TY  - CONF
AU  - Perić, Milica
AU  - Komatina, Mirko
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7388
AB  - In this paper, life cycle assessment (LCA) of two biomass supply chains models in the Republic of Serbia were carried out: LCA of the wood and LCA of the agricultural biomass. These models were developed by analyzing data from similar studies, experimental data, agricultural practice and inventory databases. The analysis includes all processing stages of the final products of these chains, i.e., analysis of obtaining wood chips from the beech tree and analysis of obtaining briquettes from the perennial grass miscanthus. The operations included in the life cycle assessment of wood chips are felling and processing, extraction, chipping and transport. The operations included in the life cycle assessment of miscanthus briquettes are: mowing, baling, transport and briquetting. For conducting LCAs, SimaPro software was used, and the impact assessment was analyzed using the ReCiPE method. The assessment covers six impact categories: climate change, ozone depletion, terrestrial acidification, eutrophication of freshwater ecosystems, formation of photochemical oxidants and formation of particles. As a functional unit 1 t of dried biomass was used.

The results show that the production of miscanthus briquettes has a greater impact in the categories terrestrial acidification and particle formation, while the production of wood chips from beech has a greater impact in the impact categories climate change, ozone depletion, eutrophication and the formation of photochemical oxidants. Comparative analysis of the models indicates that there are no big differences in the values obtained for each analysed category. For example, in the climate change category, 33.5 kg of CO2 equivalents (CO2 eq) are emitted in the miscanthus model, and 35 kg CO2eq in the beech chips model. The biggest difference is in categories photochemical oxidant formation and particulate matter formatting, 462g to 257g of non-methane volatile organic compound equivalents and 77g to 147g of particulate matter formation equivalents for beech and miscanthus, respectively. The operation in the miscanthus life cycle model that contributes the most to the environmental impact is briquetting due to the low productivity of the briquetting machine, as well as the significant consumption of electricity, which is mainly obtained from fossil fuels. In the beech chips life cycle model, the chipping operation shows the greatest impact due to the low productivity of the process, high consumption of fossil fuels i.e., diesel and high emission factors due to the use of obsolete machinery.

These analysis were performed in order to show the possible impacts on the environment that these biomass supply chains could have based on the available data. In practice productivity and efficiency of the processes could be increased, and environmental impacts could be reduced by choosing more modern equipments and machinery, using preferably electricity from renewable sources, or applying different biomass processing approach. Also, it is of great importance to carefully determine system boundaries and functional units, considering that different types of biomass with different characteristics, different rotation periods and processing methods are compared.
C3  - Full Papers Proceeding of International Conference "Power Plants 2023", November 2023, Zlatibor Serbia
T1  - LIFE CYCLE ASSESSMENT OF MAIN BIOMASS SUPPLY CHAINS IN SERBIA - INITIAL EVALUATIONS
EP  - 971
SP  - 960
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7388
ER  - 

@conference{
author = "Perić, Milica and Komatina, Mirko",
year = "2023",
abstract = "In this paper, life cycle assessment (LCA) of two biomass supply chains models in the Republic of Serbia were carried out: LCA of the wood and LCA of the agricultural biomass. These models were developed by analyzing data from similar studies, experimental data, agricultural practice and inventory databases. The analysis includes all processing stages of the final products of these chains, i.e., analysis of obtaining wood chips from the beech tree and analysis of obtaining briquettes from the perennial grass miscanthus. The operations included in the life cycle assessment of wood chips are felling and processing, extraction, chipping and transport. The operations included in the life cycle assessment of miscanthus briquettes are: mowing, baling, transport and briquetting. For conducting LCAs, SimaPro software was used, and the impact assessment was analyzed using the ReCiPE method. The assessment covers six impact categories: climate change, ozone depletion, terrestrial acidification, eutrophication of freshwater ecosystems, formation of photochemical oxidants and formation of particles. As a functional unit 1 t of dried biomass was used.

The results show that the production of miscanthus briquettes has a greater impact in the categories terrestrial acidification and particle formation, while the production of wood chips from beech has a greater impact in the impact categories climate change, ozone depletion, eutrophication and the formation of photochemical oxidants. Comparative analysis of the models indicates that there are no big differences in the values obtained for each analysed category. For example, in the climate change category, 33.5 kg of CO2 equivalents (CO2 eq) are emitted in the miscanthus model, and 35 kg CO2eq in the beech chips model. The biggest difference is in categories photochemical oxidant formation and particulate matter formatting, 462g to 257g of non-methane volatile organic compound equivalents and 77g to 147g of particulate matter formation equivalents for beech and miscanthus, respectively. The operation in the miscanthus life cycle model that contributes the most to the environmental impact is briquetting due to the low productivity of the briquetting machine, as well as the significant consumption of electricity, which is mainly obtained from fossil fuels. In the beech chips life cycle model, the chipping operation shows the greatest impact due to the low productivity of the process, high consumption of fossil fuels i.e., diesel and high emission factors due to the use of obsolete machinery.

These analysis were performed in order to show the possible impacts on the environment that these biomass supply chains could have based on the available data. In practice productivity and efficiency of the processes could be increased, and environmental impacts could be reduced by choosing more modern equipments and machinery, using preferably electricity from renewable sources, or applying different biomass processing approach. Also, it is of great importance to carefully determine system boundaries and functional units, considering that different types of biomass with different characteristics, different rotation periods and processing methods are compared.",
journal = "Full Papers Proceeding of International Conference "Power Plants 2023", November 2023, Zlatibor Serbia",
title = "LIFE CYCLE ASSESSMENT OF MAIN BIOMASS SUPPLY CHAINS IN SERBIA - INITIAL EVALUATIONS",
pages = "971-960",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7388"
}

Perić, M.,& Komatina, M.. (2023). LIFE CYCLE ASSESSMENT OF MAIN BIOMASS SUPPLY CHAINS IN SERBIA - INITIAL EVALUATIONS. in Full Papers Proceeding of International Conference "Power Plants 2023", November 2023, Zlatibor Serbia, 960-971.
https://hdl.handle.net/21.15107/rcub_machinery_7388

Perić M, Komatina M. LIFE CYCLE ASSESSMENT OF MAIN BIOMASS SUPPLY CHAINS IN SERBIA - INITIAL EVALUATIONS. in Full Papers Proceeding of International Conference "Power Plants 2023", November 2023, Zlatibor Serbia. 2023;:960-971.
https://hdl.handle.net/21.15107/rcub_machinery_7388 .

Perić, Milica, Komatina, Mirko, "LIFE CYCLE ASSESSMENT OF MAIN BIOMASS SUPPLY CHAINS IN SERBIA - INITIAL EVALUATIONS" in Full Papers Proceeding of International Conference "Power Plants 2023", November 2023, Zlatibor Serbia (2023):960-971,
https://hdl.handle.net/21.15107/rcub_machinery_7388 .

TY  - CONF
AU  - Komatina, Mirko
AU  - Perić, Milica
AU  - Milanović, Mihailo
AU  - Manić, Dimitrije
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7275
C3  - Naučni skup „Potencijal i efekti korišćenja biomase u Republici Srbiji“, SANU, Beograd, Srbija
T1  - Aspekti korišćenja biomase u cilju povećanja energetske efikasnosti i smanjenja emisije CO2
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7275
ER  - 

@conference{
author = "Komatina, Mirko and Perić, Milica and Milanović, Mihailo and Manić, Dimitrije",
year = "2022",
journal = "Naučni skup „Potencijal i efekti korišćenja biomase u Republici Srbiji“, SANU, Beograd, Srbija",
title = "Aspekti korišćenja biomase u cilju povećanja energetske efikasnosti i smanjenja emisije CO2",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7275"
}

Komatina, M., Perić, M., Milanović, M.,& Manić, D.. (2022). Aspekti korišćenja biomase u cilju povećanja energetske efikasnosti i smanjenja emisije CO2. in Naučni skup „Potencijal i efekti korišćenja biomase u Republici Srbiji“, SANU, Beograd, Srbija.
https://hdl.handle.net/21.15107/rcub_machinery_7275

Komatina M, Perić M, Milanović M, Manić D. Aspekti korišćenja biomase u cilju povećanja energetske efikasnosti i smanjenja emisije CO2. in Naučni skup „Potencijal i efekti korišćenja biomase u Republici Srbiji“, SANU, Beograd, Srbija. 2022;.
https://hdl.handle.net/21.15107/rcub_machinery_7275 .

Komatina, Mirko, Perić, Milica, Milanović, Mihailo, Manić, Dimitrije, "Aspekti korišćenja biomase u cilju povećanja energetske efikasnosti i smanjenja emisije CO2" in Naučni skup „Potencijal i efekti korišćenja biomase u Republici Srbiji“, SANU, Beograd, Srbija (2022),
https://hdl.handle.net/21.15107/rcub_machinery_7275 .

TY  - CONF
AU  - Kardaš Ančić, Danijela
AU  - Komatina, Mirko
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7276
C3  - ICAS 2022 CONFERENCE, Banja Luka
T1  - MATHEMATICAL MODELS FOR PV MODULE TEMPERATURE USING WEATHER DATA
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7276
ER  - 

@conference{
author = "Kardaš Ančić, Danijela and Komatina, Mirko",
year = "2022",
journal = "ICAS 2022 CONFERENCE, Banja Luka",
title = "MATHEMATICAL MODELS FOR PV MODULE TEMPERATURE USING WEATHER DATA",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7276"
}

Kardaš Ančić, D.,& Komatina, M.. (2022). MATHEMATICAL MODELS FOR PV MODULE TEMPERATURE USING WEATHER DATA. in ICAS 2022 CONFERENCE, Banja Luka.
https://hdl.handle.net/21.15107/rcub_machinery_7276

Kardaš Ančić D, Komatina M. MATHEMATICAL MODELS FOR PV MODULE TEMPERATURE USING WEATHER DATA. in ICAS 2022 CONFERENCE, Banja Luka. 2022;.
https://hdl.handle.net/21.15107/rcub_machinery_7276 .

Kardaš Ančić, Danijela, Komatina, Mirko, "MATHEMATICAL MODELS FOR PV MODULE TEMPERATURE USING WEATHER DATA" in ICAS 2022 CONFERENCE, Banja Luka (2022),
https://hdl.handle.net/21.15107/rcub_machinery_7276 .

TY  - CONF
AU  - Manasijević, Srećko
AU  - Komatina, Mirko
AU  - Vidaković, Jelena
AU  - Stepanić, Pavle
AU  - Vasović, Ivana
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7277
C3  - SimTerm2022, PROCEEDINGS, 20th International Conference on Thermal Science and Engineering of Serbia
T1  - Flue Gas Heat Recovery in Wood Chip Boiler Used for Chip Drying
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7277
ER  - 

@conference{
author = "Manasijević, Srećko and Komatina, Mirko and Vidaković, Jelena and Stepanić, Pavle and Vasović, Ivana",
year = "2022",
journal = "SimTerm2022, PROCEEDINGS, 20th International Conference on Thermal Science and Engineering of Serbia",
title = "Flue Gas Heat Recovery in Wood Chip Boiler Used for Chip Drying",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7277"
}

Manasijević, S., Komatina, M., Vidaković, J., Stepanić, P.,& Vasović, I.. (2022). Flue Gas Heat Recovery in Wood Chip Boiler Used for Chip Drying. in SimTerm2022, PROCEEDINGS, 20th International Conference on Thermal Science and Engineering of Serbia.
https://hdl.handle.net/21.15107/rcub_machinery_7277

Manasijević S, Komatina M, Vidaković J, Stepanić P, Vasović I. Flue Gas Heat Recovery in Wood Chip Boiler Used for Chip Drying. in SimTerm2022, PROCEEDINGS, 20th International Conference on Thermal Science and Engineering of Serbia. 2022;.
https://hdl.handle.net/21.15107/rcub_machinery_7277 .

