Cvetinović, Dejan

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Authority KeyName Variants
orcid::0000-0001-5193-3909
  • Cvetinović, Dejan (28)
Projects
Pollution Reduction from Thermal Power Plants of the Public Enterprise “Electric Power Industry of Serbia” Domestic Lignite Quality and Combustion Technology Enhancement for Energy Efficiency Increase and Reduction of Harmful Gases and Particulate Matter Emissions from Thermal Power Plants of Public Enterprise ”Electric Power Industry of Serbia”
Development and improvement of technologies for energy efficient and environmentally sound use of several types of agricultural and forest biomass and possible utilization for cogeneration European Commission 6th FP through the Marie Curie Actions project INECSE (Early Stage Research Training in Integrated Energy Conversion for a Sustainable Environment) [MEST-CT-2005-021018]
European Commission [MEST-CT-2005-021018] Fundamental Research Funds for the Central Universities (30918015101)
RELCOM - Reliable and Efficient Combustion of Oxygen/Coal/Recycled Flue Gas Mixtures Advanced analytical, numerical and analysis methods of applied fluid mechanics and complex systems
Fluidized bed combustion facility improvements as a step forward in developing energy efficient and environmentally sound waste combustion technology in fluidized bed combustors Research and Development of Advanced Design Approaches for High Performance Composite Rotor Blades
National Natural Science Fund of China (51376093) National Natural Science Fund of China (51776098)
(Polish) National Research Development Centre [SP/E/2/666420/10] Public Enterprise Electric Power Industry of Serbia
Public Enterprise Electric power industry of Serbia, Belgrade, Serbia Public Enterprise Electric Power Industry of Serbia, Belgrade, Serbia
Public Enterprise Electric power industry of Serbia, Belgrade, Serbia, European Commission 6th FP through the Marie Curie Actions project INECSE (Early Stage Research Training in Integrated Energy Conversion for a Sustainable Environment), EU [MEST-CT-2005-021018] Research Fund for Coal and Steel project: Application of the biomass, oxyfuel and flameless combustion for the utilisation of pulverised coals for electricity generation (BOFCom) [RFCR-CT-2006-00010]
Scientific Fund of the Republic of Serbia Six Talent Peaks project of Jiangsu Province, China (2015-DZXX-008)

Author's Bibliography

Review of the investigations of pulverized coal combustion processes in large power plants in laboratory for thermal engineering and energy: Part B

Stefanović, Predrag Lj.; Cvetinović, Dejan; Marković, Zoran M.; Erić, Milić D.; Oka, Simeon N.; Repić, Branislav

(2019)

TY  - JOUR
AU  - Stefanović, Predrag Lj.
AU  - Cvetinović, Dejan
AU  - Marković, Zoran M.
AU  - Erić, Milić D.
AU  - Oka, Simeon N.
AU  - Repić, Branislav
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8981
AB  - Paper presents short review of research problems, applied methods for solving problems and main results obtained by the researchers in Laboratory for Ther-mal Engineering and Energy (LTE) of the "Vinca" Institute of Nuclear Sciences, Belgrade, Serbia dealing with pulverized coal combustion processes and tech-nologies for reduction of pollutions problems at thermal power plants in a period since 2000. The presented results were published in numerous studies realized for different users, Ph. D., Masters, and Specialist thesis, in international and domestic scientific journals and monographs, presented at numerous internation-al and domestic scientific conferences, etc. Presented research projects and re-sults of applied research projects realized at pulverized coal combustion thermal power plants clearly show that LTE team was involved in key activities of reha-bilitation and modernization, including implementation of best available technol-ogies for pollution reduction at thermal power plants, in the region of South East Europe.
T2  - Thermal Science
T1  - Review of the investigations of pulverized coal combustion processes in large power plants in laboratory for thermal engineering and energy: Part B
VL  - 23
IS  - Suppl. 5
SP  - 1611
EP  - 1626
DO  - 10.2298/TSCI19S5611R
ER  - 
@article{
author = "Stefanović, Predrag Lj. and Cvetinović, Dejan and Marković, Zoran M. and Erić, Milić D. and Oka, Simeon N. and Repić, Branislav",
year = "2019",
abstract = "Paper presents short review of research problems, applied methods for solving problems and main results obtained by the researchers in Laboratory for Ther-mal Engineering and Energy (LTE) of the "Vinca" Institute of Nuclear Sciences, Belgrade, Serbia dealing with pulverized coal combustion processes and tech-nologies for reduction of pollutions problems at thermal power plants in a period since 2000. The presented results were published in numerous studies realized for different users, Ph. D., Masters, and Specialist thesis, in international and domestic scientific journals and monographs, presented at numerous internation-al and domestic scientific conferences, etc. Presented research projects and re-sults of applied research projects realized at pulverized coal combustion thermal power plants clearly show that LTE team was involved in key activities of reha-bilitation and modernization, including implementation of best available technol-ogies for pollution reduction at thermal power plants, in the region of South East Europe.",
journal = "Thermal Science",
title = "Review of the investigations of pulverized coal combustion processes in large power plants in laboratory for thermal engineering and energy: Part B",
volume = "23",
number = "Suppl. 5",
pages = "1611-1626",
doi = "10.2298/TSCI19S5611R"
}
Stefanović, P. Lj., Cvetinović, D., Marković, Z. M., Erić, M. D., Oka, S. N.,& Repić, B.. (2019). Review of the investigations of pulverized coal combustion processes in large power plants in laboratory for thermal engineering and energy: Part B. in Thermal Science, 23(Suppl. 5), 1611-1626.
https://doi.org/10.2298/TSCI19S5611R
Stefanović PL, Cvetinović D, Marković ZM, Erić MD, Oka SN, Repić B. Review of the investigations of pulverized coal combustion processes in large power plants in laboratory for thermal engineering and energy: Part B. in Thermal Science. 2019;23(Suppl. 5):1611-1626.
doi:10.2298/TSCI19S5611R .
Stefanović, Predrag Lj., Cvetinović, Dejan, Marković, Zoran M., Erić, Milić D., Oka, Simeon N., Repić, Branislav, "Review of the investigations of pulverized coal combustion processes in large power plants in laboratory for thermal engineering and energy: Part B" in Thermal Science, 23, no. Suppl. 5 (2019):1611-1626,
https://doi.org/10.2298/TSCI19S5611R . .

Pljevlja lignite carbon emission characteristics

Stefanović, Predrag Lj.; Živković, Nikola V.; Stojiljković, Dragoslava; Jovanović, Vladimir; Erić, Milić D.; Marković, Zoran M.; Cvetinović, Dejan

(2019)

TY  - JOUR
AU  - Stefanović, Predrag Lj.
AU  - Živković, Nikola V.
AU  - Stojiljković, Dragoslava
AU  - Jovanović, Vladimir
AU  - Erić, Milić D.
AU  - Marković, Zoran M.
AU  - Cvetinović, Dejan
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8987
AB  - The anthropogenic emission of GHG especially CO has to be limited and reduced due to 2 their impact on global warming and climate change. Combustion of fossil fuels in the energy sector has a dominant share in total GHG emissions. In order to reduce GHG emission, European Union established a scheme for GHG allowance trading within the community, and the implementation of the European Union emission trading scheme, which is a key to GHG reduction in a cost-effective way. An important part of emission trading scheme is prescribed methodology for monitoring, reporting, and verification of the emission of GHG including characterization of the local fuels combusted by the energy sector. This paper presents lignite characteristics from open-pit mine Borovica- Pljevlja, which has highest coal production in Montenegro (>1.2 Mt per year), including evaluation of its carbon emission factor based on the laboratory analysis of 72 coal samples. Testing of the samples included proximate and ultimate analysis, as well as, net calorific value determination. In accordance with the obtained results, linear correlations between net calorific value and combustible matter content, carbon content and combustible matter content, hydrogen content and combustible matter content, carbon content and net calorific value, were established. Finally, the non-linear analytical correlation between carbon emission factor and net calorific value for Pljevlja lignite was proposed, as a base for the precise calculation of CO emission evaluation.
T2  - Thermal Science
T1  - Pljevlja lignite carbon emission characteristics
VL  - 23
IS  - Suppl. 5
SP  - 1523
EP  - 1531
DO  - 10.2298/TSCI180726288S
ER  - 
@article{
author = "Stefanović, Predrag Lj. and Živković, Nikola V. and Stojiljković, Dragoslava and Jovanović, Vladimir and Erić, Milić D. and Marković, Zoran M. and Cvetinović, Dejan",
year = "2019",
abstract = "The anthropogenic emission of GHG especially CO has to be limited and reduced due to 2 their impact on global warming and climate change. Combustion of fossil fuels in the energy sector has a dominant share in total GHG emissions. In order to reduce GHG emission, European Union established a scheme for GHG allowance trading within the community, and the implementation of the European Union emission trading scheme, which is a key to GHG reduction in a cost-effective way. An important part of emission trading scheme is prescribed methodology for monitoring, reporting, and verification of the emission of GHG including characterization of the local fuels combusted by the energy sector. This paper presents lignite characteristics from open-pit mine Borovica- Pljevlja, which has highest coal production in Montenegro (>1.2 Mt per year), including evaluation of its carbon emission factor based on the laboratory analysis of 72 coal samples. Testing of the samples included proximate and ultimate analysis, as well as, net calorific value determination. In accordance with the obtained results, linear correlations between net calorific value and combustible matter content, carbon content and combustible matter content, hydrogen content and combustible matter content, carbon content and net calorific value, were established. Finally, the non-linear analytical correlation between carbon emission factor and net calorific value for Pljevlja lignite was proposed, as a base for the precise calculation of CO emission evaluation.",
journal = "Thermal Science",
title = "Pljevlja lignite carbon emission characteristics",
volume = "23",
number = "Suppl. 5",
pages = "1523-1531",
doi = "10.2298/TSCI180726288S"
}
Stefanović, P. Lj., Živković, N. V., Stojiljković, D., Jovanović, V., Erić, M. D., Marković, Z. M.,& Cvetinović, D.. (2019). Pljevlja lignite carbon emission characteristics. in Thermal Science, 23(Suppl. 5), 1523-1531.
https://doi.org/10.2298/TSCI180726288S
Stefanović PL, Živković NV, Stojiljković D, Jovanović V, Erić MD, Marković ZM, Cvetinović D. Pljevlja lignite carbon emission characteristics. in Thermal Science. 2019;23(Suppl. 5):1523-1531.
doi:10.2298/TSCI180726288S .
Stefanović, Predrag Lj., Živković, Nikola V., Stojiljković, Dragoslava, Jovanović, Vladimir, Erić, Milić D., Marković, Zoran M., Cvetinović, Dejan, "Pljevlja lignite carbon emission characteristics" in Thermal Science, 23, no. Suppl. 5 (2019):1523-1531,
https://doi.org/10.2298/TSCI180726288S . .
1
1

Mathematical modelling of swirl oxy-fuel burner flame characteristics

Jovanović, Rastko D.; Swiatkowski, Bartosz; Kakietek, Slawomir; Škobalj, Predrag D.; Lazović, Ivan; Cvetinović, Dejan

(2019)

