TY  - JOUR
AU  - Repić, Branislav
AU  - Mladenović, Milica
AU  - Marinković, Ana
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12772
AB  - Combustion of coals and biomass in boiler furnaces leads to formation of fireside deposits on irradiated and convective surfaces. This problem is not a new one, but it became one of the main operational problems in boilers using low rank coal and some sort of biomass. In the paper presented are the results of research of ash deposit processes in laboratory conditions. An experimental furnace was used for these purposes. The experiments were performed on a tubular experimental furnace which ensures appropriate temperature and mass transfer conditions for physical and chemical transformations of the mineral matter of fuel as in real conditions. The main working parameters can be varied in wide ranges. The influence of grinding fineness, excess air and wall surface temperature was analysed. Also, an ash related problems during coal and biomass combustion was considered. Key empirical correlations for slagging and fouling were tested. Two types of Serbian coals (Kolubara and Kosovo) and several biomasses were analysed. It was shown that many sorts of biomass and Kosovo coal have a great propensity to slagging and fouling.
T2  - Thermal Science
T1  - Investigation of ash deposit formation on heat transfer surfaces of boilers using coals and biomass
VL  - 23
IS  - Suppl. 5
SP  - 1575
EP  - 1586
DO  - 10.2298/tsci180413285r
ER  - 

@article{
author = "Repić, Branislav and Mladenović, Milica and Marinković, Ana",
year = "2019",
abstract = "Combustion of coals and biomass in boiler furnaces leads to formation of fireside deposits on irradiated and convective surfaces. This problem is not a new one, but it became one of the main operational problems in boilers using low rank coal and some sort of biomass. In the paper presented are the results of research of ash deposit processes in laboratory conditions. An experimental furnace was used for these purposes. The experiments were performed on a tubular experimental furnace which ensures appropriate temperature and mass transfer conditions for physical and chemical transformations of the mineral matter of fuel as in real conditions. The main working parameters can be varied in wide ranges. The influence of grinding fineness, excess air and wall surface temperature was analysed. Also, an ash related problems during coal and biomass combustion was considered. Key empirical correlations for slagging and fouling were tested. Two types of Serbian coals (Kolubara and Kosovo) and several biomasses were analysed. It was shown that many sorts of biomass and Kosovo coal have a great propensity to slagging and fouling.",
journal = "Thermal Science",
title = "Investigation of ash deposit formation on heat transfer surfaces of boilers using coals and biomass",
volume = "23",
number = "Suppl. 5",
pages = "1575-1586",
doi = "10.2298/tsci180413285r"
}

Repić, B., Mladenović, M.,& Marinković, A.. (2019). Investigation of ash deposit formation on heat transfer surfaces of boilers using coals and biomass. in Thermal Science, 23(Suppl. 5), 1575-1586.
https://doi.org/10.2298/tsci180413285r

Repić B, Mladenović M, Marinković A. Investigation of ash deposit formation on heat transfer surfaces of boilers using coals and biomass. in Thermal Science. 2019;23(Suppl. 5):1575-1586.
doi:10.2298/tsci180413285r .

Repić, Branislav, Mladenović, Milica, Marinković, Ana, "Investigation of ash deposit formation on heat transfer surfaces of boilers using coals and biomass" in Thermal Science, 23, no. Suppl. 5 (2019):1575-1586,
https://doi.org/10.2298/tsci180413285r . .

TY  - JOUR
AU  - Stefanović, Predrag Lj.
AU  - Cvetinović, Dejan
AU  - Marković, Zoran J.
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 J. 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. J., 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 ZJ, 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 J., 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 . .

TY  - CONF
AU  - Marinković, Ana D.
AU  - Buha, Jovana Z.
AU  - Savić, Jasmina
AU  - Mladenović, Milica R.
AU  - Repić, Branislav
AU  - Nemoda, Stevan Đ.
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12777
AB  - Biomass combustion has many advantages compared to fossil fuels due to reduction of carbon dioxide emissions, but several issues are present during biomass combustion. One that must always be considered is emission of nitrogen oxides (NOx), which have significant impact on the environment and health. At biomass combustion, main mechanism responsible for NOx emission is oxidation of fuel-bound nitrogen. Increased NOx emissions are particularly present at agricultural biomass combustion, due to its increased nitrogen content, which is further expressed by the use of nitrogen fertilizer. Denitrification methods are classified as pre-combustion, combustion control and post-combustion (flue gas treatment) methods. Aim of this paper is to provide insight in different flue gas denitrification methods (DeNOx measures) from the review of existing literature, with emphasis on post-combustion methods, since they have higher efficiency. Also, pre-combustion and combustion control methods at agricultural biomass combustion often do not provide reduction below emission standards. Selective catalytic (SCR) and selective noncatalytic reduction (SNCR), wet scrubbing, adsorption, electron beam, electrochemical method, non-thermal plasma and microbial approach were considered. For each method, mechanism of NOx reduction is given and discussed, alongside with efficiency that could be achieved. Overall comparison of advantages and disadvantages for these methods is provided. Further research of denitrification and optimization of described methods, to overcome NOx emission problem is required. Application of these methods in commercial use and increasing their efficiency, while solving cost and methods disadvantages, is key for biomass to be used as a renewable energy source and fossil fuel replacement.
PB  - Niš : University of Niš, Faculty of Mechanical Engineering
C3  - 19th Conference on Thermal Science and Engineering of Serbia with the accompanying exhibition of equipment and achievements : Proceedings
T1  - Determination of polycyclic aromatic hydrocarbons in biomass ash from cigar burner combustion systems
SP  - 420
EP  - 430
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12777
ER  - 

@conference{
author = "Marinković, Ana D. and Buha, Jovana Z. and Savić, Jasmina and Mladenović, Milica R. and Repić, Branislav and Nemoda, Stevan Đ.",
year = "2019",
abstract = "Biomass combustion has many advantages compared to fossil fuels due to reduction of carbon dioxide emissions, but several issues are present during biomass combustion. One that must always be considered is emission of nitrogen oxides (NOx), which have significant impact on the environment and health. At biomass combustion, main mechanism responsible for NOx emission is oxidation of fuel-bound nitrogen. Increased NOx emissions are particularly present at agricultural biomass combustion, due to its increased nitrogen content, which is further expressed by the use of nitrogen fertilizer. Denitrification methods are classified as pre-combustion, combustion control and post-combustion (flue gas treatment) methods. Aim of this paper is to provide insight in different flue gas denitrification methods (DeNOx measures) from the review of existing literature, with emphasis on post-combustion methods, since they have higher efficiency. Also, pre-combustion and combustion control methods at agricultural biomass combustion often do not provide reduction below emission standards. Selective catalytic (SCR) and selective noncatalytic reduction (SNCR), wet scrubbing, adsorption, electron beam, electrochemical method, non-thermal plasma and microbial approach were considered. For each method, mechanism of NOx reduction is given and discussed, alongside with efficiency that could be achieved. Overall comparison of advantages and disadvantages for these methods is provided. Further research of denitrification and optimization of described methods, to overcome NOx emission problem is required. Application of these methods in commercial use and increasing their efficiency, while solving cost and methods disadvantages, is key for biomass to be used as a renewable energy source and fossil fuel replacement.",
publisher = "Niš : University of Niš, Faculty of Mechanical Engineering",
journal = "19th Conference on Thermal Science and Engineering of Serbia with the accompanying exhibition of equipment and achievements : Proceedings",
title = "Determination of polycyclic aromatic hydrocarbons in biomass ash from cigar burner combustion systems",
pages = "420-430",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12777"
}

Marinković, A. D., Buha, J. Z., Savić, J., Mladenović, M. R., Repić, B.,& Nemoda, S. Đ.. (2019). Determination of polycyclic aromatic hydrocarbons in biomass ash from cigar burner combustion systems. in 19th Conference on Thermal Science and Engineering of Serbia with the accompanying exhibition of equipment and achievements : Proceedings
Niš : University of Niš, Faculty of Mechanical Engineering., 420-430.
https://hdl.handle.net/21.15107/rcub_vinar_12777

Marinković AD, Buha JZ, Savić J, Mladenović MR, Repić B, Nemoda SĐ. Determination of polycyclic aromatic hydrocarbons in biomass ash from cigar burner combustion systems. in 19th Conference on Thermal Science and Engineering of Serbia with the accompanying exhibition of equipment and achievements : Proceedings. 2019;:420-430.
https://hdl.handle.net/21.15107/rcub_vinar_12777 .

Marinković, Ana D., Buha, Jovana Z., Savić, Jasmina, Mladenović, Milica R., Repić, Branislav, Nemoda, Stevan Đ., "Determination of polycyclic aromatic hydrocarbons in biomass ash from cigar burner combustion systems" in 19th Conference on Thermal Science and Engineering of Serbia with the accompanying exhibition of equipment and achievements : Proceedings (2019):420-430,
https://hdl.handle.net/21.15107/rcub_vinar_12777 .

TY  - JOUR
AU  - Erić, Aleksandar
AU  - Nemoda, Stevan
AU  - Komatina, Mirko S.
AU  - Dakić, Dragoljub V.
AU  - Repić, Branislav
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8401
AB  - The paper presents results of experimental investigation performed in order to examine kinetics of loose biomass combustion in vertical tube reactor. The investigation conducted included continuous measurement of the fuel mass loss rate, with two biomass combustion models (piston and batch model) proposed, each relying on appropriate theoretical postulates. Results obtained indicated that piston combustion model had shown better agreement between theoretical and experimental data and was therefore used to further analyse effects of excess-air on the combustion kinetics, as well as associated effects of flue gas recirculation. Recirculation of cold flue gases is used to lower peak temperature inside the furnace, as well as to reduce a zone where ash melting problems may potentially occur. During the investigation performed, effects of flue gas recirculation on the combustion process were simulated by simultaneously injecting nitrogen and air flows into the furnace. This was deemed appropriate to simulate real-life conditions prevailing in the furnace with gas recirculation. Experiments were conducted on specially designed and constructed apparatus that enabled kinetic parameters to be determined for the combustion of different types of biomass. Results obtained have indicated that quantity of air affects kinetics of biomass combustion and that increased recirculation leads to reduced biomass reaction rate. The same conclusion was reached based on the results of experiments conducted with two different types of agro-biomass, namely wheat straw and corn stalks, which are most commonly used for energy generation. Results achieved are deemed particularly important when it comes to design of new plants that utilize cigarette type combustion system, but also for development of numerical models used to simulate combustion of biomass bales, with special emphasis placed on the impact of recirculation gases on the combustion kinetics. © 2018 Energy Institute
T2  - Journal of the Energy Institute
T1  - Experimental investigation on the kinetics of biomass combustion in vertical tube reactor
VL  - 92
IS  - 4
SP  - 1077
EP  - 1090
DO  - 10.1016/j.joei.2018.06.009
ER  - 

@article{
author = "Erić, Aleksandar and Nemoda, Stevan and Komatina, Mirko S. and Dakić, Dragoljub V. and Repić, Branislav",
year = "2019",
abstract = "The paper presents results of experimental investigation performed in order to examine kinetics of loose biomass combustion in vertical tube reactor. The investigation conducted included continuous measurement of the fuel mass loss rate, with two biomass combustion models (piston and batch model) proposed, each relying on appropriate theoretical postulates. Results obtained indicated that piston combustion model had shown better agreement between theoretical and experimental data and was therefore used to further analyse effects of excess-air on the combustion kinetics, as well as associated effects of flue gas recirculation. Recirculation of cold flue gases is used to lower peak temperature inside the furnace, as well as to reduce a zone where ash melting problems may potentially occur. During the investigation performed, effects of flue gas recirculation on the combustion process were simulated by simultaneously injecting nitrogen and air flows into the furnace. This was deemed appropriate to simulate real-life conditions prevailing in the furnace with gas recirculation. Experiments were conducted on specially designed and constructed apparatus that enabled kinetic parameters to be determined for the combustion of different types of biomass. Results obtained have indicated that quantity of air affects kinetics of biomass combustion and that increased recirculation leads to reduced biomass reaction rate. The same conclusion was reached based on the results of experiments conducted with two different types of agro-biomass, namely wheat straw and corn stalks, which are most commonly used for energy generation. Results achieved are deemed particularly important when it comes to design of new plants that utilize cigarette type combustion system, but also for development of numerical models used to simulate combustion of biomass bales, with special emphasis placed on the impact of recirculation gases on the combustion kinetics. © 2018 Energy Institute",
journal = "Journal of the Energy Institute",
title = "Experimental investigation on the kinetics of biomass combustion in vertical tube reactor",
volume = "92",
number = "4",
pages = "1077-1090",
doi = "10.1016/j.joei.2018.06.009"
}

Erić, A., Nemoda, S., Komatina, M. S., Dakić, D. V.,& Repić, B.. (2019). Experimental investigation on the kinetics of biomass combustion in vertical tube reactor. in Journal of the Energy Institute, 92(4), 1077-1090.
https://doi.org/10.1016/j.joei.2018.06.009

Erić A, Nemoda S, Komatina MS, Dakić DV, Repić B. Experimental investigation on the kinetics of biomass combustion in vertical tube reactor. in Journal of the Energy Institute. 2019;92(4):1077-1090.
doi:10.1016/j.joei.2018.06.009 .

Erić, Aleksandar, Nemoda, Stevan, Komatina, Mirko S., Dakić, Dragoljub V., Repić, Branislav, "Experimental investigation on the kinetics of biomass combustion in vertical tube reactor" in Journal of the Energy Institute, 92, no. 4 (2019):1077-1090,
https://doi.org/10.1016/j.joei.2018.06.009 . .

TY  - CONF
AU  - Repić, Branislav
AU  - Erić, Aleksandar
AU  - Marinković, Ana D.
AU  - Nemoda, Stevan
AU  - Mladenović, Milica R.
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8471
AB  - In order to study the combustion process of baled biomass several experimental facility was built. During the investigations for several years certain problems were founded. In the paper presented the results of these investigations that were carried out in real and laboratory conditions. Investigation of the influence of bale quality to the process of biomass combustion shows that careful bales choosing avoid many problems in the boiler operation. Performed experimental investigation has demonstrated that the use of additives allows for safe and reliable biomass combustion, even of biomass varieties characterized by low ash melting temperature, such as wheat straw and maize. Investigation of the characteristics of biomass exposed to the process of leaching and washing indicate that the washing of wheat straw affects the chemical composition of the ash, which is reflected in the increase the ash melting temperatures. The results of the performed tests in experimental furnace in many ways help to better behavior the process of baled biomass combustion in order to avoid the exploitation problems of the use of agricultural biomass. Also, the results of this research will be used in designing and construction the new plants that will burn agricultural baled biomass. © 2019 ETA-Florence Renewable Energies.
C3  - European Biomass Conference and Exhibition Proceedings
T1  - Investigation of the influence of fuel characteristics on biomass combustion in real and laboratory conditions
SP  - 655
EP  - 666
UR  - https://hdl.handle.net/21.15107/rcub_vinar_8471
ER  - 

@conference{
author = "Repić, Branislav and Erić, Aleksandar and Marinković, Ana D. and Nemoda, Stevan and Mladenović, Milica R.",
year = "2019",
abstract = "In order to study the combustion process of baled biomass several experimental facility was built. During the investigations for several years certain problems were founded. In the paper presented the results of these investigations that were carried out in real and laboratory conditions. Investigation of the influence of bale quality to the process of biomass combustion shows that careful bales choosing avoid many problems in the boiler operation. Performed experimental investigation has demonstrated that the use of additives allows for safe and reliable biomass combustion, even of biomass varieties characterized by low ash melting temperature, such as wheat straw and maize. Investigation of the characteristics of biomass exposed to the process of leaching and washing indicate that the washing of wheat straw affects the chemical composition of the ash, which is reflected in the increase the ash melting temperatures. The results of the performed tests in experimental furnace in many ways help to better behavior the process of baled biomass combustion in order to avoid the exploitation problems of the use of agricultural biomass. Also, the results of this research will be used in designing and construction the new plants that will burn agricultural baled biomass. © 2019 ETA-Florence Renewable Energies.",
journal = "European Biomass Conference and Exhibition Proceedings",
title = "Investigation of the influence of fuel characteristics on biomass combustion in real and laboratory conditions",
pages = "655-666",
url = "https://hdl.handle.net/21.15107/rcub_vinar_8471"
}

Repić, B., Erić, A., Marinković, A. D., Nemoda, S.,& Mladenović, M. R.. (2019). Investigation of the influence of fuel characteristics on biomass combustion in real and laboratory conditions. in European Biomass Conference and Exhibition Proceedings, 655-666.
https://hdl.handle.net/21.15107/rcub_vinar_8471

Repić B, Erić A, Marinković AD, Nemoda S, Mladenović MR. Investigation of the influence of fuel characteristics on biomass combustion in real and laboratory conditions. in European Biomass Conference and Exhibition Proceedings. 2019;:655-666.
https://hdl.handle.net/21.15107/rcub_vinar_8471 .

