TY  - JOUR
AU  - Pezo, Milada L.
AU  - Stevanović, Vladimir D.
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1138
AB  - This paper presents computational fluid dynamics approach to prediction of the heat transfer coefficient for nucleate pool boiling under high heat fluxes. The 3-D numerical simulations of the atmospheric saturated pool boiling are performed. Mathematical modelling of pool boiling requires a treatment of vapor-liquid two-phase mixture on the macro level, as well as on the micro level, such as bubble growth and departure from the heating surface. Two-phase flow is modelled by the two-fluid model, which consists of the mass, momentum, and energy conservation equations for each phase. Interface transfer processes are calculated by the closure laws. Micro level phenomena on the heating surface are modelled with the bubble nucleation site density, the bubble resistance time on the heating wall and with the certain level of randomness in the location of bubble nucleation sites. The developed model was used to determine the heat transfer coefficient and results of numerical simulations are compared with available experimental results and several empirical correlations. A considerable scattering of the predictions of the pool boiling heat transfer coefficient by experimental correlations is observed, while the numerically predicted values are within the range of results calculated by well-known Kutateladze, Mostinski, Kruzhilin, and Rohsenow correlations. The presented numerical modelling approach is original regarding both the application of the two-fluid two-phase model for the determination of heat transfer coefficient in pool boiling and the defined boundary conditions at the heated wall surface.
T2  - Thermal Science
T1  - Numerical Prediction of Nucleate Pool Boiling Heat Transfer Coefficient under High Heat Fluxes
VL  - 20
SP  - S113
EP  - S123
DO  - 10.2298/TSCI150701138P
ER  - 

@article{
author = "Pezo, Milada L. and Stevanović, Vladimir D.",
year = "2016",
abstract = "This paper presents computational fluid dynamics approach to prediction of the heat transfer coefficient for nucleate pool boiling under high heat fluxes. The 3-D numerical simulations of the atmospheric saturated pool boiling are performed. Mathematical modelling of pool boiling requires a treatment of vapor-liquid two-phase mixture on the macro level, as well as on the micro level, such as bubble growth and departure from the heating surface. Two-phase flow is modelled by the two-fluid model, which consists of the mass, momentum, and energy conservation equations for each phase. Interface transfer processes are calculated by the closure laws. Micro level phenomena on the heating surface are modelled with the bubble nucleation site density, the bubble resistance time on the heating wall and with the certain level of randomness in the location of bubble nucleation sites. The developed model was used to determine the heat transfer coefficient and results of numerical simulations are compared with available experimental results and several empirical correlations. A considerable scattering of the predictions of the pool boiling heat transfer coefficient by experimental correlations is observed, while the numerically predicted values are within the range of results calculated by well-known Kutateladze, Mostinski, Kruzhilin, and Rohsenow correlations. The presented numerical modelling approach is original regarding both the application of the two-fluid two-phase model for the determination of heat transfer coefficient in pool boiling and the defined boundary conditions at the heated wall surface.",
journal = "Thermal Science",
title = "Numerical Prediction of Nucleate Pool Boiling Heat Transfer Coefficient under High Heat Fluxes",
volume = "20",
pages = "S113-S123",
doi = "10.2298/TSCI150701138P"
}

Pezo, M. L.,& Stevanović, V. D.. (2016). Numerical Prediction of Nucleate Pool Boiling Heat Transfer Coefficient under High Heat Fluxes. in Thermal Science, 20, S113-S123.
https://doi.org/10.2298/TSCI150701138P

Pezo ML, Stevanović VD. Numerical Prediction of Nucleate Pool Boiling Heat Transfer Coefficient under High Heat Fluxes. in Thermal Science. 2016;20:S113-S123.
doi:10.2298/TSCI150701138P .

Pezo, Milada L., Stevanović, Vladimir D., "Numerical Prediction of Nucleate Pool Boiling Heat Transfer Coefficient under High Heat Fluxes" in Thermal Science, 20 (2016):S113-S123,
https://doi.org/10.2298/TSCI150701138P . .

TY  - JOUR
AU  - Stojanović, Andrijana D.
AU  - Stevanović, Vladimir D.
AU  - Petrović, Milan M.
AU  - Zivkovic, Dragoljub S.
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7136
AB  - Multi-dimensional numerical simulation of the atmospheric saturated pool boiling is performed. The applied modelling and numerical methods enable a full representation of the liquid and vapour two-phase mixture behaviour on the heated surface, with included prediction of the swell level and heated wall temperature field. In this way the integral behaviour of nucleate pool boiling is simulated. The micro conditions of bubble generation at the heated wall surface are modelled by the bubble nucleation site density, the liquid wetting contact angle and the bubble grow time. The bubble nucleation sites are randomly located within zones of equal size, where the number of zones equals the nucleation site density. The conjugate heat transfer from the heated wall to the liquid is taken into account in wetted heated wall areas around bubble nucleation sites. The boiling curve relation between the heat flux and the heated wall surface temperature in excess of the saturation temperature is predicted for the pool boiling conditions reported in the literature and a good agreement is achieved with experimentally measured data. The influence of the nucleation site density on the boiling curve characteristic is confirmed. In addition, the influence of the heat flux intensity on the spatial effects of vapour generation and two-phase flow are shown, such as the increase of the swell level position and the reduced wetting of the heated wall surface by the heat flux increase.
T2  - Thermal Science
T1  - Numerical Investigation of Nucleate Pool Boiling Heat Transfer
VL  - 20
SP  - S1301
EP  - S1312
DO  - 10.2298/TSCI160404276S
ER  - 