Manasijević, Srećko, Komatina, Mirko, Vidaković, Jelena, Stepanić, Pavle, Vasović, Ivana, "Flue Gas Heat Recovery in Wood Chip Boiler Used for Chip Drying" in SimTerm2022, PROCEEDINGS, 20th International Conference on Thermal Science and Engineering of Serbia (2022),
https://hdl.handle.net/21.15107/rcub_machinery_7277 .

TY  - CONF
AU  - Kardaš Ančić, Danijela
AU  - Komatina, Mirko
AU  - Gvero, Petar
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7278
C3  - SimTerm2022, PROCEEDINGS, 20th International Conference on Thermal Science and Engineering of Serbia
T1  - THEORETIC PHOTOVOLTAIC CELL/MODULE TEMPERATURE BASED ON REAL WEATHER DATA FOR CONTINENTAL,
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7278
ER  - 

@conference{
author = "Kardaš Ančić, Danijela and Komatina, Mirko and Gvero, Petar",
year = "2022",
journal = "SimTerm2022, PROCEEDINGS, 20th International Conference on Thermal Science and Engineering of Serbia",
title = "THEORETIC PHOTOVOLTAIC CELL/MODULE TEMPERATURE BASED ON REAL WEATHER DATA FOR CONTINENTAL,",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7278"
}

Kardaš Ančić, D., Komatina, M.,& Gvero, P.. (2022). THEORETIC PHOTOVOLTAIC CELL/MODULE TEMPERATURE BASED ON REAL WEATHER DATA FOR CONTINENTAL,. in SimTerm2022, PROCEEDINGS, 20th International Conference on Thermal Science and Engineering of Serbia.
https://hdl.handle.net/21.15107/rcub_machinery_7278

Kardaš Ančić D, Komatina M, Gvero P. THEORETIC PHOTOVOLTAIC CELL/MODULE TEMPERATURE BASED ON REAL WEATHER DATA FOR CONTINENTAL,. in SimTerm2022, PROCEEDINGS, 20th International Conference on Thermal Science and Engineering of Serbia. 2022;.
https://hdl.handle.net/21.15107/rcub_machinery_7278 .

Kardaš Ančić, Danijela, Komatina, Mirko, Gvero, Petar, "THEORETIC PHOTOVOLTAIC CELL/MODULE TEMPERATURE BASED ON REAL WEATHER DATA FOR CONTINENTAL," in SimTerm2022, PROCEEDINGS, 20th International Conference on Thermal Science and Engineering of Serbia (2022),
https://hdl.handle.net/21.15107/rcub_machinery_7278 .

TY  - JOUR
AU  - Milanović, Mihailo
AU  - Komatina, Mirko
AU  - Janković, Bojan
AU  - Stojiljković, Dragoslava
AU  - Manić, Nebojša
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/96
AB  - Sustainable development and mitigation of the climate changes are one of the main challenges of the circular economy, while the use of food industry residues could make an important contribution in tackling these challenges. In order to improve energy efficiency aspects of the industry residue treatment, generally, the drying process as the first step of the entire processing chain should be further analyzed. Regarding this, a comprehensive kinetic study was performed to provide the detailed mechanism of moisture removal from base raw material. Industrial residues from apple juice production were used for isothermal thermogravimetric analysis in the air atmosphere at different temperatures. Based on experimental data, different kinetic models were applied to determine kinetic parameters and dominant conversion functions. The dependence of the activation energy evaluated by Friedman's isoconversional method on the conversion degree shows that the drying process is complex one. The mechanism of drying process and corresponding kinetic parameters were determined by multivariate nonlinear regression program (model-based analysis) and checked by modulated isothermal prediction (for quasi-isothermal conditions) and the isothermal prediction (for different isothermal conditions) tests. It was pointed out that temperature-dependent reaction step controlling overall mechanism represents releasing of CO2 which can suppress autocatalytic action of the ethylene, influencing the flavor and texture changes of the apple tissue. Obtained results can be used for prediction of the life-time of studied material, corresponding to selected temperatures and different conversion levels.
PB  - Springer, Dordrecht
T2  - Journal of Thermal Analysis and Calorimetry
T1  - The kinetic study of juice industry residues drying process based on TGA-DTG experimental data
DO  - 10.1007/s10973-022-11289-5
ER  - 

@article{
author = "Milanović, Mihailo and Komatina, Mirko and Janković, Bojan and Stojiljković, Dragoslava and Manić, Nebojša",
year = "2022",
abstract = "Sustainable development and mitigation of the climate changes are one of the main challenges of the circular economy, while the use of food industry residues could make an important contribution in tackling these challenges. In order to improve energy efficiency aspects of the industry residue treatment, generally, the drying process as the first step of the entire processing chain should be further analyzed. Regarding this, a comprehensive kinetic study was performed to provide the detailed mechanism of moisture removal from base raw material. Industrial residues from apple juice production were used for isothermal thermogravimetric analysis in the air atmosphere at different temperatures. Based on experimental data, different kinetic models were applied to determine kinetic parameters and dominant conversion functions. The dependence of the activation energy evaluated by Friedman's isoconversional method on the conversion degree shows that the drying process is complex one. The mechanism of drying process and corresponding kinetic parameters were determined by multivariate nonlinear regression program (model-based analysis) and checked by modulated isothermal prediction (for quasi-isothermal conditions) and the isothermal prediction (for different isothermal conditions) tests. It was pointed out that temperature-dependent reaction step controlling overall mechanism represents releasing of CO2 which can suppress autocatalytic action of the ethylene, influencing the flavor and texture changes of the apple tissue. Obtained results can be used for prediction of the life-time of studied material, corresponding to selected temperatures and different conversion levels.",
publisher = "Springer, Dordrecht",
journal = "Journal of Thermal Analysis and Calorimetry",
title = "The kinetic study of juice industry residues drying process based on TGA-DTG experimental data",
doi = "10.1007/s10973-022-11289-5"
}

Milanović, M., Komatina, M., Janković, B., Stojiljković, D.,& Manić, N.. (2022). The kinetic study of juice industry residues drying process based on TGA-DTG experimental data. in Journal of Thermal Analysis and Calorimetry
Springer, Dordrecht..
https://doi.org/10.1007/s10973-022-11289-5

Milanović M, Komatina M, Janković B, Stojiljković D, Manić N. The kinetic study of juice industry residues drying process based on TGA-DTG experimental data. in Journal of Thermal Analysis and Calorimetry. 2022;.
doi:10.1007/s10973-022-11289-5 .

Milanović, Mihailo, Komatina, Mirko, Janković, Bojan, Stojiljković, Dragoslava, Manić, Nebojša, "The kinetic study of juice industry residues drying process based on TGA-DTG experimental data" in Journal of Thermal Analysis and Calorimetry (2022),
https://doi.org/10.1007/s10973-022-11289-5 . .

TY  - CONF
AU  - Milanović, Mihailo
AU  - Komatina, Mirko
AU  - Janković, Bojan
AU  - Stojiljković, Dragoslava
AU  - Manić, Nebojša
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7279
C3  - ICTAC 2020, p. 37, Online conference, Krakow, Poland
T1  - The kinetic study of juice industry residues drying process based on TG-DTG experimental data
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7279
ER  - 

@conference{
author = "Milanović, Mihailo and Komatina, Mirko and Janković, Bojan and Stojiljković, Dragoslava and Manić, Nebojša",
year = "2021",
journal = "ICTAC 2020, p. 37, Online conference, Krakow, Poland",
title = "The kinetic study of juice industry residues drying process based on TG-DTG experimental data",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7279"
}

Milanović, M., Komatina, M., Janković, B., Stojiljković, D.,& Manić, N.. (2021). The kinetic study of juice industry residues drying process based on TG-DTG experimental data. in ICTAC 2020, p. 37, Online conference, Krakow, Poland.
https://hdl.handle.net/21.15107/rcub_machinery_7279

Milanović M, Komatina M, Janković B, Stojiljković D, Manić N. The kinetic study of juice industry residues drying process based on TG-DTG experimental data. in ICTAC 2020, p. 37, Online conference, Krakow, Poland. 2021;.
https://hdl.handle.net/21.15107/rcub_machinery_7279 .

Milanović, Mihailo, Komatina, Mirko, Janković, Bojan, Stojiljković, Dragoslava, Manić, Nebojša, "The kinetic study of juice industry residues drying process based on TG-DTG experimental data" in ICTAC 2020, p. 37, Online conference, Krakow, Poland (2021),
https://hdl.handle.net/21.15107/rcub_machinery_7279 .

TY  - JOUR
AU  - Manić, Nebojša
AU  - Janković, Bojan
AU  - Milović, Ljubica
AU  - Komatina, Mirko
AU  - Stojiljković, Dragoslava
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/92
AB  - This study presents the experimental results of the mechanical and thermophysical properties of wood pellet samples important for their utilization in pellet stoves and boilers for heat production. The impact of operational parameters during the production process on a single pelletizer unit for three typical domestic commercial wood pellet samples (PWP110, BWP110, and BWP140) on fuel particle mechanical characteristics and related thermal properties was analyzed. It was concluded that the changes in raw material selection, as well as related operating parameters (extrusion length, i.e., die temperature during production process), have influenced the key mechanical and thermal characteristics of tested commercial wood pellets. The presented results have indicated the existence of a thin solid layer (due to waxes and subsequently lignin coating layer behaviors depending on their glass transition temperatures) on the surface of the BWP140 pellet sample. This layer leads to increasing the thermal resistance in the considered sample which can be explained by decreasing the effective thermal conductivity. Also, the forming of this layer on the surface of the wood pellet sample was caused by the production process (high-temperature impact explained by increasing friction between the die and feedstock during pellets production). It could be related to a lower value of effective thermal conductivity and specific heat capacity for considered (Beech) wood pellet sample.
PB  - Springer Heidelberg, Heidelberg
T2  - Biomass Conversion and Biorefinery
T1  - The impact of production operating parameters on mechanical and thermophysical characteristics of commercial wood pellets
DO  - 10.1007/s13399-021-01609-4
ER  - 

@article{
author = "Manić, Nebojša and Janković, Bojan and Milović, Ljubica and Komatina, Mirko and Stojiljković, Dragoslava",
year = "2021",
abstract = "This study presents the experimental results of the mechanical and thermophysical properties of wood pellet samples important for their utilization in pellet stoves and boilers for heat production. The impact of operational parameters during the production process on a single pelletizer unit for three typical domestic commercial wood pellet samples (PWP110, BWP110, and BWP140) on fuel particle mechanical characteristics and related thermal properties was analyzed. It was concluded that the changes in raw material selection, as well as related operating parameters (extrusion length, i.e., die temperature during production process), have influenced the key mechanical and thermal characteristics of tested commercial wood pellets. The presented results have indicated the existence of a thin solid layer (due to waxes and subsequently lignin coating layer behaviors depending on their glass transition temperatures) on the surface of the BWP140 pellet sample. This layer leads to increasing the thermal resistance in the considered sample which can be explained by decreasing the effective thermal conductivity. Also, the forming of this layer on the surface of the wood pellet sample was caused by the production process (high-temperature impact explained by increasing friction between the die and feedstock during pellets production). It could be related to a lower value of effective thermal conductivity and specific heat capacity for considered (Beech) wood pellet sample.",
publisher = "Springer Heidelberg, Heidelberg",
journal = "Biomass Conversion and Biorefinery",
title = "The impact of production operating parameters on mechanical and thermophysical characteristics of commercial wood pellets",
doi = "10.1007/s13399-021-01609-4"
}

Manić, N., Janković, B., Milović, L., Komatina, M.,& Stojiljković, D.. (2021). The impact of production operating parameters on mechanical and thermophysical characteristics of commercial wood pellets. in Biomass Conversion and Biorefinery
Springer Heidelberg, Heidelberg..
https://doi.org/10.1007/s13399-021-01609-4

Manić N, Janković B, Milović L, Komatina M, Stojiljković D. The impact of production operating parameters on mechanical and thermophysical characteristics of commercial wood pellets. in Biomass Conversion and Biorefinery. 2021;.
doi:10.1007/s13399-021-01609-4 .