Repić, Branislav, Erić, Aleksandar, Marinković, Ana D., Nemoda, Stevan, Mladenović, Milica R., "Investigation of the influence of fuel characteristics on biomass combustion in real and laboratory conditions" in European Biomass Conference and Exhibition Proceedings (2019):655-666,
https://hdl.handle.net/21.15107/rcub_vinar_8471 .

TY  - JOUR
AU  - Repić, Branislav
AU  - Stefanović, Predrag Lj.
AU  - Belošević, Srđan
AU  - Crnomarković, Nenad Đ.
AU  - Oka, Simeon N.
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8946
AB  - The paper presents an overview of the results of the investigations of the process-es that take place in pulverized coal combustion boilers and power plants which, in a longer period of time, were realized in the Laboratory for Thermal Engineer-ing and Energy of the "Vinca" Institute of Nuclear Sciences. The presented re-sults were published in numerous studies realized for different users, Ph. D., M. Sc., and specialist thesis, in international and domestic scientific journals and monographs, presented at numerous international and domestic scientific meet-ings, etc. The main goal of the paper is to chronologically present the results of domestic research that at one time were at an enviable international level, with concrete practical applications for domestic users. This is especially important to contrast the present situation when domestic research in this area is scarce and when the energy sector relies practically only on imported technologies and for-eign consultancy. © 2019 Society of Thermal Engineers of Serbia.
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 A
VL  - 23
IS  - Suppl. 5
SP  - S1587
EP  - S1609
DO  - 10.2298/TSCI191030443R
ER  - 

@article{
author = "Repić, Branislav and Stefanović, Predrag Lj. and Belošević, Srđan and Crnomarković, Nenad Đ. and Oka, Simeon N.",
year = "2019",
abstract = "The paper presents an overview of the results of the investigations of the process-es that take place in pulverized coal combustion boilers and power plants which, in a longer period of time, were realized in the Laboratory for Thermal Engineer-ing and Energy of the "Vinca" Institute of Nuclear Sciences. The presented re-sults were published in numerous studies realized for different users, Ph. D., M. Sc., and specialist thesis, in international and domestic scientific journals and monographs, presented at numerous international and domestic scientific meet-ings, etc. The main goal of the paper is to chronologically present the results of domestic research that at one time were at an enviable international level, with concrete practical applications for domestic users. This is especially important to contrast the present situation when domestic research in this area is scarce and when the energy sector relies practically only on imported technologies and for-eign consultancy. © 2019 Society of Thermal Engineers of Serbia.",
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 A",
volume = "23",
number = "Suppl. 5",
pages = "S1587-S1609",
doi = "10.2298/TSCI191030443R"
}

Repić, B., Stefanović, P. Lj., Belošević, S., Crnomarković, N. Đ.,& Oka, S. N.. (2019). Review of the investigations of pulverized coal combustion processes in large power plants in laboratory for thermal engineering and energy-Part A. in Thermal Science, 23(Suppl. 5), S1587-S1609.
https://doi.org/10.2298/TSCI191030443R

Repić B, Stefanović PL, Belošević S, Crnomarković NĐ, Oka SN. Review of the investigations of pulverized coal combustion processes in large power plants in laboratory for thermal engineering and energy-Part A. in Thermal Science. 2019;23(Suppl. 5):S1587-S1609.
doi:10.2298/TSCI191030443R .

Repić, Branislav, Stefanović, Predrag Lj., Belošević, Srđan, Crnomarković, Nenad Đ., Oka, Simeon N., "Review of the investigations of pulverized coal combustion processes in large power plants in laboratory for thermal engineering and energy-Part A" in Thermal Science, 23, no. Suppl. 5 (2019):S1587-S1609,
https://doi.org/10.2298/TSCI191030443R . .

TY  - JOUR
AU  - Erić, Aleksandar
AU  - Nemoda, Stevan
AU  - Komatina, Mirko
AU  - Repić, Branislav
AU  - Dakic, Dragoljub
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8989
AB  - This paper presents numerical and experimental investigations of complex and interrelated physical and chemical phenomena that occur during combustion of baled soybean residue in the furnace with the cigarette type of combustion. The result of comprehensive research is reactive flow model of biomass combustion inside furnace. Model is described by set of PDE which define momentum, heat and mass transfer processes in porous and fluid system. The main aim of developed CFD model is numerical simulation of combustion process inside the cigarette furnace. It is also used to provide deeper insight in complex processes occurring during biomass combustion. Verification of proposed numerical model was performed through comprehensive experimental tests on the experimental-industrial plant of 1.5 MW boiler for heating the greenhouses in the Agricultural Corporation in Belgrade. The tests included measurement of flow rate and air and flue gas temperature input and output values on the furnace that are taken as the boundary conditions of the developed model. Comparison of the experimental results shows satisfactory agreement with numerical results (the maximum relative deviation of calculation and measurement temperatures are 10-45%), therefore the developed mathematical model could be used to analyse the effects of structural and parametric (fuel composition, power rate, air excess etc.) changes of the facility, from the standpoint of energy efficiency and ecology.
T2  - Thermal Science
T1  - Modeling of transport processes in the cigarette principle combustion furnace
VL  - 23
IS  - Suppl. 5
SP  - 1499
EP  - 1510
DO  - 10.2298/TSCI180226318E
ER  - 

@article{
author = "Erić, Aleksandar and Nemoda, Stevan and Komatina, Mirko and Repić, Branislav and Dakic, Dragoljub",
year = "2019",
abstract = "This paper presents numerical and experimental investigations of complex and interrelated physical and chemical phenomena that occur during combustion of baled soybean residue in the furnace with the cigarette type of combustion. The result of comprehensive research is reactive flow model of biomass combustion inside furnace. Model is described by set of PDE which define momentum, heat and mass transfer processes in porous and fluid system. The main aim of developed CFD model is numerical simulation of combustion process inside the cigarette furnace. It is also used to provide deeper insight in complex processes occurring during biomass combustion. Verification of proposed numerical model was performed through comprehensive experimental tests on the experimental-industrial plant of 1.5 MW boiler for heating the greenhouses in the Agricultural Corporation in Belgrade. The tests included measurement of flow rate and air and flue gas temperature input and output values on the furnace that are taken as the boundary conditions of the developed model. Comparison of the experimental results shows satisfactory agreement with numerical results (the maximum relative deviation of calculation and measurement temperatures are 10-45%), therefore the developed mathematical model could be used to analyse the effects of structural and parametric (fuel composition, power rate, air excess etc.) changes of the facility, from the standpoint of energy efficiency and ecology.",
journal = "Thermal Science",
title = "Modeling of transport processes in the cigarette principle combustion furnace",
volume = "23",
number = "Suppl. 5",
pages = "1499-1510",
doi = "10.2298/TSCI180226318E"
}

Erić, A., Nemoda, S., Komatina, M., Repić, B.,& Dakic, D.. (2019). Modeling of transport processes in the cigarette principle combustion furnace. in Thermal Science, 23(Suppl. 5), 1499-1510.
https://doi.org/10.2298/TSCI180226318E

Erić A, Nemoda S, Komatina M, Repić B, Dakic D. Modeling of transport processes in the cigarette principle combustion furnace. in Thermal Science. 2019;23(Suppl. 5):1499-1510.
doi:10.2298/TSCI180226318E .

Erić, Aleksandar, Nemoda, Stevan, Komatina, Mirko, Repić, Branislav, Dakic, Dragoljub, "Modeling of transport processes in the cigarette principle combustion furnace" in Thermal Science, 23, no. Suppl. 5 (2019):1499-1510,
https://doi.org/10.2298/TSCI180226318E . .

TY  - CONF
AU  - Repić, Branislav
AU  - Erić, Aleksandar
AU  - Nemoda, Stevan
AU  - Mladenović, Milica
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11599
AB  - Sagorevanje goriva pomoću vrtložnih gorionika, korišćenjem efekta vihornog strujanja, je vrlo značajno i široko rasprostranjeno. Proračun vrtložnih gorionika je relativno složen proračun i zahteva obučenog projektanta. S obzirom da je ručnim proračunom teško razmotriti različite varijante komponovanja gorionika to predstavlja ograničavajući faktor pravilnog projektovanja. U radu je izložen softver za proračun i dimenzionisanje vrtložnih gorionika. On omogućuje da se provere sve one varijante komponovanja gorionika u odnosu na razne karakteristike goriva i raspodele vazduha i izabere optimalna konstrukcija gorionika. Programom je obuhvaćeno više varijanti gorionika. Proračun je primenjiv za čvrsto sprašeno gorivo i gasovito gorivo. Program je napravljen tako, da se na osnovu izabranih polaznih podataka izvrši dimenzionisanje i interaktivni proračun gorionika, te da se, na osnovu standardnih konstruktivnih materijala, izabere optimalna konstrukcija gorionika.
AB  - Combustion   of   fuel   with   swirl   burners,   using   swirl   flow   effect   is   very   significant   and   widespread.  Calculation  of  swirl  burners  is  relatively  complex  calculation  and  requires  a  trained  designer. Since it is difficult by manually calculation consider different variants of composing burners it is a limiting factor in the proper design. In the paper presents is the software for the calculation and dimensioning of swirl burners. It allows checking all those variants of burner composition in relation to  the  various  fuels  characteristics  and  airing  distribution,  and  determined  the  optimal  design  of  the  burner.  The  program  includes  several  variants  of  burners.  Calculation  is  applicable  for  pulverized  solid fuel and gas fuel. The program is designed so, based on the selected baseline data executed inte-ractive dimensioning and calculation of the burner, and that, on the basis of standard structural mate-rials, determined the optimal design of the burner.
PB  - Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS) : Društvo za procesnu tehniku
C3  - 30. Međunarodni kongres o procesnoj industriji - PROCESING ′17 : zbornik radova
T1  - Proračun i dimenzionisanje vrtložnih gorionika korišćenjem namenskog softvera
T1  - Calculation and design of swirl burners  using dedicated software
SP  - 357
EP  - 364
DO  - 10.24094/ptk.017.30.1.357
ER  - 

@conference{
author = "Repić, Branislav and Erić, Aleksandar and Nemoda, Stevan and Mladenović, Milica",
year = "2017",
abstract = "Sagorevanje goriva pomoću vrtložnih gorionika, korišćenjem efekta vihornog strujanja, je vrlo značajno i široko rasprostranjeno. Proračun vrtložnih gorionika je relativno složen proračun i zahteva obučenog projektanta. S obzirom da je ručnim proračunom teško razmotriti različite varijante komponovanja gorionika to predstavlja ograničavajući faktor pravilnog projektovanja. U radu je izložen softver za proračun i dimenzionisanje vrtložnih gorionika. On omogućuje da se provere sve one varijante komponovanja gorionika u odnosu na razne karakteristike goriva i raspodele vazduha i izabere optimalna konstrukcija gorionika. Programom je obuhvaćeno više varijanti gorionika. Proračun je primenjiv za čvrsto sprašeno gorivo i gasovito gorivo. Program je napravljen tako, da se na osnovu izabranih polaznih podataka izvrši dimenzionisanje i interaktivni proračun gorionika, te da se, na osnovu standardnih konstruktivnih materijala, izabere optimalna konstrukcija gorionika., Combustion   of   fuel   with   swirl   burners,   using   swirl   flow   effect   is   very   significant   and   widespread.  Calculation  of  swirl  burners  is  relatively  complex  calculation  and  requires  a  trained  designer. Since it is difficult by manually calculation consider different variants of composing burners it is a limiting factor in the proper design. In the paper presents is the software for the calculation and dimensioning of swirl burners. It allows checking all those variants of burner composition in relation to  the  various  fuels  characteristics  and  airing  distribution,  and  determined  the  optimal  design  of  the  burner.  The  program  includes  several  variants  of  burners.  Calculation  is  applicable  for  pulverized  solid fuel and gas fuel. The program is designed so, based on the selected baseline data executed inte-ractive dimensioning and calculation of the burner, and that, on the basis of standard structural mate-rials, determined the optimal design of the burner.",
publisher = "Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS) : Društvo za procesnu tehniku",
journal = "30. Međunarodni kongres o procesnoj industriji - PROCESING ′17 : zbornik radova",
title = "Proračun i dimenzionisanje vrtložnih gorionika korišćenjem namenskog softvera, Calculation and design of swirl burners  using dedicated software",
pages = "357-364",
doi = "10.24094/ptk.017.30.1.357"
}

Repić, B., Erić, A., Nemoda, S.,& Mladenović, M.. (2017). Proračun i dimenzionisanje vrtložnih gorionika korišćenjem namenskog softvera. in 30. Međunarodni kongres o procesnoj industriji - PROCESING ′17 : zbornik radova
Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS) : Društvo za procesnu tehniku., 357-364.
https://doi.org/10.24094/ptk.017.30.1.357

Repić B, Erić A, Nemoda S, Mladenović M. Proračun i dimenzionisanje vrtložnih gorionika korišćenjem namenskog softvera. in 30. Međunarodni kongres o procesnoj industriji - PROCESING ′17 : zbornik radova. 2017;:357-364.
doi:10.24094/ptk.017.30.1.357 .

Repić, Branislav, Erić, Aleksandar, Nemoda, Stevan, Mladenović, Milica, "Proračun i dimenzionisanje vrtložnih gorionika korišćenjem namenskog softvera" in 30. Međunarodni kongres o procesnoj industriji - PROCESING ′17 : zbornik radova (2017):357-364,
https://doi.org/10.24094/ptk.017.30.1.357 . .