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

Stojanović, A. D., Stevanović, V. D., Petrović, M. M.,& Zivkovic, D. S.. (2016). Numerical Investigation of Nucleate Pool Boiling Heat Transfer. in Thermal Science, 20, S1301-S1312.
https://doi.org/10.2298/TSCI160404276S

Stojanović AD, Stevanović VD, Petrović MM, Zivkovic DS. Numerical Investigation of Nucleate Pool Boiling Heat Transfer. in Thermal Science. 2016;20:S1301-S1312.
doi:10.2298/TSCI160404276S .

Stojanović, Andrijana D., Stevanović, Vladimir D., Petrović, Milan M., Zivkovic, Dragoljub S., "Numerical Investigation of Nucleate Pool Boiling Heat Transfer" in Thermal Science, 20 (2016):S1301-S1312,
https://doi.org/10.2298/TSCI160404276S . .

TY  - JOUR
AU  - Pezo, Milada L.
AU  - Stevanović, Vladimir
PY  - 2011
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4395
AB  - Three-dimensional numerical simulations of the atmospheric saturated pool boiling are performed with the aim of predicting the critical heat flux. The two-phase mixture in pool boiling is described with the transient two-fluid model. The transient heat conduction in the horizontal heated wall is also solved. Dynamics of vapor generation on the heated wall is modeled through the density of nucleation sites and the bubble residence time on the wall. The heaters surface is divided into zones, which number per unit area equals the density of nucleation sites, while the location of nucleation site within each zone is determined by a random function. The results show a replenishment of the heaters surface with water and surface wetting for lower heat fluxes, while heaters surface dry-out is predicted at critical heat flux values. Also, it is shown that the decrease of nucleation site density leads to the reduction of critical heat flux values. Obtained results of critical heat flux are in good agreement with available measured data. The presented approach is original regarding both the application of the two-fluid two-phase model for the prediction of boiling crisis in pool boiling and the defined boundary conditions at the heated wall surface. (C) 2011 Elsevier Ltd. All rights reserved.
T2  - International Journal of Heat and Mass Transfer
T1  - Numerical prediction of critical heat flux in pool boiling with the two-fluid model
VL  - 54
IS  - 15-16
SP  - 3296
EP  - 3303
DO  - 10.1016/j.ijheatmasstransfer.2011.03.057
ER  - 

@article{
author = "Pezo, Milada L. and Stevanović, Vladimir",
year = "2011",
abstract = "Three-dimensional numerical simulations of the atmospheric saturated pool boiling are performed with the aim of predicting the critical heat flux. The two-phase mixture in pool boiling is described with the transient two-fluid model. The transient heat conduction in the horizontal heated wall is also solved. Dynamics of vapor generation on the heated wall is modeled through the density of nucleation sites and the bubble residence time on the wall. The heaters surface is divided into zones, which number per unit area equals the density of nucleation sites, while the location of nucleation site within each zone is determined by a random function. The results show a replenishment of the heaters surface with water and surface wetting for lower heat fluxes, while heaters surface dry-out is predicted at critical heat flux values. Also, it is shown that the decrease of nucleation site density leads to the reduction of critical heat flux values. Obtained results of critical heat flux are in good agreement with available measured data. The presented approach is original regarding both the application of the two-fluid two-phase model for the prediction of boiling crisis in pool boiling and the defined boundary conditions at the heated wall surface. (C) 2011 Elsevier Ltd. All rights reserved.",
journal = "International Journal of Heat and Mass Transfer",
title = "Numerical prediction of critical heat flux in pool boiling with the two-fluid model",
volume = "54",
number = "15-16",
pages = "3296-3303",
doi = "10.1016/j.ijheatmasstransfer.2011.03.057"
}

Pezo, M. L.,& Stevanović, V.. (2011). Numerical prediction of critical heat flux in pool boiling with the two-fluid model. in International Journal of Heat and Mass Transfer, 54(15-16), 3296-3303.
https://doi.org/10.1016/j.ijheatmasstransfer.2011.03.057

Pezo ML, Stevanović V. Numerical prediction of critical heat flux in pool boiling with the two-fluid model. in International Journal of Heat and Mass Transfer. 2011;54(15-16):3296-3303.
doi:10.1016/j.ijheatmasstransfer.2011.03.057 .

