TY  - CONF
AU  - Milićević, Aleksandar
AU  - Belošević, Srđan
AU  - Erić, Milić
AU  - Marković, Zoran
AU  - Tomanović, Ivan
AU  - Crnomarković, Nenad
AU  - Stojanović, Andrijana
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12766
AB  - Heating value is an important indicator for assessment of the coal quality. Machine learning models are powerful computational tools that allow for the analysis of various heat and mass transfer phenomena in energy systems. In this paper, Random forest model for determining the lower heating values of coal from the thermal power plant “Kolubara A” is developed based on proximate and ultimate fuel analysis. A database of the proximate and ultimate fuel analysis values and lower heating value of coal was created by experimental measurements in the accredited test laboratory of the Department of Thermal Engineering and Energy (“VINČA” Institute of Nuclear Sciences). The developed Random forest models, applied to a relatively small database, showed acceptable predictions for the lower heating value based on both the proximate analysis (RMSE = 0.22 MJ/kg and MAPE = 2.26%) and the ultimate analysis (RMSE = 0.64 MJ/kg and MAPE = 6.12%), with better accuracy achieved by the model whose input data consisted of the values of technical fuel analysis.
PB  - Belgrade : Society of Thermal Engineers of Serbia
C3  - International Conference Power Plants 2023 : Proceedings
T1  - Random forest model for determination of the lower heating value of TPP “Kolubara A” coal
SP  - 748
EP  - 752
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12766
ER  - 

@conference{
author = "Milićević, Aleksandar and Belošević, Srđan and Erić, Milić and Marković, Zoran and Tomanović, Ivan and Crnomarković, Nenad and Stojanović, Andrijana",
year = "2023",
abstract = "Heating value is an important indicator for assessment of the coal quality. Machine learning models are powerful computational tools that allow for the analysis of various heat and mass transfer phenomena in energy systems. In this paper, Random forest model for determining the lower heating values of coal from the thermal power plant “Kolubara A” is developed based on proximate and ultimate fuel analysis. A database of the proximate and ultimate fuel analysis values and lower heating value of coal was created by experimental measurements in the accredited test laboratory of the Department of Thermal Engineering and Energy (“VINČA” Institute of Nuclear Sciences). The developed Random forest models, applied to a relatively small database, showed acceptable predictions for the lower heating value based on both the proximate analysis (RMSE = 0.22 MJ/kg and MAPE = 2.26%) and the ultimate analysis (RMSE = 0.64 MJ/kg and MAPE = 6.12%), with better accuracy achieved by the model whose input data consisted of the values of technical fuel analysis.",
publisher = "Belgrade : Society of Thermal Engineers of Serbia",
journal = "International Conference Power Plants 2023 : Proceedings",
title = "Random forest model for determination of the lower heating value of TPP “Kolubara A” coal",
pages = "748-752",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12766"
}

Milićević, A., Belošević, S., Erić, M., Marković, Z., Tomanović, I., Crnomarković, N.,& Stojanović, A.. (2023). Random forest model for determination of the lower heating value of TPP “Kolubara A” coal. in International Conference Power Plants 2023 : Proceedings
Belgrade : Society of Thermal Engineers of Serbia., 748-752.
https://hdl.handle.net/21.15107/rcub_vinar_12766

Milićević A, Belošević S, Erić M, Marković Z, Tomanović I, Crnomarković N, Stojanović A. Random forest model for determination of the lower heating value of TPP “Kolubara A” coal. in International Conference Power Plants 2023 : Proceedings. 2023;:748-752.
https://hdl.handle.net/21.15107/rcub_vinar_12766 .

Milićević, Aleksandar, Belošević, Srđan, Erić, Milić, Marković, Zoran, Tomanović, Ivan, Crnomarković, Nenad, Stojanović, Andrijana, "Random forest model for determination of the lower heating value of TPP “Kolubara A” coal" in International Conference Power Plants 2023 : Proceedings (2023):748-752,
https://hdl.handle.net/21.15107/rcub_vinar_12766 .

TY  - CONF
AU  - Tomanović, Ivan
AU  - Belošević, Srđan
AU  - Milićević, Aleksandar
AU  - Crnomarković, Nenad
AU  - Stojanović, Andrijana
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12768
AB  - The development of both CPUs and GPUs slowly moved towards the multi-core processors at the start of this century, allowing for true execution of several applications in parallel, or running a single task over multiple threads. This was especially true when considering the affordable and widely available units. The development of powerful GPUs, helped brew an idea in scientific circles to process large and scalable matrices containing mostly non graphical data on the GPUs, the same way they are processing the textures, utilizing the advantage of concurrent execution of many simple operations. Recent advances allowed for even easier and more accessible utilization of new hardware by both the scientific circles and the public in general through the development of new programming tools, languages, and language extensions. In this paper we analyze the structure of an in-house CFD code developed for coal-fired boiler furnace simulations, with an idea to suggest an optimal algorithm structure that would allow this code to run on many-core architectures. This is an interesting task, especially given the recent increase in GPU computational abilities, led to the availability of powerful and affordable workstations capable of processing large data sets. Here we analyze the algorithm for a single thread optimized code, identifying potential problems and recursive dependencies, and suggest the structure that would allow movement towards the parallel versions of existing code and its execution on both multi- and many-core architectures. Goal of this analysis is to identify and understand the inherently recursive portions of the code that should undergo modifications to allow for fully parallel executions in future efficient simulations of boiler furnaces.
PB  - Belgrade : Society of Thermal Engineers of Serbia
C3  - International Conference Power Plants 2023 : Proceedings
T1  - Possibilities for parallel computations in utility scale furnace: The code structure analysis
SP  - 763
EP  - 771
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12768
ER  - 

@conference{
author = "Tomanović, Ivan and Belošević, Srđan and Milićević, Aleksandar and Crnomarković, Nenad and Stojanović, Andrijana",
year = "2023",
abstract = "The development of both CPUs and GPUs slowly moved towards the multi-core processors at the start of this century, allowing for true execution of several applications in parallel, or running a single task over multiple threads. This was especially true when considering the affordable and widely available units. The development of powerful GPUs, helped brew an idea in scientific circles to process large and scalable matrices containing mostly non graphical data on the GPUs, the same way they are processing the textures, utilizing the advantage of concurrent execution of many simple operations. Recent advances allowed for even easier and more accessible utilization of new hardware by both the scientific circles and the public in general through the development of new programming tools, languages, and language extensions. In this paper we analyze the structure of an in-house CFD code developed for coal-fired boiler furnace simulations, with an idea to suggest an optimal algorithm structure that would allow this code to run on many-core architectures. This is an interesting task, especially given the recent increase in GPU computational abilities, led to the availability of powerful and affordable workstations capable of processing large data sets. Here we analyze the algorithm for a single thread optimized code, identifying potential problems and recursive dependencies, and suggest the structure that would allow movement towards the parallel versions of existing code and its execution on both multi- and many-core architectures. Goal of this analysis is to identify and understand the inherently recursive portions of the code that should undergo modifications to allow for fully parallel executions in future efficient simulations of boiler furnaces.",
publisher = "Belgrade : Society of Thermal Engineers of Serbia",
journal = "International Conference Power Plants 2023 : Proceedings",
title = "Possibilities for parallel computations in utility scale furnace: The code structure analysis",
pages = "763-771",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12768"
}

Tomanović, I., Belošević, S., Milićević, A., Crnomarković, N.,& Stojanović, A.. (2023). Possibilities for parallel computations in utility scale furnace: The code structure analysis. in International Conference Power Plants 2023 : Proceedings
Belgrade : Society of Thermal Engineers of Serbia., 763-771.
https://hdl.handle.net/21.15107/rcub_vinar_12768

Tomanović I, Belošević S, Milićević A, Crnomarković N, Stojanović A. Possibilities for parallel computations in utility scale furnace: The code structure analysis. in International Conference Power Plants 2023 : Proceedings. 2023;:763-771.
https://hdl.handle.net/21.15107/rcub_vinar_12768 .

Tomanović, Ivan, Belošević, Srđan, Milićević, Aleksandar, Crnomarković, Nenad, Stojanović, Andrijana, "Possibilities for parallel computations in utility scale furnace: The code structure analysis" in International Conference Power Plants 2023 : Proceedings (2023):763-771,
https://hdl.handle.net/21.15107/rcub_vinar_12768 .

TY  - JOUR
AU  - Crnomarković, Nenad
AU  - Belošević, Srđan
AU  - Tomanović, Ivan
AU  - Milićević, Aleksandar
AU  - Stojanović, Andrijana
AU  - Tucaković, Dragan
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12245
AB  - In this paper, influence of the temperature fluctuations, (as a version of turbulence-radiation interaction), on the flame temperature and radiative heat exchange inside the pulverized coal-fired furnace was investigated. The radiative heat exchange was solved by the Hottel zonal model. The influence of the temperature fluctuation was studied for three values of the extinction coefficient of the flame: 0.3 m?1, 1.0 m?1, and 2.0 m?1. The investigation was conducted for the relative temperature fluctuations obtained by solving the transport equation for the temperature variance, and for four constant values of the relative temperature fluctuations (0.0, 0.1, 0.15, and 0.2). The maximal values of the mean temperature fluctuations and relative temperature fluctuations were obtained in the region close to the burners. The decrease of the flame temperature of about 100 K was obtained in the hottest region, for every extinction coefficient. An increase in the mean wall flux was found to be on the order of several percents, compared to the case without the temperature fluctuations. When the temperature variance was calculated, the mean relative temperature fluctuations were approximately 15%, for every extinction coefficient. The mean wall fluxes increased and flame temperature at the furnace exit plane decreased with the increase in the relative temperature fluctuations. The selected indicators of the furnace operation, such as the mean wall flux and mean flame temperature at the furnace exit plane, obtained for the calculated temperature variance, were close to the values predicted for the constant relative temperature fluctuation of 15%.
T2  - Thermal Science
T1  - Influence of the temperature fluctuations on the flame temperature and radiative heat exchange inside a pulverized coal-fired furnace
VL  - 27
IS  - 6 Part A
SP  - 4539
EP  - 4549
DO  - 10.2298/TSCI230609173C
ER  - 