Manić, Nebojša, Janković, Bojan, Milović, Ljubica, Komatina, Mirko, Stojiljković, Dragoslava, "The impact of production operating parameters on mechanical and thermophysical characteristics of commercial wood pellets" in Biomass Conversion and Biorefinery (2021),
https://doi.org/10.1007/s13399-021-01609-4 . .

TY  - JOUR
AU  - Micović, Aleksandar M.
AU  - Komatina, Mirko
AU  - Brkljac, Nenko S.
AU  - Šarkočević, Živče
AU  - Camagić, Ivica
AU  - Golubović, Zoran V
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3557
AB  - The paper presents the integrated application of two methods during testing HVAC system efficiency in the cabins of HUMMER.1151A1 and OAR 1RL-128D offroad vehicles. Spatial measurements of change in air temperature per time have been performed at three vertical levels (head, knees, and feet) of the driver and passengers, which totals to 15 measuring points per vehicle. The main goal of testing was to evaluate accurately the efficiency of heating and cooling in relation time interval required to attain a designed temperature of comfort in the vehicle cabin, on condition that the difference in ambient temperature levels does not exceed 10 degrees C. With a view to more efficient evaluation of thermal comfort in vehicle cabins, the testing was performed also of predicted mean vote and predicted percentage of dissatisfied indices. Standard thermal comfort surveys ask subjects about their thermal sensation on a seven-point scale from cold (-3) to hot (+3). This research is carried out according to the methods based on ISO 7730, ASHRAE 55, and SORS 8419 standards.
PB  - Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd
T2  - Thermal Science
T1  - Evaluation of heating efficiency and thermal comfort in special purpose vehicle cabins
EP  - 4370
IS  - 6
SP  - 4359
VL  - 25
DO  - 10.2298/TSCI201103172M
ER  - 

@article{
author = "Micović, Aleksandar M. and Komatina, Mirko and Brkljac, Nenko S. and Šarkočević, Živče and Camagić, Ivica and Golubović, Zoran V",
year = "2021",
abstract = "The paper presents the integrated application of two methods during testing HVAC system efficiency in the cabins of HUMMER.1151A1 and OAR 1RL-128D offroad vehicles. Spatial measurements of change in air temperature per time have been performed at three vertical levels (head, knees, and feet) of the driver and passengers, which totals to 15 measuring points per vehicle. The main goal of testing was to evaluate accurately the efficiency of heating and cooling in relation time interval required to attain a designed temperature of comfort in the vehicle cabin, on condition that the difference in ambient temperature levels does not exceed 10 degrees C. With a view to more efficient evaluation of thermal comfort in vehicle cabins, the testing was performed also of predicted mean vote and predicted percentage of dissatisfied indices. Standard thermal comfort surveys ask subjects about their thermal sensation on a seven-point scale from cold (-3) to hot (+3). This research is carried out according to the methods based on ISO 7730, ASHRAE 55, and SORS 8419 standards.",
publisher = "Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd",
journal = "Thermal Science",
title = "Evaluation of heating efficiency and thermal comfort in special purpose vehicle cabins",
pages = "4370-4359",
number = "6",
volume = "25",
doi = "10.2298/TSCI201103172M"
}

Micović, A. M., Komatina, M., Brkljac, N. S., Šarkočević, Ž., Camagić, I.,& Golubović, Z. V.. (2021). Evaluation of heating efficiency and thermal comfort in special purpose vehicle cabins. in Thermal Science
Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd., 25(6), 4359-4370.
https://doi.org/10.2298/TSCI201103172M

Micović AM, Komatina M, Brkljac NS, Šarkočević Ž, Camagić I, Golubović ZV. Evaluation of heating efficiency and thermal comfort in special purpose vehicle cabins. in Thermal Science. 2021;25(6):4359-4370.
doi:10.2298/TSCI201103172M .

Micović, Aleksandar M., Komatina, Mirko, Brkljac, Nenko S., Šarkočević, Živče, Camagić, Ivica, Golubović, Zoran V, "Evaluation of heating efficiency and thermal comfort in special purpose vehicle cabins" in Thermal Science, 25, no. 6 (2021):4359-4370,
https://doi.org/10.2298/TSCI201103172M . .

TY  - JOUR
AU  - Milanović, Mihailo P.
AU  - Komatina, Mirko
AU  - Zlatanović, Ivan
AU  - Manić, Nebojša
AU  - Antonijević, Dragi
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3556
AB  - The efficient utilization of waste from food industry is possible after thermal treatment of the material. This treatment should be economically feasible and compromise the energy efficient drying process. The main goal of this investigation is to determine drying characteristics of nectarine pomace as a waste from food industry. The measurements were performed in an experimental dryer by combined conductive-convective drying method with disk-shaped samples of 5, 7, and 10 mm thickness and 100 mm in diameter at the air temperatures of 30, 40, 50, 60, and 70 degrees C, hot plate temperatures of 50, 60, and 70 degrees C and air velocity of 1.5 m/s. The drying curves were compared to a few semi-theoretical mathematical models. The Logarithmic model showed the best correlation. On the basis of experiments, it is determined that the drying process takes place in a falling rate period and it is accepted that the main mechanism of moisture removal is diffusion. The effective coefficient of diffusion was determined using experimental results by calculating the slope of the drying curves. Drying time and equilibrium moisture are determined for each experiment. Analysis of drying curves showed that the conductive-enhanced drying method reduces drying times and increases the diffusivity coefficient. The character of drying rate curves for conductive-enhanced drying was analysed and compared with pure convective drying of nectarine pomace.
PB  - Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd
T2  - Thermal Science
T1  - Kinetic parameters identification of conductive enhanced hot air drying process of food waste
EP  - 1807
IS  - 3
SP  - 1795
VL  - 25
DO  - 10.2298/TSCI200312223M
ER  - 

@article{
author = "Milanović, Mihailo P. and Komatina, Mirko and Zlatanović, Ivan and Manić, Nebojša and Antonijević, Dragi",
year = "2021",
abstract = "The efficient utilization of waste from food industry is possible after thermal treatment of the material. This treatment should be economically feasible and compromise the energy efficient drying process. The main goal of this investigation is to determine drying characteristics of nectarine pomace as a waste from food industry. The measurements were performed in an experimental dryer by combined conductive-convective drying method with disk-shaped samples of 5, 7, and 10 mm thickness and 100 mm in diameter at the air temperatures of 30, 40, 50, 60, and 70 degrees C, hot plate temperatures of 50, 60, and 70 degrees C and air velocity of 1.5 m/s. The drying curves were compared to a few semi-theoretical mathematical models. The Logarithmic model showed the best correlation. On the basis of experiments, it is determined that the drying process takes place in a falling rate period and it is accepted that the main mechanism of moisture removal is diffusion. The effective coefficient of diffusion was determined using experimental results by calculating the slope of the drying curves. Drying time and equilibrium moisture are determined for each experiment. Analysis of drying curves showed that the conductive-enhanced drying method reduces drying times and increases the diffusivity coefficient. The character of drying rate curves for conductive-enhanced drying was analysed and compared with pure convective drying of nectarine pomace.",
publisher = "Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd",
journal = "Thermal Science",
title = "Kinetic parameters identification of conductive enhanced hot air drying process of food waste",
pages = "1807-1795",
number = "3",
volume = "25",
doi = "10.2298/TSCI200312223M"
}

Milanović, M. P., Komatina, M., Zlatanović, I., Manić, N.,& Antonijević, D.. (2021). Kinetic parameters identification of conductive enhanced hot air drying process of food waste. in Thermal Science
Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd., 25(3), 1795-1807.
https://doi.org/10.2298/TSCI200312223M

Milanović MP, Komatina M, Zlatanović I, Manić N, Antonijević D. Kinetic parameters identification of conductive enhanced hot air drying process of food waste. in Thermal Science. 2021;25(3):1795-1807.
doi:10.2298/TSCI200312223M .

Milanović, Mihailo P., Komatina, Mirko, Zlatanović, Ivan, Manić, Nebojša, Antonijević, Dragi, "Kinetic parameters identification of conductive enhanced hot air drying process of food waste" in Thermal Science, 25, no. 3 (2021):1795-1807,
https://doi.org/10.2298/TSCI200312223M . .

TY  - JOUR
AU  - Perić, Milica
AU  - Antonijević, Dragi
AU  - Komatina, Mirko
AU  - Bugarski, Branko
AU  - Rakin, Marko
PY  - 2020
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3407
AB  - Two most common systems of forest biomass supply chains in Serbia are evaluated by using the Life Cycle Assessment (LCA) approach: 'cut-to-length' system with penduculate oak (CLO) on flat terrains with a tractor equipage, and 'tree-length' system with moesian beech (TLB) on more steep terrains, with a skidder. The main focus is put on the fuel consumption and its environmental impact on various stages of wood chips supply chain. Results indicate chipping as a most environmentally burdensome due to the low process productivity and high diesel combustion in outdated machines. CLO system exhibits lower environmental burden due to the 2%-35% lower impact in six out of eleven analysed impact categories compared to the TLB. The main reason is the skidding performed on a more steep terrain with a more powerful machine consuming more diesel than the tractor equipage. The higher impact of the felling operation in CLO system is caused by additional time for processing short oak assortments. The evaluated environmental impacts are consequence of the machinery old age used in Serbian forests. The application of a modern, energy efficient, combined machines such as harvesters and forwarders is recommended though it could have a lot of drawbacks.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Renewable Energy
T1  - Life cycle assessment of wood chips supply chain in Serbia
EP  - 1311
SP  - 1302
VL  - 155
DO  - 10.1016/j.renene.2020.04.026
ER  - 

@article{
author = "Perić, Milica and Antonijević, Dragi and Komatina, Mirko and Bugarski, Branko and Rakin, Marko",
year = "2020",
abstract = "Two most common systems of forest biomass supply chains in Serbia are evaluated by using the Life Cycle Assessment (LCA) approach: 'cut-to-length' system with penduculate oak (CLO) on flat terrains with a tractor equipage, and 'tree-length' system with moesian beech (TLB) on more steep terrains, with a skidder. The main focus is put on the fuel consumption and its environmental impact on various stages of wood chips supply chain. Results indicate chipping as a most environmentally burdensome due to the low process productivity and high diesel combustion in outdated machines. CLO system exhibits lower environmental burden due to the 2%-35% lower impact in six out of eleven analysed impact categories compared to the TLB. The main reason is the skidding performed on a more steep terrain with a more powerful machine consuming more diesel than the tractor equipage. The higher impact of the felling operation in CLO system is caused by additional time for processing short oak assortments. The evaluated environmental impacts are consequence of the machinery old age used in Serbian forests. The application of a modern, energy efficient, combined machines such as harvesters and forwarders is recommended though it could have a lot of drawbacks.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Renewable Energy",
title = "Life cycle assessment of wood chips supply chain in Serbia",
pages = "1311-1302",
volume = "155",
doi = "10.1016/j.renene.2020.04.026"
}

Perić, M., Antonijević, D., Komatina, M., Bugarski, B.,& Rakin, M.. (2020). Life cycle assessment of wood chips supply chain in Serbia. in Renewable Energy
Pergamon-Elsevier Science Ltd, Oxford., 155, 1302-1311.
https://doi.org/10.1016/j.renene.2020.04.026

Perić M, Antonijević D, Komatina M, Bugarski B, Rakin M. Life cycle assessment of wood chips supply chain in Serbia. in Renewable Energy. 2020;155:1302-1311.
doi:10.1016/j.renene.2020.04.026 .