TY  - CONF
AU  - Mladenović, Milica
AU  - Marinković, Ana
AU  - Paprika, Milijana
AU  - Repić, Branislav
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11600
AB  - Iako se sagorevanje biomase promoviše sa stanovišta očuvanja životne sredine zbog značajno manje emisije štetnih gasova nego pri sagorevanju najzastupljenijeg domaćeg fosilnog goriva-uglja, eksperimenti sagorevanja više tipova biomase su pokazali da se i ovim sagorevanjem emituje izvesna količina polutanata koju je potrebno kontrolisati. Emisija azotnih oksida (NOx) je jedan od najvećih izazova u tom pogledu. Poznavanje i kontrolisanje emisije ovih oksida prilikom sagorevanja biomase je neophodno radi uspostavljanja korektnih zakonskih normi u pogledu granične emisije i za razvoj što kvalitetnijih tehnologija za sagorevanje ove vrste goriva. U tom cilju u radu je dat opis eksperimentalne aparature, koja ima za cilj da ispita efikasan način za redukciju NOx-a u dimnim gasovima upotrebom sekundarnih mera denitrifikacije. Takođe su dati i termički proračuni parametara sagorevanja u eksperimentalnom adijabatskom ložištu.
AB  - Even though biomass combustion is promoted from the standpoint of environmental protection due to significantly lower emissions in comparison to combustion of the predominate domestic fossil fuel –coal, combustion experiments with several types of biomass showed that the combustion emits a certain amount of pollutants which needs to be controlled. Emissions of nitrogen oxides (NOx) is one of the biggest challenges in this regard. Knowing and controlling the emissions of these oxides during the combustion ofbiomass is required for correct establishment of legal norms in terms of the emis-sions limits and to develop better technologies for combustion of these fuels. In that sense, the paper gives a description of the new experimental apparatus, which aims to explore an effective way to re-duce NOx in the exhaust gas, using the secondary denitrification methods. The calculation of the main combustion parameters in the experimental adiabatic furnace are also given here
PB  - Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS) : Društvo za procesnu tehniku
C3  - 30. Međunarodni kongres o procesnoj industriji - PROCESING ′17 : zbornik radova
T1  - Eksperimentalna aparatura za simulaciju sagorevanja biomase i kontrolu azotnih oksida
T1  - Experimental apparatus for simulation of biomass combustion and control of nitrogen oxide
SP  - 175
EP  - 182
DO  - 10.24094/ptk.017.30.1.175
ER  - 

@conference{
author = "Mladenović, Milica and Marinković, Ana and Paprika, Milijana and Repić, Branislav",
year = "2017",
abstract = "Iako se sagorevanje biomase promoviše sa stanovišta očuvanja životne sredine zbog značajno manje emisije štetnih gasova nego pri sagorevanju najzastupljenijeg domaćeg fosilnog goriva-uglja, eksperimenti sagorevanja više tipova biomase su pokazali da se i ovim sagorevanjem emituje izvesna količina polutanata koju je potrebno kontrolisati. Emisija azotnih oksida (NOx) je jedan od najvećih izazova u tom pogledu. Poznavanje i kontrolisanje emisije ovih oksida prilikom sagorevanja biomase je neophodno radi uspostavljanja korektnih zakonskih normi u pogledu granične emisije i za razvoj što kvalitetnijih tehnologija za sagorevanje ove vrste goriva. U tom cilju u radu je dat opis eksperimentalne aparature, koja ima za cilj da ispita efikasan način za redukciju NOx-a u dimnim gasovima upotrebom sekundarnih mera denitrifikacije. Takođe su dati i termički proračuni parametara sagorevanja u eksperimentalnom adijabatskom ložištu., Even though biomass combustion is promoted from the standpoint of environmental protection due to significantly lower emissions in comparison to combustion of the predominate domestic fossil fuel –coal, combustion experiments with several types of biomass showed that the combustion emits a certain amount of pollutants which needs to be controlled. Emissions of nitrogen oxides (NOx) is one of the biggest challenges in this regard. Knowing and controlling the emissions of these oxides during the combustion ofbiomass is required for correct establishment of legal norms in terms of the emis-sions limits and to develop better technologies for combustion of these fuels. In that sense, the paper gives a description of the new experimental apparatus, which aims to explore an effective way to re-duce NOx in the exhaust gas, using the secondary denitrification methods. The calculation of the main combustion parameters in the experimental adiabatic furnace are also given here",
publisher = "Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS) : Društvo za procesnu tehniku",
journal = "30. Međunarodni kongres o procesnoj industriji - PROCESING ′17 : zbornik radova",
title = "Eksperimentalna aparatura za simulaciju sagorevanja biomase i kontrolu azotnih oksida, Experimental apparatus for simulation of biomass combustion and control of nitrogen oxide",
pages = "175-182",
doi = "10.24094/ptk.017.30.1.175"
}

Mladenović, M., Marinković, A., Paprika, M.,& Repić, B.. (2017). Eksperimentalna aparatura za simulaciju sagorevanja biomase i kontrolu azotnih oksida. in 30. Međunarodni kongres o procesnoj industriji - PROCESING ′17 : zbornik radova
Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS) : Društvo za procesnu tehniku., 175-182.
https://doi.org/10.24094/ptk.017.30.1.175

Mladenović M, Marinković A, Paprika M, Repić B. Eksperimentalna aparatura za simulaciju sagorevanja biomase i kontrolu azotnih oksida. in 30. Međunarodni kongres o procesnoj industriji - PROCESING ′17 : zbornik radova. 2017;:175-182.
doi:10.24094/ptk.017.30.1.175 .

Mladenović, Milica, Marinković, Ana, Paprika, Milijana, Repić, Branislav, "Eksperimentalna aparatura za simulaciju sagorevanja biomase i kontrolu azotnih oksida" in 30. Međunarodni kongres o procesnoj industriji - PROCESING ′17 : zbornik radova (2017):175-182,
https://doi.org/10.24094/ptk.017.30.1.175 . .

TY  - CONF
AU  - Nemoda, Stevan
AU  - Mladenović, Milica
AU  - Paprika, Milijana
AU  - Repić, Branislav
AU  - Marinković, Ana
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11601
AB  - U radu je predložen dvodimenzijski model numeričke simulacije sagorevanja tečnih goriva u flu-idizovanom sloju, koji se zasniva na dvo fluidnom Euler – Euler pristupom modeliranja fluidizovanog sloja uz određivanje polja brzina gasa i čestica u dvofaznim, granularnim tokovima zasnovane na ana-logiji sa kinetičkom teorijom gasova (KTGF). Sveobuhvatan model kompleksnih procesa u fluidizacio-noj komori sagorevanja podrazumeva, pored određivanja polja brzina gasne i čestične faze, inkorpori-ranje energetskih jednačina gasne i čestične faze, kao i transportnih jednačina hemijskih komponenti sa izvornim članovima usled konverzije komponenata. Brojni numerički eksperimenti pokazuju da je izbor koeficijenata u izrazima za sile trenja prilikom interakcije faza ima izuzetan značaj i mora se sprovesti za svaki, značajno različit režim fluidizacije, posebno. Urađene su serije numeričkih eksperi-menata sa simulacijom procesa sagorevanja u FS sa i bez značajnog sadržaja vode u gorivu. Proračuni su nestacionarni, a modelirani vremenski period odgovara vremenu za koje gas prođe kroz celu visinu reaktora. Numerički eksperimenti, na osnovu predloženog matematičkog modela, su takođe korišćeni za potrebe analize uticaja različitih snaga pri kojima radi reaktor, kao i različitih stepena fluidizacije, na efikasnost sagorevanja kao i na profile temperatura u zoni sagorevanja.
AB  - A comprehensive 2D numerical model of the bubbled fluidized bed with combustion of liquid fuelsis proposed in the paper. The proposed numerical model is based on the Eulerian–Eulerian granular flow modeling with the kinetic theory of granular flow. The model includes the following basic governing equations: the continuity equations of the solid andgas phase, the momentum conservation equations of the gas and solid phase, the energy equations of gas, and the solid phase and conservation equations for chemical components. The choice of the semi empirical constants of the inter-phase interaction drag force model is significant and these constants must be adjusted for each particular regime of fluidiza-tion. Presented numerical experiments primarily were applied to verification of the assumptions about the impact of water content in a liquid fuel on FB combustion intensity. The numerical experiments, based on the proposed mathematical model, also have been used for the purposes of analyzing the im-pacts of various reactor powers as well as fluidization numbers, on the combustion efficiency and on combustion zone temperature fields
PB  - Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS) : Društvo za procesnu tehniku
C3  - 30. Međunarodni kongres o procesnoj industriji - PROCESING ′17 : zbornik radova
T1  - 2D CFD numerička simulacija fluidizacione komore sagorevanja bazirane na Euler-Euler granularnom modelu
T1  - 2D fluidized combustion chamber cfd simulation based on Euler-Euler granular flow model
SP  - 277
EP  - 288
DO  - 10.24094//ptk.017.30.1.277
ER  - 

@conference{
author = "Nemoda, Stevan and Mladenović, Milica and Paprika, Milijana and Repić, Branislav and Marinković, Ana",
year = "2017",
abstract = "U radu je predložen dvodimenzijski model numeričke simulacije sagorevanja tečnih goriva u flu-idizovanom sloju, koji se zasniva na dvo fluidnom Euler – Euler pristupom modeliranja fluidizovanog sloja uz određivanje polja brzina gasa i čestica u dvofaznim, granularnim tokovima zasnovane na ana-logiji sa kinetičkom teorijom gasova (KTGF). Sveobuhvatan model kompleksnih procesa u fluidizacio-noj komori sagorevanja podrazumeva, pored određivanja polja brzina gasne i čestične faze, inkorpori-ranje energetskih jednačina gasne i čestične faze, kao i transportnih jednačina hemijskih komponenti sa izvornim članovima usled konverzije komponenata. Brojni numerički eksperimenti pokazuju da je izbor koeficijenata u izrazima za sile trenja prilikom interakcije faza ima izuzetan značaj i mora se sprovesti za svaki, značajno različit režim fluidizacije, posebno. Urađene su serije numeričkih eksperi-menata sa simulacijom procesa sagorevanja u FS sa i bez značajnog sadržaja vode u gorivu. Proračuni su nestacionarni, a modelirani vremenski period odgovara vremenu za koje gas prođe kroz celu visinu reaktora. Numerički eksperimenti, na osnovu predloženog matematičkog modela, su takođe korišćeni za potrebe analize uticaja različitih snaga pri kojima radi reaktor, kao i različitih stepena fluidizacije, na efikasnost sagorevanja kao i na profile temperatura u zoni sagorevanja., A comprehensive 2D numerical model of the bubbled fluidized bed with combustion of liquid fuelsis proposed in the paper. The proposed numerical model is based on the Eulerian–Eulerian granular flow modeling with the kinetic theory of granular flow. The model includes the following basic governing equations: the continuity equations of the solid andgas phase, the momentum conservation equations of the gas and solid phase, the energy equations of gas, and the solid phase and conservation equations for chemical components. The choice of the semi empirical constants of the inter-phase interaction drag force model is significant and these constants must be adjusted for each particular regime of fluidiza-tion. Presented numerical experiments primarily were applied to verification of the assumptions about the impact of water content in a liquid fuel on FB combustion intensity. The numerical experiments, based on the proposed mathematical model, also have been used for the purposes of analyzing the im-pacts of various reactor powers as well as fluidization numbers, on the combustion efficiency and on combustion zone temperature fields",
publisher = "Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS) : Društvo za procesnu tehniku",
journal = "30. Međunarodni kongres o procesnoj industriji - PROCESING ′17 : zbornik radova",
title = "2D CFD numerička simulacija fluidizacione komore sagorevanja bazirane na Euler-Euler granularnom modelu, 2D fluidized combustion chamber cfd simulation based on Euler-Euler granular flow model",
pages = "277-288",
doi = "10.24094//ptk.017.30.1.277"
}

Nemoda, S., Mladenović, M., Paprika, M., Repić, B.,& Marinković, A.. (2017). 2D CFD numerička simulacija fluidizacione komore sagorevanja bazirane na Euler-Euler granularnom modelu. in 30. Međunarodni kongres o procesnoj industriji - PROCESING ′17 : zbornik radova
Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS) : Društvo za procesnu tehniku., 277-288.
https://doi.org/10.24094//ptk.017.30.1.277

Nemoda S, Mladenović M, Paprika M, Repić B, Marinković A. 2D CFD numerička simulacija fluidizacione komore sagorevanja bazirane na Euler-Euler granularnom modelu. in 30. Međunarodni kongres o procesnoj industriji - PROCESING ′17 : zbornik radova. 2017;:277-288.
doi:10.24094//ptk.017.30.1.277 .

Nemoda, Stevan, Mladenović, Milica, Paprika, Milijana, Repić, Branislav, Marinković, Ana, "2D CFD numerička simulacija fluidizacione komore sagorevanja bazirane na Euler-Euler granularnom modelu" in 30. Međunarodni kongres o procesnoj industriji - PROCESING ′17 : zbornik radova (2017):277-288,
https://doi.org/10.24094//ptk.017.30.1.277 . .

TY  - JOUR
AU  - Mladenović, Milica R.
AU  - Dakić, Dragoljub V.
AU  - Nemoda, Stevan
AU  - Paprika, Milijana
AU  - Komatina, Mirko S.
AU  - Repić, Branislav
AU  - Erić, Aleksandar
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1199
AB  - Harmonization of environmental protection and the growing energy needs of modern society promote the biomass application as a replacement for fossil fuels and a viable option to mitigate the greenhouse gas emissions. For domestic conditions this is particularly important as more than 60% of renewables belongs to biomass. Beside numerous benefits of using biomass for energy purposes, there are certain drawbacks, one of which is a possible high emission of NOx during the combustion of these fuels. The paper presents the results of the experiments with multiple biomass types (soybean straw, cornstalk, grain biomass, sunflower oil, glycerin and paper sludge), using different combustion technologies (fluidized bed and cigarette combustion), with emphasis on the emission of NOx in the exhaust gas. A presentation of the experimental installations is given, as well as an evaluation of the effects of the fuel composition, combustion regimes and technology on the NOx emissions. As the biomass combustion took place at temperatures low enough that thermal and prompt NOx can be neglected, the conclusion is the emissions of nitrogen oxides primarily depend on the biomass composition - it is increasing with the increase of the nitrogen content, and decreases with the increase of the char content which provides catalytic surface for NOx reduction by CO.
T2  - Hemijska industrija
T1  - The combustion of biomass - The impact of its types and combustion technologies on the emission of nitrogen oxide
VL  - 70
IS  - 3
SP  - 287
EP  - 298
DO  - 10.2298/HEMIND150409033M
ER  - 

@article{
author = "Mladenović, Milica R. and Dakić, Dragoljub V. and Nemoda, Stevan and Paprika, Milijana and Komatina, Mirko S. and Repić, Branislav and Erić, Aleksandar",
year = "2016",
abstract = "Harmonization of environmental protection and the growing energy needs of modern society promote the biomass application as a replacement for fossil fuels and a viable option to mitigate the greenhouse gas emissions. For domestic conditions this is particularly important as more than 60% of renewables belongs to biomass. Beside numerous benefits of using biomass for energy purposes, there are certain drawbacks, one of which is a possible high emission of NOx during the combustion of these fuels. The paper presents the results of the experiments with multiple biomass types (soybean straw, cornstalk, grain biomass, sunflower oil, glycerin and paper sludge), using different combustion technologies (fluidized bed and cigarette combustion), with emphasis on the emission of NOx in the exhaust gas. A presentation of the experimental installations is given, as well as an evaluation of the effects of the fuel composition, combustion regimes and technology on the NOx emissions. As the biomass combustion took place at temperatures low enough that thermal and prompt NOx can be neglected, the conclusion is the emissions of nitrogen oxides primarily depend on the biomass composition - it is increasing with the increase of the nitrogen content, and decreases with the increase of the char content which provides catalytic surface for NOx reduction by CO.",
journal = "Hemijska industrija",
title = "The combustion of biomass - The impact of its types and combustion technologies on the emission of nitrogen oxide",
volume = "70",
number = "3",
pages = "287-298",
doi = "10.2298/HEMIND150409033M"
}

Mladenović, M. R., Dakić, D. V., Nemoda, S., Paprika, M., Komatina, M. S., Repić, B.,& Erić, A.. (2016). The combustion of biomass - The impact of its types and combustion technologies on the emission of nitrogen oxide. in Hemijska industrija, 70(3), 287-298.
https://doi.org/10.2298/HEMIND150409033M

Mladenović MR, Dakić DV, Nemoda S, Paprika M, Komatina MS, Repić B, Erić A. The combustion of biomass - The impact of its types and combustion technologies on the emission of nitrogen oxide. in Hemijska industrija. 2016;70(3):287-298.
doi:10.2298/HEMIND150409033M .