@article{
author = "Crnomarković, Nenad and Belošević, Srđan and Tomanović, Ivan and Milićević, Aleksandar and Stojanović, Andrijana and Tucaković, Dragan",
year = "2023",
abstract = "In this paper, influence of the temperature fluctuations, (as a version of turbulence-radiation interaction), on the flame temperature and radiative heat exchange inside the pulverized coal-fired furnace was investigated. The radiative heat exchange was solved by the Hottel zonal model. The influence of the temperature fluctuation was studied for three values of the extinction coefficient of the flame: 0.3 m?1, 1.0 m?1, and 2.0 m?1. The investigation was conducted for the relative temperature fluctuations obtained by solving the transport equation for the temperature variance, and for four constant values of the relative temperature fluctuations (0.0, 0.1, 0.15, and 0.2). The maximal values of the mean temperature fluctuations and relative temperature fluctuations were obtained in the region close to the burners. The decrease of the flame temperature of about 100 K was obtained in the hottest region, for every extinction coefficient. An increase in the mean wall flux was found to be on the order of several percents, compared to the case without the temperature fluctuations. When the temperature variance was calculated, the mean relative temperature fluctuations were approximately 15%, for every extinction coefficient. The mean wall fluxes increased and flame temperature at the furnace exit plane decreased with the increase in the relative temperature fluctuations. The selected indicators of the furnace operation, such as the mean wall flux and mean flame temperature at the furnace exit plane, obtained for the calculated temperature variance, were close to the values predicted for the constant relative temperature fluctuation of 15%.",
journal = "Thermal Science",
title = "Influence of the temperature fluctuations on the flame temperature and radiative heat exchange inside a pulverized coal-fired furnace",
volume = "27",
number = "6 Part A",
pages = "4539-4549",
doi = "10.2298/TSCI230609173C"
}

Crnomarković, N., Belošević, S., Tomanović, I., Milićević, A., Stojanović, A.,& Tucaković, D.. (2023). Influence of the temperature fluctuations on the flame temperature and radiative heat exchange inside a pulverized coal-fired furnace. in Thermal Science, 27(6 Part A), 4539-4549.
https://doi.org/10.2298/TSCI230609173C

Crnomarković N, Belošević S, Tomanović I, Milićević A, Stojanović A, Tucaković D. Influence of the temperature fluctuations on the flame temperature and radiative heat exchange inside a pulverized coal-fired furnace. in Thermal Science. 2023;27(6 Part A):4539-4549.
doi:10.2298/TSCI230609173C .

Crnomarković, Nenad, Belošević, Srđan, Tomanović, Ivan, Milićević, Aleksandar, Stojanović, Andrijana, Tucaković, Dragan, "Influence of the temperature fluctuations on the flame temperature and radiative heat exchange inside a pulverized coal-fired furnace" in Thermal Science, 27, no. 6 Part A (2023):4539-4549,
https://doi.org/10.2298/TSCI230609173C . .

TY  - JOUR
AU  - Milićević, Aleksandar
AU  - Belošević, Srđan
AU  - Žarković, Mileta
AU  - Tomanović, Ivan
AU  - Crnomarković, Nenad
AU  - Stojanović, Andrijana
AU  - Stupar, Goran
AU  - Deng, Lei
AU  - Che, Defu
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11021
AB  - When planning the development of the energy sector, significant attention is given to the energy from the renewable sources, amongst which the biomass has an important role. Computational fluid mechanics and machine learning models are the powerful and efficient tools which allow the analysis of various heat and mass transfer phenomena in energy facilities. In this study, the in-house developed CFD code and machine learning models (Random Forest, Gradient Boosting and Artificial Neural Network) for predicting the biomass trajectories, particle mass burnout and residence time in a swirl burner reactor are presented. Pulverized biomass combustion cases (fine straw, pinewood and switch grass) with various mean diameters (ranging between 60 and 650 μm) and different shape factors (within the range 0–1) are considered. The results of numerical simulations revealed a noticeably nonlinear dependence between the input values (particle types, sizes and shapes) and the output values (particle trajectories, mass burnout and residence time), mostly due to the complex swirling flow in the reactor. For particles with the mean diameters within the ranges considered, the mass burnout of particles generally decreases as the biomass particle shape factor increases. The residence time of pulverized biomass in the reactor shows in most cases a decreasing trend as the particle shape factor increases. Artificial Neural Network showed the best predictions for both particle mass burnout (RMSE = 0.083 and R2 = 0.937) and particle residence time (RMSE = 1.145 s and R2 = 0.900), providing the reliable assessment of these important indicators in the combustion process.
T2  - Biomass and Bioenergy
T1  - Effects of biomass particles size and shape on combustion process in the swirl-stabilized burner reactor: CFD and machine learning approach
VL  - 174
SP  - 106817
DO  - 10.1016/j.biombioe.2023.106817
ER  - 

@article{
author = "Milićević, Aleksandar and Belošević, Srđan and Žarković, Mileta and Tomanović, Ivan and Crnomarković, Nenad and Stojanović, Andrijana and Stupar, Goran and Deng, Lei and Che, Defu",
year = "2023",
abstract = "When planning the development of the energy sector, significant attention is given to the energy from the renewable sources, amongst which the biomass has an important role. Computational fluid mechanics and machine learning models are the powerful and efficient tools which allow the analysis of various heat and mass transfer phenomena in energy facilities. In this study, the in-house developed CFD code and machine learning models (Random Forest, Gradient Boosting and Artificial Neural Network) for predicting the biomass trajectories, particle mass burnout and residence time in a swirl burner reactor are presented. Pulverized biomass combustion cases (fine straw, pinewood and switch grass) with various mean diameters (ranging between 60 and 650 μm) and different shape factors (within the range 0–1) are considered. The results of numerical simulations revealed a noticeably nonlinear dependence between the input values (particle types, sizes and shapes) and the output values (particle trajectories, mass burnout and residence time), mostly due to the complex swirling flow in the reactor. For particles with the mean diameters within the ranges considered, the mass burnout of particles generally decreases as the biomass particle shape factor increases. The residence time of pulverized biomass in the reactor shows in most cases a decreasing trend as the particle shape factor increases. Artificial Neural Network showed the best predictions for both particle mass burnout (RMSE = 0.083 and R2 = 0.937) and particle residence time (RMSE = 1.145 s and R2 = 0.900), providing the reliable assessment of these important indicators in the combustion process.",
journal = "Biomass and Bioenergy",
title = "Effects of biomass particles size and shape on combustion process in the swirl-stabilized burner reactor: CFD and machine learning approach",
volume = "174",
pages = "106817",
doi = "10.1016/j.biombioe.2023.106817"
}

Milićević, A., Belošević, S., Žarković, M., Tomanović, I., Crnomarković, N., Stojanović, A., Stupar, G., Deng, L.,& Che, D.. (2023). Effects of biomass particles size and shape on combustion process in the swirl-stabilized burner reactor: CFD and machine learning approach. in Biomass and Bioenergy, 174, 106817.
https://doi.org/10.1016/j.biombioe.2023.106817

Milićević A, Belošević S, Žarković M, Tomanović I, Crnomarković N, Stojanović A, Stupar G, Deng L, Che D. Effects of biomass particles size and shape on combustion process in the swirl-stabilized burner reactor: CFD and machine learning approach. in Biomass and Bioenergy. 2023;174:106817.
doi:10.1016/j.biombioe.2023.106817 .

Milićević, Aleksandar, Belošević, Srđan, Žarković, Mileta, Tomanović, Ivan, Crnomarković, Nenad, Stojanović, Andrijana, Stupar, Goran, Deng, Lei, Che, Defu, "Effects of biomass particles size and shape on combustion process in the swirl-stabilized burner reactor: CFD and machine learning approach" in Biomass and Bioenergy, 174 (2023):106817,
https://doi.org/10.1016/j.biombioe.2023.106817 . .

TY  - CONF
AU  - Stojanović, Andrijana
AU  - Crnomarković, Nenad
AU  - Milićević, Aleksandar
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12292
PB  - Niš : University of Niš, Faculty of Mechanical Engineering
C3  - SimTerm2022 : 20th international conference on thermal science and engineering of Serbia : Proceedings
T1  - The Optimal Uses of Biomass for Electricity and Fuel Production
SP  - 112
EP  - 117
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12292
ER  - 

@conference{
author = "Stojanović, Andrijana and Crnomarković, Nenad and Milićević, Aleksandar",
year = "2022",
publisher = "Niš : University of Niš, Faculty of Mechanical Engineering",
journal = "SimTerm2022 : 20th international conference on thermal science and engineering of Serbia : Proceedings",
title = "The Optimal Uses of Biomass for Electricity and Fuel Production",
pages = "112-117",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12292"
}

Stojanović, A., Crnomarković, N.,& Milićević, A.. (2022). The Optimal Uses of Biomass for Electricity and Fuel Production. in SimTerm2022 : 20th international conference on thermal science and engineering of Serbia : Proceedings
Niš : University of Niš, Faculty of Mechanical Engineering., 112-117.
https://hdl.handle.net/21.15107/rcub_vinar_12292

Stojanović A, Crnomarković N, Milićević A. The Optimal Uses of Biomass for Electricity and Fuel Production. in SimTerm2022 : 20th international conference on thermal science and engineering of Serbia : Proceedings. 2022;:112-117.
https://hdl.handle.net/21.15107/rcub_vinar_12292 .

Stojanović, Andrijana, Crnomarković, Nenad, Milićević, Aleksandar, "The Optimal Uses of Biomass for Electricity and Fuel Production" in SimTerm2022 : 20th international conference on thermal science and engineering of Serbia : Proceedings (2022):112-117,
https://hdl.handle.net/21.15107/rcub_vinar_12292 .