Perić, Milica, Antonijević, Dragi, Komatina, Mirko, Bugarski, Branko, Rakin, Marko, "Life cycle assessment of wood chips supply chain in Serbia" in Renewable Energy, 155 (2020):1302-1311,
https://doi.org/10.1016/j.renene.2020.04.026 . .

TY  - JOUR
AU  - Perić, Milica
AU  - Komatina, Mirko
AU  - Antonijević, Dragi
AU  - Bugarski, Branko
AU  - Dzeletović, Željko S.
PY  - 2019
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3152
AB  - In this paper "well-to-pump" environmental analysis of pyrolytic diesel from Miscanthus gigantheus is performed. The average annual yield of Miscanthus from III-V year of cultivation on 1 ha of chernozem soil in Serbia (23.5 t) is considered as an input for the process. Two pyrolytic diesel pathways are considered: distributed pyrolytic pathway with external hydrogen production (from natural gas) and integrated pyrolytic pathway with internal hydrogen production (from pyrolytic oil). and are compared to a conventionally produced diesel pathway. The results of the analysis reveal that integrated-internal pyrolytic diesel pathway has lowest resources consumption and lowest pollutant emissions. Compared to conventionally produced diesel, integrated-internal pyrolysis pathway consumes 80% less of fossil fuels, and 92% more of renewables, has 90% lower global warming potential, 30% lower terrestrial acidification potential but 38% higher particulate matter formation potential. Compared to the distributed-external pathway, 88% less fossil fuels, and 36% less renewables are consumed in the integrated-internal pathway, global warming potential is 97% lower, terrestrial acidification is 20% lower, and particulate matter formation is 49% lower. Nevertheless, this pathway has high coal and hydroelectrical power consumption due to electricity production and high emissions of particulate matter, CO2, SOx, and N2O. Another drawback of this production pathway is the low yield of diesel obtained (38% lower than in distributed-external pathway). With this regard, it is still hard to designate production of diesel from fast pyrolysis of Miscanthus as a more environmentally friendly replacement of the conventional production diesel pathway.
PB  - Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd
T2  - Thermal Science
T1  - Diesel production by fast pyrolysis of miscanthus giganteus, well-to-pump analysis using the greet model
EP  - 378
IS  - 1
SP  - 365
VL  - 23
DO  - 10.2298/TSCI171215113P
ER  - 

@article{
author = "Perić, Milica and Komatina, Mirko and Antonijević, Dragi and Bugarski, Branko and Dzeletović, Željko S.",
year = "2019",
abstract = "In this paper "well-to-pump" environmental analysis of pyrolytic diesel from Miscanthus gigantheus is performed. The average annual yield of Miscanthus from III-V year of cultivation on 1 ha of chernozem soil in Serbia (23.5 t) is considered as an input for the process. Two pyrolytic diesel pathways are considered: distributed pyrolytic pathway with external hydrogen production (from natural gas) and integrated pyrolytic pathway with internal hydrogen production (from pyrolytic oil). and are compared to a conventionally produced diesel pathway. The results of the analysis reveal that integrated-internal pyrolytic diesel pathway has lowest resources consumption and lowest pollutant emissions. Compared to conventionally produced diesel, integrated-internal pyrolysis pathway consumes 80% less of fossil fuels, and 92% more of renewables, has 90% lower global warming potential, 30% lower terrestrial acidification potential but 38% higher particulate matter formation potential. Compared to the distributed-external pathway, 88% less fossil fuels, and 36% less renewables are consumed in the integrated-internal pathway, global warming potential is 97% lower, terrestrial acidification is 20% lower, and particulate matter formation is 49% lower. Nevertheless, this pathway has high coal and hydroelectrical power consumption due to electricity production and high emissions of particulate matter, CO2, SOx, and N2O. Another drawback of this production pathway is the low yield of diesel obtained (38% lower than in distributed-external pathway). With this regard, it is still hard to designate production of diesel from fast pyrolysis of Miscanthus as a more environmentally friendly replacement of the conventional production diesel pathway.",
publisher = "Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd",
journal = "Thermal Science",
title = "Diesel production by fast pyrolysis of miscanthus giganteus, well-to-pump analysis using the greet model",
pages = "378-365",
number = "1",
volume = "23",
doi = "10.2298/TSCI171215113P"
}

Perić, M., Komatina, M., Antonijević, D., Bugarski, B.,& Dzeletović, Ž. S.. (2019). Diesel production by fast pyrolysis of miscanthus giganteus, well-to-pump analysis using the greet model. in Thermal Science
Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd., 23(1), 365-378.
https://doi.org/10.2298/TSCI171215113P

Perić M, Komatina M, Antonijević D, Bugarski B, Dzeletović ŽS. Diesel production by fast pyrolysis of miscanthus giganteus, well-to-pump analysis using the greet model. in Thermal Science. 2019;23(1):365-378.
doi:10.2298/TSCI171215113P .

Perić, Milica, Komatina, Mirko, Antonijević, Dragi, Bugarski, Branko, Dzeletović, Željko S., "Diesel production by fast pyrolysis of miscanthus giganteus, well-to-pump analysis using the greet model" in Thermal Science, 23, no. 1 (2019):365-378,
https://doi.org/10.2298/TSCI171215113P . .

TY  - JOUR
AU  - Manić, Dimitrije
AU  - Komatina, Mirko
AU  - Vučićević, Biljana
AU  - Jovanović, Marina P.
PY  - 2019
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3121
AB  - Energy certification of buildings in Serbia was introduced in 2011 and energy label depends on energy need for heating per unit floor area of heated space, calculated by the fully prescribed monthly quasi-steady-state method defined by ISO 13790. In the Republic of Serbia, most of families live in single-family houses built before the energy certification of buildings was introduced. Therefore, the estimation of energy performance of the existing buildings is important for labeling, and evaluation of energy saving measures and energy strategies to be implemented. This paper examines the applicability of monthly method defined by National legislation on the existing buildings stock in Serbia, by comparing it to the more accurate dynamic simulation method. Typical single-family houses are taken as a test case, since they are responsible for about 76% of energy consumption for heating. The results show that the dynamic simulation method estimates 21% to 54% higher energy need for heating, compared to the monthly method. Also, the monthly method estimates up to 13% higher savings by typical building envelope energy saving measures, compared to the dynamic simulation. This paper recommends improvement in procedures for calculation of building energy performance index to better assess energy consumption, effects of energy saving measures, and create solid background for developing and implementing of energy saving strategies.
PB  - Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd
T2  - Thermal Science
T1  - Energy performance of single family houses in Serbia analzsis of calculation procedures
EP  - S1705
SP  - S1695
VL  - 23
DO  - 10.2298/TSCI180726073M
ER  - 

@article{
author = "Manić, Dimitrije and Komatina, Mirko and Vučićević, Biljana and Jovanović, Marina P.",
year = "2019",
abstract = "Energy certification of buildings in Serbia was introduced in 2011 and energy label depends on energy need for heating per unit floor area of heated space, calculated by the fully prescribed monthly quasi-steady-state method defined by ISO 13790. In the Republic of Serbia, most of families live in single-family houses built before the energy certification of buildings was introduced. Therefore, the estimation of energy performance of the existing buildings is important for labeling, and evaluation of energy saving measures and energy strategies to be implemented. This paper examines the applicability of monthly method defined by National legislation on the existing buildings stock in Serbia, by comparing it to the more accurate dynamic simulation method. Typical single-family houses are taken as a test case, since they are responsible for about 76% of energy consumption for heating. The results show that the dynamic simulation method estimates 21% to 54% higher energy need for heating, compared to the monthly method. Also, the monthly method estimates up to 13% higher savings by typical building envelope energy saving measures, compared to the dynamic simulation. This paper recommends improvement in procedures for calculation of building energy performance index to better assess energy consumption, effects of energy saving measures, and create solid background for developing and implementing of energy saving strategies.",
publisher = "Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd",
journal = "Thermal Science",
title = "Energy performance of single family houses in Serbia analzsis of calculation procedures",
pages = "S1705-S1695",
volume = "23",
doi = "10.2298/TSCI180726073M"
}

Manić, D., Komatina, M., Vučićević, B.,& Jovanović, M. P.. (2019). Energy performance of single family houses in Serbia analzsis of calculation procedures. in Thermal Science
Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd., 23, S1695-S1705.
https://doi.org/10.2298/TSCI180726073M

Manić D, Komatina M, Vučićević B, Jovanović MP. Energy performance of single family houses in Serbia analzsis of calculation procedures. in Thermal Science. 2019;23:S1695-S1705.
doi:10.2298/TSCI180726073M .

Manić, Dimitrije, Komatina, Mirko, Vučićević, Biljana, Jovanović, Marina P., "Energy performance of single family houses in Serbia analzsis of calculation procedures" in Thermal Science, 23 (2019):S1695-S1705,
https://doi.org/10.2298/TSCI180726073M . .

TY  - JOUR
AU  - Erić, Aleksandar M.
AU  - Nemoda, Stevan
AU  - Komatina, Mirko
AU  - Repić, Branislav
AU  - Dakić, Dragoljub
PY  - 2019
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3074
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.
PB  - Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd
T2  - Thermal Science
T1  - Modeling of transport processes in the cigarette principle combustion furnace
EP  - S1510
SP  - S1499
VL  - 23
DO  - 10.2298/TSCI180226318E
ER  - 

@article{
author = "Erić, Aleksandar M. and Nemoda, Stevan and Komatina, Mirko and Repić, Branislav and Dakić, 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.",
publisher = "Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd",
journal = "Thermal Science",
title = "Modeling of transport processes in the cigarette principle combustion furnace",
pages = "S1510-S1499",
volume = "23",
doi = "10.2298/TSCI180226318E"
}

Erić, A. M., Nemoda, S., Komatina, M., Repić, B.,& Dakić, D.. (2019). Modeling of transport processes in the cigarette principle combustion furnace. in Thermal Science
Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd., 23, S1499-S1510.
https://doi.org/10.2298/TSCI180226318E

Erić AM, Nemoda S, Komatina M, Repić B, Dakić D. Modeling of transport processes in the cigarette principle combustion furnace. in Thermal Science. 2019;23:S1499-S1510.
doi:10.2298/TSCI180226318E .

Erić, Aleksandar M., Nemoda, Stevan, Komatina, Mirko, Repić, Branislav, Dakić, Dragoljub, "Modeling of transport processes in the cigarette principle combustion furnace" in Thermal Science, 23 (2019):S1499-S1510,
https://doi.org/10.2298/TSCI180226318E . .