Mladenović, Milica R., Dakić, Dragoljub V., Nemoda, Stevan, Paprika, Milijana, Komatina, Mirko S., Repić, Branislav, Erić, Aleksandar, "The combustion of biomass - The impact of its types and combustion technologies on the emission of nitrogen oxide" in Hemijska industrija, 70, no. 3 (2016):287-298,
https://doi.org/10.2298/HEMIND150409033M . .

TY  - CONF
AU  - Dakić, Dragoljub V.
AU  - Paprika, Milijana
AU  - Durovic, Dejan
AU  - Repić, Branislav
AU  - Maldenovic, Milica
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7139
AB  - The paper presents a proposal for forming public-private partnerships in small towns or villages in Serbia, in order to use potential of renewable energy sources, help local economy and, possibly, help preventing village withering. The project comprises construction of thermal plants at the periphery of a small town or a village, fueled by baled biomass form neighboring fields, together with a small industrial zone next to it. The industrial facilities would include storage and processing of agricultural products. The operation of the industrial zone should be organized in a way that the plant is used for heating and industrial purposes alternately. An example of such heating facility is presented here, accompanied by a basic economic analysis.
T1  - Potential of Utilizing Agricultural Biomass for Energy Purposes within Public-Private Partnerships
UR  - https://hdl.handle.net/21.15107/rcub_vinar_7139
ER  - 

@conference{
author = "Dakić, Dragoljub V. and Paprika, Milijana and Durovic, Dejan and Repić, Branislav and Maldenovic, Milica",
year = "2016",
abstract = "The paper presents a proposal for forming public-private partnerships in small towns or villages in Serbia, in order to use potential of renewable energy sources, help local economy and, possibly, help preventing village withering. The project comprises construction of thermal plants at the periphery of a small town or a village, fueled by baled biomass form neighboring fields, together with a small industrial zone next to it. The industrial facilities would include storage and processing of agricultural products. The operation of the industrial zone should be organized in a way that the plant is used for heating and industrial purposes alternately. An example of such heating facility is presented here, accompanied by a basic economic analysis.",
title = "Potential of Utilizing Agricultural Biomass for Energy Purposes within Public-Private Partnerships",
url = "https://hdl.handle.net/21.15107/rcub_vinar_7139"
}

Dakić, D. V., Paprika, M., Durovic, D., Repić, B.,& Maldenovic, M.. (2016). Potential of Utilizing Agricultural Biomass for Energy Purposes within Public-Private Partnerships. .
https://hdl.handle.net/21.15107/rcub_vinar_7139

Dakić DV, Paprika M, Durovic D, Repić B, Maldenovic M. Potential of Utilizing Agricultural Biomass for Energy Purposes within Public-Private Partnerships. 2016;.
https://hdl.handle.net/21.15107/rcub_vinar_7139 .

Dakić, Dragoljub V., Paprika, Milijana, Durovic, Dejan, Repić, Branislav, Maldenovic, Milica, "Potential of Utilizing Agricultural Biomass for Energy Purposes within Public-Private Partnerships" (2016),
https://hdl.handle.net/21.15107/rcub_vinar_7139 .

TY  - JOUR
AU  - Erić, Aleksandar
AU  - Nemoda, Stevan
AU  - Dakić, Dragoljub V.
AU  - Repić, Branislav
AU  - Đurović, Dejan M.
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1141
AB  - The paper presents results of experimental and numerical investigation addressing combustion of baled agricultural biomass in a 50 kW experimental furnace equipped with cigar burners. Experiments performed included measurements of all parameters deemed important for mass and energy balance, as well as parameters defining quality of the combustion process. Experimental results were compared with results of numerical simulations performed with previously developed CFD model. The model takes into account complex thermo mechanical combustion processes occurring in a porous layer of biomass bales and the surrounding fluid. The combustion process and the corresponding model were deemed stationary. Comparison of experimental and numerical results obtained through research presented in this paper showed satisfactory correspondence, leading to the conclusion that the model developed could be used for analysis of different effects associated with variations in process parameters and/or structural modifications in industrial biomass facilities. Mathematical model developed was also utilized to examine the impact of gas re-circulation on maximum temperatures in the combustion chamber. Gas re-circulation was found to have positive effect on the reduction of maximum temperature in the combustion chamber, as well as on the reduction of maximum temperature zone in the chamber. The conclusions made provided valuable inputs towards prevention of biomass ash sintering, which occurs at higher temperatures and negatively affects biomass combustion process.
T2  - Thermal Science
T1  - Experimental and Numerical Study on Combustion of Baled Biomass in Cigar Burners and Effects of Flue Gas Re-Circulation
VL  - 20
SP  - S151
EP  - S165
DO  - 10.2298/TSCI150827207E
ER  - 

@article{
author = "Erić, Aleksandar and Nemoda, Stevan and Dakić, Dragoljub V. and Repić, Branislav and Đurović, Dejan M.",
year = "2016",
abstract = "The paper presents results of experimental and numerical investigation addressing combustion of baled agricultural biomass in a 50 kW experimental furnace equipped with cigar burners. Experiments performed included measurements of all parameters deemed important for mass and energy balance, as well as parameters defining quality of the combustion process. Experimental results were compared with results of numerical simulations performed with previously developed CFD model. The model takes into account complex thermo mechanical combustion processes occurring in a porous layer of biomass bales and the surrounding fluid. The combustion process and the corresponding model were deemed stationary. Comparison of experimental and numerical results obtained through research presented in this paper showed satisfactory correspondence, leading to the conclusion that the model developed could be used for analysis of different effects associated with variations in process parameters and/or structural modifications in industrial biomass facilities. Mathematical model developed was also utilized to examine the impact of gas re-circulation on maximum temperatures in the combustion chamber. Gas re-circulation was found to have positive effect on the reduction of maximum temperature in the combustion chamber, as well as on the reduction of maximum temperature zone in the chamber. The conclusions made provided valuable inputs towards prevention of biomass ash sintering, which occurs at higher temperatures and negatively affects biomass combustion process.",
journal = "Thermal Science",
title = "Experimental and Numerical Study on Combustion of Baled Biomass in Cigar Burners and Effects of Flue Gas Re-Circulation",
volume = "20",
pages = "S151-S165",
doi = "10.2298/TSCI150827207E"
}

Erić, A., Nemoda, S., Dakić, D. V., Repić, B.,& Đurović, D. M.. (2016). Experimental and Numerical Study on Combustion of Baled Biomass in Cigar Burners and Effects of Flue Gas Re-Circulation. in Thermal Science, 20, S151-S165.
https://doi.org/10.2298/TSCI150827207E

Erić A, Nemoda S, Dakić DV, Repić B, Đurović DM. Experimental and Numerical Study on Combustion of Baled Biomass in Cigar Burners and Effects of Flue Gas Re-Circulation. in Thermal Science. 2016;20:S151-S165.
doi:10.2298/TSCI150827207E .

Erić, Aleksandar, Nemoda, Stevan, Dakić, Dragoljub V., Repić, Branislav, Đurović, Dejan M., "Experimental and Numerical Study on Combustion of Baled Biomass in Cigar Burners and Effects of Flue Gas Re-Circulation" in Thermal Science, 20 (2016):S151-S165,
https://doi.org/10.2298/TSCI150827207E . .

TY  - JOUR
AU  - Erić, Aleksandar
AU  - Komatina, M.
AU  - Nemoda, Stevan
AU  - Dakić, Dragoljub V.
AU  - Repić, Branislav
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/966
AB  - Modeling of transport phenomena in materials with porous bed features requires thermophysical properties, such as porosity, permeability and thermal conductivity be known. The paper presents experimental data obtained in the course of investigation focused on analysis of stagnant thermal conductivity of biomass. Experiments were conducted using a custom designed and constructed experimental setup and implementing original experimental procedure. Results obtained enabled stagnant thermal conductivity of biomass to be determined for different biomass porosity values. Analysis of the experimental data enabled functional dependence of stagnant thermal conductivity on porosity to be determined, with porosity varied in a range 0.50-0.85. Results obtained indicate that reduced bed porosity, down to the value of 0.65, causes stagnant thermal conductivity of the bed to be reduced. Further porosity reduction, below the value of 0.65, results in increased stagnant thermal conductivity of the bed. Experimental procedure developed shall be useful for gathering experimental data on different materials planned to be analyzed when examining transport phenomena occurring during combustion of biomass bales. In addition, data to be acquired shall be helpful in modeling the transport phenomena associated with combustion in porous beds. (C) 2015 Elsevier Ltd. All rights reserved.
PB  - Elsevier
T2  - Renewable and Sustainable Energy Reviews
T1  - Determination of thermal conductivity of baled agricultural biomass
VL  - 58
SP  - 876
EP  - 884
DO  - 10.1016/j.rser.2015.12.066
ER  - 

@article{
author = "Erić, Aleksandar and Komatina, M. and Nemoda, Stevan and Dakić, Dragoljub V. and Repić, Branislav",
year = "2016",
abstract = "Modeling of transport phenomena in materials with porous bed features requires thermophysical properties, such as porosity, permeability and thermal conductivity be known. The paper presents experimental data obtained in the course of investigation focused on analysis of stagnant thermal conductivity of biomass. Experiments were conducted using a custom designed and constructed experimental setup and implementing original experimental procedure. Results obtained enabled stagnant thermal conductivity of biomass to be determined for different biomass porosity values. Analysis of the experimental data enabled functional dependence of stagnant thermal conductivity on porosity to be determined, with porosity varied in a range 0.50-0.85. Results obtained indicate that reduced bed porosity, down to the value of 0.65, causes stagnant thermal conductivity of the bed to be reduced. Further porosity reduction, below the value of 0.65, results in increased stagnant thermal conductivity of the bed. Experimental procedure developed shall be useful for gathering experimental data on different materials planned to be analyzed when examining transport phenomena occurring during combustion of biomass bales. In addition, data to be acquired shall be helpful in modeling the transport phenomena associated with combustion in porous beds. (C) 2015 Elsevier Ltd. All rights reserved.",
publisher = "Elsevier",
journal = "Renewable and Sustainable Energy Reviews",
title = "Determination of thermal conductivity of baled agricultural biomass",
volume = "58",
pages = "876-884",
doi = "10.1016/j.rser.2015.12.066"
}

Erić, A., Komatina, M., Nemoda, S., Dakić, D. V.,& Repić, B.. (2016). Determination of thermal conductivity of baled agricultural biomass. in Renewable and Sustainable Energy Reviews
Elsevier., 58, 876-884.
https://doi.org/10.1016/j.rser.2015.12.066

Erić A, Komatina M, Nemoda S, Dakić DV, Repić B. Determination of thermal conductivity of baled agricultural biomass. in Renewable and Sustainable Energy Reviews. 2016;58:876-884.
doi:10.1016/j.rser.2015.12.066 .

Erić, Aleksandar, Komatina, M., Nemoda, Stevan, Dakić, Dragoljub V., Repić, Branislav, "Determination of thermal conductivity of baled agricultural biomass" in Renewable and Sustainable Energy Reviews, 58 (2016):876-884,
https://doi.org/10.1016/j.rser.2015.12.066 . .

TY  - CONF
AU  - Đurović, Dejan
AU  - Dakić, Dragoljub
AU  - Repić, Branislav
AU  - Paprika, Milijana
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11605
AB  - Institut „Vinča“ se greje iz centralne kotlarnice toplom vodom u primarnom krugu. U kotlarnici su instalisana četiri mazutna vrelovodna blok kotla ukupne snage od 9,65 MW. To je veoma zastareo sistem grejanja koji ima niz nedostataka. Međutim, promena tog sistema i eventualno prelazak na dvostepeni (primarni i sekundarni vrelovodni/toplovodni krugovi sa ugradnjom podstanica) je veoma skup poduhvat i u ovom trenutku se ne razmatra. U radu je sagledana mogućnost supstitucije postojećeg goriva (mazut) biomasom. Za tu svrhu bi se morao izgraditi novi kotao koji će sagorevati biomasu. Analiza sprovedena u ovom radu je pokazala da li je i u kojoj meri to isplativo, ekološki prihvatlјivo, energetski efikasnije, kao i koliko je naučno istraživački korisno. U radu je prikazana i analiza angažovane snage kotlarnice za dve izabrane grejne sezone, što može pomoći u određivanju potrebne instalisane snage novog kotla na biomasu. Takođe, u radu je prikazana i kompletna logistika neophodna za realizaciju korišćenja biomase kao goriva u sistemu centralnog grejanja instituta Vinča.
AB  - "Vinca" Institute is heated from a central boiler station using a hot water in the primary circuit. In the boiler room a four heavy fuel oil hot water block boilers were installed with total capacity of 9.65 MW. It is very outdated heating system which has a number of disadvantages. However, the change of the system and eventually change to a two-stage (primary and secondary hot water/hot water circuits with installation of substations) is a very expensive proposition and at this time is not considered. In the paper is investigated the possibilities of substitution of the existing fuel (heavy fuel oil) with biomass. For this purposes a new boiler which will burn biomass would be built.The analysis conducted in this paper has shown whether and to what extent is cost-effective, environmentally friendly, energy efficient, and how is useful from scientific and research point of view. In the paper has been presented the analysis for two selected heating season, which may help in determining the installed capacity of the new biomass boiler. Also, in the paper are presented a complete logistics system required for implementation of biomass usage as a fuel in heating system of the Vinca Institute.
PB  - Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS) : Društvo za procesnu tehniku
C3  - 28. Međunarodni kongres o procesnoj industriji - PROCESING ′15 : zbornik radova
T1  - Tehnička i ekonomska opravdanost zamene postojećih kotlova na mazut novim kotlom na biomasu u okviru sistema grejanja Instituta Vinča
T1  - Technical and economic feasibilityof replacing the existing heavy fuel boilers with new biomass boiler within the heating system of the institute Vinča
SP  - 204
EP  - 213
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11605
ER  - 

@conference{
author = "Đurović, Dejan and Dakić, Dragoljub and Repić, Branislav and Paprika, Milijana",
year = "2015",
abstract = "Institut „Vinča“ se greje iz centralne kotlarnice toplom vodom u primarnom krugu. U kotlarnici su instalisana četiri mazutna vrelovodna blok kotla ukupne snage od 9,65 MW. To je veoma zastareo sistem grejanja koji ima niz nedostataka. Međutim, promena tog sistema i eventualno prelazak na dvostepeni (primarni i sekundarni vrelovodni/toplovodni krugovi sa ugradnjom podstanica) je veoma skup poduhvat i u ovom trenutku se ne razmatra. U radu je sagledana mogućnost supstitucije postojećeg goriva (mazut) biomasom. Za tu svrhu bi se morao izgraditi novi kotao koji će sagorevati biomasu. Analiza sprovedena u ovom radu je pokazala da li je i u kojoj meri to isplativo, ekološki prihvatlјivo, energetski efikasnije, kao i koliko je naučno istraživački korisno. U radu je prikazana i analiza angažovane snage kotlarnice za dve izabrane grejne sezone, što može pomoći u određivanju potrebne instalisane snage novog kotla na biomasu. Takođe, u radu je prikazana i kompletna logistika neophodna za realizaciju korišćenja biomase kao goriva u sistemu centralnog grejanja instituta Vinča., "Vinca" Institute is heated from a central boiler station using a hot water in the primary circuit. In the boiler room a four heavy fuel oil hot water block boilers were installed with total capacity of 9.65 MW. It is very outdated heating system which has a number of disadvantages. However, the change of the system and eventually change to a two-stage (primary and secondary hot water/hot water circuits with installation of substations) is a very expensive proposition and at this time is not considered. In the paper is investigated the possibilities of substitution of the existing fuel (heavy fuel oil) with biomass. For this purposes a new boiler which will burn biomass would be built.The analysis conducted in this paper has shown whether and to what extent is cost-effective, environmentally friendly, energy efficient, and how is useful from scientific and research point of view. In the paper has been presented the analysis for two selected heating season, which may help in determining the installed capacity of the new biomass boiler. Also, in the paper are presented a complete logistics system required for implementation of biomass usage as a fuel in heating system of the Vinca Institute.",
publisher = "Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS) : Društvo za procesnu tehniku",
journal = "28. Međunarodni kongres o procesnoj industriji - PROCESING ′15 : zbornik radova",
title = "Tehnička i ekonomska opravdanost zamene postojećih kotlova na mazut novim kotlom na biomasu u okviru sistema grejanja Instituta Vinča, Technical and economic feasibilityof replacing the existing heavy fuel boilers with new biomass boiler within the heating system of the institute Vinča",
pages = "204-213",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11605"
}

Đurović, D., Dakić, D., Repić, B.,& Paprika, M.. (2015). Tehnička i ekonomska opravdanost zamene postojećih kotlova na mazut novim kotlom na biomasu u okviru sistema grejanja Instituta Vinča. in 28. Međunarodni kongres o procesnoj industriji - PROCESING ′15 : zbornik radova
Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS) : Društvo za procesnu tehniku., 204-213.
https://hdl.handle.net/21.15107/rcub_vinar_11605

Đurović D, Dakić D, Repić B, Paprika M. Tehnička i ekonomska opravdanost zamene postojećih kotlova na mazut novim kotlom na biomasu u okviru sistema grejanja Instituta Vinča. in 28. Međunarodni kongres o procesnoj industriji - PROCESING ′15 : zbornik radova. 2015;:204-213.
https://hdl.handle.net/21.15107/rcub_vinar_11605 .