TY  - JOUR
AU  - Crnomarković, Nenad Đ.
AU  - Belošević, Srđan
AU  - Nemoda, Stevan
AU  - Tomanović, Ivan
AU  - Milićević, Aleksandar
AU  - Stojanović, Andrijana D.
AU  - Stupar, Goran
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10754
AB  - The pulverized coal-fired furnaces are expected to use co-firing withbiomass for environmental reasons. Although the non-uniform ash depositsare formed on the furnace walls, the uniform deposits could be used for theanalysis of the furnace operation. The objective of this investigation wasdetermination of the uniform deposit thickness, used as a criterion forprediction of the sootblower activation moment in coal-biomass co-firing.The investigation comprised numerical simulations for uniform and nonuniform deposits to find the relative differences for the selected variablesthat were important for the sootblower activation: the mean wall fluxes andflame temperatures. The local thicknesses of the non-uniform deposits weredetermined by the gamma distribution for several mean and standarddeviation values using the inversion method. The thicknesses of the uniformdeposits were considered among the measures of central tendency: mode,mean, and median, of the non-uniform deposits. The mean was expected toprovide the smallest relative differences, while the mode was excluded fromfurther consideration after analysis of its values. The median was found tobe better choice than the mean, as it provided smaller relative differences ofthe selected variables for the thick deposits, which were important for thesootblower activation. The method based on comparison of the uniformdeposits for coal firing and those for the co-firing with biomass wasproposed for the prediction of the sootblower activation moment. Themethod can be used for the selection of the operational regimes for coalbiomass co-firing.
T2  - Thermal Science
T1  - Determination of the Sootblower Activation Moment for Biomass Co-Firing in a Pulverized Coal Furnace
VL  - 27
IS  - 1 Part B
SP  - 755
EP  - 766
DO  - 10.2298/TSCI220516149C
ER  - 

@article{
author = "Crnomarković, Nenad Đ. and Belošević, Srđan and Nemoda, Stevan and Tomanović, Ivan and Milićević, Aleksandar and Stojanović, Andrijana D. and Stupar, Goran",
year = "2022",
abstract = "The pulverized coal-fired furnaces are expected to use co-firing withbiomass for environmental reasons. Although the non-uniform ash depositsare formed on the furnace walls, the uniform deposits could be used for theanalysis of the furnace operation. The objective of this investigation wasdetermination of the uniform deposit thickness, used as a criterion forprediction of the sootblower activation moment in coal-biomass co-firing.The investigation comprised numerical simulations for uniform and nonuniform deposits to find the relative differences for the selected variablesthat were important for the sootblower activation: the mean wall fluxes andflame temperatures. The local thicknesses of the non-uniform deposits weredetermined by the gamma distribution for several mean and standarddeviation values using the inversion method. The thicknesses of the uniformdeposits were considered among the measures of central tendency: mode,mean, and median, of the non-uniform deposits. The mean was expected toprovide the smallest relative differences, while the mode was excluded fromfurther consideration after analysis of its values. The median was found tobe better choice than the mean, as it provided smaller relative differences ofthe selected variables for the thick deposits, which were important for thesootblower activation. The method based on comparison of the uniformdeposits for coal firing and those for the co-firing with biomass wasproposed for the prediction of the sootblower activation moment. Themethod can be used for the selection of the operational regimes for coalbiomass co-firing.",
journal = "Thermal Science",
title = "Determination of the Sootblower Activation Moment for Biomass Co-Firing in a Pulverized Coal Furnace",
volume = "27",
number = "1 Part B",
pages = "755-766",
doi = "10.2298/TSCI220516149C"
}

Crnomarković, N. Đ., Belošević, S., Nemoda, S., Tomanović, I., Milićević, A., Stojanović, A. D.,& Stupar, G.. (2022). Determination of the Sootblower Activation Moment for Biomass Co-Firing in a Pulverized Coal Furnace. in Thermal Science, 27(1 Part B), 755-766.
https://doi.org/10.2298/TSCI220516149C

Crnomarković NĐ, Belošević S, Nemoda S, Tomanović I, Milićević A, Stojanović AD, Stupar G. Determination of the Sootblower Activation Moment for Biomass Co-Firing in a Pulverized Coal Furnace. in Thermal Science. 2022;27(1 Part B):755-766.
doi:10.2298/TSCI220516149C .

Crnomarković, Nenad Đ., Belošević, Srđan, Nemoda, Stevan, Tomanović, Ivan, Milićević, Aleksandar, Stojanović, Andrijana D., Stupar, Goran, "Determination of the Sootblower Activation Moment for Biomass Co-Firing in a Pulverized Coal Furnace" in Thermal Science, 27, no. 1 Part B (2022):755-766,
https://doi.org/10.2298/TSCI220516149C . .

TY  - JOUR
AU  - Stojanović, Andrijana D.
AU  - Belošević, Srđan
AU  - Crnomarković, Nenad Đ.
AU  - Tomanović, Ivan D.
AU  - Milićević, Aleksandar
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10177
AB  - Understanding nucleate pool boiling heat transfer and, in particular the accurate prediction of conditions that can lead to critical heat flux, is of the utmost importance in many industries. Due to the safety issues related to the nuclear power plants, and for the efficient operation of many heat transfer units including fossil fuel boilers, fusion reactors, electronic chips, etc., it is important to understand this kind of heat transfer. In this paper, a comprehensive review of analytical and numerical work on nucleate pool boiling heat transfer is presented. In order to understand this phenomenon, existing studies on boiling heat transfer coefficient and boiling heat flux are also discussed, as well as characteristics of boiling phenomena such as bubble departure diameter, bubble departure frequency, active nucleation site density, bubble waiting and growth period and their impact on pool boiling heat transfer.
T2  - Thermal Science
T1  - Nucleate pool boiling heat transfer: Review of models and bubble dynamics parameters
VL  - 26
IS  - 1 Part A
SP  - 157
EP  - 174
DO  - 10.2298/TSCI200111069S
ER  - 

@article{
author = "Stojanović, Andrijana D. and Belošević, Srđan and Crnomarković, Nenad Đ. and Tomanović, Ivan D. and Milićević, Aleksandar",
year = "2022",
abstract = "Understanding nucleate pool boiling heat transfer and, in particular the accurate prediction of conditions that can lead to critical heat flux, is of the utmost importance in many industries. Due to the safety issues related to the nuclear power plants, and for the efficient operation of many heat transfer units including fossil fuel boilers, fusion reactors, electronic chips, etc., it is important to understand this kind of heat transfer. In this paper, a comprehensive review of analytical and numerical work on nucleate pool boiling heat transfer is presented. In order to understand this phenomenon, existing studies on boiling heat transfer coefficient and boiling heat flux are also discussed, as well as characteristics of boiling phenomena such as bubble departure diameter, bubble departure frequency, active nucleation site density, bubble waiting and growth period and their impact on pool boiling heat transfer.",
journal = "Thermal Science",
title = "Nucleate pool boiling heat transfer: Review of models and bubble dynamics parameters",
volume = "26",
number = "1 Part A",
pages = "157-174",
doi = "10.2298/TSCI200111069S"
}

Stojanović, A. D., Belošević, S., Crnomarković, N. Đ., Tomanović, I. D.,& Milićević, A.. (2022). Nucleate pool boiling heat transfer: Review of models and bubble dynamics parameters. in Thermal Science, 26(1 Part A), 157-174.
https://doi.org/10.2298/TSCI200111069S

Stojanović AD, Belošević S, Crnomarković NĐ, Tomanović ID, Milićević A. Nucleate pool boiling heat transfer: Review of models and bubble dynamics parameters. in Thermal Science. 2022;26(1 Part A):157-174.
doi:10.2298/TSCI200111069S .

Stojanović, Andrijana D., Belošević, Srđan, Crnomarković, Nenad Đ., Tomanović, Ivan D., Milićević, Aleksandar, "Nucleate pool boiling heat transfer: Review of models and bubble dynamics parameters" in Thermal Science, 26, no. 1 Part A (2022):157-174,
https://doi.org/10.2298/TSCI200111069S . .

TY  - JOUR
AU  - Milićević, Aleksandar
AU  - Belošević, Srđan
AU  - Crnomarković, Nenad Đ.
AU  - Tomanović, Ivan D.
AU  - Stojanović, Andrijana D.
AU  - Tucaković, Dragan
AU  - Lei Deng
AU  - Che, Defu
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9916
AB  - The co-combustion of biomass and coal in a utility boiler could provide cleaner power production and ensure sustainable utilization of the solid fuels. This paper aims to numerically investigate complex processes in the tangentially-fired 900 MWth boiler furnace during direct co-firing of lignite and biomass with 10% thermal share of agricultural residues (wheat straw, corn straw and soybean straw) under variable boiler loads (100%, 85% and 70%). Simulations are conducted by means of in-house developed computer code, supported by the specially designed user-friendly graphical interface. Co-firing of agricultural residues provides lower pollutant emissions, somewhat higher furnace exit gas temperature and increase in unburnt carbon in bottom/fly ash, compared to the lignite combustion without biomass. Soybean is found to be the most suitable for co-firing regarding its ash melting point, however due to its abundance and availability the wheat straw is selected for this study. Co-combustion at partial boiler loads results in reduction of NOx and SOx up to 34% and 9.5%, respectively. Burners arrangement and furnace aerodynamics affect the abatement of pollutants. This study may help the global efforts in fighting the climate change, efficiently and cost-effectively, thus offering considerable economic and social benefits.
T2  - International Journal of Heat and Mass Transfer
T1  - Numerical study of co-firing lignite and agricultural biomass in utility boiler under variable operation conditions
VL  - 181
SP  - 121728
DO  - 10.1016/j.ijheatmasstransfer.2021.121728
ER  - 