TY  - JOUR
AU  - Erić, Aleksandar
AU  - Nemoda, Stevan
AU  - Komatina, Mirko
AU  - Dakić, Dragoljub
AU  - Repić, Branislav
PY  - 2019
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3016
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.
PB  - Elsevier Sci Ltd, Oxford
T2  - Journal of The Energy Institute
T1  - Experimental investigation on the kinetics of biomass combustion in vertical tube reactor
EP  - 1090
IS  - 4
SP  - 1077
VL  - 92
DO  - 10.1016/j.joei.2018.06.009
ER  - 

@article{
author = "Erić, Aleksandar and Nemoda, Stevan and Komatina, Mirko and Dakić, Dragoljub 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.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Journal of The Energy Institute",
title = "Experimental investigation on the kinetics of biomass combustion in vertical tube reactor",
pages = "1090-1077",
number = "4",
volume = "92",
doi = "10.1016/j.joei.2018.06.009"
}

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

Erić A, Nemoda S, Komatina M, Dakić D, 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, Dakić, Dragoljub, 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  - GEN
AU  - Milanović, Mihailo
AU  - Zlatanović, Ivan
AU  - Komatina, Mirko
AU  - Dražić, Milan
AU  - Gligorević, Kosta
AU  - Rudonja, Nedžad
AU  - Pajić, Miloš
AU  - Živković, Milovan
PY  - 2018
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/5366
AB  - U radu je objašnjen postupak merenja temperature i određivanja toplotnih gubitaka ekperimentalne sušare u cilju povećanja energetske efikasnosti. Merena je spoljašnja temperatura sušare kako bi se utvrdili gubici toplote i potencijali za uštedu energije postavljanjem termoizolacije. Eksperimentalna sušara je podeljena u 15 sekcija na kojima je merena površinska temperatura u toku rada sušare pri vrednostima temperature vazduha koji cirkuliše kroz sušaru 50, 60 i 70 oC. Ustanovljeno je da sekcija grejača ima najviše specifične gubitke toplote, te da bi se postavljanjem termoizolacije na tom delu sušare postigle značajne uštede energije. Time je opravdano postavljanje termoizolacije na sekciju grejača i povećana energetska efikasnost sušare.
PB  - University of Belgrade, Faculty of Agriculture, The Institute for Agricultural Engineering
T2  - 19th Scientific conference „Current problems and tendecies in agricultural engineering“, Proceedings
T1  - Analysis of the influence of thermal insulation of the heater section of tunnel convective dryer on work parameters, energy efficiency and economy
EP  - 70
SP  - 63
UR  - https://hdl.handle.net/21.15107/rcub_machinery_5366
ER  - 

@misc{
author = "Milanović, Mihailo and Zlatanović, Ivan and Komatina, Mirko and Dražić, Milan and Gligorević, Kosta and Rudonja, Nedžad and Pajić, Miloš and Živković, Milovan",
year = "2018",
abstract = "U radu je objašnjen postupak merenja temperature i određivanja toplotnih gubitaka ekperimentalne sušare u cilju povećanja energetske efikasnosti. Merena je spoljašnja temperatura sušare kako bi se utvrdili gubici toplote i potencijali za uštedu energije postavljanjem termoizolacije. Eksperimentalna sušara je podeljena u 15 sekcija na kojima je merena površinska temperatura u toku rada sušare pri vrednostima temperature vazduha koji cirkuliše kroz sušaru 50, 60 i 70 oC. Ustanovljeno je da sekcija grejača ima najviše specifične gubitke toplote, te da bi se postavljanjem termoizolacije na tom delu sušare postigle značajne uštede energije. Time je opravdano postavljanje termoizolacije na sekciju grejača i povećana energetska efikasnost sušare.",
publisher = "University of Belgrade, Faculty of Agriculture, The Institute for Agricultural Engineering",
journal = "19th Scientific conference „Current problems and tendecies in agricultural engineering“, Proceedings",
title = "Analysis of the influence of thermal insulation of the heater section of tunnel convective dryer on work parameters, energy efficiency and economy",
pages = "70-63",
url = "https://hdl.handle.net/21.15107/rcub_machinery_5366"
}

Milanović, M., Zlatanović, I., Komatina, M., Dražić, M., Gligorević, K., Rudonja, N., Pajić, M.,& Živković, M.. (2018). Analysis of the influence of thermal insulation of the heater section of tunnel convective dryer on work parameters, energy efficiency and economy. in 19th Scientific conference „Current problems and tendecies in agricultural engineering“, Proceedings
University of Belgrade, Faculty of Agriculture, The Institute for Agricultural Engineering., 63-70.
https://hdl.handle.net/21.15107/rcub_machinery_5366

Milanović M, Zlatanović I, Komatina M, Dražić M, Gligorević K, Rudonja N, Pajić M, Živković M. Analysis of the influence of thermal insulation of the heater section of tunnel convective dryer on work parameters, energy efficiency and economy. in 19th Scientific conference „Current problems and tendecies in agricultural engineering“, Proceedings. 2018;:63-70.
https://hdl.handle.net/21.15107/rcub_machinery_5366 .

Milanović, Mihailo, Zlatanović, Ivan, Komatina, Mirko, Dražić, Milan, Gligorević, Kosta, Rudonja, Nedžad, Pajić, Miloš, Živković, Milovan, "Analysis of the influence of thermal insulation of the heater section of tunnel convective dryer on work parameters, energy efficiency and economy" in 19th Scientific conference „Current problems and tendecies in agricultural engineering“, Proceedings (2018):63-70,
https://hdl.handle.net/21.15107/rcub_machinery_5366 .

TY  - JOUR
AU  - Perić, Milica
AU  - Komatina, Mirko
AU  - Antonijević, Dragi
AU  - Bugarski, Branko
AU  - Dzeletović, Željko
PY  - 2018
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/2872
AB  - This paper investigates the environmental impacts and energy benefits of the cultivation of Miscanthus (Miscanthus x giganteus Greef et Deu.), in order to initiate its use in sustainable household heating in the Republic of Serbia. Based on the analysis of available data regarding the use of agricultural machinery in Serbia, a Miscanthus supply chain is constructed and examined in detail, scrutinizing all relevant operationsfrom planting of rhizomes to thermal energy production. Results of the life cycle assessment identify the briquetting process as the most environmentally burdensome operation due to high electricity consumption and low productivity. It is concluded that an average yield of 23.5 t dry matter (d.m.) year(-1) obtained from 1 ha of chernozem soil would have energy output:energy input (EO:EI) ratio of 51:1, and would release 365.5 gigajoules (GJ) of heat during combustion in a boiler. With this amount of energy, around 383 m(2) of a free-standing family house in Serbia can be heated annually. The same amount of energy is obtained by the combustion of 22 t of lignite or 23 t of wood logs. The substitution of lignite and wood with Miscanthus briquettes would lead to significant reduction of CO2 equivalents (eq), SO2 eq, P eq, N eq, 1,4 dichlorobenzene (1,4-DB) eq, Non-methane volatile organic compound (NMVOC), PM10 eq and U235 eq emissions. This designates Miscanthus as a more sustainable energy solution for household heating. In instances where more modern agricultural machinery is used, emission reduction is higher, except for CO2 eq due to higher emission factors predicted for more powerful engines. Depending on Miscanthus' annual yield, the replacement of set-aside land with Miscanthus plantations result in carbon (C) sequestration from 0.08 t C ha(-1) year(-1) to 0.91 t C ha(-1) year(-1). In a modern machinery scenario, C sequestration is only attainable when maximal Miscanthus yield is obtained. The combined use of machinery with different engine power is the best option for Miscanthus cultivation in Serbia.
PB  - MDPI, Basel
T2  - Forests
T1  - Life Cycle Impact Assessment of Miscanthus Crop for Sustainable Household Heating in Serbia
IS  - 10
VL  - 9
DO  - 10.3390/f9100654
ER  - 

@article{
author = "Perić, Milica and Komatina, Mirko and Antonijević, Dragi and Bugarski, Branko and Dzeletović, Željko",
year = "2018",
abstract = "This paper investigates the environmental impacts and energy benefits of the cultivation of Miscanthus (Miscanthus x giganteus Greef et Deu.), in order to initiate its use in sustainable household heating in the Republic of Serbia. Based on the analysis of available data regarding the use of agricultural machinery in Serbia, a Miscanthus supply chain is constructed and examined in detail, scrutinizing all relevant operationsfrom planting of rhizomes to thermal energy production. Results of the life cycle assessment identify the briquetting process as the most environmentally burdensome operation due to high electricity consumption and low productivity. It is concluded that an average yield of 23.5 t dry matter (d.m.) year(-1) obtained from 1 ha of chernozem soil would have energy output:energy input (EO:EI) ratio of 51:1, and would release 365.5 gigajoules (GJ) of heat during combustion in a boiler. With this amount of energy, around 383 m(2) of a free-standing family house in Serbia can be heated annually. The same amount of energy is obtained by the combustion of 22 t of lignite or 23 t of wood logs. The substitution of lignite and wood with Miscanthus briquettes would lead to significant reduction of CO2 equivalents (eq), SO2 eq, P eq, N eq, 1,4 dichlorobenzene (1,4-DB) eq, Non-methane volatile organic compound (NMVOC), PM10 eq and U235 eq emissions. This designates Miscanthus as a more sustainable energy solution for household heating. In instances where more modern agricultural machinery is used, emission reduction is higher, except for CO2 eq due to higher emission factors predicted for more powerful engines. Depending on Miscanthus' annual yield, the replacement of set-aside land with Miscanthus plantations result in carbon (C) sequestration from 0.08 t C ha(-1) year(-1) to 0.91 t C ha(-1) year(-1). In a modern machinery scenario, C sequestration is only attainable when maximal Miscanthus yield is obtained. The combined use of machinery with different engine power is the best option for Miscanthus cultivation in Serbia.",
publisher = "MDPI, Basel",
journal = "Forests",
title = "Life Cycle Impact Assessment of Miscanthus Crop for Sustainable Household Heating in Serbia",
number = "10",
volume = "9",
doi = "10.3390/f9100654"
}

Perić, M., Komatina, M., Antonijević, D., Bugarski, B.,& Dzeletović, Ž.. (2018). Life Cycle Impact Assessment of Miscanthus Crop for Sustainable Household Heating in Serbia. in Forests
MDPI, Basel., 9(10).
https://doi.org/10.3390/f9100654

Perić M, Komatina M, Antonijević D, Bugarski B, Dzeletović Ž. Life Cycle Impact Assessment of Miscanthus Crop for Sustainable Household Heating in Serbia. in Forests. 2018;9(10).
doi:10.3390/f9100654 .

Perić, Milica, Komatina, Mirko, Antonijević, Dragi, Bugarski, Branko, Dzeletović, Željko, "Life Cycle Impact Assessment of Miscanthus Crop for Sustainable Household Heating in Serbia" in Forests, 9, no. 10 (2018),
https://doi.org/10.3390/f9100654 . .