TY  - JOUR
AU  - Jovanović, Rastko D.
AU  - Swiatkowski, Bartosz
AU  - Kakietek, Slawomir
AU  - Škobalj, Predrag D.
AU  - Lazović, Ivan
AU  - Cvetinović, Dejan
PY  - 2019
UR  - https://linkinghub.elsevier.com/retrieve/pii/S019689041930439X
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/8149
AB  - Oxy-fuel combustion is the most promising carbon capture and storage technology, which eliminates carbon dioxide emissions into the atmosphere and also decreases nitrogen oxides emissions thereby lowering global warming potential. In order to implement oxy-fuel combustion technology in full scale power plants, its costs, mainly connected with the amount of pure oxygen produced, must be lowered. The main hypothesis is that it is possible to maintain similar velocity and heat transfer distribution while maintaining stable and efficient burner operation during both combustion technologies modifying burner aerodynamics. Excess oxygen is chosen as a representative parameter of burner's performance and investigation is carried out for four different oxy-fuel burner oxygen excess ratios (λ: 0.8, 0.98, 1.07, and 1.24) together with reference air combustion case. This study suggests a workflow, based on semi-industrial experimental investigations and computational fluid dynamics model composed of advanced sub-models for different combustion phases for development of real scale dual-mode coal swirl burners able for efficient operation during both combustion regimes. The results show that the temperature in near-burner zone and nitrogen oxides emissions increase, while carbon monoxide emissions decrease with the increase of burner oxygen excess ratio, and stable combustion with similar velocity and temperature distributions for both combustion modes is achieved for oxygen excess ratio of 1.07, with decrease in nitrogen oxides and carbon monoxide emissions during oxy-fuel combustion. The performed study demonstrates that it is possible to choose the appropriate burner settings regarding nitrogen oxides and carbon monoxide emissions and burner's ability to operate stably in both air and oxy-fuel combustion modes. © 2019 Elsevier Ltd
T2  - Energy Conversion and Management
T1  - Mathematical modelling of swirl oxy-fuel burner flame characteristics
VL  - 191
SP  - 193
EP  - 207
DO  - 10.1016/j.enconman.2019.04.027
ER  - 
@article{
author = "Jovanović, Rastko D. and Swiatkowski, Bartosz and Kakietek, Slawomir and Škobalj, Predrag D. and Lazović, Ivan and Cvetinović, Dejan",
year = "2019",
abstract = "Oxy-fuel combustion is the most promising carbon capture and storage technology, which eliminates carbon dioxide emissions into the atmosphere and also decreases nitrogen oxides emissions thereby lowering global warming potential. In order to implement oxy-fuel combustion technology in full scale power plants, its costs, mainly connected with the amount of pure oxygen produced, must be lowered. The main hypothesis is that it is possible to maintain similar velocity and heat transfer distribution while maintaining stable and efficient burner operation during both combustion technologies modifying burner aerodynamics. Excess oxygen is chosen as a representative parameter of burner's performance and investigation is carried out for four different oxy-fuel burner oxygen excess ratios (λ: 0.8, 0.98, 1.07, and 1.24) together with reference air combustion case. This study suggests a workflow, based on semi-industrial experimental investigations and computational fluid dynamics model composed of advanced sub-models for different combustion phases for development of real scale dual-mode coal swirl burners able for efficient operation during both combustion regimes. The results show that the temperature in near-burner zone and nitrogen oxides emissions increase, while carbon monoxide emissions decrease with the increase of burner oxygen excess ratio, and stable combustion with similar velocity and temperature distributions for both combustion modes is achieved for oxygen excess ratio of 1.07, with decrease in nitrogen oxides and carbon monoxide emissions during oxy-fuel combustion. The performed study demonstrates that it is possible to choose the appropriate burner settings regarding nitrogen oxides and carbon monoxide emissions and burner's ability to operate stably in both air and oxy-fuel combustion modes. © 2019 Elsevier Ltd",
journal = "Energy Conversion and Management",
title = "Mathematical modelling of swirl oxy-fuel burner flame characteristics",
volume = "191",
pages = "193-207",
doi = "10.1016/j.enconman.2019.04.027"
}
Jovanović, R. D., Swiatkowski, B., Kakietek, S., Škobalj, P. D., Lazović, I.,& Cvetinović, D.. (2019). Mathematical modelling of swirl oxy-fuel burner flame characteristics. in Energy Conversion and Management, 191, 193-207.
https://doi.org/10.1016/j.enconman.2019.04.027
Jovanović RD, Swiatkowski B, Kakietek S, Škobalj PD, Lazović I, Cvetinović D. Mathematical modelling of swirl oxy-fuel burner flame characteristics. in Energy Conversion and Management. 2019;191:193-207.
doi:10.1016/j.enconman.2019.04.027 .
Jovanović, Rastko D., Swiatkowski, Bartosz, Kakietek, Slawomir, Škobalj, Predrag D., Lazović, Ivan, Cvetinović, Dejan, "Mathematical modelling of swirl oxy-fuel burner flame characteristics" in Energy Conversion and Management, 191 (2019):193-207,
https://doi.org/10.1016/j.enconman.2019.04.027 . .
10
9
10

Influence of fiberglass mesh on flammability of EPS used as insulation of buildings

Xu, Qiang; Jin, Cong; Griffin, Gregory J.; Hristov, Jordan; Cvetinović, Dejan; Jiang, Yong

(2018)

TY  - JOUR
AU  - Xu, Qiang
AU  - Jin, Cong
AU  - Griffin, Gregory J.
AU  - Hristov, Jordan
AU  - Cvetinović, Dejan
AU  - Jiang, Yong
PY  - 2018
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7694
AB  - Different scale tests to explore the influence of fiberglass mesh on the fire behavior of expanded polystyrene (EPS) have been conducted. Micro scale combustion calorimeter to measure the heat release rate per unit mass, heat release capacity, and the total heat release of EPS and as well as the fiberglass for milligram specimen mass has been used. Cone colorimeter bench scale burning tests with the EPS specimens and EPS-fiberglass compound specimens have been carried out. The heat release rate per unit area, ignition times, and the derived minimum igniting heat fluxes were determined. Comparative burning tests on the fire spread tendency of EPS and EPS-fiberglass compound specimens have been carried out. It was established that the fiberglass mesh stabilizes the EPS fire as a wick fire due to the adherence of the melting polystyrene adheres to the fiberglass mesh and this causes an upwards fire spread.
T2  - Thermal Science
T1  - Influence of fiberglass mesh on flammability of EPS used as insulation of buildings
VL  - 22
IS  - 2
SP  - 1025
EP  - 1036
DO  - 10.2298/TSCI160405173X
ER  - 
@article{
author = "Xu, Qiang and Jin, Cong and Griffin, Gregory J. and Hristov, Jordan and Cvetinović, Dejan and Jiang, Yong",
year = "2018",
abstract = "Different scale tests to explore the influence of fiberglass mesh on the fire behavior of expanded polystyrene (EPS) have been conducted. Micro scale combustion calorimeter to measure the heat release rate per unit mass, heat release capacity, and the total heat release of EPS and as well as the fiberglass for milligram specimen mass has been used. Cone colorimeter bench scale burning tests with the EPS specimens and EPS-fiberglass compound specimens have been carried out. The heat release rate per unit area, ignition times, and the derived minimum igniting heat fluxes were determined. Comparative burning tests on the fire spread tendency of EPS and EPS-fiberglass compound specimens have been carried out. It was established that the fiberglass mesh stabilizes the EPS fire as a wick fire due to the adherence of the melting polystyrene adheres to the fiberglass mesh and this causes an upwards fire spread.",
journal = "Thermal Science",
title = "Influence of fiberglass mesh on flammability of EPS used as insulation of buildings",
volume = "22",
number = "2",
pages = "1025-1036",
doi = "10.2298/TSCI160405173X"
}
Xu, Q., Jin, C., Griffin, G. J., Hristov, J., Cvetinović, D.,& Jiang, Y.. (2018). Influence of fiberglass mesh on flammability of EPS used as insulation of buildings. in Thermal Science, 22(2), 1025-1036.
https://doi.org/10.2298/TSCI160405173X
Xu Q, Jin C, Griffin GJ, Hristov J, Cvetinović D, Jiang Y. Influence of fiberglass mesh on flammability of EPS used as insulation of buildings. in Thermal Science. 2018;22(2):1025-1036.
doi:10.2298/TSCI160405173X .
Xu, Qiang, Jin, Cong, Griffin, Gregory J., Hristov, Jordan, Cvetinović, Dejan, Jiang, Yong, "Influence of fiberglass mesh on flammability of EPS used as insulation of buildings" in Thermal Science, 22, no. 2 (2018):1025-1036,
https://doi.org/10.2298/TSCI160405173X . .
1

Experimental and Numerical Investigation of Flame Characteristics During Swirl Burner Operation under Conventional and Oxy-Fuel Conditions

Jovanović, Rastko D.; Strug, Krzysztof; Swiatkowski, Bartosz; Kakietek, Slawomir; Jagiello, Krzysztof; Cvetinović, Dejan

(2017)

TY  - JOUR
AU  - Jovanović, Rastko D.
AU  - Strug, Krzysztof
AU  - Swiatkowski, Bartosz
AU  - Kakietek, Slawomir
AU  - Jagiello, Krzysztof
AU  - Cvetinović, Dejan
PY  - 2017
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1630
AB  - Oxy-fuel coal combustion, together with carbon capture and storage or utilization, is a set of technologies allowing to burn coal without emitting globe warming CO2. As it is expected that oxy-fuel combustion may be used for a retrofit of existing boilers, development of a novel oxy-burners is very important step. It is expected that these burners will be able to sustain stable flame in oxy-fuel conditions, but also, for start-up and emergency reasons, in conventional, air conditions. The most cost effective way of achieving dual-mode boilers is to introduce dual-mode burners. Numerical simulations allow investigation of new designs and technologies at a relatively low cost, but for the results to be trustworthy they need to be validated This paper proposes a workflow for design, modeling, and validation of dual-mode burners by combining experimental investigation and numerical simulations. Experiments are performed with semi-industrial scale burners in 0.5 MW, test facility for flame investigation. Novel CFD model based on ANSYS FLUENT solver, with special consideration of coal combustion process, especially regarding devolatilization, ignition, gaseous and surface reactions, NOx formation, and radiation was suggested The main model feature is its ability to simulate pulverized coal combustion under different combusting atmospheres, and thus is suitable for both air and oxy-fuel combustion simulations. Using the proposed methodology two designs of pulverized coal burners have been investigated both experimentally and numerically giving consistent results. The improved burner design proved to be a more flexible device, achieving stable ignition and combustion during both combustion regimes: conventional in air and oxy-fuel in a mixture of O-2 and CO2 (representing dry recycledflue gas with high CO2 content). The proposed framework is expected to be of use for further improvement of multi-mode pulverized fuel swirl burners but can be also used for independent designs evaluation.
T2  - Thermal Science
T1  - Experimental and Numerical Investigation of Flame Characteristics During Swirl Burner Operation under Conventional and Oxy-Fuel Conditions
VL  - 21
IS  - 3
SP  - 1463
EP  - 1477
DO  - 10.2298/TSCI161110325J
ER  - 
@article{
author = "Jovanović, Rastko D. and Strug, Krzysztof and Swiatkowski, Bartosz and Kakietek, Slawomir and Jagiello, Krzysztof and Cvetinović, Dejan",
year = "2017",
abstract = "Oxy-fuel coal combustion, together with carbon capture and storage or utilization, is a set of technologies allowing to burn coal without emitting globe warming CO2. As it is expected that oxy-fuel combustion may be used for a retrofit of existing boilers, development of a novel oxy-burners is very important step. It is expected that these burners will be able to sustain stable flame in oxy-fuel conditions, but also, for start-up and emergency reasons, in conventional, air conditions. The most cost effective way of achieving dual-mode boilers is to introduce dual-mode burners. Numerical simulations allow investigation of new designs and technologies at a relatively low cost, but for the results to be trustworthy they need to be validated This paper proposes a workflow for design, modeling, and validation of dual-mode burners by combining experimental investigation and numerical simulations. Experiments are performed with semi-industrial scale burners in 0.5 MW, test facility for flame investigation. Novel CFD model based on ANSYS FLUENT solver, with special consideration of coal combustion process, especially regarding devolatilization, ignition, gaseous and surface reactions, NOx formation, and radiation was suggested The main model feature is its ability to simulate pulverized coal combustion under different combusting atmospheres, and thus is suitable for both air and oxy-fuel combustion simulations. Using the proposed methodology two designs of pulverized coal burners have been investigated both experimentally and numerically giving consistent results. The improved burner design proved to be a more flexible device, achieving stable ignition and combustion during both combustion regimes: conventional in air and oxy-fuel in a mixture of O-2 and CO2 (representing dry recycledflue gas with high CO2 content). The proposed framework is expected to be of use for further improvement of multi-mode pulverized fuel swirl burners but can be also used for independent designs evaluation.",
journal = "Thermal Science",
title = "Experimental and Numerical Investigation of Flame Characteristics During Swirl Burner Operation under Conventional and Oxy-Fuel Conditions",
volume = "21",
number = "3",
pages = "1463-1477",
doi = "10.2298/TSCI161110325J"
}
Jovanović, R. D., Strug, K., Swiatkowski, B., Kakietek, S., Jagiello, K.,& Cvetinović, D.. (2017). Experimental and Numerical Investigation of Flame Characteristics During Swirl Burner Operation under Conventional and Oxy-Fuel Conditions. in Thermal Science, 21(3), 1463-1477.
https://doi.org/10.2298/TSCI161110325J
Jovanović RD, Strug K, Swiatkowski B, Kakietek S, Jagiello K, Cvetinović D. Experimental and Numerical Investigation of Flame Characteristics During Swirl Burner Operation under Conventional and Oxy-Fuel Conditions. in Thermal Science. 2017;21(3):1463-1477.
doi:10.2298/TSCI161110325J .
Jovanović, Rastko D., Strug, Krzysztof, Swiatkowski, Bartosz, Kakietek, Slawomir, Jagiello, Krzysztof, Cvetinović, Dejan, "Experimental and Numerical Investigation of Flame Characteristics During Swirl Burner Operation under Conventional and Oxy-Fuel Conditions" in Thermal Science, 21, no. 3 (2017):1463-1477,
https://doi.org/10.2298/TSCI161110325J . .
9
9
10

Review of the Research on the Turbulence in the Laboratory for Thermal Engineering and Energy

Cvetinović, Dejan; Stefanović, Predrag Lj.; Bakić, Vukman; Oka, Simeon N.