@article{
author = "Milićević, Aleksandar and Belošević, Srđan and Crnomarković, Nenad Đ. and Tomanović, Ivan D. and Stojanović, Andrijana D. and Tucaković, Dragan and Lei Deng and Che, Defu",
year = "2021",
abstract = "The co-combustion of biomass and coal in a utility boiler could provide cleaner power production and ensure sustainable utilization of the solid fuels. This paper aims to numerically investigate complex processes in the tangentially-fired 900 MWth boiler furnace during direct co-firing of lignite and biomass with 10% thermal share of agricultural residues (wheat straw, corn straw and soybean straw) under variable boiler loads (100%, 85% and 70%). Simulations are conducted by means of in-house developed computer code, supported by the specially designed user-friendly graphical interface. Co-firing of agricultural residues provides lower pollutant emissions, somewhat higher furnace exit gas temperature and increase in unburnt carbon in bottom/fly ash, compared to the lignite combustion without biomass. Soybean is found to be the most suitable for co-firing regarding its ash melting point, however due to its abundance and availability the wheat straw is selected for this study. Co-combustion at partial boiler loads results in reduction of NOx and SOx up to 34% and 9.5%, respectively. Burners arrangement and furnace aerodynamics affect the abatement of pollutants. This study may help the global efforts in fighting the climate change, efficiently and cost-effectively, thus offering considerable economic and social benefits.",
journal = "International Journal of Heat and Mass Transfer",
title = "Numerical study of co-firing lignite and agricultural biomass in utility boiler under variable operation conditions",
volume = "181",
pages = "121728",
doi = "10.1016/j.ijheatmasstransfer.2021.121728"
}

Milićević, A., Belošević, S., Crnomarković, N. Đ., Tomanović, I. D., Stojanović, A. D., Tucaković, D., Lei Deng,& Che, D.. (2021). Numerical study of co-firing lignite and agricultural biomass in utility boiler under variable operation conditions. in International Journal of Heat and Mass Transfer, 181, 121728.
https://doi.org/10.1016/j.ijheatmasstransfer.2021.121728

Milićević A, Belošević S, Crnomarković NĐ, Tomanović ID, Stojanović AD, Tucaković D, Lei Deng, Che D. Numerical study of co-firing lignite and agricultural biomass in utility boiler under variable operation conditions. in International Journal of Heat and Mass Transfer. 2021;181:121728.
doi:10.1016/j.ijheatmasstransfer.2021.121728 .

Milićević, Aleksandar, Belošević, Srđan, Crnomarković, Nenad Đ., Tomanović, Ivan D., Stojanović, Andrijana D., Tucaković, Dragan, Lei Deng, Che, Defu, "Numerical study of co-firing lignite and agricultural biomass in utility boiler under variable operation conditions" in International Journal of Heat and Mass Transfer, 181 (2021):121728,
https://doi.org/10.1016/j.ijheatmasstransfer.2021.121728 . .

TY  - JOUR
AU  - Stojanović, Andrijana D.
AU  - Belošević, Srđan
AU  - Crnomarković, Nenad Đ.
AU  - Tomanović, Ivan
AU  - Milićević, Aleksandar
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10276
AB  - Due to extensive research efforts within the past thirty years, the mechanisms by which bubbles transfer energy during pool boiling are relatively well understood and have various applications in reactors, rockets, distillation, air separation, refrigeration and power cycles. In this paper, CFD analysis of heat transfer characteristics in nucleate pool boiling of saturated water in atmospheric conditions is performed in order to find out the influence of heat flux intensity on pool boiling dynamics. The investigation is carried out for four cases of different heat flux intensities and obtained results for velocity fields of liquid and void fractions are discussed. Grid independent test is also performed to improve the accuracy of calculation. In this way, complete picture of two-phase mixture behaviour on heated wall is represented.
T2  - Journal of the Serbian Society for Computational Mechanics
T1  - Heat Transfer to a Boiling Liquid – Numerical Study
VL  - 15
IS  - 1
SP  - 177
EP  - 185
DO  - 10.24874/jsscm.2021.15.01.12
ER  - 

@article{
author = "Stojanović, Andrijana D. and Belošević, Srđan and Crnomarković, Nenad Đ. and Tomanović, Ivan and Milićević, Aleksandar",
year = "2021",
abstract = "Due to extensive research efforts within the past thirty years, the mechanisms by which bubbles transfer energy during pool boiling are relatively well understood and have various applications in reactors, rockets, distillation, air separation, refrigeration and power cycles. In this paper, CFD analysis of heat transfer characteristics in nucleate pool boiling of saturated water in atmospheric conditions is performed in order to find out the influence of heat flux intensity on pool boiling dynamics. The investigation is carried out for four cases of different heat flux intensities and obtained results for velocity fields of liquid and void fractions are discussed. Grid independent test is also performed to improve the accuracy of calculation. In this way, complete picture of two-phase mixture behaviour on heated wall is represented.",
journal = "Journal of the Serbian Society for Computational Mechanics",
title = "Heat Transfer to a Boiling Liquid – Numerical Study",
volume = "15",
number = "1",
pages = "177-185",
doi = "10.24874/jsscm.2021.15.01.12"
}

Stojanović, A. D., Belošević, S., Crnomarković, N. Đ., Tomanović, I.,& Milićević, A.. (2021). Heat Transfer to a Boiling Liquid – Numerical Study. in Journal of the Serbian Society for Computational Mechanics, 15(1), 177-185.
https://doi.org/10.24874/jsscm.2021.15.01.12

Stojanović AD, Belošević S, Crnomarković NĐ, Tomanović I, Milićević A. Heat Transfer to a Boiling Liquid – Numerical Study. in Journal of the Serbian Society for Computational Mechanics. 2021;15(1):177-185.
doi:10.24874/jsscm.2021.15.01.12 .

Stojanović, Andrijana D., Belošević, Srđan, Crnomarković, Nenad Đ., Tomanović, Ivan, Milićević, Aleksandar, "Heat Transfer to a Boiling Liquid – Numerical Study" in Journal of the Serbian Society for Computational Mechanics, 15, no. 1 (2021):177-185,
https://doi.org/10.24874/jsscm.2021.15.01.12 . .

Crnomarković, N., Belošević, S., Tomanović, I., Milićević, A.,& Stojanović, A.. (2020). Numerički kod za korekciju emisivnosti površinskih zona Hottel-ovog zonalnog modela razmene toplote zračenjem u ložištu sa sagorevanjem ugljenog praha. in Institut za nuklearne nauke Vinča : Laboratorija za termotehniku i energetiku
Univerzitet u Beogradu, Institut za nuklearne nauke "Vinča", Institut od nacionalnog značaja za Republiku Srbiju..
https://hdl.handle.net/21.15107/rcub_vinar_12290

Crnomarković N, Belošević S, Tomanović I, Milićević A, Stojanović A. Numerički kod za korekciju emisivnosti površinskih zona Hottel-ovog zonalnog modela razmene toplote zračenjem u ložištu sa sagorevanjem ugljenog praha. in Institut za nuklearne nauke Vinča : Laboratorija za termotehniku i energetiku. 2020;.
https://hdl.handle.net/21.15107/rcub_vinar_12290 .

Crnomarković, Nenad, Belošević, Srđan, Tomanović, Ivan, Milićević, Aleksandar, Stojanović, Andrijana, "Numerički kod za korekciju emisivnosti površinskih zona Hottel-ovog zonalnog modela razmene toplote zračenjem u ložištu sa sagorevanjem ugljenog praha" in Institut za nuklearne nauke Vinča : Laboratorija za termotehniku i energetiku (2020),
https://hdl.handle.net/21.15107/rcub_vinar_12290 .

TY  - JOUR
AU  - Milićević, Aleksandar
AU  - Belošević, Srđan
AU  - Crnomarković, Nenad Đ.
AU  - Tomanović, Ivan D.
AU  - Tucaković, Dragan R.
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8785
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 μm), the higher furnace exit gas temperature for 8 ˚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. © 2019 Elsevier Ltd
T2  - Applied Energy
T1  - Mathematical modelling and optimisation of lignite and wheat straw co-combustion in 350 MWe boiler furnace
VL  - 260
SP  - 114206
DO  - 10.1016/j.apenergy.2019.114206
ER  - 

@article{
author = "Milićević, Aleksandar and Belošević, Srđan and Crnomarković, Nenad Đ. and Tomanović, Ivan D. and Tucaković, Dragan R.",
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 μm), the higher furnace exit gas temperature for 8 ˚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. © 2019 Elsevier Ltd",
journal = "Applied Energy",
title = "Mathematical modelling and optimisation of lignite and wheat straw co-combustion in 350 MWe boiler furnace",
volume = "260",
pages = "114206",
doi = "10.1016/j.apenergy.2019.114206"
}

Milićević, A., Belošević, S., Crnomarković, N. Đ., Tomanović, I. D.,& Tucaković, D. R.. (2020). Mathematical modelling and optimisation of lignite and wheat straw co-combustion in 350 MWe boiler furnace. in Applied Energy, 260, 114206.
https://doi.org/10.1016/j.apenergy.2019.114206

Milićević A, Belošević S, Crnomarković NĐ, Tomanović ID, Tucaković DR. Mathematical modelling and optimisation of lignite and wheat straw co-combustion in 350 MWe boiler furnace. in Applied Energy. 2020;260:114206.
doi:10.1016/j.apenergy.2019.114206 .

Milićević, Aleksandar, Belošević, Srđan, Crnomarković, Nenad Đ., Tomanović, Ivan D., Tucaković, Dragan R., "Mathematical modelling and optimisation of lignite and wheat straw co-combustion in 350 MWe boiler furnace" in Applied Energy, 260 (2020):114206,
https://doi.org/10.1016/j.apenergy.2019.114206 . .