TY  - JOUR
AU  - Lalošević, Marija
AU  - Komatina, Mirko
AU  - Miloš, Marko
AU  - Rudonja, Nedžad
PY  - 2018
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/2790
AB  - The effect of extensive and intensive green roofs on improving outdoor microclimate parameters of urban built environments is currently a worldwide focus of research. Due to the lack of reliable data for Belgrade, the impact of extensive and intensive green roof systems on mitigating the effects of urban heat islands and improving microclimatic conditions by utilizing high albedo materials in public spaces were studied. Research was conducted on four chosen urban units within existing residential blocks in the city that were representative of typical urban planning and construction within the Belgrade metropolitan area. Five different models (baseline model and four potential models of retrofitting) were designed, for which the temperature changes at pedestrian and roof levels at 07:00, 13:00, 19:00 h, on a typical summer day, and at 01:00 h, the following night in Belgrade were investigated. The ENVI-met software was used to model the simulations. The results of numerical modeling showed that utilizing green roofs in the Belgrade climatic area could reduce air temperatures in the surroundings up to 0.47, 1.51, 1.60, 1.80 degrees C at pedestrian level and up to 0.53, 1.45, 0.90, 1.45 degrees C at roof level for four potential retrofitting strategies, respectively.
PB  - Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd
T2  - Thermal Science
T1  - Green roofs and cool materials as retrofitting strategies for urban heat island mitigation case study in Belgrade, Serbia
EP  - 2324
IS  - 6
SP  - 2309
VL  - 22
DO  - 10.2298/TSCI171120086L
ER  - 

@article{
author = "Lalošević, Marija and Komatina, Mirko and Miloš, Marko and Rudonja, Nedžad",
year = "2018",
abstract = "The effect of extensive and intensive green roofs on improving outdoor microclimate parameters of urban built environments is currently a worldwide focus of research. Due to the lack of reliable data for Belgrade, the impact of extensive and intensive green roof systems on mitigating the effects of urban heat islands and improving microclimatic conditions by utilizing high albedo materials in public spaces were studied. Research was conducted on four chosen urban units within existing residential blocks in the city that were representative of typical urban planning and construction within the Belgrade metropolitan area. Five different models (baseline model and four potential models of retrofitting) were designed, for which the temperature changes at pedestrian and roof levels at 07:00, 13:00, 19:00 h, on a typical summer day, and at 01:00 h, the following night in Belgrade were investigated. The ENVI-met software was used to model the simulations. The results of numerical modeling showed that utilizing green roofs in the Belgrade climatic area could reduce air temperatures in the surroundings up to 0.47, 1.51, 1.60, 1.80 degrees C at pedestrian level and up to 0.53, 1.45, 0.90, 1.45 degrees C at roof level for four potential retrofitting strategies, respectively.",
publisher = "Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd",
journal = "Thermal Science",
title = "Green roofs and cool materials as retrofitting strategies for urban heat island mitigation case study in Belgrade, Serbia",
pages = "2324-2309",
number = "6",
volume = "22",
doi = "10.2298/TSCI171120086L"
}

Lalošević, M., Komatina, M., Miloš, M.,& Rudonja, N.. (2018). Green roofs and cool materials as retrofitting strategies for urban heat island mitigation case study in Belgrade, Serbia. in Thermal Science
Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd., 22(6), 2309-2324.
https://doi.org/10.2298/TSCI171120086L

Lalošević M, Komatina M, Miloš M, Rudonja N. Green roofs and cool materials as retrofitting strategies for urban heat island mitigation case study in Belgrade, Serbia. in Thermal Science. 2018;22(6):2309-2324.
doi:10.2298/TSCI171120086L .

Lalošević, Marija, Komatina, Mirko, Miloš, Marko, Rudonja, Nedžad, "Green roofs and cool materials as retrofitting strategies for urban heat island mitigation case study in Belgrade, Serbia" in Thermal Science, 22, no. 6 (2018):2309-2324,
https://doi.org/10.2298/TSCI171120086L . .

TY  - JOUR
AU  - Erić, Aleksandar
AU  - Nemoda, Stevan
AU  - Komatina, Mirko
AU  - Repić, Branislav
PY  - 2018
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/2770
AB  - Poslednjih godina primena gasifikacije biomase, kao alternativa direktnom sagorevanju komercijalnog goriva, privuklo je pažnju pre svega s ciljem smanjenja emisija CO2, NOx i SOx. Osim toga, energetski sistemi za gasifikaciju biomase, na bazi paecijalne oksidacije (PTOX), su obnovljivi i održivi, efikasni i ekonomični, pogodni i sigurni. Zbog toga je poželjno obaviti detaljno istraživanje termo-fizičkih procesa u reaktorima za PTOX gasifikaciju biomase. Pored eksperimentalnog istraživanja ovih procesa, matematički modeli transportnih fenomena igraju značajnu ulogu. Istraživanje procesa gasifikacije biomase na bazi matematičkih modela je u prednosti kad se uzme u obzir mogućnost dobijanja informacija vrlo brzo, kao i dobijanje vrlo detaljnih podataka pri idealnim uslovima odvijanja procesa. Da bi se utvrdili optimalni uslovi za dobijanje maksimalne proizvodnje proizvoda gasifikacije CO, H2 i CH4, razvijen je matematički model ovog procesa. Verifikacija modela izvedena je nizom eksperimenata na gasifikatoru sa fluidizovanim slojem u podstehiometrijskom toku vazduha. U tu svrhu korišćene su četiri vrste biomase: bukva, hrast, kukuruz i seme pšenice. U ovom radu prikazani su rezultati eksperimentalnog istraživanja procesa gasifikacije oklaska kukuruza i drveta, kao lako dostupnih i obnovljivih domaćih goriva. Merenja su obavljena u pilot reaktoru sa fluidizovanim slojem. Cilj istraživanja je određivanje sastava produkta gasifikacije biomase i bliže upoznavanje sa prirodom ovog procesa.
AB  - In recent years the use of direct combustion of biomass and fuels from biomass gasification have attracted attention, primarily with the aim to reduce CO2, NOX and SOX emissions. In addition, the biomass air-gasification energy systems are renewable and sustainable, efficient and cost-effective, convenient and safe. For that reason, the detailed research of thermo-physical processes in biomass air TPOX gasification reactors is of great interest. Beside the experimental investigation of these processes, mathematical models of transport phenomena play a significant role. The investigation of the biomass gasification processes based on mathematical models is helpful, due possibility to get information very fast, as well as to the ability to model ideal conditions. In order to determine optimal conditions for obtaining maximum production of gasification products CO, H2 and CH4, a mathematical model of this process has been developed. The model verification was performed by a series of experiments on a fluidized bed gasifier in the sub-stoichiometric air stream. For this purpose, four types of biomass were used: beech, oak, corn-cob and wheat seed. This paper presents the experimental research results of the gasification process of corn cob and wood, as easily accessible and renewable domestic fuels. Measurements were performed in a fluidized bed pilot reactor. The aim of the research is to determine the composition of the biomass gasification products and to become familiar with the nature of this process.
PB  - Nacionalno naučno društvo za poljoprivrednu tehniku, Novi Sad
T2  - Savremena poljoprivredna tehnika
T1  - Ispitivanje procesa gasifikacije biomase u eksperimentalnom reaktoru sa fluidizovanim slojem
T1  - Investigation of biomass gasification in an experimental reactor with a fluidized bed
EP  - 28
IS  - 1
SP  - 21
VL  - 44
DO  - 10.5937/SavPoljTeh1801021E
ER  - 

@article{
author = "Erić, Aleksandar and Nemoda, Stevan and Komatina, Mirko and Repić, Branislav",
year = "2018",
abstract = "Poslednjih godina primena gasifikacije biomase, kao alternativa direktnom sagorevanju komercijalnog goriva, privuklo je pažnju pre svega s ciljem smanjenja emisija CO2, NOx i SOx. Osim toga, energetski sistemi za gasifikaciju biomase, na bazi paecijalne oksidacije (PTOX), su obnovljivi i održivi, efikasni i ekonomični, pogodni i sigurni. Zbog toga je poželjno obaviti detaljno istraživanje termo-fizičkih procesa u reaktorima za PTOX gasifikaciju biomase. Pored eksperimentalnog istraživanja ovih procesa, matematički modeli transportnih fenomena igraju značajnu ulogu. Istraživanje procesa gasifikacije biomase na bazi matematičkih modela je u prednosti kad se uzme u obzir mogućnost dobijanja informacija vrlo brzo, kao i dobijanje vrlo detaljnih podataka pri idealnim uslovima odvijanja procesa. Da bi se utvrdili optimalni uslovi za dobijanje maksimalne proizvodnje proizvoda gasifikacije CO, H2 i CH4, razvijen je matematički model ovog procesa. Verifikacija modela izvedena je nizom eksperimenata na gasifikatoru sa fluidizovanim slojem u podstehiometrijskom toku vazduha. U tu svrhu korišćene su četiri vrste biomase: bukva, hrast, kukuruz i seme pšenice. U ovom radu prikazani su rezultati eksperimentalnog istraživanja procesa gasifikacije oklaska kukuruza i drveta, kao lako dostupnih i obnovljivih domaćih goriva. Merenja su obavljena u pilot reaktoru sa fluidizovanim slojem. Cilj istraživanja je određivanje sastava produkta gasifikacije biomase i bliže upoznavanje sa prirodom ovog procesa., In recent years the use of direct combustion of biomass and fuels from biomass gasification have attracted attention, primarily with the aim to reduce CO2, NOX and SOX emissions. In addition, the biomass air-gasification energy systems are renewable and sustainable, efficient and cost-effective, convenient and safe. For that reason, the detailed research of thermo-physical processes in biomass air TPOX gasification reactors is of great interest. Beside the experimental investigation of these processes, mathematical models of transport phenomena play a significant role. The investigation of the biomass gasification processes based on mathematical models is helpful, due possibility to get information very fast, as well as to the ability to model ideal conditions. In order to determine optimal conditions for obtaining maximum production of gasification products CO, H2 and CH4, a mathematical model of this process has been developed. The model verification was performed by a series of experiments on a fluidized bed gasifier in the sub-stoichiometric air stream. For this purpose, four types of biomass were used: beech, oak, corn-cob and wheat seed. This paper presents the experimental research results of the gasification process of corn cob and wood, as easily accessible and renewable domestic fuels. Measurements were performed in a fluidized bed pilot reactor. The aim of the research is to determine the composition of the biomass gasification products and to become familiar with the nature of this process.",
publisher = "Nacionalno naučno društvo za poljoprivrednu tehniku, Novi Sad",
journal = "Savremena poljoprivredna tehnika",
title = "Ispitivanje procesa gasifikacije biomase u eksperimentalnom reaktoru sa fluidizovanim slojem, Investigation of biomass gasification in an experimental reactor with a fluidized bed",
pages = "28-21",
number = "1",
volume = "44",
doi = "10.5937/SavPoljTeh1801021E"
}

Erić, A., Nemoda, S., Komatina, M.,& Repić, B.. (2018). Ispitivanje procesa gasifikacije biomase u eksperimentalnom reaktoru sa fluidizovanim slojem. in Savremena poljoprivredna tehnika
Nacionalno naučno društvo za poljoprivrednu tehniku, Novi Sad., 44(1), 21-28.
https://doi.org/10.5937/SavPoljTeh1801021E

Erić A, Nemoda S, Komatina M, Repić B. Ispitivanje procesa gasifikacije biomase u eksperimentalnom reaktoru sa fluidizovanim slojem. in Savremena poljoprivredna tehnika. 2018;44(1):21-28.
doi:10.5937/SavPoljTeh1801021E .

Erić, Aleksandar, Nemoda, Stevan, Komatina, Mirko, Repić, Branislav, "Ispitivanje procesa gasifikacije biomase u eksperimentalnom reaktoru sa fluidizovanim slojem" in Savremena poljoprivredna tehnika, 44, no. 1 (2018):21-28,
https://doi.org/10.5937/SavPoljTeh1801021E . .