Đurović, Dejan, Dakić, Dragoljub, Repić, Branislav, Paprika, Milijana, "Tehnička i ekonomska opravdanost zamene postojećih kotlova na mazut novim kotlom na biomasu u okviru sistema grejanja Instituta Vinča" in 28. Međunarodni kongres o procesnoj industriji - PROCESING ′15 : zbornik radova (2015):204-213,
https://hdl.handle.net/21.15107/rcub_vinar_11605 .

TY  - CONF
AU  - Mladenović, Milica
AU  - Dakić, Dragoljub
AU  - Nemoda, Stevan
AU  - Paprika, Milijana
AU  - Repić, Branislav
AU  - Živković, Goran
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11606
AB  - Uprkos činjenici da se upotreba biomase preporučuje sa stanovišta očuvanja životne sredine, usled značajno manje emisije štetnih gasova nego pri sagorevanju uglja, kao najzastupljenijeg domaćeg fosilnog goriva, veoma je značajno praćenje emisije iz dimnih gasova i dobro razumevanje procesa koji utiču na smanjenje koncentracije polutanata. Emisija azotnih oksida (NOx) je jedan od najvećih izazova u tom pogledu. Poznavanje emisije ovih oksida prilikom sagorevanja biomase je neophono radi uspotavljanja korektnih zakonskih normi u pogledu granične emisije i za razvoj što kvalitetnijih tehnologoja za sagorevanje ove vrste goriva. U radu su date izmerene koncentracije azotnih oksida prilikom sagorevanja više vrsta biomase pri stacionarnim uslovima rada eksperimentalnih i demonstraciono - industrijskih postrojenja koja pripadaju dvema različitim tehnologijama: cigaretno sagorevanje balirane slame i sagorevanje u fluidizovanom sloju, kao i sveobuhvatna analiza složenih uticaja na emisiju NOx-a.
AB  - Emissions of nitrogen oxidesat the biomass combustion
PB  - Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS) : Društvo za procesnu tehniku
C3  - 28. Međunarodni kongres o procesnoj industriji - PROCESING ′15 : zbornik radova
T1  - Emisija azotnih oksida pri sagorevanju biomase
T1  - Emissions of nitrogen oxidesat the biomass combustion
SP  - 214
EP  - 223
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11606
ER  - 

@conference{
author = "Mladenović, Milica and Dakić, Dragoljub and Nemoda, Stevan and Paprika, Milijana and Repić, Branislav and Živković, Goran",
year = "2015",
abstract = "Uprkos činjenici da se upotreba biomase preporučuje sa stanovišta očuvanja životne sredine, usled značajno manje emisije štetnih gasova nego pri sagorevanju uglja, kao najzastupljenijeg domaćeg fosilnog goriva, veoma je značajno praćenje emisije iz dimnih gasova i dobro razumevanje procesa koji utiču na smanjenje koncentracije polutanata. Emisija azotnih oksida (NOx) je jedan od najvećih izazova u tom pogledu. Poznavanje emisije ovih oksida prilikom sagorevanja biomase je neophono radi uspotavljanja korektnih zakonskih normi u pogledu granične emisije i za razvoj što kvalitetnijih tehnologoja za sagorevanje ove vrste goriva. U radu su date izmerene koncentracije azotnih oksida prilikom sagorevanja više vrsta biomase pri stacionarnim uslovima rada eksperimentalnih i demonstraciono - industrijskih postrojenja koja pripadaju dvema različitim tehnologijama: cigaretno sagorevanje balirane slame i sagorevanje u fluidizovanom sloju, kao i sveobuhvatna analiza složenih uticaja na emisiju NOx-a., Emissions of nitrogen oxidesat the biomass combustion",
publisher = "Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS) : Društvo za procesnu tehniku",
journal = "28. Međunarodni kongres o procesnoj industriji - PROCESING ′15 : zbornik radova",
title = "Emisija azotnih oksida pri sagorevanju biomase, Emissions of nitrogen oxidesat the biomass combustion",
pages = "214-223",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11606"
}

Mladenović, M., Dakić, D., Nemoda, S., Paprika, M., Repić, B.,& Živković, G.. (2015). Emisija azotnih oksida pri sagorevanju biomase. in 28. Međunarodni kongres o procesnoj industriji - PROCESING ′15 : zbornik radova
Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS) : Društvo za procesnu tehniku., 214-223.
https://hdl.handle.net/21.15107/rcub_vinar_11606

Mladenović M, Dakić D, Nemoda S, Paprika M, Repić B, Živković G. Emisija azotnih oksida pri sagorevanju biomase. in 28. Međunarodni kongres o procesnoj industriji - PROCESING ′15 : zbornik radova. 2015;:214-223.
https://hdl.handle.net/21.15107/rcub_vinar_11606 .

Mladenović, Milica, Dakić, Dragoljub, Nemoda, Stevan, Paprika, Milijana, Repić, Branislav, Živković, Goran, "Emisija azotnih oksida pri sagorevanju biomase" in 28. Međunarodni kongres o procesnoj industriji - PROCESING ′15 : zbornik radova (2015):214-223,
https://hdl.handle.net/21.15107/rcub_vinar_11606 .

TY  - JOUR
AU  - Đurović, Dejan R.
AU  - Nemoda, Stevan
AU  - Repić, Branislav
AU  - Dakić, Dragoljub V.
AU  - Adžić, Miroljub M.
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/387
AB  - In this paper has been shown improvement of the existing furnace for biomass combustion in the way of improving energy efficiency and meeting environmental protection criteria. One of the main problems during baled biomass combustion process is high CO emission due to incomplete combustion of flue gases. By proper furnace dimensioning that problem can be avoided and also high investment costs can be reduced, since the cost of the furnace is 30-40% of total biomass plant costs. Two-dimensional turbulent flow model with homogeneous chemical reactions has been developed. Turbulent flow is considered using time averaging Navier-Stokes equations that are closed by k-epsilon turbulence model. Calculations based on the proposed models were conducted using commercial CFD package FLUENT. Accuracy of the model has been previously confirmed with experimental data obtained on the existing furnace. Comparative analysis of the results of modeling existing and proposed (improved) furnace has shown lower CO emission (more than 50% less CO emission) at the proposed furnace outlet. (C) 2014 Elsevier Ltd. All rights reserved.
T2  - Renewable Energy
T1  - Influence of biomass furnace volume change on flue gases burn out process
VL  - 76
SP  - 1
EP  - 6
DO  - 10.1016/j.renene.2014.11.007
ER  - 

@article{
author = "Đurović, Dejan R. and Nemoda, Stevan and Repić, Branislav and Dakić, Dragoljub V. and Adžić, Miroljub M.",
year = "2015",
abstract = "In this paper has been shown improvement of the existing furnace for biomass combustion in the way of improving energy efficiency and meeting environmental protection criteria. One of the main problems during baled biomass combustion process is high CO emission due to incomplete combustion of flue gases. By proper furnace dimensioning that problem can be avoided and also high investment costs can be reduced, since the cost of the furnace is 30-40% of total biomass plant costs. Two-dimensional turbulent flow model with homogeneous chemical reactions has been developed. Turbulent flow is considered using time averaging Navier-Stokes equations that are closed by k-epsilon turbulence model. Calculations based on the proposed models were conducted using commercial CFD package FLUENT. Accuracy of the model has been previously confirmed with experimental data obtained on the existing furnace. Comparative analysis of the results of modeling existing and proposed (improved) furnace has shown lower CO emission (more than 50% less CO emission) at the proposed furnace outlet. (C) 2014 Elsevier Ltd. All rights reserved.",
journal = "Renewable Energy",
title = "Influence of biomass furnace volume change on flue gases burn out process",
volume = "76",
pages = "1-6",
doi = "10.1016/j.renene.2014.11.007"
}

Đurović, D. R., Nemoda, S., Repić, B., Dakić, D. V.,& Adžić, M. M.. (2015). Influence of biomass furnace volume change on flue gases burn out process. in Renewable Energy, 76, 1-6.
https://doi.org/10.1016/j.renene.2014.11.007

Đurović DR, Nemoda S, Repić B, Dakić DV, Adžić MM. Influence of biomass furnace volume change on flue gases burn out process. in Renewable Energy. 2015;76:1-6.
doi:10.1016/j.renene.2014.11.007 .

Đurović, Dejan R., Nemoda, Stevan, Repić, Branislav, Dakić, Dragoljub V., Adžić, Miroljub M., "Influence of biomass furnace volume change on flue gases burn out process" in Renewable Energy, 76 (2015):1-6,
https://doi.org/10.1016/j.renene.2014.11.007 . .

TY  - JOUR
AU  - Nemoda, Stevan
AU  - Mladenović, Milica
AU  - Erić, Aleksandar
AU  - Paprika, Milijana
AU  - Đurović, Dejan
AU  - Repić, Branislav
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12763
AB  - U radu je predložen dvodimenzijski model numeričke simulacije sagorevanja tečnih goriva u fluidizovanom sloju, koji se zasniva na dvofluidnom Ojler-Ojler pristupu modeliranja fluidizovanog sloja, pri čemu se određivanje polja brzina gasa i čestica u dvofaznim granularnim tokovima zasniva na analogiji sa kinetičkom teorijom gasova. Sveobuhvatan model kompleksnih procesa u fluidizacionoj komori sagorevanja podrazumeva, pored određivanja polja brzina gasne i čestične faze, ugradnja energetskih jednačina gasne i čestične faze, kao i transportnih jednačina hemijskih komponenti sa izvornim članovima usled konverzije komponenata. Brojni numerički eksperimenti pokazuju da izbor koeficijenata u izrazima za sile trenja prilikom interakcije faza ima izuzetan značaj i mora se sprovesti za svaki, značajno različit režim fluidizacije, posebno. Urađene su serije numeričkih eksperimenata sa simulacijom procesa sagorevanja u fluidizovanom sloju sa i bez značajnog sadržaja vode u gorivu. Proračuni su nestacionarni, a modelirani vremenski period odgovara vremenu za koje gas prođe kroz celu visinu reaktora. Izloženi numerički eksperimenti su prvenstveno primenjeni za potvrdu pretpostavke koja se odnosi na uticaj sadržaja vlage u grivu na kinetiku reakcija u fluidizovanom ložištu.
AB  - A comprehensive 2D numerical model of the bubbled fluidized bed with combustion of liquid fuelsis proposed in the paper. The proposed numerical model is based on the Eulerian–Eulerian granular flow modeling with the kinetic theory of granular flow. The model includes the following basic governing equations: the continuity equations of the solid andgas phase, the momentum conservation equations of the gas and solid phase, the energy equations of gas, and the solid phase and conservation equations for chemical components. The choice of the semi empirical constants of the inter-phase interaction drag force model is significant and these constants must be adjusted for each particular regime of fluidiza-tion. Presented numerical experiments primarily were applied to verification of the assumptions about the impact of water content in a liquid fuel on FB combustion intensity. The numerical experiments, based on the proposed mathematical model, also have been used for the purposes of analyzing the im-pacts of various reactor powers as well as fluidization numbers, on the combustion efficiency and on combustion zone temperature fields
T2  - Termotehnika
T1  - CFD numerička simulacija fluidizacione komore sagorevanja bazirane na Ojler-Ojler granularnom modelu
T1  - Fluidized Combustion Chamber CFD Simulation Based on Euler-Euler Granular Flow Model
VL  - 40
IS  - 1-2
SP  - 19
EP  - 33
DO  - 10.5937/termoteh1402019N
ER  - 

@article{
author = "Nemoda, Stevan and Mladenović, Milica and Erić, Aleksandar and Paprika, Milijana and Đurović, Dejan and Repić, Branislav",
year = "2014",
abstract = "U radu je predložen dvodimenzijski model numeričke simulacije sagorevanja tečnih goriva u fluidizovanom sloju, koji se zasniva na dvofluidnom Ojler-Ojler pristupu modeliranja fluidizovanog sloja, pri čemu se određivanje polja brzina gasa i čestica u dvofaznim granularnim tokovima zasniva na analogiji sa kinetičkom teorijom gasova. Sveobuhvatan model kompleksnih procesa u fluidizacionoj komori sagorevanja podrazumeva, pored određivanja polja brzina gasne i čestične faze, ugradnja energetskih jednačina gasne i čestične faze, kao i transportnih jednačina hemijskih komponenti sa izvornim članovima usled konverzije komponenata. Brojni numerički eksperimenti pokazuju da izbor koeficijenata u izrazima za sile trenja prilikom interakcije faza ima izuzetan značaj i mora se sprovesti za svaki, značajno različit režim fluidizacije, posebno. Urađene su serije numeričkih eksperimenata sa simulacijom procesa sagorevanja u fluidizovanom sloju sa i bez značajnog sadržaja vode u gorivu. Proračuni su nestacionarni, a modelirani vremenski period odgovara vremenu za koje gas prođe kroz celu visinu reaktora. Izloženi numerički eksperimenti su prvenstveno primenjeni za potvrdu pretpostavke koja se odnosi na uticaj sadržaja vlage u grivu na kinetiku reakcija u fluidizovanom ložištu., A comprehensive 2D numerical model of the bubbled fluidized bed with combustion of liquid fuelsis proposed in the paper. The proposed numerical model is based on the Eulerian–Eulerian granular flow modeling with the kinetic theory of granular flow. The model includes the following basic governing equations: the continuity equations of the solid andgas phase, the momentum conservation equations of the gas and solid phase, the energy equations of gas, and the solid phase and conservation equations for chemical components. The choice of the semi empirical constants of the inter-phase interaction drag force model is significant and these constants must be adjusted for each particular regime of fluidiza-tion. Presented numerical experiments primarily were applied to verification of the assumptions about the impact of water content in a liquid fuel on FB combustion intensity. The numerical experiments, based on the proposed mathematical model, also have been used for the purposes of analyzing the im-pacts of various reactor powers as well as fluidization numbers, on the combustion efficiency and on combustion zone temperature fields",
journal = "Termotehnika",
title = "CFD numerička simulacija fluidizacione komore sagorevanja bazirane na Ojler-Ojler granularnom modelu, Fluidized Combustion Chamber CFD Simulation Based on Euler-Euler Granular Flow Model",
volume = "40",
number = "1-2",
pages = "19-33",
doi = "10.5937/termoteh1402019N"
}

Nemoda, S., Mladenović, M., Erić, A., Paprika, M., Đurović, D.,& Repić, B.. (2014). CFD numerička simulacija fluidizacione komore sagorevanja bazirane na Ojler-Ojler granularnom modelu. in Termotehnika, 40(1-2), 19-33.
https://doi.org/10.5937/termoteh1402019N

Nemoda S, Mladenović M, Erić A, Paprika M, Đurović D, Repić B. CFD numerička simulacija fluidizacione komore sagorevanja bazirane na Ojler-Ojler granularnom modelu. in Termotehnika. 2014;40(1-2):19-33.
doi:10.5937/termoteh1402019N .