TY  - JOUR
AU  - Crnomarković, Nenad Đ.
AU  - Belošević, Srđan
AU  - Tomanović, Ivan D.
AU  - Milićević, Aleksandar
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8744
AB  - New application method of the zonal model in numerical simulations of pulverized coal-fired furnaces, continual corrections of the total exchange areas (CCTEA), is presented. The method is based on the corrections of the surface–surface, surface–volume, and volume–volume total exchange areas according to the changes of the surface zone emissivities during the iterative calculation of the numerical simulation and summation rules of the total exchange areas, so that it provides zero radiative exchange in an isothermal system. The method was developed for the homogeneous and uniform flame radiative properties. The results obtained by the CCTEA method were compared with the results obtained by the previously developed repeated run of numerical simulation (RRNS) method, based on multiple succesive run of the numerical simulation. The differences of the result obtained by the methods were found for various conditions of numerical investigations: initial wall emissivity, total extinction coefficient, and thickness of the ash deposit layer. The gas-phase phase radiative properties were determined by the simple gray gas model and weighted sum of gray gases model. Investigation showed small differences of the results obtained by the methods and their sensitivity to conditions of numerical investigation. The CCTEA method is an improvement of the RRNS method as it provides almost the same results after the single run of the numerical simulation and reduces the computation time. © 2019 Elsevier Ltd
T2  - International Journal of Heat and Mass Transfer
T1  - New application method of the zonal model for simulations of pulverized coal-fired furnaces based on correction of total exchange areas
VL  - 149
SP  - 119192
DO  - 10.1016/j.ijheatmasstransfer.2019.119192
ER  - 

@article{
author = "Crnomarković, Nenad Đ. and Belošević, Srđan and Tomanović, Ivan D. and Milićević, Aleksandar",
year = "2020",
abstract = "New application method of the zonal model in numerical simulations of pulverized coal-fired furnaces, continual corrections of the total exchange areas (CCTEA), is presented. The method is based on the corrections of the surface–surface, surface–volume, and volume–volume total exchange areas according to the changes of the surface zone emissivities during the iterative calculation of the numerical simulation and summation rules of the total exchange areas, so that it provides zero radiative exchange in an isothermal system. The method was developed for the homogeneous and uniform flame radiative properties. The results obtained by the CCTEA method were compared with the results obtained by the previously developed repeated run of numerical simulation (RRNS) method, based on multiple succesive run of the numerical simulation. The differences of the result obtained by the methods were found for various conditions of numerical investigations: initial wall emissivity, total extinction coefficient, and thickness of the ash deposit layer. The gas-phase phase radiative properties were determined by the simple gray gas model and weighted sum of gray gases model. Investigation showed small differences of the results obtained by the methods and their sensitivity to conditions of numerical investigation. The CCTEA method is an improvement of the RRNS method as it provides almost the same results after the single run of the numerical simulation and reduces the computation time. © 2019 Elsevier Ltd",
journal = "International Journal of Heat and Mass Transfer",
title = "New application method of the zonal model for simulations of pulverized coal-fired furnaces based on correction of total exchange areas",
volume = "149",
pages = "119192",
doi = "10.1016/j.ijheatmasstransfer.2019.119192"
}

Crnomarković, N. Đ., Belošević, S., Tomanović, I. D.,& Milićević, A.. (2020). New application method of the zonal model for simulations of pulverized coal-fired furnaces based on correction of total exchange areas. in International Journal of Heat and Mass Transfer, 149, 119192.
https://doi.org/10.1016/j.ijheatmasstransfer.2019.119192

Crnomarković NĐ, Belošević S, Tomanović ID, Milićević A. New application method of the zonal model for simulations of pulverized coal-fired furnaces based on correction of total exchange areas. in International Journal of Heat and Mass Transfer. 2020;149:119192.
doi:10.1016/j.ijheatmasstransfer.2019.119192 .

Crnomarković, Nenad Đ., Belošević, Srđan, Tomanović, Ivan D., Milićević, Aleksandar, "New application method of the zonal model for simulations of pulverized coal-fired furnaces based on correction of total exchange areas" in International Journal of Heat and Mass Transfer, 149 (2020):119192,
https://doi.org/10.1016/j.ijheatmasstransfer.2019.119192 . .

TY  - JOUR
AU  - Tomanović, Ivan D.
AU  - Belošević, Srđan
AU  - Crnomarković, Nenad Đ.
AU  - Milićević, Aleksandar
AU  - Tucaković, Dragan
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9762
AB  - The furnace sorbent injection is analysed numerically, focusing on its behaviour, in order to estimate CaCO3 sorbent utilisation. Comprehensive presentation of numerical results and profound analysis are provided to better understand the process under realistic conditions. The boiler load reduction, varied between 70 and 100%, did not disturb the processes in furnace. Insight into individual trajectories and their overall sulphation reveal that reduced load, in these cases, yield somewhat better SO2 reduction. Reactivity of the sorbent particles was better with the boiler load reduction, especially for particles passing near the flame core. The calcination and sulphation of sorbent particles increase with the boiler load decrease, due to the combined influence of extended particle residence time and more favourable reaction conditions. Thus the boiler load reduction can lead to better particle utilisation and higher SO2 capture. The conclusions are limited to the case-study conditions and impose the need for further investigation. Copyright © 2020 Inderscience Enterprises Ltd.
T2  - International Journal of Global Warming
T1  - Prediction of calcination and sulphation along the sorbent particle trajectories for desulphurisation in coal-fired furnace
VL  - 22
IS  - 4
SP  - 459
EP  - 482
DO  - 10.1504/IJGW.2020.111520
ER  - 

@article{
author = "Tomanović, Ivan D. and Belošević, Srđan and Crnomarković, Nenad Đ. and Milićević, Aleksandar and Tucaković, Dragan",
year = "2020",
abstract = "The furnace sorbent injection is analysed numerically, focusing on its behaviour, in order to estimate CaCO3 sorbent utilisation. Comprehensive presentation of numerical results and profound analysis are provided to better understand the process under realistic conditions. The boiler load reduction, varied between 70 and 100%, did not disturb the processes in furnace. Insight into individual trajectories and their overall sulphation reveal that reduced load, in these cases, yield somewhat better SO2 reduction. Reactivity of the sorbent particles was better with the boiler load reduction, especially for particles passing near the flame core. The calcination and sulphation of sorbent particles increase with the boiler load decrease, due to the combined influence of extended particle residence time and more favourable reaction conditions. Thus the boiler load reduction can lead to better particle utilisation and higher SO2 capture. The conclusions are limited to the case-study conditions and impose the need for further investigation. Copyright © 2020 Inderscience Enterprises Ltd.",
journal = "International Journal of Global Warming",
title = "Prediction of calcination and sulphation along the sorbent particle trajectories for desulphurisation in coal-fired furnace",
volume = "22",
number = "4",
pages = "459-482",
doi = "10.1504/IJGW.2020.111520"
}

Tomanović, I. D., Belošević, S., Crnomarković, N. Đ., Milićević, A.,& Tucaković, D.. (2020). Prediction of calcination and sulphation along the sorbent particle trajectories for desulphurisation in coal-fired furnace. in International Journal of Global Warming, 22(4), 459-482.
https://doi.org/10.1504/IJGW.2020.111520

Tomanović ID, Belošević S, Crnomarković NĐ, Milićević A, Tucaković D. Prediction of calcination and sulphation along the sorbent particle trajectories for desulphurisation in coal-fired furnace. in International Journal of Global Warming. 2020;22(4):459-482.
doi:10.1504/IJGW.2020.111520 .

Tomanović, Ivan D., Belošević, Srđan, Crnomarković, Nenad Đ., Milićević, Aleksandar, Tucaković, Dragan, "Prediction of calcination and sulphation along the sorbent particle trajectories for desulphurisation in coal-fired furnace" in International Journal of Global Warming, 22, no. 4 (2020):459-482,
https://doi.org/10.1504/IJGW.2020.111520 . .

TY  - JOUR
AU  - Tomanović, Ivan D.
AU  - Belošević, Srđan
AU  - Crnomarković, Nenad Đ.
AU  - Milićević, Aleksandar
AU  - Tucaković, Dragan R.
PY  - 2019
UR  - https://linkinghub.elsevier.com/retrieve/pii/S0017931018333271
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7866
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. © 2018 Elsevier Ltd
T2  - International Journal of Heat and Mass Transfer
T1  - Numerical modeling of in-furnace sulfur removal by sorbent injection during pulverized lignite combustion
VL  - 128
SP  - 98
EP  - 114
DO  - 10.1016/j.ijheatmasstransfer.2018.08.129
ER  - 

@article{
author = "Tomanović, Ivan D. and Belošević, Srđan and Crnomarković, Nenad Đ. and Milićević, Aleksandar and Tucaković, Dragan R.",
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. © 2018 Elsevier Ltd",
journal = "International Journal of Heat and Mass Transfer",
title = "Numerical modeling of in-furnace sulfur removal by sorbent injection during pulverized lignite combustion",
volume = "128",
pages = "98-114",
doi = "10.1016/j.ijheatmasstransfer.2018.08.129"
}

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

Tomanović ID, Belošević S, Crnomarković NĐ, Milićević A, Tucaković DR. 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 D., Belošević, Srđan, Crnomarković, Nenad Đ., Milićević, Aleksandar, Tucaković, Dragan R., "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  - Belošević, Srđan
AU  - Tomanović, Ivan D.
AU  - Crnomarković, Nenad Đ.
AU  - Milićević, Aleksandar
PY  - 2019
UR  - https://linkinghub.elsevier.com/retrieve/pii/S0360544219309351
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8212
AB  - Investigations suggest the need for better understanding of reactive gas-particle turbulent flow phenomena in full-scale energy systems. Numerical study was done in 350 MWe utility boiler tangentially fired furnace to clarify selected issues, such as turbulence modulation, particles dispersion, energy transfer between phases, combustion process and flame, by using an in-house developed combustion code. Numerical experiments demonstrated remarkable complexity of flow and interphase exchange. Maximal decrease in average turbulence kinetic energy of 33% due to dispersed phase was predicted for representative monodispersed coal; augmentation obtained for large particles could become attenuation due to the particles size change during combustion. Grinding fineness of polydispersed coal affected the flow, combustion and flame considerably. Fine grinding (R90 = 48.40%) provided ascending flame, higher furnace exit temperature and decrease in turbulence energy, compared with coarse grinding (R90 = 73.85%). Combustion of each particle size class of coal is completed at different vertical levels, influencing the flame position. Diagrams based on numerical predictions were proposed to enable efficient estimations of combustion and flame characteristics in the case-study furnace, for various coal qualities and mass fractions and changed distributions of coal particle size classes over the burner tiers, while necessity for further investigation was pointed out as well. © 2019 Elsevier Ltd
T2  - Energy
T1  - Full-scale CFD investigation of gas-particle flow, interactions and combustion in tangentially fired pulverized coal furnace
VL  - 179
SP  - 1036
EP  - 1053
DO  - 10.1016/j.energy.2019.05.066
ER  - 