(2017)

TY  - JOUR
AU  - Cvetinović, Dejan
AU  - Stefanović, Predrag Lj.
AU  - Bakić, Vukman
AU  - Oka, Simeon N.
PY  - 2017
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7196
AB  - Paper gives a review of the most important results of turbulence research achieved by the Laboratory for Thermal Engineering and Energy at the Vinca Insitute of Nuclear Sciences. Paper presents detailed overview of the history of the scientific research provided in the laboratory, from the beginning in the mid-60s to today, pointing out the main reasons initiating the investigations in this field. After the first period, which was mainly devoted to the research of the structure of the turbulence, since the beginning of the 80s, research is mainly oriented to the flows at high temperatures including chemical reactions and to the development and improvement of differential mathematical models as a modern and very efficient tool in the technological development. This research significantly contributed to the development of pulverized coal burners, plasma-chemical reactors, and optimization of pulverized coal fired boilers operating parameters and prediction of the greenhouse gases emissions. Most recent period includes experimental and numerical studies of the coherent structures in turbulent fluid jets, mathematical modeling of various turbulent thermal flow processes including two-phase turbulent flow in the multiphase heat exchangers and mathematical modeling of the atmospheric boundary layer.
T2  - Thermal Science
T1  - Review of the Research on the Turbulence in the Laboratory for Thermal Engineering and Energy
VL  - 21
SP  - S875
EP  - S898
DO  - 10.2298/TSCI160221330C
ER  - 
@article{
author = "Cvetinović, Dejan and Stefanović, Predrag Lj. and Bakić, Vukman and Oka, Simeon N.",
year = "2017",
abstract = "Paper gives a review of the most important results of turbulence research achieved by the Laboratory for Thermal Engineering and Energy at the Vinca Insitute of Nuclear Sciences. Paper presents detailed overview of the history of the scientific research provided in the laboratory, from the beginning in the mid-60s to today, pointing out the main reasons initiating the investigations in this field. After the first period, which was mainly devoted to the research of the structure of the turbulence, since the beginning of the 80s, research is mainly oriented to the flows at high temperatures including chemical reactions and to the development and improvement of differential mathematical models as a modern and very efficient tool in the technological development. This research significantly contributed to the development of pulverized coal burners, plasma-chemical reactors, and optimization of pulverized coal fired boilers operating parameters and prediction of the greenhouse gases emissions. Most recent period includes experimental and numerical studies of the coherent structures in turbulent fluid jets, mathematical modeling of various turbulent thermal flow processes including two-phase turbulent flow in the multiphase heat exchangers and mathematical modeling of the atmospheric boundary layer.",
journal = "Thermal Science",
title = "Review of the Research on the Turbulence in the Laboratory for Thermal Engineering and Energy",
volume = "21",
pages = "S875-S898",
doi = "10.2298/TSCI160221330C"
}
Cvetinović, D., Stefanović, P. Lj., Bakić, V.,& Oka, S. N.. (2017). Review of the Research on the Turbulence in the Laboratory for Thermal Engineering and Energy. in Thermal Science, 21, S875-S898.
https://doi.org/10.2298/TSCI160221330C
Cvetinović D, Stefanović PL, Bakić V, Oka SN. Review of the Research on the Turbulence in the Laboratory for Thermal Engineering and Energy. in Thermal Science. 2017;21:S875-S898.
doi:10.2298/TSCI160221330C .
Cvetinović, Dejan, Stefanović, Predrag Lj., Bakić, Vukman, Oka, Simeon N., "Review of the Research on the Turbulence in the Laboratory for Thermal Engineering and Energy" in Thermal Science, 21 (2017):S875-S898,
https://doi.org/10.2298/TSCI160221330C . .
1
4
5

Novel Fragmentation Model for Pulverized Coal Particles Gasification in Low Temperature Air Thermal Plasma

Jovanović, Rastko D.; Cvetinović, Dejan; Stefanović, Predrag Lj.; Škobalj, Predrag D.; Marković, Zoran M.

(2016)

TY  - JOUR
AU  - Jovanović, Rastko D.
AU  - Cvetinović, Dejan
AU  - Stefanović, Predrag Lj.
AU  - Škobalj, Predrag D.
AU  - Marković, Zoran M.
PY  - 2016
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1145
AB  - New system for start-up and flame support based on coal gasification by low temperature air thermal plasma is planned to supplement current heavy oil system in Serbian thermal power plants in order to decrease air pollutions emission and operational costs. Locally introduced plasma thermal energy heats up and ignites entrained coal particles, thus starting chain process which releases heat energy from gasified coal particles inside burner channel. Important stages during particle combustion, such as particle devolatilisation and char combustion, are described with satisfying accuracy in existing commercial computer fluid dynamics codes that are extensively used as powerful tool for pulverized coal combustion and gasification modeling. However, during plasma coal gasification, high plasma temperature induces strong thermal stresses inside interacting coal particles. These stresses lead to thermal shock and extensive particle fragmentation during which coal particles with initial size of 50-100 mu m disintegrate into fragments of at most 5-10 mu m. This intensifies volatile release by a factor 3-4 and substantially accelerates the oxidation of combustible matter. Particle fragmentation, due to its small size and thus limited influence on combustion process is commonly neglected in modelling. The main focus of this work is to suggest novel approach to pulverized coal gasification under high temperature conditions and to implement it into commercial comprehensive code ANSYS FLUENT 14.0. Proposed model was validated against experimental data obtained in newly built pilot scale direct current plasma burner test facility. Newly developed model showed very good agreement with experimental results with relative error less than 10%, while the standard built-in gasification model had error up to 25%.
T2  - Thermal Science
T1  - Novel Fragmentation Model for Pulverized Coal Particles Gasification in Low Temperature Air Thermal Plasma
VL  - 20
SP  - S207
EP  - S221
DO  - 10.2298/TSCI151222015J
ER  - 
@article{
author = "Jovanović, Rastko D. and Cvetinović, Dejan and Stefanović, Predrag Lj. and Škobalj, Predrag D. and Marković, Zoran M.",
year = "2016",
abstract = "New system for start-up and flame support based on coal gasification by low temperature air thermal plasma is planned to supplement current heavy oil system in Serbian thermal power plants in order to decrease air pollutions emission and operational costs. Locally introduced plasma thermal energy heats up and ignites entrained coal particles, thus starting chain process which releases heat energy from gasified coal particles inside burner channel. Important stages during particle combustion, such as particle devolatilisation and char combustion, are described with satisfying accuracy in existing commercial computer fluid dynamics codes that are extensively used as powerful tool for pulverized coal combustion and gasification modeling. However, during plasma coal gasification, high plasma temperature induces strong thermal stresses inside interacting coal particles. These stresses lead to thermal shock and extensive particle fragmentation during which coal particles with initial size of 50-100 mu m disintegrate into fragments of at most 5-10 mu m. This intensifies volatile release by a factor 3-4 and substantially accelerates the oxidation of combustible matter. Particle fragmentation, due to its small size and thus limited influence on combustion process is commonly neglected in modelling. The main focus of this work is to suggest novel approach to pulverized coal gasification under high temperature conditions and to implement it into commercial comprehensive code ANSYS FLUENT 14.0. Proposed model was validated against experimental data obtained in newly built pilot scale direct current plasma burner test facility. Newly developed model showed very good agreement with experimental results with relative error less than 10%, while the standard built-in gasification model had error up to 25%.",
journal = "Thermal Science",
title = "Novel Fragmentation Model for Pulverized Coal Particles Gasification in Low Temperature Air Thermal Plasma",
volume = "20",
pages = "S207-S221",
doi = "10.2298/TSCI151222015J"
}
Jovanović, R. D., Cvetinović, D., Stefanović, P. Lj., Škobalj, P. D.,& Marković, Z. M.. (2016). Novel Fragmentation Model for Pulverized Coal Particles Gasification in Low Temperature Air Thermal Plasma. in Thermal Science, 20, S207-S221.
https://doi.org/10.2298/TSCI151222015J
Jovanović RD, Cvetinović D, Stefanović PL, Škobalj PD, Marković ZM. Novel Fragmentation Model for Pulverized Coal Particles Gasification in Low Temperature Air Thermal Plasma. in Thermal Science. 2016;20:S207-S221.
doi:10.2298/TSCI151222015J .
Jovanović, Rastko D., Cvetinović, Dejan, Stefanović, Predrag Lj., Škobalj, Predrag D., Marković, Zoran M., "Novel Fragmentation Model for Pulverized Coal Particles Gasification in Low Temperature Air Thermal Plasma" in Thermal Science, 20 (2016):S207-S221,
https://doi.org/10.2298/TSCI151222015J . .
2
3

Assessment Results of Fluid-Structure Interaction Numerical Simulation Using Fuzzy Logic

Marković, Zoran M.; Stupar, Slobodan N.; Dinulovic, Mirko R.; Pekovic, Ognjen M.; Stefanović, Predrag Lj.; Cvetinović, Dejan

(2016)

TY  - JOUR
AU  - Marković, Zoran M.
AU  - Stupar, Slobodan N.
AU  - Dinulovic, Mirko R.
AU  - Pekovic, Ognjen M.
AU  - Stefanović, Predrag Lj.
AU  - Cvetinović, Dejan
PY  - 2016
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1147
AB  - A fuzzy approximation concept is applied in order to predict results of coupled computational structure mechanics and computational fluid dynamics while solving a problem of steady incompressible gas flow through thermally loaded rectangular thin-walled channel. Channel wall deforms into wave-type shapes depending on thermal load and fluid inlet velocity inducing the changes of fluid flow accordingly. A set of fluid-structure interaction numerical tests have been defined by varying the values of fluid inlet velocity, temperature of inner and outer surface of the channel wall, and numerical grid density. The unsteady Navier-Stokes equations are numerically solved using an element-based finite volume method and second order backward Euler discretization scheme. The structural model is solved by finite element method including geometric and material non-linearities. The implicit two-way iterative code coupling, partitioned solution approach, were used while solving these numerical tests. Results of numerical analysis indicate that gravity and pressure distribution inside the channel contributes to triggering the shape of deformation. In the inverse problem, the results of fluid-structure interaction numerical simulations formed a database of input variables for development fuzzy logic based models considering downstream pressure drop and maximum stresses as the objective functions. Developed fuzzy models predicted targeting results within a reasonable accuracy limit at lower computation cost compared to series of fluid-structure interaction numerical calculations. Smaller relative difference were obtained when calculating the values of pressure drop then maximal stresses indicating that transfer function influence on output values have to be additionally investigated.
T2  - Thermal Science
T1  - Assessment Results of Fluid-Structure Interaction Numerical Simulation Using Fuzzy Logic
VL  - 20
SP  - S235
EP  - S250
DO  - 10.2298/TSCI160111083M
ER  - 
@article{
author = "Marković, Zoran M. and Stupar, Slobodan N. and Dinulovic, Mirko R. and Pekovic, Ognjen M. and Stefanović, Predrag Lj. and Cvetinović, Dejan",
year = "2016",
abstract = "A fuzzy approximation concept is applied in order to predict results of coupled computational structure mechanics and computational fluid dynamics while solving a problem of steady incompressible gas flow through thermally loaded rectangular thin-walled channel. Channel wall deforms into wave-type shapes depending on thermal load and fluid inlet velocity inducing the changes of fluid flow accordingly. A set of fluid-structure interaction numerical tests have been defined by varying the values of fluid inlet velocity, temperature of inner and outer surface of the channel wall, and numerical grid density. The unsteady Navier-Stokes equations are numerically solved using an element-based finite volume method and second order backward Euler discretization scheme. The structural model is solved by finite element method including geometric and material non-linearities. The implicit two-way iterative code coupling, partitioned solution approach, were used while solving these numerical tests. Results of numerical analysis indicate that gravity and pressure distribution inside the channel contributes to triggering the shape of deformation. In the inverse problem, the results of fluid-structure interaction numerical simulations formed a database of input variables for development fuzzy logic based models considering downstream pressure drop and maximum stresses as the objective functions. Developed fuzzy models predicted targeting results within a reasonable accuracy limit at lower computation cost compared to series of fluid-structure interaction numerical calculations. Smaller relative difference were obtained when calculating the values of pressure drop then maximal stresses indicating that transfer function influence on output values have to be additionally investigated.",
journal = "Thermal Science",
title = "Assessment Results of Fluid-Structure Interaction Numerical Simulation Using Fuzzy Logic",
volume = "20",
pages = "S235-S250",
doi = "10.2298/TSCI160111083M"
}
Marković, Z. M., Stupar, S. N., Dinulovic, M. R., Pekovic, O. M., Stefanović, P. Lj.,& Cvetinović, D.. (2016). Assessment Results of Fluid-Structure Interaction Numerical Simulation Using Fuzzy Logic. in Thermal Science, 20, S235-S250.
https://doi.org/10.2298/TSCI160111083M
Marković ZM, Stupar SN, Dinulovic MR, Pekovic OM, Stefanović PL, Cvetinović D. Assessment Results of Fluid-Structure Interaction Numerical Simulation Using Fuzzy Logic. in Thermal Science. 2016;20:S235-S250.
doi:10.2298/TSCI160111083M .
Marković, Zoran M., Stupar, Slobodan N., Dinulovic, Mirko R., Pekovic, Ognjen M., Stefanović, Predrag Lj., Cvetinović, Dejan, "Assessment Results of Fluid-Structure Interaction Numerical Simulation Using Fuzzy Logic" in Thermal Science, 20 (2016):S235-S250,
https://doi.org/10.2298/TSCI160111083M . .
1
3

Lattice Monte Carlo simulation of single coal char particle combustion under oxy-fuel conditions

Jovanović, Rastko D.; Marek, Ewa; Maletić, Slobodan; Cvetinović, Dejan; Marković, Zoran M.