TY  - JOUR
AU  - Lalošević, Marija
AU  - Komatina, Mirko
AU  - Živković, Branislav
AU  - Miloš, Marko
PY  - 2018
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/2951
AB  - This paper presents the results on reducing CO2 concentration with green roofs implementation in a densely populated urban area in Belgrade city centre. The buildings on which green roofs are implemented have an average height of 15 meters. In order to investigate the impact of existing residential urban blocks and potential retrofitting model on CO2 concentration, base model was designed (the model fully complied with the actual status and real conditions in the location) as well as retrofitting models (which present base model with added elements of extensive and intensive green roofs) and numerical simulations of CO2 concentrations for all presented models were done. Differences in CO2 concentrations at height of 1.5 m (pedestrian level), 7.5 m and 17.5 m at 7 am and 7 pm, on a typical summer day in Belgrade were investigated. ENVI-met software was used to perform the simulations. The resultant data of numerical simulation showed that utilizing the green roofs instead of classical flat roofs in Belgrade climatic area could reduce atmospheric concentration of CO2 around the building up to 11%, average 2.3%. By using proposed strategy, it is demonstrated that applying vegetative roofs could be valuable instrument for noteworthy contribution to environmental protection in Belgrade and for climate change mitigation, both local and global.
PB  - Bulgarian Academy of Sciences
T2  - Bulgarian Chemical Communications
T1  - Reducing CO2 concentration in city centres with green roofs implementation: Case study Belgrade, Serbia
EP  - 119
SP  - 111
VL  - 50
UR  - https://hdl.handle.net/21.15107/rcub_machinery_2951
ER  - 

@article{
author = "Lalošević, Marija and Komatina, Mirko and Živković, Branislav and Miloš, Marko",
year = "2018",
abstract = "This paper presents the results on reducing CO2 concentration with green roofs implementation in a densely populated urban area in Belgrade city centre. The buildings on which green roofs are implemented have an average height of 15 meters. In order to investigate the impact of existing residential urban blocks and potential retrofitting model on CO2 concentration, base model was designed (the model fully complied with the actual status and real conditions in the location) as well as retrofitting models (which present base model with added elements of extensive and intensive green roofs) and numerical simulations of CO2 concentrations for all presented models were done. Differences in CO2 concentrations at height of 1.5 m (pedestrian level), 7.5 m and 17.5 m at 7 am and 7 pm, on a typical summer day in Belgrade were investigated. ENVI-met software was used to perform the simulations. The resultant data of numerical simulation showed that utilizing the green roofs instead of classical flat roofs in Belgrade climatic area could reduce atmospheric concentration of CO2 around the building up to 11%, average 2.3%. By using proposed strategy, it is demonstrated that applying vegetative roofs could be valuable instrument for noteworthy contribution to environmental protection in Belgrade and for climate change mitigation, both local and global.",
publisher = "Bulgarian Academy of Sciences",
journal = "Bulgarian Chemical Communications",
title = "Reducing CO2 concentration in city centres with green roofs implementation: Case study Belgrade, Serbia",
pages = "119-111",
volume = "50",
url = "https://hdl.handle.net/21.15107/rcub_machinery_2951"
}

Lalošević, M., Komatina, M., Živković, B.,& Miloš, M.. (2018). Reducing CO2 concentration in city centres with green roofs implementation: Case study Belgrade, Serbia. in Bulgarian Chemical Communications
Bulgarian Academy of Sciences., 50, 111-119.
https://hdl.handle.net/21.15107/rcub_machinery_2951

Lalošević M, Komatina M, Živković B, Miloš M. Reducing CO2 concentration in city centres with green roofs implementation: Case study Belgrade, Serbia. in Bulgarian Chemical Communications. 2018;50:111-119.
https://hdl.handle.net/21.15107/rcub_machinery_2951 .

Lalošević, Marija, Komatina, Mirko, Živković, Branislav, Miloš, Marko, "Reducing CO2 concentration in city centres with green roofs implementation: Case study Belgrade, Serbia" in Bulgarian Chemical Communications, 50 (2018):111-119,
https://hdl.handle.net/21.15107/rcub_machinery_2951 .

TY  - JOUR
AU  - Erić, Aleksandar
AU  - Nemoda, Stevan
AU  - Komatina, Mirko
AU  - Dakić, Dragoljub
AU  - Repić, Branislav
PY  - 2017
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/2508
AB  - U cilju dobijanja pouzdanih rezultata o globalnoj kinetici procesa sagorevanja biomase u formi bala urađena je analiza eksperimentalnog određivanja kinetike sagorevanja rastresite biomase u vertikalnom cevnom reaktoru, sa praćenjem promene mase uzorka. Pretpostavljena su dva moguća načina sagorevanja balirane biomase (klipni i šaržni), za koje su postavljene odgovarajuće teorijske osnove. Analizom i poređenjem sa eksperimentalnim rezultatima izabran je klipni model sagorevanja, koji je pokazao najbolje slaganje sa eksperimentalnim rezultatima. Ovaj model sagorevanja korišćen je u daljim analizama uticaja viška vazduha na kinetiku sagorevanja, kao i uticaja recirkulacije na istu veličinu. Eksperimenti su obavljeni na posebno konstruisanoj i izrađenoj aparaturi, a u cilju dobijanja projektnih parametara kinetike sagorevanja različitih vrsta biomase. Rezultati pokazuju da količina vazduha utiče na globalnu kinetiku procesa sagorevanja. Ova zavisnost je potvrđena na dve vrste biomase pšeničnoj slami i kukuruzovini, koje predstavljaju najčešče korišćenu poljoprivrednu biomasu u energetske svrhe. Dobijeni rezultati su značajni prilikom izrade novih postrojenja koja rade po principu cigaretnog sagorevanja, kao i u procesu izrade matematičkih modela za numeričku simulaciju cigaretnog sagorevanja, sa posebnim osvrtom na uticaj recirkulacije na globalnu kinetiku.
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 excessair on the combustion kinetics. 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. Experiments were 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 'cigar' firing combustion system, but also for development of numerical models used to simulate combustion of biomass bales.
PB  - Nacionalno naučno društvo za poljoprivrednu tehniku, Novi Sad
T2  - Savremena poljoprivredna tehnika
T1  - Analiza i izbor metodologije za određivanje kinetike sagorevanja poljoprivredne biomase
T1  - Analysis and selection of methodology for determination of the agricultural biomas combustion kinetics
EP  - 140
IS  - 3
SP  - 131
VL  - 43
DO  - 10.5937/SavPoljTeh1703131E
ER  - 

@article{
author = "Erić, Aleksandar and Nemoda, Stevan and Komatina, Mirko and Dakić, Dragoljub and Repić, Branislav",
year = "2017",
abstract = "U cilju dobijanja pouzdanih rezultata o globalnoj kinetici procesa sagorevanja biomase u formi bala urađena je analiza eksperimentalnog određivanja kinetike sagorevanja rastresite biomase u vertikalnom cevnom reaktoru, sa praćenjem promene mase uzorka. Pretpostavljena su dva moguća načina sagorevanja balirane biomase (klipni i šaržni), za koje su postavljene odgovarajuće teorijske osnove. Analizom i poređenjem sa eksperimentalnim rezultatima izabran je klipni model sagorevanja, koji je pokazao najbolje slaganje sa eksperimentalnim rezultatima. Ovaj model sagorevanja korišćen je u daljim analizama uticaja viška vazduha na kinetiku sagorevanja, kao i uticaja recirkulacije na istu veličinu. Eksperimenti su obavljeni na posebno konstruisanoj i izrađenoj aparaturi, a u cilju dobijanja projektnih parametara kinetike sagorevanja različitih vrsta biomase. Rezultati pokazuju da količina vazduha utiče na globalnu kinetiku procesa sagorevanja. Ova zavisnost je potvrđena na dve vrste biomase pšeničnoj slami i kukuruzovini, koje predstavljaju najčešče korišćenu poljoprivrednu biomasu u energetske svrhe. Dobijeni rezultati su značajni prilikom izrade novih postrojenja koja rade po principu cigaretnog sagorevanja, kao i u procesu izrade matematičkih modela za numeričku simulaciju cigaretnog sagorevanja, sa posebnim osvrtom na uticaj recirkulacije na globalnu kinetiku., 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 excessair on the combustion kinetics. 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. Experiments were 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 'cigar' firing combustion system, but also for development of numerical models used to simulate combustion of biomass bales.",
publisher = "Nacionalno naučno društvo za poljoprivrednu tehniku, Novi Sad",
journal = "Savremena poljoprivredna tehnika",
title = "Analiza i izbor metodologije za određivanje kinetike sagorevanja poljoprivredne biomase, Analysis and selection of methodology for determination of the agricultural biomas combustion kinetics",
pages = "140-131",
number = "3",
volume = "43",
doi = "10.5937/SavPoljTeh1703131E"
}

Erić, A., Nemoda, S., Komatina, M., Dakić, D.,& Repić, B.. (2017). Analiza i izbor metodologije za određivanje kinetike sagorevanja poljoprivredne biomase. in Savremena poljoprivredna tehnika
Nacionalno naučno društvo za poljoprivrednu tehniku, Novi Sad., 43(3), 131-140.
https://doi.org/10.5937/SavPoljTeh1703131E

Erić A, Nemoda S, Komatina M, Dakić D, Repić B. Analiza i izbor metodologije za određivanje kinetike sagorevanja poljoprivredne biomase. in Savremena poljoprivredna tehnika. 2017;43(3):131-140.
doi:10.5937/SavPoljTeh1703131E .

Erić, Aleksandar, Nemoda, Stevan, Komatina, Mirko, Dakić, Dragoljub, Repić, Branislav, "Analiza i izbor metodologije za određivanje kinetike sagorevanja poljoprivredne biomase" in Savremena poljoprivredna tehnika, 43, no. 3 (2017):131-140,
https://doi.org/10.5937/SavPoljTeh1703131E . .

TY  - CONF
AU  - Rudonja, Nedžad
AU  - Komatina, Mirko
AU  - Paprika, Milijana J.
AU  - Jovanović, Vladimir
PY  - 2017
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4964
AB  - Due to their efficiency heat pumps have found great application in the
building industry, the process industry, in various technological processes in the
production of food, to the space technology system, etc. When heat pumps are coupled
to the energy management system which monitors and optimizes work parameters not
only of the heat pump but also work parameters of other systems, such as solar and
photovoltaic panels, thermal energy storages, electric batteries and the whole system, it
is necessary to have a mathematical model that with sufficient accuracy and without
great complexity estimates energy performance of the heat pump itself and the whole
energy system. In this article a relatively simple mathematical model of a heat pump,
with which it is possible to get values for the COP at any given time and under given
conditions, was given. The obtained results of the model, applied to the air-water heat
pump, used the input meteorological data of the mean air temperature for Belgrade,
were presented. The verification of the obtained results of the model was made by using
the catalogue data for the COP of the the Ecodan Monobloc Air Source Heat Pumps
manufactured by Mitsubishi Electric.
PB  - Univerzitet u Beogradu-Poljoprivredni fakultet
C3  - Proceedings of The Third International Symposium on Agricultural Engineering ISAE-2017
T1  - Аpproximate method for the estimation of energy performance of heat pumps connected to the system of energy management of facilities
EP  - III-31
SP  - III-25
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4964
ER  - 

@conference{
author = "Rudonja, Nedžad and Komatina, Mirko and Paprika, Milijana J. and Jovanović, Vladimir",
year = "2017",
abstract = "Due to their efficiency heat pumps have found great application in the
building industry, the process industry, in various technological processes in the
production of food, to the space technology system, etc. When heat pumps are coupled
to the energy management system which monitors and optimizes work parameters not
only of the heat pump but also work parameters of other systems, such as solar and
photovoltaic panels, thermal energy storages, electric batteries and the whole system, it
is necessary to have a mathematical model that with sufficient accuracy and without
great complexity estimates energy performance of the heat pump itself and the whole
energy system. In this article a relatively simple mathematical model of a heat pump,
with which it is possible to get values for the COP at any given time and under given
conditions, was given. The obtained results of the model, applied to the air-water heat
pump, used the input meteorological data of the mean air temperature for Belgrade,
were presented. The verification of the obtained results of the model was made by using
the catalogue data for the COP of the the Ecodan Monobloc Air Source Heat Pumps
manufactured by Mitsubishi Electric.",
publisher = "Univerzitet u Beogradu-Poljoprivredni fakultet",
journal = "Proceedings of The Third International Symposium on Agricultural Engineering ISAE-2017",
title = "Аpproximate method for the estimation of energy performance of heat pumps connected to the system of energy management of facilities",
pages = "III-31-III-25",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4964"
}

Rudonja, N., Komatina, M., Paprika, M. J.,& Jovanović, V.. (2017). Аpproximate method for the estimation of energy performance of heat pumps connected to the system of energy management of facilities. in Proceedings of The Third International Symposium on Agricultural Engineering ISAE-2017
Univerzitet u Beogradu-Poljoprivredni fakultet., III-25-III-31.
https://hdl.handle.net/21.15107/rcub_machinery_4964

Rudonja N, Komatina M, Paprika MJ, Jovanović V. Аpproximate method for the estimation of energy performance of heat pumps connected to the system of energy management of facilities. in Proceedings of The Third International Symposium on Agricultural Engineering ISAE-2017. 2017;:III-25-III-31.
https://hdl.handle.net/21.15107/rcub_machinery_4964 .

