO2. With respect to the boiler thermal calculations, the facility should be controlled within narrow limits of operation parameters due to often contradictory requirements with respect to emission reduction and the boiler unit efficiency with safe operation of superheaters. A number of influencing parameters require such a complex approach to evaluate alternative solutions and enable efficient, low emission and flexible operation of power plant boiler units.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Applied Thermal Engineering",
title = "Numerical study of pulverized coal-fired utility boiler over a wide range of operating conditions for in-furnace SO2/NOx reduction",
pages = "669-657",
volume = "94",
doi = "10.1016/j.applthermaleng.2015.10.162"
}

Belošević, S. V., Tomanović, I., Crnomarković, N., Milicević, A.,& Tucaković, D.. (2016). Numerical study of pulverized coal-fired utility boiler over a wide range of operating conditions for in-furnace SO2/NOx reduction. in Applied Thermal Engineering
Pergamon-Elsevier Science Ltd, Oxford., 94, 657-669.
https://doi.org/10.1016/j.applthermaleng.2015.10.162

Belošević SV, Tomanović I, Crnomarković N, Milicević A, Tucaković D. Numerical study of pulverized coal-fired utility boiler over a wide range of operating conditions for in-furnace SO2/NOx reduction. in Applied Thermal Engineering. 2016;94:657-669.
doi:10.1016/j.applthermaleng.2015.10.162 .

Belošević, Srđan V., Tomanović, Ivan, Crnomarković, Nenad, Milicević, Aleksandar, Tucaković, Dragan, "Numerical study of pulverized coal-fired utility boiler over a wide range of operating conditions for in-furnace SO2/NOx reduction" in Applied Thermal Engineering, 94 (2016):657-669,
https://doi.org/10.1016/j.applthermaleng.2015.10.162 . .

TY  - JOUR
AU  - Belošević, Srđan V.
AU  - Tomanović, Ivan D.
AU  - Crnomarković, Nenad
AU  - Milićević, Aleksandar
AU  - Tucaković, Dragan
PY  - 2016
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/2434
AB  - Pulverized coal-fired power plants should provide higher efficiency of energy conversion, flexibility in terms of boiler loads and fuel characteristics and emission reduction of pollutants like nitrogen oxides. Modification of combustion process is a cost-effective technology for NOx control. For optimization of complex processes, such as turbulent reactive flow in coal-fired furnaces, mathematical modeling is regularly used The NOx emission reduction by combustion modifications in the 350 MWe Kostolac B boiler furnace, tangentially fired by pulverized Serbian lignite, is investigated in the paper. Numerical experiments were done by an in-house developed 3-D differential comprehensive combustion code, with fuel- and thermal-NO formation/destruction reactions model. The code was developed to be easily used by engineering staff for process analysis in boiler units. A broad range of operating conditions was examined, such as fuel and preheated air distribution over the burners and tiers, operation mode of the burners, grinding fineness and quality of coal, boiler loads, cold air ingress, recirculation of flue gases, water-walls ash deposition and combined effect of different parameters. The predictions show that the NOx emission reduction of up to 30% can be achieved by a proper combustion organization in the case-study furnace, with the flame position control. Impact of combustion modifications on the boiler operation was evaluated by the boiler thermal calculations suggesting that the facility was to be controlled within narrow limits of operation parameters. Such a complex approach to pollutants control enables evaluating alternative solutions to achieve efficient and low emission operation of utility boiler units.
PB  - Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd
T2  - Thermal Science
T1  - Modeling and optimization of processes for clean and efficient pulverized coal combustion in utility boilers
EP  - S196
SP  - S183
VL  - 20
DO  - 10.2298/TSCI150604223B
ER  - 