(2015)

TY  - JOUR
AU  - Jovanović, Rastko D.
AU  - Marek, Ewa
AU  - Maletić, Slobodan
AU  - Cvetinović, Dejan
AU  - Marković, Zoran M.
PY  - 2015
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7066
AB  - A descriptive model for isolated char particle combustion under conventional and oxy-fuel conditions was developed. Suggested model is based on the percolation theory and Monte Carlo simulation technique. Char particle was modeled as a square lattice consisting of a large number of small sites. Sites correspond either to fixed carbon, ash, or pore, and they were distributed randomly inside char lattice using percolation concept, at the start of simulation. Random walk model was used to represent gaseous species diffusion through particle pores. Char combustion was modeled using power law Arrhenius model which assumes that reaction rate depends of particle temperature and oxygen partial pressure on particle surface. The main aim of the proposed model was to take into account influence of heterogeneous char particle structure to randomness of the char combustion process. The suggested models behavior was validated by qualitative comparison with experimental data obtained in single particle reactor. It was found that simulated combustion time, char burnout and particle temperature values are in good agreement with experimentally determined data. Special emphasis was given to the CO2 gasification reaction influence on char conversion and particle temperature values. Further development of the proposed model with appropriate simplifications would enable its inclusion in comprehensive CFD codes. (C) 2015 Elsevier Ltd. All rights reserved.
T2  - Fuel
T1  - Lattice Monte Carlo simulation of single coal char particle combustion under oxy-fuel conditions
VL  - 151
SP  - 172
EP  - 181
DO  - 10.1016/j.fuel.2015.02.104
ER  - 
@article{
author = "Jovanović, Rastko D. and Marek, Ewa and Maletić, Slobodan and Cvetinović, Dejan and Marković, Zoran M.",
year = "2015",
abstract = "A descriptive model for isolated char particle combustion under conventional and oxy-fuel conditions was developed. Suggested model is based on the percolation theory and Monte Carlo simulation technique. Char particle was modeled as a square lattice consisting of a large number of small sites. Sites correspond either to fixed carbon, ash, or pore, and they were distributed randomly inside char lattice using percolation concept, at the start of simulation. Random walk model was used to represent gaseous species diffusion through particle pores. Char combustion was modeled using power law Arrhenius model which assumes that reaction rate depends of particle temperature and oxygen partial pressure on particle surface. The main aim of the proposed model was to take into account influence of heterogeneous char particle structure to randomness of the char combustion process. The suggested models behavior was validated by qualitative comparison with experimental data obtained in single particle reactor. It was found that simulated combustion time, char burnout and particle temperature values are in good agreement with experimentally determined data. Special emphasis was given to the CO2 gasification reaction influence on char conversion and particle temperature values. Further development of the proposed model with appropriate simplifications would enable its inclusion in comprehensive CFD codes. (C) 2015 Elsevier Ltd. All rights reserved.",
journal = "Fuel",
title = "Lattice Monte Carlo simulation of single coal char particle combustion under oxy-fuel conditions",
volume = "151",
pages = "172-181",
doi = "10.1016/j.fuel.2015.02.104"
}
Jovanović, R. D., Marek, E., Maletić, S., Cvetinović, D.,& Marković, Z. M.. (2015). Lattice Monte Carlo simulation of single coal char particle combustion under oxy-fuel conditions. in Fuel, 151, 172-181.
https://doi.org/10.1016/j.fuel.2015.02.104
Jovanović RD, Marek E, Maletić S, Cvetinović D, Marković ZM. Lattice Monte Carlo simulation of single coal char particle combustion under oxy-fuel conditions. in Fuel. 2015;151:172-181.
doi:10.1016/j.fuel.2015.02.104 .
Jovanović, Rastko D., Marek, Ewa, Maletić, Slobodan, Cvetinović, Dejan, Marković, Zoran M., "Lattice Monte Carlo simulation of single coal char particle combustion under oxy-fuel conditions" in Fuel, 151 (2015):172-181,
https://doi.org/10.1016/j.fuel.2015.02.104 . .
16
17
18

Sensitivity analysis of different kinetic factors for numerical modeling of Serbian lignite devolatilization process

Jovanović, Rastko D.; Cvetinović, Dejan; Erić, Milić D.; Rasuo, Bosko; Adžić, Miroljub M.

(2014)

TY  - JOUR
AU  - Jovanović, Rastko D.
AU  - Cvetinović, Dejan
AU  - Erić, Milić D.
AU  - Rasuo, Bosko
AU  - Adžić, Miroljub M.
PY  - 2014
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/5955
AB  - Numerical modeling is widely used tool for prediction of combustion processes. Computational Fluid Dynamics - CFD models use three kinetic rates for description of the coal combustion processes: coal devolatilization, volatile combustion and char combustion. Reported rates for coal devolatilization vary considerably among the authors depending on the type of experimental systems used in describing the phenomenon. Accurate representation of devolatilization process is necessary in order to perform successful CFD calculations of pulverized coal combustion and gasification. The subject of this work is numerical modeling of Serbian lignite pulverized coal devolatilization in drop tube type laboratory scale reactor. The aim of this study is to evaluate the influence of different devolatilization kinetic factors on total devolatilization time in numerical modeling of pulverized Serbian lignite devolatilization. Nine different devolatilization kinetic rates mostly used in devolatilization numerical modeling are compared in the presented work. (c) 2014 Elsevier Ltd. All rights reserved.
T2  - International Journal of Heat and Mass Transfer
T1  - Sensitivity analysis of different kinetic factors for numerical modeling of Serbian lignite devolatilization process
VL  - 72
SP  - 489
EP  - 500
DO  - 10.1016/j.ijheatmasstransfer.2014.01.036
ER  - 
@article{
author = "Jovanović, Rastko D. and Cvetinović, Dejan and Erić, Milić D. and Rasuo, Bosko and Adžić, Miroljub M.",
year = "2014",
abstract = "Numerical modeling is widely used tool for prediction of combustion processes. Computational Fluid Dynamics - CFD models use three kinetic rates for description of the coal combustion processes: coal devolatilization, volatile combustion and char combustion. Reported rates for coal devolatilization vary considerably among the authors depending on the type of experimental systems used in describing the phenomenon. Accurate representation of devolatilization process is necessary in order to perform successful CFD calculations of pulverized coal combustion and gasification. The subject of this work is numerical modeling of Serbian lignite pulverized coal devolatilization in drop tube type laboratory scale reactor. The aim of this study is to evaluate the influence of different devolatilization kinetic factors on total devolatilization time in numerical modeling of pulverized Serbian lignite devolatilization. Nine different devolatilization kinetic rates mostly used in devolatilization numerical modeling are compared in the presented work. (c) 2014 Elsevier Ltd. All rights reserved.",
journal = "International Journal of Heat and Mass Transfer",
title = "Sensitivity analysis of different kinetic factors for numerical modeling of Serbian lignite devolatilization process",
volume = "72",
pages = "489-500",
doi = "10.1016/j.ijheatmasstransfer.2014.01.036"
}
Jovanović, R. D., Cvetinović, D., Erić, M. D., Rasuo, B.,& Adžić, M. M.. (2014). Sensitivity analysis of different kinetic factors for numerical modeling of Serbian lignite devolatilization process. in International Journal of Heat and Mass Transfer, 72, 489-500.
https://doi.org/10.1016/j.ijheatmasstransfer.2014.01.036
Jovanović RD, Cvetinović D, Erić MD, Rasuo B, Adžić MM. Sensitivity analysis of different kinetic factors for numerical modeling of Serbian lignite devolatilization process. in International Journal of Heat and Mass Transfer. 2014;72:489-500.
doi:10.1016/j.ijheatmasstransfer.2014.01.036 .
Jovanović, Rastko D., Cvetinović, Dejan, Erić, Milić D., Rasuo, Bosko, Adžić, Miroljub M., "Sensitivity analysis of different kinetic factors for numerical modeling of Serbian lignite devolatilization process" in International Journal of Heat and Mass Transfer, 72 (2014):489-500,
https://doi.org/10.1016/j.ijheatmasstransfer.2014.01.036 . .
5
6
6

An initial study on feasible treatment of Serbian lignite through utilization of low-rank coal upgrading technologies

Stakic, Milan; Cvetinović, Dejan; Škobalj, Predrag D.; Spasojević, Vuk D.

(2014)

TY  - JOUR
AU  - Stakic, Milan
AU  - Cvetinović, Dejan
AU  - Škobalj, Predrag D.
AU  - Spasojević, Vuk D.
PY  - 2014
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/243
AB  - Despite benefiting from vast fuel reserves, combustion of low-rank coals is commonly characterized by low thermal efficiency and high pollutant emissions, partly due to high moisture content of the coals in question. Thus, removal of moisture from low-rank coals is deemed an important quality upgrading method. The paper provides an overview of the current status of low-rank coal upgrading technologies, particularly with respect to utilization of drying and dewatering procedures. In order to examine the influence of relevant parameters on the moisture removal process, a model of convective coal drying in a packed, as well as in a fluid bed combustion arrangement, is developed and presented. Product-specific data (intraparticle mass transfer, gas-solid moisture equilibrium) related to the coal variety addressed herein (lignite) are obtained through preliminary investigations. Effective thermal conductivity of the packed bed as defined by Zehner/Bauer/Schlunder is used to define heat transfer mechanisms occurring in the packed bed. Similar two-phase fluidization model has been validated for different types of biomaterials. (C) 2014 The Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
T2  - Chemical Engineering Research and Design
T1  - An initial study on feasible treatment of Serbian lignite through utilization of low-rank coal upgrading technologies
VL  - 92
IS  - 11
SP  - 2383
EP  - 2395
DO  - 10.1016/j.cherd.2014.02.032
ER  - 
@article{
author = "Stakic, Milan and Cvetinović, Dejan and Škobalj, Predrag D. and Spasojević, Vuk D.",
year = "2014",
abstract = "Despite benefiting from vast fuel reserves, combustion of low-rank coals is commonly characterized by low thermal efficiency and high pollutant emissions, partly due to high moisture content of the coals in question. Thus, removal of moisture from low-rank coals is deemed an important quality upgrading method. The paper provides an overview of the current status of low-rank coal upgrading technologies, particularly with respect to utilization of drying and dewatering procedures. In order to examine the influence of relevant parameters on the moisture removal process, a model of convective coal drying in a packed, as well as in a fluid bed combustion arrangement, is developed and presented. Product-specific data (intraparticle mass transfer, gas-solid moisture equilibrium) related to the coal variety addressed herein (lignite) are obtained through preliminary investigations. Effective thermal conductivity of the packed bed as defined by Zehner/Bauer/Schlunder is used to define heat transfer mechanisms occurring in the packed bed. Similar two-phase fluidization model has been validated for different types of biomaterials. (C) 2014 The Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.",
journal = "Chemical Engineering Research and Design",
title = "An initial study on feasible treatment of Serbian lignite through utilization of low-rank coal upgrading technologies",
volume = "92",
number = "11",
pages = "2383-2395",
doi = "10.1016/j.cherd.2014.02.032"
}
Stakic, M., Cvetinović, D., Škobalj, P. D.,& Spasojević, V. D.. (2014). An initial study on feasible treatment of Serbian lignite through utilization of low-rank coal upgrading technologies. in Chemical Engineering Research and Design, 92(11), 2383-2395.
https://doi.org/10.1016/j.cherd.2014.02.032
Stakic M, Cvetinović D, Škobalj PD, Spasojević VD. An initial study on feasible treatment of Serbian lignite through utilization of low-rank coal upgrading technologies. in Chemical Engineering Research and Design. 2014;92(11):2383-2395.
doi:10.1016/j.cherd.2014.02.032 .
Stakic, Milan, Cvetinović, Dejan, Škobalj, Predrag D., Spasojević, Vuk D., "An initial study on feasible treatment of Serbian lignite through utilization of low-rank coal upgrading technologies" in Chemical Engineering Research and Design, 92, no. 11 (2014):2383-2395,
https://doi.org/10.1016/j.cherd.2014.02.032 . .
18
16
17

Eksperimentalno i numeričko ispitivanje uticaja modifikacije turbulentnog osnosimetričnog mlaza zvučnim oscilacijama na proces prenosa toplote pri udaru o ravnu zagrejanu podlogu

Cvetinović, Dejan

(Универзитет у Београду, Машински факултет, 2014)

TY  - THES
AU  - Cvetinović, Dejan
PY  - 2014
UR  - http://eteze.bg.ac.rs/application/showtheses?thesesId=3586
UR  - https://fedorabg.bg.ac.rs/fedora/get/o:12332/bdef:Content/download
UR  - http://vbs.rs/scripts/cobiss?command=DISPLAY&base=70036&RID=47443471
UR  - http://nardus.mpn.gov.rs/123456789/6235
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7295
AB  - Predmet ovog istraživanja je turbulentnoži osnosimetrični slobodni mlaz vazduha koji ističe u mirnu okolnu sredinu, fluida istih karakteristika iz mlaznica različitih konfiguracija...
AB  - The subject of this thesis is the submerged, round, unconfined turbulent axymemetric jet which issues from nozzles with different geometries and impinges to the flat heated plate positioned normally to the jet axis...
PB  - Универзитет у Београду, Машински факултет
T2  - Универзитет у Београду
T1  - Eksperimentalno i numeričko ispitivanje uticaja modifikacije turbulentnog osnosimetričnog mlaza zvučnim oscilacijama na proces prenosa toplote pri udaru o ravnu zagrejanu podlogu
T1  - Experimental and numerical investigation on influence of turbulent axisymmetric jet modification by acoustic oscillations on impiging jet heat transfer
ER  - 
@phdthesis{
author = "Cvetinović, Dejan",
year = "2014",
abstract = "Predmet ovog istraživanja je turbulentnoži osnosimetrični slobodni mlaz vazduha koji ističe u mirnu okolnu sredinu, fluida istih karakteristika iz mlaznica različitih konfiguracija..., The subject of this thesis is the submerged, round, unconfined turbulent axymemetric jet which issues from nozzles with different geometries and impinges to the flat heated plate positioned normally to the jet axis...",
publisher = "Универзитет у Београду, Машински факултет",
journal = "Универзитет у Београду",
title = "Eksperimentalno i numeričko ispitivanje uticaja modifikacije turbulentnog osnosimetričnog mlaza zvučnim oscilacijama na proces prenosa toplote pri udaru o ravnu zagrejanu podlogu, Experimental and numerical investigation on influence of turbulent axisymmetric jet modification by acoustic oscillations on impiging jet heat transfer"
}
Cvetinović, D.. (2014). Eksperimentalno i numeričko ispitivanje uticaja modifikacije turbulentnog osnosimetričnog mlaza zvučnim oscilacijama na proces prenosa toplote pri udaru o ravnu zagrejanu podlogu. in Универзитет у Београду
Универзитет у Београду, Машински факултет..
Cvetinović D. Eksperimentalno i numeričko ispitivanje uticaja modifikacije turbulentnog osnosimetričnog mlaza zvučnim oscilacijama na proces prenosa toplote pri udaru o ravnu zagrejanu podlogu. in Универзитет у Београду. 2014;..
Cvetinović, Dejan, "Eksperimentalno i numeričko ispitivanje uticaja modifikacije turbulentnog osnosimetričnog mlaza zvučnim oscilacijama na proces prenosa toplote pri udaru o ravnu zagrejanu podlogu" in Универзитет у Београду (2014).