@article{
author = "Belošević, Srđan and Tomanović, Ivan D. and Crnomarković, Nenad Đ. and Milićević, Aleksandar",
year = "2019",
abstract = "Investigations suggest the need for better understanding of reactive gas-particle turbulent flow phenomena in full-scale energy systems. Numerical study was done in 350 MWe utility boiler tangentially fired furnace to clarify selected issues, such as turbulence modulation, particles dispersion, energy transfer between phases, combustion process and flame, by using an in-house developed combustion code. Numerical experiments demonstrated remarkable complexity of flow and interphase exchange. Maximal decrease in average turbulence kinetic energy of 33% due to dispersed phase was predicted for representative monodispersed coal; augmentation obtained for large particles could become attenuation due to the particles size change during combustion. Grinding fineness of polydispersed coal affected the flow, combustion and flame considerably. Fine grinding (R90 = 48.40%) provided ascending flame, higher furnace exit temperature and decrease in turbulence energy, compared with coarse grinding (R90 = 73.85%). Combustion of each particle size class of coal is completed at different vertical levels, influencing the flame position. Diagrams based on numerical predictions were proposed to enable efficient estimations of combustion and flame characteristics in the case-study furnace, for various coal qualities and mass fractions and changed distributions of coal particle size classes over the burner tiers, while necessity for further investigation was pointed out as well. © 2019 Elsevier Ltd",
journal = "Energy",
title = "Full-scale CFD investigation of gas-particle flow, interactions and combustion in tangentially fired pulverized coal furnace",
volume = "179",
pages = "1036-1053",
doi = "10.1016/j.energy.2019.05.066"
}

Belošević, S., Tomanović, I. D., Crnomarković, N. Đ.,& Milićević, A.. (2019). Full-scale CFD investigation of gas-particle flow, interactions and combustion in tangentially fired pulverized coal furnace. in Energy, 179, 1036-1053.
https://doi.org/10.1016/j.energy.2019.05.066

Belošević S, Tomanović ID, Crnomarković NĐ, Milićević A. Full-scale CFD investigation of gas-particle flow, interactions and combustion in tangentially fired pulverized coal furnace. in Energy. 2019;179:1036-1053.
doi:10.1016/j.energy.2019.05.066 .

Belošević, Srđan, Tomanović, Ivan D., Crnomarković, Nenad Đ., Milićević, Aleksandar, "Full-scale CFD investigation of gas-particle flow, interactions and combustion in tangentially fired pulverized coal furnace" in Energy, 179 (2019):1036-1053,
https://doi.org/10.1016/j.energy.2019.05.066 . .

TY  - JOUR
AU  - Milićević, Aleksandar
AU  - Belošević, Srđan
AU  - Tomanović, Ivan D.
AU  - Crnomarković, Nenad Đ.
AU  - Tucaković, Dragan R.
PY  - 2018
UR  - http://www.doiserbia.nb.rs/Article.aspx?ID=0354-98361700206M
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7628
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.
T2  - Thermal Science
T1  - Development of mathematical model for co-firing pulverized coal and biomass in experimental furnace
VL  - 22
IS  - 1 (Part B)
SP  - 709
EP  - 719
DO  - 10.2298/TSCI170525206M
ER  - 

@article{
author = "Milićević, Aleksandar and Belošević, Srđan and Tomanović, Ivan D. and Crnomarković, Nenad Đ. and Tucaković, Dragan R.",
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.",
journal = "Thermal Science",
title = "Development of mathematical model for co-firing pulverized coal and biomass in experimental furnace",
volume = "22",
number = "1 (Part B)",
pages = "709-719",
doi = "10.2298/TSCI170525206M"
}

Milićević, A., Belošević, S., Tomanović, I. D., Crnomarković, N. Đ.,& Tucaković, D. R.. (2018). Development of mathematical model for co-firing pulverized coal and biomass in experimental furnace. in Thermal Science, 22(1 (Part B)), 709-719.
https://doi.org/10.2298/TSCI170525206M

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

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

TY  - JOUR
AU  - Crnomarković, Nenad Đ.
AU  - Belošević, Srđan
AU  - Nemoda, Stevan
AU  - Tomanović, Ivan D.
AU  - Milićević, Aleksandar
PY  - 2018
UR  - http://casopisi.junis.ni.ac.rs/index.php/FUMechEng/article/view/3683
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7820
AB  - Determination of the wall variables (wall emissivities, wall temperatures, and heat fluxes) when the zonal model of radiation is used in numerical simulations of processes inside a pulverized coal-fired furnaces is described. Two methods for determination of the wall variables, i.e., a repeated run of numerical simulation (RRNS) and a temporary correction of the total exchange areas (TCTEA) are compared. Investigation was carried out for three values of the flame total extinction coefficient and four values of the initial wall emissivities. Differences of the wall variables were determined using the arithmetic means (AMs) of the relative differences. The AMs of the relative differences of the wall variables increased with an increase in the flame total extinction coefficient and changed a little with an increase in the initial values of the wall emissivities. For the selected furnace, the smallest differences of the wall variables were obtained for Kt=0.3 m-1 and ew,in=0.7. Although both methods can be used for determination of the wall variables, the RRNS method was recommended because the manipulation with files was easier for it. mmended because the manipulation with files was easier for it.
T2  - Facta Universitatis, Series: Mechanical Engineering
T1  - Determination of the wall variables within the zonal model of radiation inside a pulverized coal-fired furnace
VL  - 16
IS  - 2
SP  - 219
EP  - 232
DO  - 10.22190/FUME180227021C
ER  - 

@article{
author = "Crnomarković, Nenad Đ. and Belošević, Srđan and Nemoda, Stevan and Tomanović, Ivan D. and Milićević, Aleksandar",
year = "2018",
abstract = "Determination of the wall variables (wall emissivities, wall temperatures, and heat fluxes) when the zonal model of radiation is used in numerical simulations of processes inside a pulverized coal-fired furnaces is described. Two methods for determination of the wall variables, i.e., a repeated run of numerical simulation (RRNS) and a temporary correction of the total exchange areas (TCTEA) are compared. Investigation was carried out for three values of the flame total extinction coefficient and four values of the initial wall emissivities. Differences of the wall variables were determined using the arithmetic means (AMs) of the relative differences. The AMs of the relative differences of the wall variables increased with an increase in the flame total extinction coefficient and changed a little with an increase in the initial values of the wall emissivities. For the selected furnace, the smallest differences of the wall variables were obtained for Kt=0.3 m-1 and ew,in=0.7. Although both methods can be used for determination of the wall variables, the RRNS method was recommended because the manipulation with files was easier for it. mmended because the manipulation with files was easier for it.",
journal = "Facta Universitatis, Series: Mechanical Engineering",
title = "Determination of the wall variables within the zonal model of radiation inside a pulverized coal-fired furnace",
volume = "16",
number = "2",
pages = "219-232",
doi = "10.22190/FUME180227021C"
}

Crnomarković, N. Đ., Belošević, S., Nemoda, S., Tomanović, I. D.,& Milićević, A.. (2018). Determination of the wall variables within the zonal model of radiation inside a pulverized coal-fired furnace. in Facta Universitatis, Series: Mechanical Engineering, 16(2), 219-232.
https://doi.org/10.22190/FUME180227021C

Crnomarković NĐ, Belošević S, Nemoda S, Tomanović ID, Milićević A. Determination of the wall variables within the zonal model of radiation inside a pulverized coal-fired furnace. in Facta Universitatis, Series: Mechanical Engineering. 2018;16(2):219-232.
doi:10.22190/FUME180227021C .

Crnomarković, Nenad Đ., Belošević, Srđan, Nemoda, Stevan, Tomanović, Ivan D., Milićević, Aleksandar, "Determination of the wall variables within the zonal model of radiation inside a pulverized coal-fired furnace" in Facta Universitatis, Series: Mechanical Engineering, 16, no. 2 (2018):219-232,
https://doi.org/10.22190/FUME180227021C . .

TY  - JOUR
AU  - Tomanović, Ivan D.
AU  - Belošević, Srđan
AU  - Milićević, Aleksandar
AU  - Crnomarković, Nenad Đ.
PY  - 2018
UR  - http://www.doiserbia.nb.rs/Article.aspx?ID=0367-598X1800025T
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8109
AB  - Several models considering the pulverized sorbent reactions with pollutant gases were developed over the past years. In this paper, we present a detailed overview of available models for direct furnace injection of pulverized calcium sorbent suitable for potential application in CFD codes, with respect to implementation difficulty and computational resources demand. Depending on the model, variations in result accuracy, data output, and computational power required may occur. Some authors separate the model of calcination reaction, combined with the sintering model, and afterwards model the sulfation. Other authors assume the calcination to be instantaneous, and focus the modelling efforts toward the sulfation reaction, adding the sintering effects as a parameter in the efficiency coefficient. Simple models quantify the reaction effects, while more complex models attempt to describe and explain internal particle reactions through different approaches to modelling of the particle internal structure.
T2  - Hemijska industrija
T1  - Calcium based sorbent calcination and sintering reaction models overview
VL  - 72
IS  - 6
SP  - 329
EP  - 339
DO  - 10.2298/HEMIND180703025T
ER  - 

@article{
author = "Tomanović, Ivan D. and Belošević, Srđan and Milićević, Aleksandar and Crnomarković, Nenad Đ.",
year = "2018",
abstract = "Several models considering the pulverized sorbent reactions with pollutant gases were developed over the past years. In this paper, we present a detailed overview of available models for direct furnace injection of pulverized calcium sorbent suitable for potential application in CFD codes, with respect to implementation difficulty and computational resources demand. Depending on the model, variations in result accuracy, data output, and computational power required may occur. Some authors separate the model of calcination reaction, combined with the sintering model, and afterwards model the sulfation. Other authors assume the calcination to be instantaneous, and focus the modelling efforts toward the sulfation reaction, adding the sintering effects as a parameter in the efficiency coefficient. Simple models quantify the reaction effects, while more complex models attempt to describe and explain internal particle reactions through different approaches to modelling of the particle internal structure.",
journal = "Hemijska industrija",
title = "Calcium based sorbent calcination and sintering reaction models overview",
volume = "72",
number = "6",
pages = "329-339",
doi = "10.2298/HEMIND180703025T"
}

Tomanović, I. D., Belošević, S., Milićević, A.,& Crnomarković, N. Đ.. (2018). Calcium based sorbent calcination and sintering reaction models overview. in Hemijska industrija, 72(6), 329-339.
https://doi.org/10.2298/HEMIND180703025T

Tomanović ID, Belošević S, Milićević A, Crnomarković NĐ. Calcium based sorbent calcination and sintering reaction models overview. in Hemijska industrija. 2018;72(6):329-339.
doi:10.2298/HEMIND180703025T .