Nemoda, Stevan, Mladenović, Milica, Erić, Aleksandar, Paprika, Milijana, Đurović, Dejan, Repić, Branislav, "CFD numerička simulacija fluidizacione komore sagorevanja bazirane na Ojler-Ojler granularnom modelu" in Termotehnika, 40, no. 1-2 (2014):19-33,
https://doi.org/10.5937/termoteh1402019N . .

TY  - CONF
AU  - Paprika, Milijana
AU  - Repić, Branislav
AU  - Dakić, Dragoljub
AU  - Mladenović, Milica
AU  - Erić, Aleksandar
AU  - Đurović, Dejan
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11607
AB  - Održivi razvoj podrazumeva sve veću potrebu za korišćenjem obnovljivih izvora energije, a biomasa predstavlja jedan najvećih potencijala ove vrste u Srbiji. U Laboratoriji za termotehniku i energetiku Instituta „Vinča“ razvijena je tehnologija cigaretnog sagorevanja balirane poljoprivredne biomase, a na osnovu nje izgrađen industrijski kotao toplotne snage 1,5 MW u okviru korporacije PKB Beograd za zagrevanje 1 ha plastenika. Gorivo su velike četvrtaste bale dimenzija 2,0x1,2x0,7 m, težine 200-250 kg. Konstrukcija i primenjena tehnologija sagorevanja rezultirali su kotlom približnih karakteristika kao što su kotlovi sličnih snaga koji koriste tečna ili gasovita goriva. Zbog toga ovaj kotao mora imati savremeni sistem regulacije snage. Za određenu snagu postrojenja sistem za automatsko upravljanje kotla treba da obezbedi kontinualno doziranje goriva, uz prateće promene vazduha za sagorevanje, odnosa primarnog i sekundarnog vazduha i protoka dimnog gasa. Mikroprocesorski računar upravlja snagom postrojenja, pri čemu se u isto vreme vrši kontinualno merenje i prikupljanje neophodnih podataka za periodične analize rada postrojenja. U radu su prikazani osnovni principi razvijenog upravljačkog sistema kotla od 1,5 MW na biomasu, kao i praktični rezultati primene ovog sistema.
PB  - Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS) : Društvo za procesnu tehniku
C3  - 27. Međunarodni kongres o procesnoj industriji - PROCESING ′14 : zbornik radova
T1  - Osnovi sistema za automatsko upravljanje industrijskog kotla na biomasu
T1  - Fundamentals of automatic control system of an industrial biomass boiler
SP  - 1
EP  - 5
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11607
ER  - 

@conference{
author = "Paprika, Milijana and Repić, Branislav and Dakić, Dragoljub and Mladenović, Milica and Erić, Aleksandar and Đurović, Dejan",
year = "2014",
abstract = "Održivi razvoj podrazumeva sve veću potrebu za korišćenjem obnovljivih izvora energije, a biomasa predstavlja jedan najvećih potencijala ove vrste u Srbiji. U Laboratoriji za termotehniku i energetiku Instituta „Vinča“ razvijena je tehnologija cigaretnog sagorevanja balirane poljoprivredne biomase, a na osnovu nje izgrađen industrijski kotao toplotne snage 1,5 MW u okviru korporacije PKB Beograd za zagrevanje 1 ha plastenika. Gorivo su velike četvrtaste bale dimenzija 2,0x1,2x0,7 m, težine 200-250 kg. Konstrukcija i primenjena tehnologija sagorevanja rezultirali su kotlom približnih karakteristika kao što su kotlovi sličnih snaga koji koriste tečna ili gasovita goriva. Zbog toga ovaj kotao mora imati savremeni sistem regulacije snage. Za određenu snagu postrojenja sistem za automatsko upravljanje kotla treba da obezbedi kontinualno doziranje goriva, uz prateće promene vazduha za sagorevanje, odnosa primarnog i sekundarnog vazduha i protoka dimnog gasa. Mikroprocesorski računar upravlja snagom postrojenja, pri čemu se u isto vreme vrši kontinualno merenje i prikupljanje neophodnih podataka za periodične analize rada postrojenja. U radu su prikazani osnovni principi razvijenog upravljačkog sistema kotla od 1,5 MW na biomasu, kao i praktični rezultati primene ovog sistema.",
publisher = "Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS) : Društvo za procesnu tehniku",
journal = "27. Međunarodni kongres o procesnoj industriji - PROCESING ′14 : zbornik radova",
title = "Osnovi sistema za automatsko upravljanje industrijskog kotla na biomasu, Fundamentals of automatic control system of an industrial biomass boiler",
pages = "1-5",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11607"
}

Paprika, M., Repić, B., Dakić, D., Mladenović, M., Erić, A.,& Đurović, D.. (2014). Osnovi sistema za automatsko upravljanje industrijskog kotla na biomasu. in 27. Međunarodni kongres o procesnoj industriji - PROCESING ′14 : zbornik radova
Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS) : Društvo za procesnu tehniku., 1-5.
https://hdl.handle.net/21.15107/rcub_vinar_11607

Paprika M, Repić B, Dakić D, Mladenović M, Erić A, Đurović D. Osnovi sistema za automatsko upravljanje industrijskog kotla na biomasu. in 27. Međunarodni kongres o procesnoj industriji - PROCESING ′14 : zbornik radova. 2014;:1-5.
https://hdl.handle.net/21.15107/rcub_vinar_11607 .

Paprika, Milijana, Repić, Branislav, Dakić, Dragoljub, Mladenović, Milica, Erić, Aleksandar, Đurović, Dejan, "Osnovi sistema za automatsko upravljanje industrijskog kotla na biomasu" in 27. Međunarodni kongres o procesnoj industriji - PROCESING ′14 : zbornik radova (2014):1-5,
https://hdl.handle.net/21.15107/rcub_vinar_11607 .

TY  - CONF
AU  - Mladenović, Milica
AU  - Dakić, Dragoljub
AU  - Nemoda, Stevan
AU  - Paprika, Milijana
AU  - Erić, Aleksandar
AU  - Repić, Branislav
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11608
AB  - Savremeno društvo i industrija, gde su sekundarni proizvodi neminovnost, je sve veći generator otpada najrazličitije prirode. U mnogim slučajevima ove materije se ne mogu reciklirati, pa je pitanje njihovog daljeg tretmana/deponovanja, zajedno sa pitanjem zaštite ljudskog zdravlja i životne sredine sve aktuelnije. Održivo upravljanje otpadom doprinosi smanjenju njegove generacije i iscrpljivanja prirodnih resursa (materijalnih i energetskih) i obuhvata metode koje spadaju u kategoriju "obnovljivih izvora". Materijalna i energetska iskorišćenost otpada je poželjnija opcija naspram konačnog odlaganja otpada. Jedan od načina za istovremeno ispunjavanje i održivosti domaće energetike je energetsko iskorišćenje ovih nekonvencionalnih, otpadnih goriva, primenom tehnologije sagorevanja u fluidizovanom sloju (FS). U radu su prikazani rezultati ispitivanja sagorevanja više vrsta čvrstih i tečnih otpadnih materija, obavljeni na industrijsko-demonstracionom FS kotlu. Određivano je temperatursko polje po visini ložišta, analiziran sastav dimnih gasova na izlazu iz ložišta i ostali parametri sagorevanja predmetnih goriva. Analizom dobijenih rezultata data je ocena njihove podobnosti sagorevanja u FS uz mogućnost iskorišćenja njihovog energetskog potencijala.
AB  - Modern society and industry, where secondary products are inevitable, are the ever increasing generators of the most different types of waste. In many cases, these substances may not be recycled and, therefore, the question of their treatment/disposal and the question of the health and environment protection are increasingly topical issues. The sustainable waste management contributes to the reduction of waste generation and depletion of natural resources (material and energy resources) and comprises the methods that are included in the category of „renewable sources“. Material and energy utilization of waste is a more favourable option in comparison to the definite (final) waste disposal. One of the ways to meet demands and, at the same time, to provide sustainability of the domestic energy sector is the energy utilization of these unconventional, waste fuels, by using the technology of fluidized bed combustion. This paper includes the results of testing the combustion of several types of solid and liquid waste substances, performed on the industrial-demo boiler with a fluidized bed. The temperature field was determined according to the firing height, the composition of flue gases was analyzed at the firing outlet and other parameters of combustion of the fuels concerned were also analyzed. By the analysis of obtained results, an assessment was given to show their suitability for combustion in a fluidized bed with a possibility to use their energy potential.
PB  - Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS) : Društvo za procesnu tehniku
C3  - 27. Međunarodni kongres o procesnoj industriji - PROCESING ′14 : zbornik radova
T1  - Tehnologija korišćenja različitih otpadnih goriva sagorevanjem u fluidizovanom sloju
T1  - Technology of use of various waste fuels  for fluidized bed combustion
SP  - 1
EP  - 7
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11608
ER  - 

@conference{
author = "Mladenović, Milica and Dakić, Dragoljub and Nemoda, Stevan and Paprika, Milijana and Erić, Aleksandar and Repić, Branislav",
year = "2014",
abstract = "Savremeno društvo i industrija, gde su sekundarni proizvodi neminovnost, je sve veći generator otpada najrazličitije prirode. U mnogim slučajevima ove materije se ne mogu reciklirati, pa je pitanje njihovog daljeg tretmana/deponovanja, zajedno sa pitanjem zaštite ljudskog zdravlja i životne sredine sve aktuelnije. Održivo upravljanje otpadom doprinosi smanjenju njegove generacije i iscrpljivanja prirodnih resursa (materijalnih i energetskih) i obuhvata metode koje spadaju u kategoriju "obnovljivih izvora". Materijalna i energetska iskorišćenost otpada je poželjnija opcija naspram konačnog odlaganja otpada. Jedan od načina za istovremeno ispunjavanje i održivosti domaće energetike je energetsko iskorišćenje ovih nekonvencionalnih, otpadnih goriva, primenom tehnologije sagorevanja u fluidizovanom sloju (FS). U radu su prikazani rezultati ispitivanja sagorevanja više vrsta čvrstih i tečnih otpadnih materija, obavljeni na industrijsko-demonstracionom FS kotlu. Određivano je temperatursko polje po visini ložišta, analiziran sastav dimnih gasova na izlazu iz ložišta i ostali parametri sagorevanja predmetnih goriva. Analizom dobijenih rezultata data je ocena njihove podobnosti sagorevanja u FS uz mogućnost iskorišćenja njihovog energetskog potencijala., Modern society and industry, where secondary products are inevitable, are the ever increasing generators of the most different types of waste. In many cases, these substances may not be recycled and, therefore, the question of their treatment/disposal and the question of the health and environment protection are increasingly topical issues. The sustainable waste management contributes to the reduction of waste generation and depletion of natural resources (material and energy resources) and comprises the methods that are included in the category of „renewable sources“. Material and energy utilization of waste is a more favourable option in comparison to the definite (final) waste disposal. One of the ways to meet demands and, at the same time, to provide sustainability of the domestic energy sector is the energy utilization of these unconventional, waste fuels, by using the technology of fluidized bed combustion. This paper includes the results of testing the combustion of several types of solid and liquid waste substances, performed on the industrial-demo boiler with a fluidized bed. The temperature field was determined according to the firing height, the composition of flue gases was analyzed at the firing outlet and other parameters of combustion of the fuels concerned were also analyzed. By the analysis of obtained results, an assessment was given to show their suitability for combustion in a fluidized bed with a possibility to use their energy potential.",
publisher = "Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS) : Društvo za procesnu tehniku",
journal = "27. Međunarodni kongres o procesnoj industriji - PROCESING ′14 : zbornik radova",
title = "Tehnologija korišćenja različitih otpadnih goriva sagorevanjem u fluidizovanom sloju, Technology of use of various waste fuels  for fluidized bed combustion",
pages = "1-7",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11608"
}

Mladenović, M., Dakić, D., Nemoda, S., Paprika, M., Erić, A.,& Repić, B.. (2014). Tehnologija korišćenja različitih otpadnih goriva sagorevanjem u fluidizovanom sloju. in 27. Međunarodni kongres o procesnoj industriji - PROCESING ′14 : zbornik radova
Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS) : Društvo za procesnu tehniku., 1-7.
https://hdl.handle.net/21.15107/rcub_vinar_11608

Mladenović M, Dakić D, Nemoda S, Paprika M, Erić A, Repić B. Tehnologija korišćenja različitih otpadnih goriva sagorevanjem u fluidizovanom sloju. in 27. Međunarodni kongres o procesnoj industriji - PROCESING ′14 : zbornik radova. 2014;:1-7.
https://hdl.handle.net/21.15107/rcub_vinar_11608 .

Mladenović, Milica, Dakić, Dragoljub, Nemoda, Stevan, Paprika, Milijana, Erić, Aleksandar, Repić, Branislav, "Tehnologija korišćenja različitih otpadnih goriva sagorevanjem u fluidizovanom sloju" in 27. Međunarodni kongres o procesnoj industriji - PROCESING ′14 : zbornik radova (2014):1-7,
https://hdl.handle.net/21.15107/rcub_vinar_11608 .