Numerical investigation of pulverized coal jet flame characteristics under different oxy-fuel conditions

Jovanović, Rastko D.; Rasuo, Basko; Stefanović, Predrag Lj.; Cvetinović, Dejan; Swiatkowski, Bartosz

(2013)

TY  - JOUR
AU  - Jovanović, Rastko D.
AU  - Rasuo, Basko
AU  - Stefanović, Predrag Lj.
AU  - Cvetinović, Dejan
AU  - Swiatkowski, Bartosz
PY  - 2013
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/5311
AB  - Pulverized coal combustion in mixture of oxygen and recycled flue gasses, known as oxy-fuel combustion, is considered as one of the several possible alternatives to conventional pulverized coal combustion. Switching from conventional pulverized-coal combustion to oxy-fuel combustion brings significant changes in flame properties among which the most important are ignition properties and flame stability. This paper presents the results of experimental and numerical analysis of ignition phenomena under O-2/CO2 mixtures with different oxygen content. The main focus of the presented paper is to suggest novel ignition sub-model which can describe all possible ignition mechanisms. Proposed ignition sub-model together with Large Eddy Simulation (LES) turbulence modeling enables accurate prediction of main flame characteristics: ignition point position, ignition temperature, and flame stability. (C) 2012 Elsevier Ltd. All rights reserved.
T2  - International Journal of Heat and Mass Transfer
T1  - Numerical investigation of pulverized coal jet flame characteristics under different oxy-fuel conditions
VL  - 58
IS  - 1-2
SP  - 654
EP  - 662
DO  - 10.1016/j.ijheatmasstransfer.2012.11.070
ER  - 
@article{
author = "Jovanović, Rastko D. and Rasuo, Basko and Stefanović, Predrag Lj. and Cvetinović, Dejan and Swiatkowski, Bartosz",
year = "2013",
abstract = "Pulverized coal combustion in mixture of oxygen and recycled flue gasses, known as oxy-fuel combustion, is considered as one of the several possible alternatives to conventional pulverized coal combustion. Switching from conventional pulverized-coal combustion to oxy-fuel combustion brings significant changes in flame properties among which the most important are ignition properties and flame stability. This paper presents the results of experimental and numerical analysis of ignition phenomena under O-2/CO2 mixtures with different oxygen content. The main focus of the presented paper is to suggest novel ignition sub-model which can describe all possible ignition mechanisms. Proposed ignition sub-model together with Large Eddy Simulation (LES) turbulence modeling enables accurate prediction of main flame characteristics: ignition point position, ignition temperature, and flame stability. (C) 2012 Elsevier Ltd. All rights reserved.",
journal = "International Journal of Heat and Mass Transfer",
title = "Numerical investigation of pulverized coal jet flame characteristics under different oxy-fuel conditions",
volume = "58",
number = "1-2",
pages = "654-662",
doi = "10.1016/j.ijheatmasstransfer.2012.11.070"
}
Jovanović, R. D., Rasuo, B., Stefanović, P. Lj., Cvetinović, D.,& Swiatkowski, B.. (2013). Numerical investigation of pulverized coal jet flame characteristics under different oxy-fuel conditions. in International Journal of Heat and Mass Transfer, 58(1-2), 654-662.
https://doi.org/10.1016/j.ijheatmasstransfer.2012.11.070
Jovanović RD, Rasuo B, Stefanović PL, Cvetinović D, Swiatkowski B. Numerical investigation of pulverized coal jet flame characteristics under different oxy-fuel conditions. in International Journal of Heat and Mass Transfer. 2013;58(1-2):654-662.
doi:10.1016/j.ijheatmasstransfer.2012.11.070 .
Jovanović, Rastko D., Rasuo, Basko, Stefanović, Predrag Lj., Cvetinović, Dejan, Swiatkowski, Bartosz, "Numerical investigation of pulverized coal jet flame characteristics under different oxy-fuel conditions" in International Journal of Heat and Mass Transfer, 58, no. 1-2 (2013):654-662,
https://doi.org/10.1016/j.ijheatmasstransfer.2012.11.070 . .
15
15
19

Convective drying of particulate solids - Packed vs. fluid bed operation

Stakic, Milan; Stefanović, Predrag Lj.; Cvetinović, Dejan; Škobalj, Predrag D.

(2013)

TY  - JOUR
AU  - Stakic, Milan
AU  - Stefanović, Predrag Lj.
AU  - Cvetinović, Dejan
AU  - Škobalj, Predrag D.
PY  - 2013
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/5368
AB  - The paper addresses results for the case of convective drying of particulate solids in a packed and in a fluid bed, analyzing agreement between the numerical results and the results of corresponding experimental investigation, as well as the differences between packed and fluid bed operation. In the fluid bed simulation model of unsteady simultaneous one-dimensional heat and mass transfer between solids, gas phase and bubble phase during drying process, based on two-phase bubbling model, it is assumed that the gas-solid interface is at thermodynamic equilibrium. The basic idea is to calculate heat and mass transfer between gas and particles (i.e., the drying process) in suspension phase as for a packed bed of particles, where the drying rate (evaporated moisture flux) of the specific product is calculated by applying the concept of a drying coefficient. Mixing of the particles (i.e., the impact onto the heat and mass transfer coefficients) in the case of fluid bed is taken into account by means of the diffusion term in the differential equations, using an effective particle diffusion coefficient. Model validation was done on the basis of the experimental data obtained with narrow fraction of poppy seeds characterized by mean equivalent particle diameter (d(s.d) = 0.75 mm), re-wetted with required (calculated) amount of water up to the initial moisture content (X-0 = 0.54) for all experiments. Comparison of the drying kinetics, both experimental and numerical, has shown that higher gas (drying agent) temperatures, as well as velocities (flow-rates), induce faster drying. This effect is more pronounced for deeper beds, because of the larger amount of wet material to be dried using the same drying agent capacity. Bed temperature differences along the bed height are significant inside the packed bed, while in the fluid bed, for the same drying conditions, are almost negligible due to mixing of particles. Residence time is shorter in the case of a fluid bed drying compared to a packed bed drying. (C) 2012 Elsevier Ltd. All rights reserved.
T2  - International Journal of Heat and Mass Transfer
T1  - Convective drying of particulate solids - Packed vs. fluid bed operation
VL  - 59
SP  - 66
EP  - 74
DO  - 10.1016/j.ijheatmasstransfer.2012.11.078
ER  - 
@article{
author = "Stakic, Milan and Stefanović, Predrag Lj. and Cvetinović, Dejan and Škobalj, Predrag D.",
year = "2013",
abstract = "The paper addresses results for the case of convective drying of particulate solids in a packed and in a fluid bed, analyzing agreement between the numerical results and the results of corresponding experimental investigation, as well as the differences between packed and fluid bed operation. In the fluid bed simulation model of unsteady simultaneous one-dimensional heat and mass transfer between solids, gas phase and bubble phase during drying process, based on two-phase bubbling model, it is assumed that the gas-solid interface is at thermodynamic equilibrium. The basic idea is to calculate heat and mass transfer between gas and particles (i.e., the drying process) in suspension phase as for a packed bed of particles, where the drying rate (evaporated moisture flux) of the specific product is calculated by applying the concept of a drying coefficient. Mixing of the particles (i.e., the impact onto the heat and mass transfer coefficients) in the case of fluid bed is taken into account by means of the diffusion term in the differential equations, using an effective particle diffusion coefficient. Model validation was done on the basis of the experimental data obtained with narrow fraction of poppy seeds characterized by mean equivalent particle diameter (d(s.d) = 0.75 mm), re-wetted with required (calculated) amount of water up to the initial moisture content (X-0 = 0.54) for all experiments. Comparison of the drying kinetics, both experimental and numerical, has shown that higher gas (drying agent) temperatures, as well as velocities (flow-rates), induce faster drying. This effect is more pronounced for deeper beds, because of the larger amount of wet material to be dried using the same drying agent capacity. Bed temperature differences along the bed height are significant inside the packed bed, while in the fluid bed, for the same drying conditions, are almost negligible due to mixing of particles. Residence time is shorter in the case of a fluid bed drying compared to a packed bed drying. (C) 2012 Elsevier Ltd. All rights reserved.",
journal = "International Journal of Heat and Mass Transfer",
title = "Convective drying of particulate solids - Packed vs. fluid bed operation",
volume = "59",
pages = "66-74",
doi = "10.1016/j.ijheatmasstransfer.2012.11.078"
}
Stakic, M., Stefanović, P. Lj., Cvetinović, D.,& Škobalj, P. D.. (2013). Convective drying of particulate solids - Packed vs. fluid bed operation. in International Journal of Heat and Mass Transfer, 59, 66-74.
https://doi.org/10.1016/j.ijheatmasstransfer.2012.11.078
Stakic M, Stefanović PL, Cvetinović D, Škobalj PD. Convective drying of particulate solids - Packed vs. fluid bed operation. in International Journal of Heat and Mass Transfer. 2013;59:66-74.
doi:10.1016/j.ijheatmasstransfer.2012.11.078 .
Stakic, Milan, Stefanović, Predrag Lj., Cvetinović, Dejan, Škobalj, Predrag D., "Convective drying of particulate solids - Packed vs. fluid bed operation" in International Journal of Heat and Mass Transfer, 59 (2013):66-74,
https://doi.org/10.1016/j.ijheatmasstransfer.2012.11.078 . .
9
8
10

GHG (Greenhouse Gases) emission inventory and mitigation measures for public district heating plants in the Republic of Serbia

Cvetinović, Dejan; Stefanović, Predrag Lj.; Marković, Zoran M.; Bakić, Vukman; Turanjanin, Valentina; Jovanović, Marina P.; Vučićević, Biljana S.

(2013)

TY  - JOUR
AU  - Cvetinović, Dejan
AU  - Stefanović, Predrag Lj.
AU  - Marković, Zoran M.
AU  - Bakić, Vukman
AU  - Turanjanin, Valentina
AU  - Jovanović, Marina P.
AU  - Vučićević, Biljana S.
PY  - 2013
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/5636
AB  - As a non-Annex I Party to the United Nations Framework Convention on Climate Change and Kyoto Protocol signatory, the Republic of Serbia has committed to develop GHG (Greenhouse Gases) emission inventory and prepare comprehensive program of mitigation measures at national level. The paper presents results of 2000-2008 GHG emission inventory assembled for PDH (Public District Heating) sub-sector in accordance with revised IPCC (Intergovernmental Panel on Climate Change) Tier 1 methodology. Evaluation of proposed mitigation measures was performed based on 2012 and 2015 GHG emission projections, obtained for basic and four alternative scenarios, all characterized by the same energy demand but with different fuel mix used. The first alternative scenario addresses GHG emissions in case that solid fuel is substituted by natural gas. The second alternative scenario represents a sub-scenario of the first alternative scenario, with additional substitution of liquid fuel with locally available biomass. Third alternative scenario addresses emissions resulting from complete fuel switch from natural gas to liquid fuel oil, while the final alternative scenario considers the case when natural gas is the only energy resource used. GHG emission trends in the period until 2015, examined in case of previously mentioned basic and four alternative scenarios, point out to the positive impact of fuel switch on GHG emission reduction and pathways for future implementation of proposed mitigation measures. Results obtained clearly quantified assumption that fuel substitution by locally available biomass could solve environmental problems, overcome problems associated with high prices of imported fuels, improve energy supply security and increase local employment. (c) 2012 Elsevier Ltd. All rights reserved.
T2  - Energy
T1  - GHG (Greenhouse Gases) emission inventory and mitigation measures for public district heating plants in the Republic of Serbia
VL  - 57
SP  - 788
EP  - 795
DO  - 10.1016/j.energy.2012.09.063
ER  - 
@article{
author = "Cvetinović, Dejan and Stefanović, Predrag Lj. and Marković, Zoran M. and Bakić, Vukman and Turanjanin, Valentina and Jovanović, Marina P. and Vučićević, Biljana S.",
year = "2013",
abstract = "As a non-Annex I Party to the United Nations Framework Convention on Climate Change and Kyoto Protocol signatory, the Republic of Serbia has committed to develop GHG (Greenhouse Gases) emission inventory and prepare comprehensive program of mitigation measures at national level. The paper presents results of 2000-2008 GHG emission inventory assembled for PDH (Public District Heating) sub-sector in accordance with revised IPCC (Intergovernmental Panel on Climate Change) Tier 1 methodology. Evaluation of proposed mitigation measures was performed based on 2012 and 2015 GHG emission projections, obtained for basic and four alternative scenarios, all characterized by the same energy demand but with different fuel mix used. The first alternative scenario addresses GHG emissions in case that solid fuel is substituted by natural gas. The second alternative scenario represents a sub-scenario of the first alternative scenario, with additional substitution of liquid fuel with locally available biomass. Third alternative scenario addresses emissions resulting from complete fuel switch from natural gas to liquid fuel oil, while the final alternative scenario considers the case when natural gas is the only energy resource used. GHG emission trends in the period until 2015, examined in case of previously mentioned basic and four alternative scenarios, point out to the positive impact of fuel switch on GHG emission reduction and pathways for future implementation of proposed mitigation measures. Results obtained clearly quantified assumption that fuel substitution by locally available biomass could solve environmental problems, overcome problems associated with high prices of imported fuels, improve energy supply security and increase local employment. (c) 2012 Elsevier Ltd. All rights reserved.",
journal = "Energy",
title = "GHG (Greenhouse Gases) emission inventory and mitigation measures for public district heating plants in the Republic of Serbia",
volume = "57",
pages = "788-795",
doi = "10.1016/j.energy.2012.09.063"
}
Cvetinović, D., Stefanović, P. Lj., Marković, Z. M., Bakić, V., Turanjanin, V., Jovanović, M. P.,& Vučićević, B. S.. (2013). GHG (Greenhouse Gases) emission inventory and mitigation measures for public district heating plants in the Republic of Serbia. in Energy, 57, 788-795.
https://doi.org/10.1016/j.energy.2012.09.063
Cvetinović D, Stefanović PL, Marković ZM, Bakić V, Turanjanin V, Jovanović MP, Vučićević BS. GHG (Greenhouse Gases) emission inventory and mitigation measures for public district heating plants in the Republic of Serbia. in Energy. 2013;57:788-795.
doi:10.1016/j.energy.2012.09.063 .
Cvetinović, Dejan, Stefanović, Predrag Lj., Marković, Zoran M., Bakić, Vukman, Turanjanin, Valentina, Jovanović, Marina P., Vučićević, Biljana S., "GHG (Greenhouse Gases) emission inventory and mitigation measures for public district heating plants in the Republic of Serbia" in Energy, 57 (2013):788-795,
https://doi.org/10.1016/j.energy.2012.09.063 . .
5
9
10