Tomanović, Ivan D., Belošević, Srđan, Milićević, Aleksandar, Crnomarković, Nenad Đ., "Calcium based sorbent calcination and sintering reaction models overview" in Hemijska industrija, 72, no. 6 (2018):329-339,
https://doi.org/10.2298/HEMIND180703025T . .

TY  - THES
AU  - Milićević, Aleksandar
PY  - 2018
UR  - http://eteze.bg.ac.rs/application/showtheses?thesesId=7050
UR  - https://fedorabg.bg.ac.rs/fedora/get/o:20677/bdef:Content/download
UR  - https://plus.sr.cobiss.net/opac7/bib/514975651
UR  - http://nardus.mpn.gov.rs/123456789/11731
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8607
AB  - Using fossil fuels for energy purposes leads to continuous increase in the concentration of CO2, CO, SOx, NOx and other harmful oxides in the atmosphere that cause global warming, i.e. greenhouse effect, and other negative influences, like acid rains and photochemical smog. The main motivation for co-firing coal with biomass is to reduce CO2 emissions as the so-called greenhouse gas because the greatest impact on global warming, but also it could contribute to reduction of nitrogen and sulfur oxides, depending on composition of the fuel. Co-firing coal and biomass in coal-fired utility boilers for producing the electricity represents efficient and low-cost option which contributes to the utilization of biomass as a renewable energy source...
AB  - Коришћењем фосилних горива у енергетске сврхе долази до непрестаног повећања концентрације CO2, CO, SOx, NOx и других штетних оксида у атмосфери који доводе до појаве глобалног загревања, тј. ефекта ,,стаклене баште”, и других нежељених утицаја, као што су киселе кише и фотохемијски смог. Главна мотивација за косагоревање угља са биомасом је смањење емисије CO2 као такозваног гаса стаклене баште који има највећи утицај на глобално загревање, али се може допринети и редукцији емисија SOx и NOx, зависно од састава горива. Косагоревање угља и биомасе у котловима на угаљ за производњу електричне енергије представља ефикасну и исплативу опцију која доприноси и искоришћењу биомасе као обновљивог извора енергије...
PB  - Универзитет у Београду, Машински факултет
T2  - Универзитет у Београду
T1  - Математичко моделирање и оптимизација процеса у ложишту на спрашени угаљ при директном косагоревању са биомасом
UR  - https://hdl.handle.net/21.15107/rcub_nardus_11731
ER  - 

@phdthesis{
author = "Milićević, Aleksandar",
year = "2018",
abstract = "Using fossil fuels for energy purposes leads to continuous increase in the concentration of CO2, CO, SOx, NOx and other harmful oxides in the atmosphere that cause global warming, i.e. greenhouse effect, and other negative influences, like acid rains and photochemical smog. The main motivation for co-firing coal with biomass is to reduce CO2 emissions as the so-called greenhouse gas because the greatest impact on global warming, but also it could contribute to reduction of nitrogen and sulfur oxides, depending on composition of the fuel. Co-firing coal and biomass in coal-fired utility boilers for producing the electricity represents efficient and low-cost option which contributes to the utilization of biomass as a renewable energy source..., Коришћењем фосилних горива у енергетске сврхе долази до непрестаног повећања концентрације CO2, CO, SOx, NOx и других штетних оксида у атмосфери који доводе до појаве глобалног загревања, тј. ефекта ,,стаклене баште”, и других нежељених утицаја, као што су киселе кише и фотохемијски смог. Главна мотивација за косагоревање угља са биомасом је смањење емисије CO2 као такозваног гаса стаклене баште који има највећи утицај на глобално загревање, али се може допринети и редукцији емисија SOx и NOx, зависно од састава горива. Косагоревање угља и биомасе у котловима на угаљ за производњу електричне енергије представља ефикасну и исплативу опцију која доприноси и искоришћењу биомасе као обновљивог извора енергије...",
publisher = "Универзитет у Београду, Машински факултет",
journal = "Универзитет у Београду",
title = "Математичко моделирање и оптимизација процеса у ложишту на спрашени угаљ при директном косагоревању са биомасом",
url = "https://hdl.handle.net/21.15107/rcub_nardus_11731"
}

Milićević, A.. (2018). Математичко моделирање и оптимизација процеса у ложишту на спрашени угаљ при директном косагоревању са биомасом. in Универзитет у Београду
Универзитет у Београду, Машински факултет..
https://hdl.handle.net/21.15107/rcub_nardus_11731

Milićević A. Математичко моделирање и оптимизација процеса у ложишту на спрашени угаљ при директном косагоревању са биомасом. in Универзитет у Београду. 2018;.
https://hdl.handle.net/21.15107/rcub_nardus_11731 .

Milićević, Aleksandar, "Математичко моделирање и оптимизација процеса у ложишту на спрашени угаљ при директном косагоревању са биомасом" in Универзитет у Београду (2018),
https://hdl.handle.net/21.15107/rcub_nardus_11731 .

TY  - JOUR
AU  - Crnomarković, Nenad Đ.
AU  - Belošević, Srđan
AU  - Tomanović, Ivan D.
AU  - Milićević, Aleksandar
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1822
AB  - The effects of the number of significant figures (NSF) in the interpolation polynomial coefficients (IPCs) of the weighted sum of gray gases model (WSGM) on results of numerical investigations and WSGM optimization were investigated. The investigation was conducted using numerical simulations of the processes inside a pulverized coal-fired furnace. The radiative properties of the gas phase were determined using the simple gray gas model (SG), two-term WSGM (W2), and three-term WSGM (W3). Ten sets of the IPCs with the same NSF were formed for every weighting coefficient in both W2 and W3. The average and maximal relative difference values of the flame temperatures, wall temperatures, and wall heat fluxes were determined. The investigation showed that the results of numerical investigations were affected by the NSF unless it exceeded certain value. The increase in the NSF did not necessarily lead to WSGM optimization. The combination of the NSF (CNSF) was the necessary requirement for WSGM optimization.
T2  - Journal of Thermal Science
T1  - Weighted Sum of Gray Gases Model Optimization for Numerical Investigations of Processes inside Pulverized Coal-Fired Furnaces
VL  - 26
IS  - 6
SP  - 552
EP  - 559
DO  - 10.1007/s11630-017-0973-0
ER  - 

@article{
author = "Crnomarković, Nenad Đ. and Belošević, Srđan and Tomanović, Ivan D. and Milićević, Aleksandar",
year = "2017",
abstract = "The effects of the number of significant figures (NSF) in the interpolation polynomial coefficients (IPCs) of the weighted sum of gray gases model (WSGM) on results of numerical investigations and WSGM optimization were investigated. The investigation was conducted using numerical simulations of the processes inside a pulverized coal-fired furnace. The radiative properties of the gas phase were determined using the simple gray gas model (SG), two-term WSGM (W2), and three-term WSGM (W3). Ten sets of the IPCs with the same NSF were formed for every weighting coefficient in both W2 and W3. The average and maximal relative difference values of the flame temperatures, wall temperatures, and wall heat fluxes were determined. The investigation showed that the results of numerical investigations were affected by the NSF unless it exceeded certain value. The increase in the NSF did not necessarily lead to WSGM optimization. The combination of the NSF (CNSF) was the necessary requirement for WSGM optimization.",
journal = "Journal of Thermal Science",
title = "Weighted Sum of Gray Gases Model Optimization for Numerical Investigations of Processes inside Pulverized Coal-Fired Furnaces",
volume = "26",
number = "6",
pages = "552-559",
doi = "10.1007/s11630-017-0973-0"
}

Crnomarković, N. Đ., Belošević, S., Tomanović, I. D.,& Milićević, A.. (2017). Weighted Sum of Gray Gases Model Optimization for Numerical Investigations of Processes inside Pulverized Coal-Fired Furnaces. in Journal of Thermal Science, 26(6), 552-559.
https://doi.org/10.1007/s11630-017-0973-0

Crnomarković NĐ, Belošević S, Tomanović ID, Milićević A. Weighted Sum of Gray Gases Model Optimization for Numerical Investigations of Processes inside Pulverized Coal-Fired Furnaces. in Journal of Thermal Science. 2017;26(6):552-559.
doi:10.1007/s11630-017-0973-0 .

Crnomarković, Nenad Đ., Belošević, Srđan, Tomanović, Ivan D., Milićević, Aleksandar, "Weighted Sum of Gray Gases Model Optimization for Numerical Investigations of Processes inside Pulverized Coal-Fired Furnaces" in Journal of Thermal Science, 26, no. 6 (2017):552-559,
https://doi.org/10.1007/s11630-017-0973-0 . .