Rudonja, Nedžad, Komatina, Mirko, Paprika, Milijana J., Jovanović, Vladimir, "Аpproximate method for the estimation of energy performance of heat pumps connected to the system of energy management of facilities" in Proceedings of The Third International Symposium on Agricultural Engineering ISAE-2017 (2017):III-25-III-31,
https://hdl.handle.net/21.15107/rcub_machinery_4964 .

TY  - CONF
AU  - Milanović, Mihailo
AU  - Komatina, Mirko
AU  - Zlatanović, Ivan
PY  - 2017
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/5097
AB  - Apple pomace is one of the byproducts of the juice industry and represents a huge 
waste of biomass. According to many authors, the apple pomace comprises round 25% of 
overall mass of the fresh apples used in juice industry. Not only it represents a huge waste of 
useful material, but there is also an emerging problem of its disposal. In order to perceive 
all the benefits and possibilities of the apple pomace utilization, a review was needed to be 
written. This article describes the properties of the apple pomace and its potential uses. 
Furthermore, the drying process of apple pomace was reviewed as one of the best ways for 
preserving food and organic materials. The different drying methods and parameters of the 
apple pomace were reviewed.
PB  - University of Belgrade, Faculty of Agriculture, The Institute for Agricultural Engineering
C3  - The 3rd International Symposium on Agricultural Engineering ISAE-2017, Proceedings
T1  - Technical review on properties, utilization and drying of apple pomace
EP  - IV-18
SP  - IV-9
UR  - https://hdl.handle.net/21.15107/rcub_machinery_5097
ER  - 

@conference{
author = "Milanović, Mihailo and Komatina, Mirko and Zlatanović, Ivan",
year = "2017",
abstract = "Apple pomace is one of the byproducts of the juice industry and represents a huge 
waste of biomass. According to many authors, the apple pomace comprises round 25% of 
overall mass of the fresh apples used in juice industry. Not only it represents a huge waste of 
useful material, but there is also an emerging problem of its disposal. In order to perceive 
all the benefits and possibilities of the apple pomace utilization, a review was needed to be 
written. This article describes the properties of the apple pomace and its potential uses. 
Furthermore, the drying process of apple pomace was reviewed as one of the best ways for 
preserving food and organic materials. The different drying methods and parameters of the 
apple pomace were reviewed.",
publisher = "University of Belgrade, Faculty of Agriculture, The Institute for Agricultural Engineering",
journal = "The 3rd International Symposium on Agricultural Engineering ISAE-2017, Proceedings",
title = "Technical review on properties, utilization and drying of apple pomace",
pages = "IV-18-IV-9",
url = "https://hdl.handle.net/21.15107/rcub_machinery_5097"
}

Milanović, M., Komatina, M.,& Zlatanović, I.. (2017). Technical review on properties, utilization and drying of apple pomace. in The 3rd International Symposium on Agricultural Engineering ISAE-2017, Proceedings
University of Belgrade, Faculty of Agriculture, The Institute for Agricultural Engineering., IV-9-IV-18.
https://hdl.handle.net/21.15107/rcub_machinery_5097

Milanović M, Komatina M, Zlatanović I. Technical review on properties, utilization and drying of apple pomace. in The 3rd International Symposium on Agricultural Engineering ISAE-2017, Proceedings. 2017;:IV-9-IV-18.
https://hdl.handle.net/21.15107/rcub_machinery_5097 .

Milanović, Mihailo, Komatina, Mirko, Zlatanović, Ivan, "Technical review on properties, utilization and drying of apple pomace" in The 3rd International Symposium on Agricultural Engineering ISAE-2017, Proceedings (2017):IV-9-IV-18,
https://hdl.handle.net/21.15107/rcub_machinery_5097 .

TY  - JOUR
AU  - Zlatanović, Ivan
AU  - Komatina, Mirko
AU  - Antonijević, Dragi
PY  - 2017
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/2545
AB  - The paper presents results of an experimental investigation of convective drying of apples var. Idared, potatoes var. Desiree and bananas var. Grand Nein, in full recirculation laboratory-scale dryer. The experiments were conducted with cube-shaped apple samples (side length 10 and 13mm), potato chips (slice thickness 2 and 3mm) and banana cylinders (slice thickness 6 and 7mm), without pre-treatment. The drying experiment was conducted at fully controlled air temperature (35-45-55 degrees C), relative humidity (10-20-30%) and air velocity (1-1.5-2m/s). Results are discussed through their comparison with other heat pump drying system scenarios in order to find the most efficient one. The efficiency of the heat pump drying (HPD) system was analyzed using the several indicators: specific moisture extraction rate (SMER), specific energy consumption (SEC), heat pump dryer efficiency (HPDE) and moisture extraction rate (MER). The average values of the full air recirculation HPD system efficiency indicators were obtained in range: SMERHP=0.030-1.317kg/kWh, SMERHPD=0.047-0.651kg/kWh, SEC=0.211-9.358 MJ/kg, HPDE=0.426-20.7 MJ/kg and MER=1.362-17.194 kWh/kg. The results were evaluated in order to provide better information about the benefits of full air recirculation usage in HPD systems in regards to the other similar dryer configurations. Practical ApplicationsThis study uses full air recirculation to provide better control of the main drying parameters and to minimize impact of the surroundings. The novelty of this study lies in the fact that RH of the drying air was precisely controlled during all experiments. The evaluation of the relevance of full air recirculation HPD system is rare in literature and therefore the present study is directed toward quantification of influence of HPD system configuration on drying process efficiency. Dependence of several energy efficiency indicators of HPD system performance: SMER, SEC, HPDE and MER on HPD system air recirculation rate were investigated. The results were evaluated in order to provide better information about the benefits of full air recirculation usage in HPD systems in regards to the other similar dryer configurations.
PB  - Wiley, Hoboken
T2  - Journal of Food Process Engineering
T1  - Experimental Investigation of the Efficiency of Heat Pump Drying System with Full Air Recirculation
IS  - 2
VL  - 40
DO  - 10.1111/jfpe.12386
ER  - 

@article{
author = "Zlatanović, Ivan and Komatina, Mirko and Antonijević, Dragi",
year = "2017",
abstract = "The paper presents results of an experimental investigation of convective drying of apples var. Idared, potatoes var. Desiree and bananas var. Grand Nein, in full recirculation laboratory-scale dryer. The experiments were conducted with cube-shaped apple samples (side length 10 and 13mm), potato chips (slice thickness 2 and 3mm) and banana cylinders (slice thickness 6 and 7mm), without pre-treatment. The drying experiment was conducted at fully controlled air temperature (35-45-55 degrees C), relative humidity (10-20-30%) and air velocity (1-1.5-2m/s). Results are discussed through their comparison with other heat pump drying system scenarios in order to find the most efficient one. The efficiency of the heat pump drying (HPD) system was analyzed using the several indicators: specific moisture extraction rate (SMER), specific energy consumption (SEC), heat pump dryer efficiency (HPDE) and moisture extraction rate (MER). The average values of the full air recirculation HPD system efficiency indicators were obtained in range: SMERHP=0.030-1.317kg/kWh, SMERHPD=0.047-0.651kg/kWh, SEC=0.211-9.358 MJ/kg, HPDE=0.426-20.7 MJ/kg and MER=1.362-17.194 kWh/kg. The results were evaluated in order to provide better information about the benefits of full air recirculation usage in HPD systems in regards to the other similar dryer configurations. Practical ApplicationsThis study uses full air recirculation to provide better control of the main drying parameters and to minimize impact of the surroundings. The novelty of this study lies in the fact that RH of the drying air was precisely controlled during all experiments. The evaluation of the relevance of full air recirculation HPD system is rare in literature and therefore the present study is directed toward quantification of influence of HPD system configuration on drying process efficiency. Dependence of several energy efficiency indicators of HPD system performance: SMER, SEC, HPDE and MER on HPD system air recirculation rate were investigated. The results were evaluated in order to provide better information about the benefits of full air recirculation usage in HPD systems in regards to the other similar dryer configurations.",
publisher = "Wiley, Hoboken",
journal = "Journal of Food Process Engineering",
title = "Experimental Investigation of the Efficiency of Heat Pump Drying System with Full Air Recirculation",
number = "2",
volume = "40",
doi = "10.1111/jfpe.12386"
}

Zlatanović, I., Komatina, M.,& Antonijević, D.. (2017). Experimental Investigation of the Efficiency of Heat Pump Drying System with Full Air Recirculation. in Journal of Food Process Engineering
Wiley, Hoboken., 40(2).
https://doi.org/10.1111/jfpe.12386

Zlatanović I, Komatina M, Antonijević D. Experimental Investigation of the Efficiency of Heat Pump Drying System with Full Air Recirculation. in Journal of Food Process Engineering. 2017;40(2).
doi:10.1111/jfpe.12386 .

Zlatanović, Ivan, Komatina, Mirko, Antonijević, Dragi, "Experimental Investigation of the Efficiency of Heat Pump Drying System with Full Air Recirculation" in Journal of Food Process Engineering, 40, no. 2 (2017),
https://doi.org/10.1111/jfpe.12386 . .

TY  - JOUR
AU  - Mladenović, Milica R.
AU  - Dakić, Dragoljub
AU  - Nemoda, Stevan
AU  - Paprika, Milijana J.
AU  - Komatina, Mirko
AU  - Repić, Branislav
AU  - Erić, Aleksandar M.
PY  - 2016
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/2410
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.
PB  - Savez hemijskih inženjera, Beograd
T2  - Hemijska Industrija
T1  - The combustion of biomass - The impact of its types and combustion technologies on the emission of nitrogen oxide
EP  - 298
IS  - 3
SP  - 287
VL  - 70
DO  - 10.2298/HEMIND150409033M
ER  - 

@article{
author = "Mladenović, Milica R. and Dakić, Dragoljub and Nemoda, Stevan and Paprika, Milijana J. and Komatina, Mirko and Repić, Branislav and Erić, Aleksandar M.",
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.",
publisher = "Savez hemijskih inženjera, Beograd",
journal = "Hemijska Industrija",
title = "The combustion of biomass - The impact of its types and combustion technologies on the emission of nitrogen oxide",
pages = "298-287",
number = "3",
volume = "70",
doi = "10.2298/HEMIND150409033M"
}

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

Mladenović MR, Dakić D, Nemoda S, Paprika MJ, Komatina M, Repić B, Erić AM. 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, Nemoda, Stevan, Paprika, Milijana J., Komatina, Mirko, Repić, Branislav, Erić, Aleksandar M., "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 . .