Improvement of existing coal fired thermal power plants performance by control systems modifications

Mikulandric, Robert; Loncar, Drazen; Cvetinović, Dejan; Spiridon, Gabriel

(2013)

TY  - JOUR
AU  - Mikulandric, Robert
AU  - Loncar, Drazen
AU  - Cvetinović, Dejan
AU  - Spiridon, Gabriel
PY  - 2013
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/5635
AB  - This paper presents possibilities of implementation of advanced combustion control concepts in selected Western Balkan thermal power plant, and particularly those based on artificial intelligence as part of primary measures for nitrogen oxide reduction in order to optimise combustion and to increase plant efficiency. Both considered goals comply with environmental quality standards prescribed in large combustion plant directive. Due to specific characterisation of Western Balkan power sector these goals should be reached by low cost and easily implementable solution. Advanced self-learning controller has been developed and the effects of advanced control concept on combustion process have been analysed using artificial neural-network based parameter prediction model. (c) 2013 Elsevier Ltd. All rights reserved.
T2  - Energy
T1  - Improvement of existing coal fired thermal power plants performance by control systems modifications
VL  - 57
SP  - 55
EP  - 65
DO  - 10.1016/j.energy.2013.02.033
ER  - 
@article{
author = "Mikulandric, Robert and Loncar, Drazen and Cvetinović, Dejan and Spiridon, Gabriel",
year = "2013",
abstract = "This paper presents possibilities of implementation of advanced combustion control concepts in selected Western Balkan thermal power plant, and particularly those based on artificial intelligence as part of primary measures for nitrogen oxide reduction in order to optimise combustion and to increase plant efficiency. Both considered goals comply with environmental quality standards prescribed in large combustion plant directive. Due to specific characterisation of Western Balkan power sector these goals should be reached by low cost and easily implementable solution. Advanced self-learning controller has been developed and the effects of advanced control concept on combustion process have been analysed using artificial neural-network based parameter prediction model. (c) 2013 Elsevier Ltd. All rights reserved.",
journal = "Energy",
title = "Improvement of existing coal fired thermal power plants performance by control systems modifications",
volume = "57",
pages = "55-65",
doi = "10.1016/j.energy.2013.02.033"
}
Mikulandric, R., Loncar, D., Cvetinović, D.,& Spiridon, G.. (2013). Improvement of existing coal fired thermal power plants performance by control systems modifications. in Energy, 57, 55-65.
https://doi.org/10.1016/j.energy.2013.02.033
Mikulandric R, Loncar D, Cvetinović D, Spiridon G. Improvement of existing coal fired thermal power plants performance by control systems modifications. in Energy. 2013;57:55-65.
doi:10.1016/j.energy.2013.02.033 .
Mikulandric, Robert, Loncar, Drazen, Cvetinović, Dejan, Spiridon, Gabriel, "Improvement of existing coal fired thermal power plants performance by control systems modifications" in Energy, 57 (2013):55-65,
https://doi.org/10.1016/j.energy.2013.02.033 . .
10
10
12

Evaluation of Kolubara Lignite Carbon Emission Characteristics

Stefanović, Predrag Lj.; Marković, Zoran M.; Bakić, Vukman; Cvetinović, Dejan; Spasojević, Vuk D.; Živković, Nikola V.

(2012)

TY  - JOUR
AU  - Stefanović, Predrag Lj.
AU  - Marković, Zoran M.
AU  - Bakić, Vukman
AU  - Cvetinović, Dejan
AU  - Spasojević, Vuk D.
AU  - Živković, Nikola V.
PY  - 2012
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/5062
AB  - The revised Intergovernmental Panel on Climate Change guidelines for national greenhouse gas inventories recommends that more comprehensive and thus more reliable characteristics of the local fossil fuels should be used for the national greenhouse gas inventory calculations. This paper deal with the carbon emission characteristics of low-calorific lignite recovered from the Kolubara open-pit mine. The samples of coal were carefully selected in order to cover the net calorific value, ash and water content of the broad spectrum of the quality of the raw lignite supplied to the Serbian thermal power plants. Correlation analysis of the laboratory analysis data gave a linear dependency of the net calorific value on the combustible content in the coal samples. Also, linear correlation between the carbon content and the net calorific value was found. The regression analysis of experimentally determined coal characteristics implies that the carbon emission factor is dependent on the net calorific value. For the subset of raw lignite samples with the net calorific value Q(d)(r) = 6-10 MJ/kg, that is most representative for current and near future use for power generation in Serbian thermal power plants, the linear dependency CEFr (tC/TJ) = 34.407 - 0.5891.Q(d)(r) MJ/kg was proposed. Regarding the net calorific ranges of samples examined, the raw Kolubara lignite carbon emission factor is considerably higher than those recommended by Intergovernmental Panel on Climate Change Tier 1 method of 27.6 tC/TJ.
T2  - Thermal Science
T1  - Evaluation of Kolubara Lignite Carbon Emission Characteristics
VL  - 16
IS  - 3
SP  - 805
EP  - 816
DO  - 10.2298/TSCI120215130S
ER  - 
@article{
author = "Stefanović, Predrag Lj. and Marković, Zoran M. and Bakić, Vukman and Cvetinović, Dejan and Spasojević, Vuk D. and Živković, Nikola V.",
year = "2012",
abstract = "The revised Intergovernmental Panel on Climate Change guidelines for national greenhouse gas inventories recommends that more comprehensive and thus more reliable characteristics of the local fossil fuels should be used for the national greenhouse gas inventory calculations. This paper deal with the carbon emission characteristics of low-calorific lignite recovered from the Kolubara open-pit mine. The samples of coal were carefully selected in order to cover the net calorific value, ash and water content of the broad spectrum of the quality of the raw lignite supplied to the Serbian thermal power plants. Correlation analysis of the laboratory analysis data gave a linear dependency of the net calorific value on the combustible content in the coal samples. Also, linear correlation between the carbon content and the net calorific value was found. The regression analysis of experimentally determined coal characteristics implies that the carbon emission factor is dependent on the net calorific value. For the subset of raw lignite samples with the net calorific value Q(d)(r) = 6-10 MJ/kg, that is most representative for current and near future use for power generation in Serbian thermal power plants, the linear dependency CEFr (tC/TJ) = 34.407 - 0.5891.Q(d)(r) MJ/kg was proposed. Regarding the net calorific ranges of samples examined, the raw Kolubara lignite carbon emission factor is considerably higher than those recommended by Intergovernmental Panel on Climate Change Tier 1 method of 27.6 tC/TJ.",
journal = "Thermal Science",
title = "Evaluation of Kolubara Lignite Carbon Emission Characteristics",
volume = "16",
number = "3",
pages = "805-816",
doi = "10.2298/TSCI120215130S"
}
Stefanović, P. Lj., Marković, Z. M., Bakić, V., Cvetinović, D., Spasojević, V. D.,& Živković, N. V.. (2012). Evaluation of Kolubara Lignite Carbon Emission Characteristics. in Thermal Science, 16(3), 805-816.
https://doi.org/10.2298/TSCI120215130S
Stefanović PL, Marković ZM, Bakić V, Cvetinović D, Spasojević VD, Živković NV. Evaluation of Kolubara Lignite Carbon Emission Characteristics. in Thermal Science. 2012;16(3):805-816.
doi:10.2298/TSCI120215130S .
Stefanović, Predrag Lj., Marković, Zoran M., Bakić, Vukman, Cvetinović, Dejan, Spasojević, Vuk D., Živković, Nikola V., "Evaluation of Kolubara Lignite Carbon Emission Characteristics" in Thermal Science, 16, no. 3 (2012):805-816,
https://doi.org/10.2298/TSCI120215130S . .
3
6
9

Improvement of Environmental Aspects of Thermal Power Plant Operation By Advanced Control Concepts

Mikulandric, Robert A.; Loncar, Drazen M.; Cvetinović, Dejan; Spiridon, Gabriel; Schneider, Daniel R.

(2012)

TY  - JOUR
AU  - Mikulandric, Robert A.
AU  - Loncar, Drazen M.
AU  - Cvetinović, Dejan
AU  - Spiridon, Gabriel
AU  - Schneider, Daniel R.
PY  - 2012
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/5061
AB  - The necessity of the reduction of greenhouse gas emissions, as formulated in the Kyoto Protocol, imposes the need for improving environmental aspects of existing thermal power plants operation. Improvements can be reached either by efficiency increment or by implementation of emission reduction measures. Investments in refurbishment of existing plant components or in plant upgrading by flue gas desulphurization, by primary and secondary measures of nitrogen oxides reduction, or by biomass co-firing, are usually accompanied by modernisation of thermal power plant instrumentation and control system including sensors, equipment diagnostics and advanced controls. Impact of advanced control solutions implementation depends on technical characteristics and status of existing instrumentation and control systems as well as on design characteristics and actual conditions of installed plant components. Evaluation of adequacy of implementation of advanced control concepts is especially important in Western Balkan region where thermal power plants portfolio is rather diversified in terms of size, type and commissioning year and where generally poor maintenance and lack of investments in power generation sector resulted in high greenhouse gases emissions and low efficiency of plants in operation. This paper is intended to present possibilities of implementation of advanced control concepts, and particularly those based on artificial intelligence, in selected thermal power plants in order to increase plant efficiency and to lower pollutants emissions and to comply with environmental quality standards prescribed in large combustion plant directive.
T2  - Thermal Science
T1  - Improvement of Environmental Aspects of Thermal Power Plant Operation By Advanced Control Concepts
VL  - 16
IS  - 3
SP  - 759
EP  - 772
DO  - 10.2298/TSCI120510134M
ER  - 
@article{
author = "Mikulandric, Robert A. and Loncar, Drazen M. and Cvetinović, Dejan and Spiridon, Gabriel and Schneider, Daniel R.",
year = "2012",
abstract = "The necessity of the reduction of greenhouse gas emissions, as formulated in the Kyoto Protocol, imposes the need for improving environmental aspects of existing thermal power plants operation. Improvements can be reached either by efficiency increment or by implementation of emission reduction measures. Investments in refurbishment of existing plant components or in plant upgrading by flue gas desulphurization, by primary and secondary measures of nitrogen oxides reduction, or by biomass co-firing, are usually accompanied by modernisation of thermal power plant instrumentation and control system including sensors, equipment diagnostics and advanced controls. Impact of advanced control solutions implementation depends on technical characteristics and status of existing instrumentation and control systems as well as on design characteristics and actual conditions of installed plant components. Evaluation of adequacy of implementation of advanced control concepts is especially important in Western Balkan region where thermal power plants portfolio is rather diversified in terms of size, type and commissioning year and where generally poor maintenance and lack of investments in power generation sector resulted in high greenhouse gases emissions and low efficiency of plants in operation. This paper is intended to present possibilities of implementation of advanced control concepts, and particularly those based on artificial intelligence, in selected thermal power plants in order to increase plant efficiency and to lower pollutants emissions and to comply with environmental quality standards prescribed in large combustion plant directive.",
journal = "Thermal Science",
title = "Improvement of Environmental Aspects of Thermal Power Plant Operation By Advanced Control Concepts",
volume = "16",
number = "3",
pages = "759-772",
doi = "10.2298/TSCI120510134M"
}
Mikulandric, R. A., Loncar, D. M., Cvetinović, D., Spiridon, G.,& Schneider, D. R.. (2012). Improvement of Environmental Aspects of Thermal Power Plant Operation By Advanced Control Concepts. in Thermal Science, 16(3), 759-772.
https://doi.org/10.2298/TSCI120510134M
Mikulandric RA, Loncar DM, Cvetinović D, Spiridon G, Schneider DR. Improvement of Environmental Aspects of Thermal Power Plant Operation By Advanced Control Concepts. in Thermal Science. 2012;16(3):759-772.
doi:10.2298/TSCI120510134M .
Mikulandric, Robert A., Loncar, Drazen M., Cvetinović, Dejan, Spiridon, Gabriel, Schneider, Daniel R., "Improvement of Environmental Aspects of Thermal Power Plant Operation By Advanced Control Concepts" in Thermal Science, 16, no. 3 (2012):759-772,
https://doi.org/10.2298/TSCI120510134M . .
4
6
6