@article{
author = "Belošević, Srđan V. and Tomanović, Ivan D. and Crnomarković, Nenad and Milićević, Aleksandar and Tucaković, Dragan",
year = "2016",
abstract = "Pulverized coal-fired power plants should provide higher efficiency of energy conversion, flexibility in terms of boiler loads and fuel characteristics and emission reduction of pollutants like nitrogen oxides. Modification of combustion process is a cost-effective technology for NOx control. For optimization of complex processes, such as turbulent reactive flow in coal-fired furnaces, mathematical modeling is regularly used The NOx emission reduction by combustion modifications in the 350 MWe Kostolac B boiler furnace, tangentially fired by pulverized Serbian lignite, is investigated in the paper. Numerical experiments were done by an in-house developed 3-D differential comprehensive combustion code, with fuel- and thermal-NO formation/destruction reactions model. The code was developed to be easily used by engineering staff for process analysis in boiler units. A broad range of operating conditions was examined, such as fuel and preheated air distribution over the burners and tiers, operation mode of the burners, grinding fineness and quality of coal, boiler loads, cold air ingress, recirculation of flue gases, water-walls ash deposition and combined effect of different parameters. The predictions show that the NOx emission reduction of up to 30% can be achieved by a proper combustion organization in the case-study furnace, with the flame position control. Impact of combustion modifications on the boiler operation was evaluated by the boiler thermal calculations suggesting that the facility was to be controlled within narrow limits of operation parameters. Such a complex approach to pollutants control enables evaluating alternative solutions to achieve efficient and low emission operation of utility boiler units.",
publisher = "Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd",
journal = "Thermal Science",
title = "Modeling and optimization of processes for clean and efficient pulverized coal combustion in utility boilers",
pages = "S196-S183",
volume = "20",
doi = "10.2298/TSCI150604223B"
}

Belošević, S. V., Tomanović, I. D., Crnomarković, N., Milićević, A.,& Tucaković, D.. (2016). Modeling and optimization of processes for clean and efficient pulverized coal combustion in utility boilers. in Thermal Science
Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd., 20, S183-S196.
https://doi.org/10.2298/TSCI150604223B

Belošević SV, Tomanović ID, Crnomarković N, Milićević A, Tucaković D. Modeling and optimization of processes for clean and efficient pulverized coal combustion in utility boilers. in Thermal Science. 2016;20:S183-S196.
doi:10.2298/TSCI150604223B .

Belošević, Srđan V., Tomanović, Ivan D., Crnomarković, Nenad, Milićević, Aleksandar, Tucaković, Dragan, "Modeling and optimization of processes for clean and efficient pulverized coal combustion in utility boilers" in Thermal Science, 20 (2016):S183-S196,
https://doi.org/10.2298/TSCI150604223B . .

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  - Tomanović, Ivan
AU  - Belošević, Srđan V.
AU  - Milicević, Aleksandar
AU  - Tucaković, Dragan
PY  - 2015
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/2101
AB  - A mathematical model of calcium sorbent reactions for the simulation of sulfur dioxide reduction from pulverized coal combustion flue gasses was developed, implemented within a numerical code and validated against available measurements under controlled conditions. The model attempts to resemble closely the reactions of calcination, sintering and sulfation occurring during the motion of the sorbent particles in the furnace. The sulfation was based on the partially sintered spheres model (PSSM), coupled with simulated particle calcination and sintering. The complex geometry of the particle was taken into account, with the assumption that it consists of spherical grains in contact with each other. Numerical simulations of drop down tube reactors were performed for both CaCO3 and Ca(OH)(2) sorbent particles and results were compared with experimental data available from the literature. The model of the sorbent reactions will be further used for simulations of desulfurization reactions in turbulent gas-particle flow under coal combustion conditions.
PB  - Srpsko hemijsko društvo, Beograd
T2  - Journal of The Serbian Chemical Society
T1  - Modeling of the reactions of a calcium-based sorbent with sulfur dioxide
EP  - 562
IS  - 4
SP  - 549
VL  - 80
DO  - 10.2298/JSC140903115T
ER  - 

@article{
author = "Tomanović, Ivan and Belošević, Srđan V. and Milicević, Aleksandar and Tucaković, Dragan",
year = "2015",
abstract = "A mathematical model of calcium sorbent reactions for the simulation of sulfur dioxide reduction from pulverized coal combustion flue gasses was developed, implemented within a numerical code and validated against available measurements under controlled conditions. The model attempts to resemble closely the reactions of calcination, sintering and sulfation occurring during the motion of the sorbent particles in the furnace. The sulfation was based on the partially sintered spheres model (PSSM), coupled with simulated particle calcination and sintering. The complex geometry of the particle was taken into account, with the assumption that it consists of spherical grains in contact with each other. Numerical simulations of drop down tube reactors were performed for both CaCO3 and Ca(OH)(2) sorbent particles and results were compared with experimental data available from the literature. The model of the sorbent reactions will be further used for simulations of desulfurization reactions in turbulent gas-particle flow under coal combustion conditions.",
publisher = "Srpsko hemijsko društvo, Beograd",
journal = "Journal of The Serbian Chemical Society",
title = "Modeling of the reactions of a calcium-based sorbent with sulfur dioxide",
pages = "562-549",
number = "4",
volume = "80",
doi = "10.2298/JSC140903115T"
}