TY  - CONF
AU  - Repić, Branislav
AU  - Dakić, Dragoljub
AU  - Đurović, Dejan
AU  - Erić, Aleksandar
AU  - Mladenović, Milica
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11609
AB  - Za sagorevanje biomase iz poljoprivredne proizvodnje moguće je koristiti više tehnologija. Jedna od njih, koja je u potpunosti razvijena kod nas, je cigaretno sagorevanje celih bala biomase. Za uspešno sagorevanje biomase u obliku bala neophodno je njihovo kontinualno i automatsko doziranje. U radu je prikazan razvijen uređaj za doziranje koji obezbeđuje kontinualno, kontrolisano i potpuno sagorevanje balirane biomase iz poljoprivredne proizvodnje. Biomasa je u formi malih bala koje su paralelopipednog oblika dimenzija 40x50x80 cm. Pod malim balama podrazumevaju se one sa kojima se, zbog njihove težine od 12-15 kg uglavnom ručno manipuliše, što znači da se ne zahteva mehanizovano upravljanje balama. Kontinualno doziranje biomase ostvaruje se uvođenjem bala biomase iz spremišta bala, u koji se može smestiti više bala biomase poređanih jedna iznad druge, u uvodni kanal korišćenjem klip cilindara koji služe za držanje bala, i daljim kontinualnim doziranjem bala u ložište kotla korišćenjem zupčaste letve koja se pokreće uz pomoć elektromotora. Proizvedena toplota od sagorevanja biomase odvodi se do korisnika ili se skladišti u odgovarajućem akumulatoru toplote.
AB  - For burning of biomass obtained from agricultural production it is possible to use several technologies. One of them, fully developed in this country, isa cigarette burning of whole biomass bales. For successful burning of biomass in the form of bales, it is necessary to ensure their continuous and automatic dosing. The paper includes a presentation of a dosing unit or device that enables continuous, controlled and full burning of baled biomass from agricultural production. Biomass is in the form of small bales of parallelepiped shape, having the following dimensions: 40x50x80 cm. Small bales are those that are handled manually, due to their weight rangingfrom 12 to 15 kg, which means that there is no requirement for mechanized control of bales. Continuous dosing of biomass is obtained by feeding biomass bales from the storage (biomass yard), in which it is possible to put several biomass bales one above the other, into the introduction channel by using piston cylinders that serve for bale holding, and by further continuous dosing of bales to the firing of the boiler by using the gear batten that is driven by an electromotor. Heat produced from biomass burning may be delivered to users or may be stored in the appropriate heat storage.
PB  - Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS) : Društvo za procesnu tehniku
C3  - 27. Međunarodni kongres o procesnoj industriji - PROCESING ′14 : zbornik radova
T1  - Razvoj sistema za kontinualno uvođenje malih bala kod kotlova koji koriste baliranu biomasu
T1  - Development of small bale feeding system for continuous introduction at boilers using baled biomass
SP  - 1
EP  - 7
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11609
ER  - 

@conference{
author = "Repić, Branislav and Dakić, Dragoljub and Đurović, Dejan and Erić, Aleksandar and Mladenović, Milica",
year = "2014",
abstract = "Za sagorevanje biomase iz poljoprivredne proizvodnje moguće je koristiti više tehnologija. Jedna od njih, koja je u potpunosti razvijena kod nas, je cigaretno sagorevanje celih bala biomase. Za uspešno sagorevanje biomase u obliku bala neophodno je njihovo kontinualno i automatsko doziranje. U radu je prikazan razvijen uređaj za doziranje koji obezbeđuje kontinualno, kontrolisano i potpuno sagorevanje balirane biomase iz poljoprivredne proizvodnje. Biomasa je u formi malih bala koje su paralelopipednog oblika dimenzija 40x50x80 cm. Pod malim balama podrazumevaju se one sa kojima se, zbog njihove težine od 12-15 kg uglavnom ručno manipuliše, što znači da se ne zahteva mehanizovano upravljanje balama. Kontinualno doziranje biomase ostvaruje se uvođenjem bala biomase iz spremišta bala, u koji se može smestiti više bala biomase poređanih jedna iznad druge, u uvodni kanal korišćenjem klip cilindara koji služe za držanje bala, i daljim kontinualnim doziranjem bala u ložište kotla korišćenjem zupčaste letve koja se pokreće uz pomoć elektromotora. Proizvedena toplota od sagorevanja biomase odvodi se do korisnika ili se skladišti u odgovarajućem akumulatoru toplote., For burning of biomass obtained from agricultural production it is possible to use several technologies. One of them, fully developed in this country, isa cigarette burning of whole biomass bales. For successful burning of biomass in the form of bales, it is necessary to ensure their continuous and automatic dosing. The paper includes a presentation of a dosing unit or device that enables continuous, controlled and full burning of baled biomass from agricultural production. Biomass is in the form of small bales of parallelepiped shape, having the following dimensions: 40x50x80 cm. Small bales are those that are handled manually, due to their weight rangingfrom 12 to 15 kg, which means that there is no requirement for mechanized control of bales. Continuous dosing of biomass is obtained by feeding biomass bales from the storage (biomass yard), in which it is possible to put several biomass bales one above the other, into the introduction channel by using piston cylinders that serve for bale holding, and by further continuous dosing of bales to the firing of the boiler by using the gear batten that is driven by an electromotor. Heat produced from biomass burning may be delivered to users or may be stored in the appropriate heat storage.",
publisher = "Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS) : Društvo za procesnu tehniku",
journal = "27. Međunarodni kongres o procesnoj industriji - PROCESING ′14 : zbornik radova",
title = "Razvoj sistema za kontinualno uvođenje malih bala kod kotlova koji koriste baliranu biomasu, Development of small bale feeding system for continuous introduction at boilers using baled biomass",
pages = "1-7",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11609"
}

Repić, B., Dakić, D., Đurović, D., Erić, A.,& Mladenović, M.. (2014). Razvoj sistema za kontinualno uvođenje malih bala kod kotlova koji koriste baliranu biomasu. in 27. Međunarodni kongres o procesnoj industriji - PROCESING ′14 : zbornik radova
Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS) : Društvo za procesnu tehniku., 1-7.
https://hdl.handle.net/21.15107/rcub_vinar_11609

Repić B, Dakić D, Đurović D, Erić A, Mladenović M. Razvoj sistema za kontinualno uvođenje malih bala kod kotlova koji koriste baliranu biomasu. in 27. Međunarodni kongres o procesnoj industriji - PROCESING ′14 : zbornik radova. 2014;:1-7.
https://hdl.handle.net/21.15107/rcub_vinar_11609 .

Repić, Branislav, Dakić, Dragoljub, Đurović, Dejan, Erić, Aleksandar, Mladenović, Milica, "Razvoj sistema za kontinualno uvođenje malih bala kod kotlova koji koriste baliranu biomasu" in 27. Međunarodni kongres o procesnoj industriji - PROCESING ′14 : zbornik radova (2014):1-7,
https://hdl.handle.net/21.15107/rcub_vinar_11609 .

TY  - JOUR
AU  - Repić, Branislav
AU  - Dakić, Dragoljub V.
AU  - Erić, Aleksandar
AU  - Đurović, Dejan M.
AU  - Marinković, Ana D.
AU  - Nemoda, Stevan
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5857
AB  - Biomass is deemed to be the main source of renewable energy in Serbia. Over the past couple of years, considerable efforts have been made to develop a technology which would enable biomass bales of various sizes and shapes to be used for energy production. A hot water boiler with cigarette type of combustion was constructed and used in the experimental investigation of biomass combustion phenomena. During the experiments performed, numerous parameters were measured: flue gas temperature, water temperature at the boiler inlet and outlet, while O-2, CO2, CO, SO2, and NOx content in the flue gas was measured at the boiler outlet. Experiments were performed with biomass feed rate of 0.12 kg/s, mean boiler output of 1.56 MW and mean excess air coefficient of 2.1. During the steady state boiler operation, exhaust gas temperature was measured to be around 150-160 degrees C and obtained CO and NOx emission rates were found to be quite acceptable. In addition, combustion of biomass bales in cigar burners was modelled by the means of appropriate numerical simulation. A good agreement between experimental and numerical results was obtained. (C) 2013 Elsevier Ltd. All rights reserved.
T2  - Biomass and Bioenergy
T1  - Investigation of the cigar burner combustion system for baled biomass
VL  - 58
SP  - 10
EP  - 19
DO  - 10.1016/j.biombioe.2013.10.016
ER  - 

@article{
author = "Repić, Branislav and Dakić, Dragoljub V. and Erić, Aleksandar and Đurović, Dejan M. and Marinković, Ana D. and Nemoda, Stevan",
year = "2013",
abstract = "Biomass is deemed to be the main source of renewable energy in Serbia. Over the past couple of years, considerable efforts have been made to develop a technology which would enable biomass bales of various sizes and shapes to be used for energy production. A hot water boiler with cigarette type of combustion was constructed and used in the experimental investigation of biomass combustion phenomena. During the experiments performed, numerous parameters were measured: flue gas temperature, water temperature at the boiler inlet and outlet, while O-2, CO2, CO, SO2, and NOx content in the flue gas was measured at the boiler outlet. Experiments were performed with biomass feed rate of 0.12 kg/s, mean boiler output of 1.56 MW and mean excess air coefficient of 2.1. During the steady state boiler operation, exhaust gas temperature was measured to be around 150-160 degrees C and obtained CO and NOx emission rates were found to be quite acceptable. In addition, combustion of biomass bales in cigar burners was modelled by the means of appropriate numerical simulation. A good agreement between experimental and numerical results was obtained. (C) 2013 Elsevier Ltd. All rights reserved.",
journal = "Biomass and Bioenergy",
title = "Investigation of the cigar burner combustion system for baled biomass",
volume = "58",
pages = "10-19",
doi = "10.1016/j.biombioe.2013.10.016"
}

Repić, B., Dakić, D. V., Erić, A., Đurović, D. M., Marinković, A. D.,& Nemoda, S.. (2013). Investigation of the cigar burner combustion system for baled biomass. in Biomass and Bioenergy, 58, 10-19.
https://doi.org/10.1016/j.biombioe.2013.10.016

Repić B, Dakić DV, Erić A, Đurović DM, Marinković AD, Nemoda S. Investigation of the cigar burner combustion system for baled biomass. in Biomass and Bioenergy. 2013;58:10-19.
doi:10.1016/j.biombioe.2013.10.016 .

Repić, Branislav, Dakić, Dragoljub V., Erić, Aleksandar, Đurović, Dejan M., Marinković, Ana D., Nemoda, Stevan, "Investigation of the cigar burner combustion system for baled biomass" in Biomass and Bioenergy, 58 (2013):10-19,
https://doi.org/10.1016/j.biombioe.2013.10.016 . .

TY  - CONF
AU  - Mladenović, Milica
AU  - Dakić, Dragoljub
AU  - Nemoda, Stevan
AU  - Erić, Aleksandar
AU  - Paprika, Milijana
AU  - Đurović, Dejan
AU  - Repić, Branislav
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11610
AB  - Među definisanim ciljevima održivog razvoja energetike Srbije nalaze se: poboljšanje energetske efikasnosti, sigurnost i stabilnost snabdevanja energijom, korišćenje obnovljivih izvora energije, upravljanje otpadom i smanjenje zagađenja životne sredine. Jedan od načina za istovremeno ispunjavanje ovih ciljeva je i korišćenje nekonvencionalnih, alternativnih goriva poput papirnog mulja - otpada iz prerade reciklažnog papira, uz primenu tehnologije sagorevanja u fluidizovanom sloju koja omogućava zadovoljenje ekoloških normi. U radu su prikazani rezultati eksperimenata sagorevanja papirnog mulja (otpad iz proizvodnje papira u fabrici hartije UMKA), koji su obavljeni na industrijskom demonstracionoeksperimentalnom kotlu za sagorevanje nekonvencionalnih čvrstih i tečnih goriva, odnosno otpadnih industrijskih materija, u fluidizacionom ložištu. Merenja obuhvataju temperatursko polje po visini ložišta, analizu sastava dimnih gasova na izlazu iz ložišta kao i ostale parametre sagorevanja predmetnog goriva u fluidizovanom sloju. Na osnovu dobijenih rezultata data je ocena podobnosti sagorevanja papirnog mulja u toplovodnom kotlu sa fluidizovanim slojem i mogućnost iskorišćenja njegovog energetskog potencijala.
AB  - Among thedefined objectives of theSustainableEnergy Developmentof  Serbiaare:  improving energy  efficiency,  reliabiltyand  stabilityoffuelsupply,use  of renewableenergy, waste management andpollution abatement. A way for  simultaneouslyfulfillthe seria ofthesegoals isthe use ofunconventional, alternative fuelssuch as papersludge - waste from the recycledpaper processing, with use ofthe  technologyof fluidized bed combustion, which allowsmeetingenvironmental standards.This paper presentsexperimental resultsof papersludgecombustion(wastefrompaper productionin the factorystockUMKA), which were carried outon an industrialdemonstrationaland experimentalboilerused for  combustionof non-conventionalsolid and liquidfuels,andindustrial wastematerial in fluidizedbed.Based on  these  results,  an  assessment  of the suitabilityof  papersludge  combustionin hot  water boilerswithfluidized bedandthe possibility of usingits energypotentials is given.
PB  - Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS) : Društvo za procesnu tehniku
C3  - 26. Međunarodni kongres o procesnoj industriji - PROCESING ′13 : zbornik radova
T1  - Ispitivanje podobnosti sagorevanja papirnog mulja u toplovodnom kotlu sa fluidizovanim slojem
T1  - Examination of suitability of paper sludge combustion in hot-water fluidized bed boiler
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11610
ER  - 

@conference{
author = "Mladenović, Milica and Dakić, Dragoljub and Nemoda, Stevan and Erić, Aleksandar and Paprika, Milijana and Đurović, Dejan and Repić, Branislav",
year = "2013",
abstract = "Među definisanim ciljevima održivog razvoja energetike Srbije nalaze se: poboljšanje energetske efikasnosti, sigurnost i stabilnost snabdevanja energijom, korišćenje obnovljivih izvora energije, upravljanje otpadom i smanjenje zagađenja životne sredine. Jedan od načina za istovremeno ispunjavanje ovih ciljeva je i korišćenje nekonvencionalnih, alternativnih goriva poput papirnog mulja - otpada iz prerade reciklažnog papira, uz primenu tehnologije sagorevanja u fluidizovanom sloju koja omogućava zadovoljenje ekoloških normi. U radu su prikazani rezultati eksperimenata sagorevanja papirnog mulja (otpad iz proizvodnje papira u fabrici hartije UMKA), koji su obavljeni na industrijskom demonstracionoeksperimentalnom kotlu za sagorevanje nekonvencionalnih čvrstih i tečnih goriva, odnosno otpadnih industrijskih materija, u fluidizacionom ložištu. Merenja obuhvataju temperatursko polje po visini ložišta, analizu sastava dimnih gasova na izlazu iz ložišta kao i ostale parametre sagorevanja predmetnog goriva u fluidizovanom sloju. Na osnovu dobijenih rezultata data je ocena podobnosti sagorevanja papirnog mulja u toplovodnom kotlu sa fluidizovanim slojem i mogućnost iskorišćenja njegovog energetskog potencijala., Among thedefined objectives of theSustainableEnergy Developmentof  Serbiaare:  improving energy  efficiency,  reliabiltyand  stabilityoffuelsupply,use  of renewableenergy, waste management andpollution abatement. A way for  simultaneouslyfulfillthe seria ofthesegoals isthe use ofunconventional, alternative fuelssuch as papersludge - waste from the recycledpaper processing, with use ofthe  technologyof fluidized bed combustion, which allowsmeetingenvironmental standards.This paper presentsexperimental resultsof papersludgecombustion(wastefrompaper productionin the factorystockUMKA), which were carried outon an industrialdemonstrationaland experimentalboilerused for  combustionof non-conventionalsolid and liquidfuels,andindustrial wastematerial in fluidizedbed.Based on  these  results,  an  assessment  of the suitabilityof  papersludge  combustionin hot  water boilerswithfluidized bedandthe possibility of usingits energypotentials is given.",
publisher = "Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS) : Društvo za procesnu tehniku",
journal = "26. Međunarodni kongres o procesnoj industriji - PROCESING ′13 : zbornik radova",
title = "Ispitivanje podobnosti sagorevanja papirnog mulja u toplovodnom kotlu sa fluidizovanim slojem, Examination of suitability of paper sludge combustion in hot-water fluidized bed boiler",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11610"
}

Mladenović, M., Dakić, D., Nemoda, S., Erić, A., Paprika, M., Đurović, D.,& Repić, B.. (2013). Ispitivanje podobnosti sagorevanja papirnog mulja u toplovodnom kotlu sa fluidizovanim slojem. in 26. Međunarodni kongres o procesnoj industriji - PROCESING ′13 : zbornik radova
Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS) : Društvo za procesnu tehniku..
https://hdl.handle.net/21.15107/rcub_vinar_11610

Mladenović M, Dakić D, Nemoda S, Erić A, Paprika M, Đurović D, Repić B. Ispitivanje podobnosti sagorevanja papirnog mulja u toplovodnom kotlu sa fluidizovanim slojem. in 26. Međunarodni kongres o procesnoj industriji - PROCESING ′13 : zbornik radova. 2013;.
https://hdl.handle.net/21.15107/rcub_vinar_11610 .