Possibility of Composite Silicon Nitride Plus Silicon Carbide (Si3n4-Sic) Powder Production in Thermal Plasma

Kostic, Ivota G.; Stefanovice, Predrag L. J.; Pavlović, Pavle B.; Cvetinović, Dejan

(2011)

TY  - JOUR
AU  - Kostic, Ivota G.
AU  - Stefanovice, Predrag L. J.
AU  - Pavlović, Pavle B.
AU  - Cvetinović, Dejan
PY  - 2011
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/4971
AB  - The results of equilibrium composition computation and total (including heat of formation) enthalpy calculation, in the temperature range of 1000 to 6000 and at pressure of 1 bar, for the Si-C-H-N system are presented in the paper. These data enable the determination and optimization of mass, temperature and energy parameters of the powder production process of composite silicone nitride + silicone carbide (Si3N4-SiC) by silicon powder evaporation in nitrogen plasma, followed by reactive quenching with cold methane. The way of using the system enthalpy, temperature interdependence for the prediction of temperature mass and energy parameters of the process, has been illustrated on the presented example.
T2  - High Temperature Material Processes
T1  - Possibility of Composite Silicon Nitride Plus Silicon Carbide (Si3n4-Sic) Powder Production in Thermal Plasma
VL  - 15
IS  - 4
SP  - 321
EP  - 328
ER  - 
@article{
author = "Kostic, Ivota G. and Stefanovice, Predrag L. J. and Pavlović, Pavle B. and Cvetinović, Dejan",
year = "2011",
abstract = "The results of equilibrium composition computation and total (including heat of formation) enthalpy calculation, in the temperature range of 1000 to 6000 and at pressure of 1 bar, for the Si-C-H-N system are presented in the paper. These data enable the determination and optimization of mass, temperature and energy parameters of the powder production process of composite silicone nitride + silicone carbide (Si3N4-SiC) by silicon powder evaporation in nitrogen plasma, followed by reactive quenching with cold methane. The way of using the system enthalpy, temperature interdependence for the prediction of temperature mass and energy parameters of the process, has been illustrated on the presented example.",
journal = "High Temperature Material Processes",
title = "Possibility of Composite Silicon Nitride Plus Silicon Carbide (Si3n4-Sic) Powder Production in Thermal Plasma",
volume = "15",
number = "4",
pages = "321-328"
}
Kostic, I. G., Stefanovice, P. L. J., Pavlović, P. B.,& Cvetinović, D.. (2011). Possibility of Composite Silicon Nitride Plus Silicon Carbide (Si3n4-Sic) Powder Production in Thermal Plasma. in High Temperature Material Processes, 15(4), 321-328.
Kostic IG, Stefanovice PLJ, Pavlović PB, Cvetinović D. Possibility of Composite Silicon Nitride Plus Silicon Carbide (Si3n4-Sic) Powder Production in Thermal Plasma. in High Temperature Material Processes. 2011;15(4):321-328..
Kostic, Ivota G., Stefanovice, Predrag L. J., Pavlović, Pavle B., Cvetinović, Dejan, "Possibility of Composite Silicon Nitride Plus Silicon Carbide (Si3n4-Sic) Powder Production in Thermal Plasma" in High Temperature Material Processes, 15, no. 4 (2011):321-328.
5

Numerical Analysis of Momentum, Heat and Mass Transfer Between a Nitrogen Plasma Jet and B2o3 Particles Injected in An Axisymmetric Reactor

Stefanović, Predrag Lj.; Cvetinović, Dejan; Pavlović, Pavle B.; Kostic, Z.

(2010)

TY  - JOUR
AU  - Stefanović, Predrag Lj.
AU  - Cvetinović, Dejan
AU  - Pavlović, Pavle B.
AU  - Kostic, Z.
PY  - 2010
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/2561
AB  - For thermal plasma processing of solid particles (including processes like plasma spraying, spheroidizing, decomposition, melting or fuming of fine particles, synthesis of ultrafine particles, etc.) injection and mixing, i.e. momentum, heat and mass transfer between solid particles and plasma flow is of great importance for the quality of the product. There are numerous effects involved in plasma-particle interactions. Effects have different ranges of influence in particular plasma process or reactor. This paper present the results of a numerical analysis of the evaporation and decomposition of B2O3 powder (with particle diameter less than 100 mu m) injected in a nitrogen plasma axisymmetric, shielded reactor. This analysis serves as a basis for the optimization of the plasma reactor parameters, used for the plasma synthesis of BN ultrafine powder or boron powder production when B2O3 powder is used as a precursor. The computed fields of stream function and plasma temperature, particle trajectories and some parameters (plasma and particle temperature, particle Re, Nu and Kn* numbers, influence of evaporation and noncontinuum effects on momentum heat and mass transfer and instantaneous particle diameter) along particle trajectories are presented and discussed.
T2  - High Temperature Material Processes
T1  - Numerical Analysis of Momentum, Heat and Mass Transfer Between a Nitrogen Plasma Jet and B2o3 Particles Injected in An Axisymmetric Reactor
VL  - 14
IS  - 4
SP  - 353
EP  - 365
DO  - 10.1615/HighTempMatProc.v14.i4.50
ER  - 
@article{
author = "Stefanović, Predrag Lj. and Cvetinović, Dejan and Pavlović, Pavle B. and Kostic, Z.",
year = "2010",
abstract = "For thermal plasma processing of solid particles (including processes like plasma spraying, spheroidizing, decomposition, melting or fuming of fine particles, synthesis of ultrafine particles, etc.) injection and mixing, i.e. momentum, heat and mass transfer between solid particles and plasma flow is of great importance for the quality of the product. There are numerous effects involved in plasma-particle interactions. Effects have different ranges of influence in particular plasma process or reactor. This paper present the results of a numerical analysis of the evaporation and decomposition of B2O3 powder (with particle diameter less than 100 mu m) injected in a nitrogen plasma axisymmetric, shielded reactor. This analysis serves as a basis for the optimization of the plasma reactor parameters, used for the plasma synthesis of BN ultrafine powder or boron powder production when B2O3 powder is used as a precursor. The computed fields of stream function and plasma temperature, particle trajectories and some parameters (plasma and particle temperature, particle Re, Nu and Kn* numbers, influence of evaporation and noncontinuum effects on momentum heat and mass transfer and instantaneous particle diameter) along particle trajectories are presented and discussed.",
journal = "High Temperature Material Processes",
title = "Numerical Analysis of Momentum, Heat and Mass Transfer Between a Nitrogen Plasma Jet and B2o3 Particles Injected in An Axisymmetric Reactor",
volume = "14",
number = "4",
pages = "353-365",
doi = "10.1615/HighTempMatProc.v14.i4.50"
}
Stefanović, P. Lj., Cvetinović, D., Pavlović, P. B.,& Kostic, Z.. (2010). Numerical Analysis of Momentum, Heat and Mass Transfer Between a Nitrogen Plasma Jet and B2o3 Particles Injected in An Axisymmetric Reactor. in High Temperature Material Processes, 14(4), 353-365.
https://doi.org/10.1615/HighTempMatProc.v14.i4.50
Stefanović PL, Cvetinović D, Pavlović PB, Kostic Z. Numerical Analysis of Momentum, Heat and Mass Transfer Between a Nitrogen Plasma Jet and B2o3 Particles Injected in An Axisymmetric Reactor. in High Temperature Material Processes. 2010;14(4):353-365.
doi:10.1615/HighTempMatProc.v14.i4.50 .
Stefanović, Predrag Lj., Cvetinović, Dejan, Pavlović, Pavle B., Kostic, Z., "Numerical Analysis of Momentum, Heat and Mass Transfer Between a Nitrogen Plasma Jet and B2o3 Particles Injected in An Axisymmetric Reactor" in High Temperature Material Processes, 14, no. 4 (2010):353-365,
https://doi.org/10.1615/HighTempMatProc.v14.i4.50 . .

Investigation of Pressure Pulsations in the Furnace and Flue Gas Tract of the Pulverized Coal Combustion Utility Boiler

Erić, Milić D.; Cvetinović, Dejan; Stefanović, Predrag Lj.; Radovanovic, Predrag M.; Živković, Nikola V.

(2010)

TY  - JOUR
AU  - Erić, Milić D.
AU  - Cvetinović, Dejan
AU  - Stefanović, Predrag Lj.
AU  - Radovanovic, Predrag M.
AU  - Živković, Nikola V.
PY  - 2010
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/3987
AB  - The paper presents new experimental method developed and new measuring system developed and installed into flame-gas tract of utility boiler. Investigations have been performed at the steam boiler of unit 2 at TPP Ptolemais. Ptolemais, Greece. which suffered from very unstable combustion and great pressure oscillations Experimental method. based on high-speed acquisition system. was developed and used for detection of pressure oscillations and determination of the origin of boiler unstable operation. Signals were obtained from piezoelectric pressure sensors located along the flame-gas tract of the steam boiler and time and frequency domain analysis were used for post processing of collected data. Investigations of the pressure oscillations in boiler gas tract have contributed to reveal origin of the boiler unstable operation. and have been of the great help in establishing proper boiler operation
T2  - Thermal Science
T1  - Investigation of Pressure Pulsations in the Furnace and Flue Gas Tract of the Pulverized Coal Combustion Utility Boiler
VL  - 14
IS  - 1
SP  - 261
EP  - 270
DO  - 10.2298/TSCI1001261E
ER  - 
@article{
author = "Erić, Milić D. and Cvetinović, Dejan and Stefanović, Predrag Lj. and Radovanovic, Predrag M. and Živković, Nikola V.",
year = "2010",
abstract = "The paper presents new experimental method developed and new measuring system developed and installed into flame-gas tract of utility boiler. Investigations have been performed at the steam boiler of unit 2 at TPP Ptolemais. Ptolemais, Greece. which suffered from very unstable combustion and great pressure oscillations Experimental method. based on high-speed acquisition system. was developed and used for detection of pressure oscillations and determination of the origin of boiler unstable operation. Signals were obtained from piezoelectric pressure sensors located along the flame-gas tract of the steam boiler and time and frequency domain analysis were used for post processing of collected data. Investigations of the pressure oscillations in boiler gas tract have contributed to reveal origin of the boiler unstable operation. and have been of the great help in establishing proper boiler operation",
journal = "Thermal Science",
title = "Investigation of Pressure Pulsations in the Furnace and Flue Gas Tract of the Pulverized Coal Combustion Utility Boiler",
volume = "14",
number = "1",
pages = "261-270",
doi = "10.2298/TSCI1001261E"
}
Erić, M. D., Cvetinović, D., Stefanović, P. Lj., Radovanovic, P. M.,& Živković, N. V.. (2010). Investigation of Pressure Pulsations in the Furnace and Flue Gas Tract of the Pulverized Coal Combustion Utility Boiler. in Thermal Science, 14(1), 261-270.
https://doi.org/10.2298/TSCI1001261E
Erić MD, Cvetinović D, Stefanović PL, Radovanovic PM, Živković NV. Investigation of Pressure Pulsations in the Furnace and Flue Gas Tract of the Pulverized Coal Combustion Utility Boiler. in Thermal Science. 2010;14(1):261-270.
doi:10.2298/TSCI1001261E .
Erić, Milić D., Cvetinović, Dejan, Stefanović, Predrag Lj., Radovanovic, Predrag M., Živković, Nikola V., "Investigation of Pressure Pulsations in the Furnace and Flue Gas Tract of the Pulverized Coal Combustion Utility Boiler" in Thermal Science, 14, no. 1 (2010):261-270,
https://doi.org/10.2298/TSCI1001261E . .
2
1

Numerical Analysis of the Flue Gas-Coal Particles Mixture Flow in Burners Distribution Channels with Regulation Shutters At the Tpp Nikola Tesla-A1 Utility Boiler

Živković, Nikola V.; Cvetinović, Dejan; Erić, Milić D.; Marković, Zoran M.