TY  - JOUR
AU  - Belošević, Srđan
AU  - Tomanović, Ivan D.
AU  - Crnomarković, Nenad Đ.
AU  - Milićević, Aleksandar
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7187
AB  - A cost-effective reduction of NO, emission from utility boilers firing pulverized coal can be achieved by means of combustion modifications in the furnace. It is also essential to provide the pulverized coal dfffitsion flame control. Mathematical modeling is regularly used for analysis and optimization of complex turbulent reactive flows and mutually dependent processes in coal combustion furnaces. In the numerical study, predictions were performed by an in-house developed comprehensive three-dimensional differential model of flow, combustion and heat/mass transfer with submodel of the fuel- and thermal-NO formation/destruction reactions. Influence of various operating conditions in the case-study utility boiler tangentially fired furnace, such as distribution of both the fuel and the combustion air over the burners and tiers, fuel-bound nitrogen content and grinding fineness of coal were investigated individually and in combination. Mechanisms of NO formation and depletion were found to be strongly affected by flow, temperature and gas mixture components concentration fields. Proper modifications of combustion process can provide more than 30% of the NO, emission abatement, approaching the corresponding emission limits, with simultaneous control of the flame geometry and position within the furnace. This kind of complex numerical experiments provides conditions for improvements of the power plant furnaces exploitation, with respect to high efficiency, operation flexibility and low emission.
T2  - Thermal Science
T1  - Modeling of Pulverized Coal Combustion for In-Furnace Nox Reduction and Flame Control
VL  - 21
SP  - S597
EP  - S615
DO  - 10.2298/TSCI160604186B
ER  - 

@article{
author = "Belošević, Srđan and Tomanović, Ivan D. and Crnomarković, Nenad Đ. and Milićević, Aleksandar",
year = "2017",
abstract = "A cost-effective reduction of NO, emission from utility boilers firing pulverized coal can be achieved by means of combustion modifications in the furnace. It is also essential to provide the pulverized coal dfffitsion flame control. Mathematical modeling is regularly used for analysis and optimization of complex turbulent reactive flows and mutually dependent processes in coal combustion furnaces. In the numerical study, predictions were performed by an in-house developed comprehensive three-dimensional differential model of flow, combustion and heat/mass transfer with submodel of the fuel- and thermal-NO formation/destruction reactions. Influence of various operating conditions in the case-study utility boiler tangentially fired furnace, such as distribution of both the fuel and the combustion air over the burners and tiers, fuel-bound nitrogen content and grinding fineness of coal were investigated individually and in combination. Mechanisms of NO formation and depletion were found to be strongly affected by flow, temperature and gas mixture components concentration fields. Proper modifications of combustion process can provide more than 30% of the NO, emission abatement, approaching the corresponding emission limits, with simultaneous control of the flame geometry and position within the furnace. This kind of complex numerical experiments provides conditions for improvements of the power plant furnaces exploitation, with respect to high efficiency, operation flexibility and low emission.",
journal = "Thermal Science",
title = "Modeling of Pulverized Coal Combustion for In-Furnace Nox Reduction and Flame Control",
volume = "21",
pages = "S597-S615",
doi = "10.2298/TSCI160604186B"
}

Belošević, S., Tomanović, I. D., Crnomarković, N. Đ.,& Milićević, A.. (2017). Modeling of Pulverized Coal Combustion for In-Furnace Nox Reduction and Flame Control. in Thermal Science, 21, S597-S615.
https://doi.org/10.2298/TSCI160604186B

Belošević S, Tomanović ID, Crnomarković NĐ, Milićević A. Modeling of Pulverized Coal Combustion for In-Furnace Nox Reduction and Flame Control. in Thermal Science. 2017;21:S597-S615.
doi:10.2298/TSCI160604186B .

Belošević, Srđan, Tomanović, Ivan D., Crnomarković, Nenad Đ., Milićević, Aleksandar, "Modeling of Pulverized Coal Combustion for In-Furnace Nox Reduction and Flame Control" in Thermal Science, 21 (2017):S597-S615,
https://doi.org/10.2298/TSCI160604186B . .

TY  - JOUR
AU  - Stanković, Branislav D.
AU  - Belošević, Srđan
AU  - Crnomarković, Nenad Đ.
AU  - Stojanović, Andrijana D.
AU  - Tomanović, Ivan D.
AU  - Milićević, Aleksandar
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7188
AB  - The essential ideas of investigations of turbulent flow in a straight rectangular duct are chronologically presented. Fundamentally significant experimental and theoretical studies for mathematical modeling and numerical computations of this flow configuration are analyzed. An important physical aspect of this type of flow is presence of secondary motion in the plane perpendicular to the streamwise direction, which is of interest from both the engineering and the scientific viewpoints. The key facts for a task of turbulence modeling and optimal choice of the turbulence model are obtained through careful examination of physical mechanisms that generate secondary flows.
T2  - Thermal Science
T1  - Specific Aspects of Turbulent Flow in Rectangular Ducts
VL  - 21
SP  - S663
EP  - S678
DO  - 10.2298/TSCI160201189S
ER  - 

@article{
author = "Stanković, Branislav D. and Belošević, Srđan and Crnomarković, Nenad Đ. and Stojanović, Andrijana D. and Tomanović, Ivan D. and Milićević, Aleksandar",
year = "2017",
abstract = "The essential ideas of investigations of turbulent flow in a straight rectangular duct are chronologically presented. Fundamentally significant experimental and theoretical studies for mathematical modeling and numerical computations of this flow configuration are analyzed. An important physical aspect of this type of flow is presence of secondary motion in the plane perpendicular to the streamwise direction, which is of interest from both the engineering and the scientific viewpoints. The key facts for a task of turbulence modeling and optimal choice of the turbulence model are obtained through careful examination of physical mechanisms that generate secondary flows.",
journal = "Thermal Science",
title = "Specific Aspects of Turbulent Flow in Rectangular Ducts",
volume = "21",
pages = "S663-S678",
doi = "10.2298/TSCI160201189S"
}

Stanković, B. D., Belošević, S., Crnomarković, N. Đ., Stojanović, A. D., Tomanović, I. D.,& Milićević, A.. (2017). Specific Aspects of Turbulent Flow in Rectangular Ducts. in Thermal Science, 21, S663-S678.
https://doi.org/10.2298/TSCI160201189S

Stanković BD, Belošević S, Crnomarković NĐ, Stojanović AD, Tomanović ID, Milićević A. Specific Aspects of Turbulent Flow in Rectangular Ducts. in Thermal Science. 2017;21:S663-S678.
doi:10.2298/TSCI160201189S .

Stanković, Branislav D., Belošević, Srđan, Crnomarković, Nenad Đ., Stojanović, Andrijana D., Tomanović, Ivan D., Milićević, Aleksandar, "Specific Aspects of Turbulent Flow in Rectangular Ducts" in Thermal Science, 21 (2017):S663-S678,
https://doi.org/10.2298/TSCI160201189S . .

TY  - JOUR
AU  - Tomanović, Ivan D.
AU  - Belošević, Srđan
AU  - Milićević, Aleksandar
AU  - Crnomarković, Nenad Đ.
AU  - Tucaković, Dragan R.
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7189
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.
T2  - Thermal Science
T1  - Numerical Tracking of Sorbent Particles and Distribution During Gas Desulfurization in Pulverized Coal-Fired Furnace
VL  - 21
SP  - S759
EP  - S769
DO  - 10.2298/TSCI160212196T
ER  - 

@article{
author = "Tomanović, Ivan D. and Belošević, Srđan and Milićević, Aleksandar and Crnomarković, Nenad Đ. and Tucaković, Dragan R.",
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.",
journal = "Thermal Science",
title = "Numerical Tracking of Sorbent Particles and Distribution During Gas Desulfurization in Pulverized Coal-Fired Furnace",
volume = "21",
pages = "S759-S769",
doi = "10.2298/TSCI160212196T"
}

Tomanović, I. D., Belošević, S., Milićević, A., Crnomarković, N. Đ.,& Tucaković, D. R.. (2017). Numerical Tracking of Sorbent Particles and Distribution During Gas Desulfurization in Pulverized Coal-Fired Furnace. in Thermal Science, 21, S759-S769.
https://doi.org/10.2298/TSCI160212196T

Tomanović ID, Belošević S, Milićević A, Crnomarković NĐ, Tucaković DR. 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, Milićević, Aleksandar, Crnomarković, Nenad Đ., Tucaković, Dragan R., "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  - Belošević, Srđan
AU  - Tomanović, Ivan D.
AU  - Crnomarković, Nenad Đ.
AU  - Milićević, Aleksandar
AU  - Tucaković, Dragan R.
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/949
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. (C) 2015 Elsevier Ltd. All rights reserved.
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
VL  - 94
SP  - 657
EP  - 669
DO  - 10.1016/j.applthermaleng.2015.10.162
ER  - 

@article{
author = "Belošević, Srđan and Tomanović, Ivan D. and Crnomarković, Nenad Đ. and Milićević, Aleksandar and Tucaković, Dragan R.",
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. (C) 2015 Elsevier Ltd. All rights reserved.",
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",
volume = "94",
pages = "657-669",
doi = "10.1016/j.applthermaleng.2015.10.162"
}

Belošević, S., Tomanović, I. D., Crnomarković, N. Đ., Milićević, A.,& Tucaković, D. R.. (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, 94, 657-669.
https://doi.org/10.1016/j.applthermaleng.2015.10.162

Belošević S, Tomanović ID, Crnomarković NĐ, Milićević A, Tucaković DR. 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, Tomanović, Ivan D., Crnomarković, Nenad Đ., Milićević, Aleksandar, Tucaković, Dragan R., "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
AU  - Tomanović, Ivan D.
AU  - Crnomarković, Nenad Đ.
AU  - Milićević, Aleksandar
AU  - Tucaković, Dragan R.
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1143
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.
T2  - Thermal Science
T1  - Modeling and Optimization of Processes for Clean and Efficient Pulverized Coal Combustion in Utility Boilers
VL  - 20
SP  - S183
EP  - S196
DO  - 10.2298/TSCI150604223B
ER  - 

@article{
author = "Belošević, Srđan and Tomanović, Ivan D. and Crnomarković, Nenad Đ. and Milićević, Aleksandar and Tucaković, Dragan R.",
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.",
journal = "Thermal Science",
title = "Modeling and Optimization of Processes for Clean and Efficient Pulverized Coal Combustion in Utility Boilers",
volume = "20",
pages = "S183-S196",
doi = "10.2298/TSCI150604223B"
}

Belošević, S., Tomanović, I. D., Crnomarković, N. Đ., Milićević, A.,& Tucaković, D. R.. (2016). Modeling and Optimization of Processes for Clean and Efficient Pulverized Coal Combustion in Utility Boilers. in Thermal Science, 20, S183-S196.
https://doi.org/10.2298/TSCI150604223B

Belošević S, Tomanović ID, Crnomarković NĐ, Milićević A, Tucaković DR. 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, Tomanović, Ivan D., Crnomarković, Nenad Đ., Milićević, Aleksandar, Tucaković, Dragan R., "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 . .