Tomanović, I., Belošević, S. V., Milicević, A.,& Tucaković, D.. (2015). Modeling of the reactions of a calcium-based sorbent with sulfur dioxide. in Journal of The Serbian Chemical Society
Srpsko hemijsko društvo, Beograd., 80(4), 549-562.
https://doi.org/10.2298/JSC140903115T

Tomanović I, Belošević SV, Milicević A, Tucaković D. Modeling of the reactions of a calcium-based sorbent with sulfur dioxide. in Journal of The Serbian Chemical Society. 2015;80(4):549-562.
doi:10.2298/JSC140903115T .

Tomanović, Ivan, Belošević, Srđan V., Milicević, Aleksandar, Tucaković, Dragan, "Modeling of the reactions of a calcium-based sorbent with sulfur dioxide" in Journal of The Serbian Chemical Society, 80, no. 4 (2015):549-562,
https://doi.org/10.2298/JSC140903115T . .

TY  - CONF
AU  - Banjac, Miloš
AU  - Vencl, Aleksandar
PY  - 2014
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4339
AB  - Tribologija, kao naušno-stručna disciplina u okviru mašinstva, izučava pojave i procese na površinama u međusobnom delovanju, direktnom ili indirektnom dodiru i relativnom kretanju. Drugim rečima tribologija izučava složene probleme trenja, habanja i podmazivanja, kao i fenomene vezane za ove procese. S obzirom da je proces trenja uvek praćen procesima transformacije energije, odnosno procesima disipacije energije koji uzrokuju stvaranje entropije, termodinamički pristup analize stvaranja entropije predstavlja jedno od prikladnih sredstava za proučavanje ponašanja kompleksnih procesa trenja i habanja. Ovaj rad predstavlja pregled objavljenih radova u kojima je termodinamički pristup korišćen u analizi procesa trenja i habanja u tribološkim sistemima.
C3  - Proceedings of the International Conference on Materials, Tribology, Recycling – MATRIB 2014
T1  - Termodinamička analiza procesa trenja i trošenja
EP  - 29
SP  - 20
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4339
ER  - 

@conference{
author = "Banjac, Miloš and Vencl, Aleksandar",
year = "2014",
abstract = "Tribologija, kao naušno-stručna disciplina u okviru mašinstva, izučava pojave i procese na površinama u međusobnom delovanju, direktnom ili indirektnom dodiru i relativnom kretanju. Drugim rečima tribologija izučava složene probleme trenja, habanja i podmazivanja, kao i fenomene vezane za ove procese. S obzirom da je proces trenja uvek praćen procesima transformacije energije, odnosno procesima disipacije energije koji uzrokuju stvaranje entropije, termodinamički pristup analize stvaranja entropije predstavlja jedno od prikladnih sredstava za proučavanje ponašanja kompleksnih procesa trenja i habanja. Ovaj rad predstavlja pregled objavljenih radova u kojima je termodinamički pristup korišćen u analizi procesa trenja i habanja u tribološkim sistemima.",
journal = "Proceedings of the International Conference on Materials, Tribology, Recycling – MATRIB 2014",
title = "Termodinamička analiza procesa trenja i trošenja",
pages = "29-20",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4339"
}

Banjac, M.,& Vencl, A.. (2014). Termodinamička analiza procesa trenja i trošenja. in Proceedings of the International Conference on Materials, Tribology, Recycling – MATRIB 2014, 20-29.
https://hdl.handle.net/21.15107/rcub_machinery_4339

Banjac M, Vencl A. Termodinamička analiza procesa trenja i trošenja. in Proceedings of the International Conference on Materials, Tribology, Recycling – MATRIB 2014. 2014;:20-29.
https://hdl.handle.net/21.15107/rcub_machinery_4339 .

Banjac, Miloš, Vencl, Aleksandar, "Termodinamička analiza procesa trenja i trošenja" in Proceedings of the International Conference on Materials, Tribology, Recycling – MATRIB 2014 (2014):20-29,
https://hdl.handle.net/21.15107/rcub_machinery_4339 .