(2010)

TY  - JOUR
AU  - Živković, Nikola V.
AU  - Cvetinović, Dejan
AU  - Erić, Milić D.
AU  - Marković, Zoran M.
PY  - 2010
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/3948
AB  - Pulverized coal particles concentration distribution across the burners distribution channels, especially where plasma torches are installed, is one of the key issues for efficient implementation of plasma system for liquid fuel free combustion support at the pulverized coal fired boilers. The possibility of pulverized coal particles concentration increase at the lower burner channels of TPP Nikola Tesla - A1 boiler using regulation shutters is analyzed experimentally and numerically. Subject of present work is two-phase flue gas-particles mixture flow in burners distribution channels with regulation shutters installed at the TPP Nikola Tesla A1 boiler. Aim of this work is to optimize position of implemented system of shutters to achieve desired concentration and velocity distribution in channels with plasma torches, using numerical modelling. Experimental investigation was performed for the verification of proposed mathematical model for the prediction of the analyzed two-phase flow. Based on verified model, numerical parametric analysis was done. Obtained results of gas phase velocity field. coal particles concentration field, velocity and concentration profiles clearly show the dependence between shutters position and the coal particles mass flow rate and concentration distribution at the outlet cross-section of the burners distribution channels. According to the numerical optimization results suitable modification of the shutter system is proposed.
T2  - Thermal Science
T1  - Numerical Analysis of the Flue Gas-Coal Particles Mixture Flow in Burners Distribution Channels with Regulation Shutters At the Tpp Nikola Tesla-A1 Utility Boiler
VL  - 14
IS  - 2
SP  - 505
EP  - 520
DO  - 10.2298/TSCI1002505Z
ER  - 
@article{
author = "Živković, Nikola V. and Cvetinović, Dejan and Erić, Milić D. and Marković, Zoran M.",
year = "2010",
abstract = "Pulverized coal particles concentration distribution across the burners distribution channels, especially where plasma torches are installed, is one of the key issues for efficient implementation of plasma system for liquid fuel free combustion support at the pulverized coal fired boilers. The possibility of pulverized coal particles concentration increase at the lower burner channels of TPP Nikola Tesla - A1 boiler using regulation shutters is analyzed experimentally and numerically. Subject of present work is two-phase flue gas-particles mixture flow in burners distribution channels with regulation shutters installed at the TPP Nikola Tesla A1 boiler. Aim of this work is to optimize position of implemented system of shutters to achieve desired concentration and velocity distribution in channels with plasma torches, using numerical modelling. Experimental investigation was performed for the verification of proposed mathematical model for the prediction of the analyzed two-phase flow. Based on verified model, numerical parametric analysis was done. Obtained results of gas phase velocity field. coal particles concentration field, velocity and concentration profiles clearly show the dependence between shutters position and the coal particles mass flow rate and concentration distribution at the outlet cross-section of the burners distribution channels. According to the numerical optimization results suitable modification of the shutter system is proposed.",
journal = "Thermal Science",
title = "Numerical Analysis of the Flue Gas-Coal Particles Mixture Flow in Burners Distribution Channels with Regulation Shutters At the Tpp Nikola Tesla-A1 Utility Boiler",
volume = "14",
number = "2",
pages = "505-520",
doi = "10.2298/TSCI1002505Z"
}
Živković, N. V., Cvetinović, D., Erić, M. D.,& Marković, Z. M.. (2010). Numerical Analysis of the Flue Gas-Coal Particles Mixture Flow in Burners Distribution Channels with Regulation Shutters At the Tpp Nikola Tesla-A1 Utility Boiler. in Thermal Science, 14(2), 505-520.
https://doi.org/10.2298/TSCI1002505Z
Živković NV, Cvetinović D, Erić MD, Marković ZM. Numerical Analysis of the Flue Gas-Coal Particles Mixture Flow in Burners Distribution Channels with Regulation Shutters At the Tpp Nikola Tesla-A1 Utility Boiler. in Thermal Science. 2010;14(2):505-520.
doi:10.2298/TSCI1002505Z .
Živković, Nikola V., Cvetinović, Dejan, Erić, Milić D., Marković, Zoran M., "Numerical Analysis of the Flue Gas-Coal Particles Mixture Flow in Burners Distribution Channels with Regulation Shutters At the Tpp Nikola Tesla-A1 Utility Boiler" in Thermal Science, 14, no. 2 (2010):505-520,
https://doi.org/10.2298/TSCI1002505Z . .
2
6
6

Wind Power Plant Resilience

Afgan, Naim H.; Cvetinović, Dejan

(2010)

TY  - JOUR
AU  - Afgan, Naim H.
AU  - Cvetinović, Dejan
PY  - 2010
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/3949
AB  - A wind energy system transforms the kinetic energy of wind into mechanical or electrical energy that can be harnessed for practical use. Mechanical energy is most commonly used for pumping water in rural or remote locations. Electrical energy is obtained by connecting wind turbine with the electricity generator. The performance of the wind power plant depends on the wind kinetic energy. It depends on the number of design parameter of the wind turbine. For the wind power plant the wind kinetic energy conversion depends on the average wind velocity, mechanical energy conversion into electricity, and electricity transmission. Resilience of the wind power plant is the capacity of the system to withstand changes of the following parameters: wind velocity, mechanical energy conversion into electricity, electricity transmission efficiency a and electricity cost. Resilience index comprise following indicators: change in wind velocity, change in mechanical energy conversion efficiency, change in conversion factor. change in transmission efficiency, and change in electricity cost. The demonstration of the resilience index monitoring is presented by using following indicators, namely: average wind velocity, power production, efficiency of electricity production, and power-frequency change. In evaluation of the resilience index of wind power plants special attention is devoted to the determination of the resilience index for situation with priority given to individual indicators.
T2  - Thermal Science
T1  - Wind Power Plant Resilience
VL  - 14
IS  - 2
SP  - 533
EP  - 540
DO  - 10.2298/TSCI1002533A
ER  - 
@article{
author = "Afgan, Naim H. and Cvetinović, Dejan",
year = "2010",
abstract = "A wind energy system transforms the kinetic energy of wind into mechanical or electrical energy that can be harnessed for practical use. Mechanical energy is most commonly used for pumping water in rural or remote locations. Electrical energy is obtained by connecting wind turbine with the electricity generator. The performance of the wind power plant depends on the wind kinetic energy. It depends on the number of design parameter of the wind turbine. For the wind power plant the wind kinetic energy conversion depends on the average wind velocity, mechanical energy conversion into electricity, and electricity transmission. Resilience of the wind power plant is the capacity of the system to withstand changes of the following parameters: wind velocity, mechanical energy conversion into electricity, electricity transmission efficiency a and electricity cost. Resilience index comprise following indicators: change in wind velocity, change in mechanical energy conversion efficiency, change in conversion factor. change in transmission efficiency, and change in electricity cost. The demonstration of the resilience index monitoring is presented by using following indicators, namely: average wind velocity, power production, efficiency of electricity production, and power-frequency change. In evaluation of the resilience index of wind power plants special attention is devoted to the determination of the resilience index for situation with priority given to individual indicators.",
journal = "Thermal Science",
title = "Wind Power Plant Resilience",
volume = "14",
number = "2",
pages = "533-540",
doi = "10.2298/TSCI1002533A"
}
Afgan, N. H.,& Cvetinović, D.. (2010). Wind Power Plant Resilience. in Thermal Science, 14(2), 533-540.
https://doi.org/10.2298/TSCI1002533A
Afgan NH, Cvetinović D. Wind Power Plant Resilience. in Thermal Science. 2010;14(2):533-540.
doi:10.2298/TSCI1002533A .
Afgan, Naim H., Cvetinović, Dejan, "Wind Power Plant Resilience" in Thermal Science, 14, no. 2 (2010):533-540,
https://doi.org/10.2298/TSCI1002533A . .
7
2
4

Turbulent two-phase flow Modeling of air-coal mixture channels with single blade turbulators

Jovanović, Rastko D.; Swiatkowski, Bartosz; Cvetinović, Dejan; Stefanović, Predrag Lj.; Marković, Zoran M.; Pavlović, Zoran

(2007)

TY  - CONF
AU  - Jovanović, Rastko D.
AU  - Swiatkowski, Bartosz
AU  - Cvetinović, Dejan
AU  - Stefanović, Predrag Lj.
AU  - Marković, Zoran M.
AU  - Pavlović, Zoran
PY  - 2007
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/6703
AB  - The subject of this work is turbulent two-phase flow through air-coal channel(s) of complex geometry. The aim of this work is numerical optimization of fluid flow and coal particles distribution. A few proposed variants of the single blade turbulator, which has a role to increase turbulence in vertical section of air-coal mixture channel, were numerically investigated. More uniform coal particle distribution was achieved using single blade turbulators.
C3  - AIP Conference Proceedings
T1  - Turbulent two-phase flow Modeling of air-coal mixture channels with single blade turbulators
VL  - 936
SP  - 300
EP  - +
ER  - 
@conference{
author = "Jovanović, Rastko D. and Swiatkowski, Bartosz and Cvetinović, Dejan and Stefanović, Predrag Lj. and Marković, Zoran M. and Pavlović, Zoran",
year = "2007",
abstract = "The subject of this work is turbulent two-phase flow through air-coal channel(s) of complex geometry. The aim of this work is numerical optimization of fluid flow and coal particles distribution. A few proposed variants of the single blade turbulator, which has a role to increase turbulence in vertical section of air-coal mixture channel, were numerically investigated. More uniform coal particle distribution was achieved using single blade turbulators.",
journal = "AIP Conference Proceedings",
title = "Turbulent two-phase flow Modeling of air-coal mixture channels with single blade turbulators",
volume = "936",
pages = "300-+"
}
Jovanović, R. D., Swiatkowski, B., Cvetinović, D., Stefanović, P. Lj., Marković, Z. M.,& Pavlović, Z.. (2007). Turbulent two-phase flow Modeling of air-coal mixture channels with single blade turbulators. in AIP Conference Proceedings, 936, 300-+.
Jovanović RD, Swiatkowski B, Cvetinović D, Stefanović PL, Marković ZM, Pavlović Z. Turbulent two-phase flow Modeling of air-coal mixture channels with single blade turbulators. in AIP Conference Proceedings. 2007;936:300-+..
Jovanović, Rastko D., Swiatkowski, Bartosz, Cvetinović, Dejan, Stefanović, Predrag Lj., Marković, Zoran M., Pavlović, Zoran, "Turbulent two-phase flow Modeling of air-coal mixture channels with single blade turbulators" in AIP Conference Proceedings, 936 (2007):300-+.
2

Optimal plasma process routes for boron nitride (BN) powder production from boric acid (H3BO3)

Kostic, ZG; Stefanović, Predrag Lj.; Pavlović, Pavle B.; Cvetinović, Dejan; Sikmanovic, SD

(2000)

TY  - JOUR
AU  - Kostic, ZG
AU  - Stefanović, Predrag Lj.
AU  - Pavlović, Pavle B.
AU  - Cvetinović, Dejan
AU  - Sikmanovic, SD
PY  - 2000
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/2321
AB  - The results of equilibrium composition and total enthalpy computation in the temperature range of 1000 to 6000 K and at pressure of 1 bar, for the systems LT (BOHN)under bar GT and LT (BOCHN)under bar GT are presented in the paper. These data enable the determination, and optimization of mass, temperature and energy parameters of the process for ultrafine boron nitride powder production by the boric acid (H3BO3) decomposition in nitrogen plasma, followed by reactive quenching with cold methane or propane-butane gas. In both cases for the optimized processes yield of boron nitride powder can be up to 100% in wide temperature range. (C) 2000 Elsevier Science Ltd and Techna S.r.l. All rights reserved.
T2  - Ceramics International
T1  - Optimal plasma process routes for boron nitride (BN) powder production from boric acid (H3BO3)
VL  - 26
IS  - 2
SP  - 165
EP  - 170
DO  - 10.1016/S0272-8842(99)00036-X
ER  - 
@article{
author = "Kostic, ZG and Stefanović, Predrag Lj. and Pavlović, Pavle B. and Cvetinović, Dejan and Sikmanovic, SD",
year = "2000",
abstract = "The results of equilibrium composition and total enthalpy computation in the temperature range of 1000 to 6000 K and at pressure of 1 bar, for the systems LT (BOHN)under bar GT and LT (BOCHN)under bar GT are presented in the paper. These data enable the determination, and optimization of mass, temperature and energy parameters of the process for ultrafine boron nitride powder production by the boric acid (H3BO3) decomposition in nitrogen plasma, followed by reactive quenching with cold methane or propane-butane gas. In both cases for the optimized processes yield of boron nitride powder can be up to 100% in wide temperature range. (C) 2000 Elsevier Science Ltd and Techna S.r.l. All rights reserved.",
journal = "Ceramics International",
title = "Optimal plasma process routes for boron nitride (BN) powder production from boric acid (H3BO3)",
volume = "26",
number = "2",
pages = "165-170",
doi = "10.1016/S0272-8842(99)00036-X"
}
Kostic, Z., Stefanović, P. Lj., Pavlović, P. B., Cvetinović, D.,& Sikmanovic, S.. (2000). Optimal plasma process routes for boron nitride (BN) powder production from boric acid (H3BO3). in Ceramics International, 26(2), 165-170.
https://doi.org/10.1016/S0272-8842(99)00036-X
Kostic Z, Stefanović PL, Pavlović PB, Cvetinović D, Sikmanovic S. Optimal plasma process routes for boron nitride (BN) powder production from boric acid (H3BO3). in Ceramics International. 2000;26(2):165-170.
doi:10.1016/S0272-8842(99)00036-X .
Kostic, ZG, Stefanović, Predrag Lj., Pavlović, Pavle B., Cvetinović, Dejan, Sikmanovic, SD, "Optimal plasma process routes for boron nitride (BN) powder production from boric acid (H3BO3)" in Ceramics International, 26, no. 2 (2000):165-170,
https://doi.org/10.1016/S0272-8842(99)00036-X . .
2
4
3