Mladenović, Milica, Dakić, Dragoljub, Nemoda, Stevan, Erić, Aleksandar, Paprika, Milijana, Đurović, Dejan, Repić, Branislav, "Ispitivanje podobnosti sagorevanja papirnog mulja u toplovodnom kotlu sa fluidizovanim slojem" in 26. Međunarodni kongres o procesnoj industriji - PROCESING ′13 : zbornik radova (2013),
https://hdl.handle.net/21.15107/rcub_vinar_11610 .

TY  - CONF
AU  - Živković, Goran
AU  - Rudonja, Nedžad
AU  - Repić, Branislav
AU  - Dakić, Dragoljub
AU  - Komatina, Mirko
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11611
AB  - Korišćenje akumulatora toplote na postrojenjima koja koriste obnovljive izvore energije (biomasu) predstavlja dobar način da se poveća njihova energetska efikasnost. Glavni razlog ugradnje akumulatora toplote je taj što je opterećenje kotlova na biomasu retko kada konstantno, jer se menja tokom dana i tokom godine, zavisno od uslova korišćenja kotla. U radu su prikazani rezultati razvoja akumulatora toplote kod kojih se materijal za akumulaciju topi na atmosferskom pritisku, omogućavajući na taj način korišćenje energije faznog prelaza za skladištenje energije dobijene sagorevanjem biomase. Akumulatori toplote ovog tipa omogućavaju veću količinu akumulirane toplote po jedinici zapremine, a takođe, u zavisnosti od radnog medijuma, omogućavaju dostizanje viših temperatura radnog medijuma, što je neophodan uslov kod postrojenja sa kogeneracijom. U svrhu eksperimentalnog ispitivanja strujnih i termičkih procesa u akumulatoru toplote konstruisan je i izrađen prototip takvog akumulatora toplote. On je cilindričnog oblika, zapremine 77 dm3. Radni material se greje električnim grejačem snage 2,4 kW, a hladi se vazduhom. Kao radni medijum korišćen je parafin. Merenja su vršena kako u nestacionarnom tako i u stacionarnom režimu rada. Dobijena je obimna baza eksperimentalnih podataka, koji će se koristiti u numeričkom istraživanju, za razvoj modela i verifikovanje njegovih rezultata.
AB  - The use of thermal storage tanks (TST) infacilitiesthat use renewable energy resources (biomass) represents a  good way to  increase their energy efficiency.The main reason for their introduction is the fact that the energy production in biomass boilers is seldom constant, and frequently changes during theday, depending on the conditions of its use. This paper presents the results in the development of TST in which the thermal storage material is melted on atmospheric pressure,enabling on that way the use of the energy of phase change for energy storage. TST of this type enable more thermal energy storage per volume unit, but also (depending of the working medium) enable higher temperatures of the working medium, which is necessary in the co-generated facilities.For the purpose of the experimental research of thermal and flow processes in TST a prototype of TST was designed and made. It has a cylindrical shape, with the working volume of 77 dm3. Theworking material is heated by 2.4 kW electric heater positioned along the TST axes, and is cooled by the air. For the purpose of this workparaffin as a working medium was used.Measurements were performed for non-stationary  as  well  as  for  stationary  working  regimes.  As  a  result,  an  extensive  set  of experimental data was obtained, which will serve in the numerical study, as a basis for the developing a numerical model to verify its results.
PB  - Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS) : Društvo za procesnu tehniku
C3  - 26. Međunarodni kongres o procesnoj industriji - PROCESING ′13 : zbornik radova
T1  - Mogućnosti korišćenja akumulatora toplote sa promenom faze u postrojenjima na biomasu
T1  - Feasibility of using thermal storage tankswith a phase change mediumin biomass facilities
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11611
ER  - 

@conference{
author = "Živković, Goran and Rudonja, Nedžad and Repić, Branislav and Dakić, Dragoljub and Komatina, Mirko",
year = "2013",
abstract = "Korišćenje akumulatora toplote na postrojenjima koja koriste obnovljive izvore energije (biomasu) predstavlja dobar način da se poveća njihova energetska efikasnost. Glavni razlog ugradnje akumulatora toplote je taj što je opterećenje kotlova na biomasu retko kada konstantno, jer se menja tokom dana i tokom godine, zavisno od uslova korišćenja kotla. U radu su prikazani rezultati razvoja akumulatora toplote kod kojih se materijal za akumulaciju topi na atmosferskom pritisku, omogućavajući na taj način korišćenje energije faznog prelaza za skladištenje energije dobijene sagorevanjem biomase. Akumulatori toplote ovog tipa omogućavaju veću količinu akumulirane toplote po jedinici zapremine, a takođe, u zavisnosti od radnog medijuma, omogućavaju dostizanje viših temperatura radnog medijuma, što je neophodan uslov kod postrojenja sa kogeneracijom. U svrhu eksperimentalnog ispitivanja strujnih i termičkih procesa u akumulatoru toplote konstruisan je i izrađen prototip takvog akumulatora toplote. On je cilindričnog oblika, zapremine 77 dm3. Radni material se greje električnim grejačem snage 2,4 kW, a hladi se vazduhom. Kao radni medijum korišćen je parafin. Merenja su vršena kako u nestacionarnom tako i u stacionarnom režimu rada. Dobijena je obimna baza eksperimentalnih podataka, koji će se koristiti u numeričkom istraživanju, za razvoj modela i verifikovanje njegovih rezultata., The use of thermal storage tanks (TST) infacilitiesthat use renewable energy resources (biomass) represents a  good way to  increase their energy efficiency.The main reason for their introduction is the fact that the energy production in biomass boilers is seldom constant, and frequently changes during theday, depending on the conditions of its use. This paper presents the results in the development of TST in which the thermal storage material is melted on atmospheric pressure,enabling on that way the use of the energy of phase change for energy storage. TST of this type enable more thermal energy storage per volume unit, but also (depending of the working medium) enable higher temperatures of the working medium, which is necessary in the co-generated facilities.For the purpose of the experimental research of thermal and flow processes in TST a prototype of TST was designed and made. It has a cylindrical shape, with the working volume of 77 dm3. Theworking material is heated by 2.4 kW electric heater positioned along the TST axes, and is cooled by the air. For the purpose of this workparaffin as a working medium was used.Measurements were performed for non-stationary  as  well  as  for  stationary  working  regimes.  As  a  result,  an  extensive  set  of experimental data was obtained, which will serve in the numerical study, as a basis for the developing a numerical model to verify its results.",
publisher = "Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS) : Društvo za procesnu tehniku",
journal = "26. Međunarodni kongres o procesnoj industriji - PROCESING ′13 : zbornik radova",
title = "Mogućnosti korišćenja akumulatora toplote sa promenom faze u postrojenjima na biomasu, Feasibility of using thermal storage tankswith a phase change mediumin biomass facilities",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11611"
}

Živković, G., Rudonja, N., Repić, B., Dakić, D.,& Komatina, M.. (2013). Mogućnosti korišćenja akumulatora toplote sa promenom faze u postrojenjima na biomasu. in 26. Međunarodni kongres o procesnoj industriji - PROCESING ′13 : zbornik radova
Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS) : Društvo za procesnu tehniku..
https://hdl.handle.net/21.15107/rcub_vinar_11611

Živković G, Rudonja N, Repić B, Dakić D, Komatina M. Mogućnosti korišćenja akumulatora toplote sa promenom faze u postrojenjima na biomasu. in 26. Međunarodni kongres o procesnoj industriji - PROCESING ′13 : zbornik radova. 2013;.
https://hdl.handle.net/21.15107/rcub_vinar_11611 .

Živković, Goran, Rudonja, Nedžad, Repić, Branislav, Dakić, Dragoljub, Komatina, Mirko, "Mogućnosti korišćenja akumulatora toplote sa promenom faze u postrojenjima na biomasu" in 26. Međunarodni kongres o procesnoj industriji - PROCESING ′13 : zbornik radova (2013),
https://hdl.handle.net/21.15107/rcub_vinar_11611 .

TY  - CONF
AU  - Repić, Branislav
AU  - Živković, Goran
AU  - Dakić, Dragoljub
AU  - Đurović, Dejan
AU  - Erić, Aleksandar
AU  - Nemoda, Stevan
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11612
AB  - Ekonomajzeri tj. zagrejači vode predstavljaju kotlovsku grejnu površinu koja se koristi za zagrevanje napojne vode u kotlu. Za intenzifikaciju razmene toplote i smanjenje zaprljanja cevi ekonomajzeri preporučuje se korišćenje orebrenih cevi. U radu su prikazani rezultati strujno-termičkih ispitivanja više ekonomajzera toplotne snage od 0,83 do 1,67 MW. Ekonomajzeri su izrađeni od spiralno orebrenih cevi Ø38x3,2 mm postavljenih u šahovskom rasporedu. Visina rebara iznosi 12,5 mm i kontinualno su zavarene za cevi, a njihova debljina iznosi 1 mm. Osnovni cilj ispitivanja bio je da se eksperimentalno odrede performanse ekonomajzera i utvrdi efikasnost njihovog rada. Kako ispitivani kotlovi nisu radili u nominalnom režimu razvijena je metodologija za preračunavanje dobijenih rezultata ispitivanja na nominalni kapacitet kotla. Pri ispitivanjima mereni su protoci i temperature napojne vode i dimnog gasa kao i pad pritiska sa vodene i gasne strane ekonomajzera. Takođe, meren je i sadržaj O2 u dimnim gasovima u cilju preračunavanja rezultata merenja. Dobijeni rezultati pokazali su dobru saglasnost sa projektnim podacima isporučioca opreme.
AB  - Economizers i.e.    water heaters are the boiler heating surface used for heating boiler feed water. For intensification of heat exchange and reducing contamination in economizers it is recommended to use finned tubes. This paper presents the results of thermo-fluid testing of several economizers  with  heat  power  from  0.83  to  1.67 MW.  Economizers  are  made  ofspirally finned tubes Ø38x3, 2 mm with chess set in the schedule. Fins height is 12.5 mm andthey  are continuously welded to the tube, and their thickness is 1 mm. The main objective ofthis  study  was  to  experimentally  determine  performance  of  the  economizers  and  determine their  effectiveness.  Since  the  tested  boilers were  not  working  in  the  nominal  regime,  a methodology for  converting  the  obtained  results  at  nominal  capacity  of  the  boiler  has  been  developed. During  the tests were measured flow rates and temperature of the feed water andflue  gas  as  well  as  the pressure  drop  both on  the  water  and  gas  side  of  economizer.  In addition, O2 content in the flue gases has been measured in order to recalculate measurement results.  The  results  have  shown good  agreement  with  projected  parameters  guaranteed  by  supplier.
PB  - Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS) : Društvo za procesnu tehniku
C3  - 26. Međunarodni kongres o procesnoj industriji - PROCESING ′13 : zbornik radova
T1  - Eksperimentalno određivanje perfomansi ekonomajzera sa spiralno orebrenim cevima
T1  - Experimental determination of economizer performance with spirally ribbed pipes
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11612
ER  - 

@conference{
author = "Repić, Branislav and Živković, Goran and Dakić, Dragoljub and Đurović, Dejan and Erić, Aleksandar and Nemoda, Stevan",
year = "2013",
abstract = "Ekonomajzeri tj. zagrejači vode predstavljaju kotlovsku grejnu površinu koja se koristi za zagrevanje napojne vode u kotlu. Za intenzifikaciju razmene toplote i smanjenje zaprljanja cevi ekonomajzeri preporučuje se korišćenje orebrenih cevi. U radu su prikazani rezultati strujno-termičkih ispitivanja više ekonomajzera toplotne snage od 0,83 do 1,67 MW. Ekonomajzeri su izrađeni od spiralno orebrenih cevi Ø38x3,2 mm postavljenih u šahovskom rasporedu. Visina rebara iznosi 12,5 mm i kontinualno su zavarene za cevi, a njihova debljina iznosi 1 mm. Osnovni cilj ispitivanja bio je da se eksperimentalno odrede performanse ekonomajzera i utvrdi efikasnost njihovog rada. Kako ispitivani kotlovi nisu radili u nominalnom režimu razvijena je metodologija za preračunavanje dobijenih rezultata ispitivanja na nominalni kapacitet kotla. Pri ispitivanjima mereni su protoci i temperature napojne vode i dimnog gasa kao i pad pritiska sa vodene i gasne strane ekonomajzera. Takođe, meren je i sadržaj O2 u dimnim gasovima u cilju preračunavanja rezultata merenja. Dobijeni rezultati pokazali su dobru saglasnost sa projektnim podacima isporučioca opreme., Economizers i.e.    water heaters are the boiler heating surface used for heating boiler feed water. For intensification of heat exchange and reducing contamination in economizers it is recommended to use finned tubes. This paper presents the results of thermo-fluid testing of several economizers  with  heat  power  from  0.83  to  1.67 MW.  Economizers  are  made  ofspirally finned tubes Ø38x3, 2 mm with chess set in the schedule. Fins height is 12.5 mm andthey  are continuously welded to the tube, and their thickness is 1 mm. The main objective ofthis  study  was  to  experimentally  determine  performance  of  the  economizers  and  determine their  effectiveness.  Since  the  tested  boilers were  not  working  in  the  nominal  regime,  a methodology for  converting  the  obtained  results  at  nominal  capacity  of  the  boiler  has  been  developed. During  the tests were measured flow rates and temperature of the feed water andflue  gas  as  well  as  the pressure  drop  both on  the  water  and  gas  side  of  economizer.  In addition, O2 content in the flue gases has been measured in order to recalculate measurement results.  The  results  have  shown good  agreement  with  projected  parameters  guaranteed  by  supplier.",
publisher = "Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS) : Društvo za procesnu tehniku",
journal = "26. Međunarodni kongres o procesnoj industriji - PROCESING ′13 : zbornik radova",
title = "Eksperimentalno određivanje perfomansi ekonomajzera sa spiralno orebrenim cevima, Experimental determination of economizer performance with spirally ribbed pipes",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11612"
}

Repić, B., Živković, G., Dakić, D., Đurović, D., Erić, A.,& Nemoda, S.. (2013). Eksperimentalno određivanje perfomansi ekonomajzera sa spiralno orebrenim cevima. in 26. Međunarodni kongres o procesnoj industriji - PROCESING ′13 : zbornik radova
Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS) : Društvo za procesnu tehniku..
https://hdl.handle.net/21.15107/rcub_vinar_11612

Repić B, Živković G, Dakić D, Đurović D, Erić A, Nemoda S. Eksperimentalno određivanje perfomansi ekonomajzera sa spiralno orebrenim cevima. in 26. Međunarodni kongres o procesnoj industriji - PROCESING ′13 : zbornik radova. 2013;.
https://hdl.handle.net/21.15107/rcub_vinar_11612 .

Repić, Branislav, Živković, Goran, Dakić, Dragoljub, Đurović, Dejan, Erić, Aleksandar, Nemoda, Stevan, "Eksperimentalno određivanje perfomansi ekonomajzera sa spiralno orebrenim cevima" in 26. Međunarodni kongres o procesnoj industriji - PROCESING ′13 : zbornik radova (2013),
https://hdl.handle.net/21.15107/rcub_vinar_11612 .