Pezo, Milada L., Stevanović, Vladimir, "Numerical prediction of critical heat flux in pool boiling with the two-fluid model" in International Journal of Heat and Mass Transfer, 54, no. 15-16 (2011):3296-3303,
https://doi.org/10.1016/j.ijheatmasstransfer.2011.03.057 . .

TY  - JOUR
AU  - Jovanović, Marina P.
AU  - Afgan, Naim H.
AU  - Radovanovic, Predrag
AU  - Stevanović, Vladimir
PY  - 2009
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6801
AB  - Cities are the most important energy consumers of any country in all energy vector components. Nowadays, Belgrade as a cultural, educational, scientific, administrative, political, and business center of the region with its own structure of production, transportation, services, and urban system, represents significant consumer of different energy forms. Only useful and final energy is delivered to energy consuming sectors of a city. Simulation model MAED was used in this paper to estimate energy demand in city for a long time period. On the basis of energy demand forecast for three major energy consumers (sectors of household/service, industry, and transportation) until 2020, the sustainable development,scenarios of Belgrade energy system are developed (2005-2010, 2010-2015, 2015-2020). For each scenario, the energy systems of primary resources are determined so to satisfy the predicted differences in energy consumption for the mentioned time intervals until 2020. In this case different scenarios are evaluated. The evaluation of scenarios sustainability is obtained by method of multi-criteria analysis. Using energy indices for sustainable development, the following indices are taken into consideration for the assessment of scenario sustainability: economical, social, and environmental. The obtained results can be used by experts in decision-making process. (c) 2008 Elsevier Ltd. All rights reserved.
T2  - Energy
T1  - Sustainable development of the Belgrade energy system
VL  - 34
IS  - 5
SP  - 532
EP  - 539
DO  - 10.1016/j.energy.2008.01.013
ER  - 

@article{
author = "Jovanović, Marina P. and Afgan, Naim H. and Radovanovic, Predrag and Stevanović, Vladimir",
year = "2009",
abstract = "Cities are the most important energy consumers of any country in all energy vector components. Nowadays, Belgrade as a cultural, educational, scientific, administrative, political, and business center of the region with its own structure of production, transportation, services, and urban system, represents significant consumer of different energy forms. Only useful and final energy is delivered to energy consuming sectors of a city. Simulation model MAED was used in this paper to estimate energy demand in city for a long time period. On the basis of energy demand forecast for three major energy consumers (sectors of household/service, industry, and transportation) until 2020, the sustainable development,scenarios of Belgrade energy system are developed (2005-2010, 2010-2015, 2015-2020). For each scenario, the energy systems of primary resources are determined so to satisfy the predicted differences in energy consumption for the mentioned time intervals until 2020. In this case different scenarios are evaluated. The evaluation of scenarios sustainability is obtained by method of multi-criteria analysis. Using energy indices for sustainable development, the following indices are taken into consideration for the assessment of scenario sustainability: economical, social, and environmental. The obtained results can be used by experts in decision-making process. (c) 2008 Elsevier Ltd. All rights reserved.",
journal = "Energy",
title = "Sustainable development of the Belgrade energy system",
volume = "34",
number = "5",
pages = "532-539",
doi = "10.1016/j.energy.2008.01.013"
}

Jovanović, M. P., Afgan, N. H., Radovanovic, P.,& Stevanović, V.. (2009). Sustainable development of the Belgrade energy system. in Energy, 34(5), 532-539.
https://doi.org/10.1016/j.energy.2008.01.013

Jovanović MP, Afgan NH, Radovanovic P, Stevanović V. Sustainable development of the Belgrade energy system. in Energy. 2009;34(5):532-539.
doi:10.1016/j.energy.2008.01.013 .

Jovanović, Marina P., Afgan, Naim H., Radovanovic, Predrag, Stevanović, Vladimir, "Sustainable development of the Belgrade energy system" in Energy, 34, no. 5 (2009):532-539,
https://doi.org/10.1016/j.energy.2008.01.013 . .

TY  - JOUR
AU  - Tucaković, Dragan R.
AU  - Živanović, Titoslav
AU  - Stevanović, Vladimir
AU  - Belošević, Srđan
AU  - Galic, Radoslav
PY  - 2008
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3538
AB  - One of the main tasks during the design or simulation and analyses of the utility steam boiler operation is the prediction of a distribution of mill gases and hot air flow rates between burners sections. These are the boundary conditions for the combustion process in the boiler furnace, and they strongly influence the steam boiler economy and reliability of operation. A computer code for the prediction of mill gases and hot air distribution between boiler burners has been developed. The code is based on simultaneous calculations of material and heat balances for the fail mill and corresponding air tracts. This paper presents a methodology of performed calculations, the code structure, and results obtained for the steam boiler furnace of 350 MWe thermal power plant equipped with eight fall mills. (C) 2008 Elsevier Ltd. All rights reserved.
T2  - Applied Thermal Engineering
T1  - A computer code for the prediction of mill gases and hot air distribution between burners sections at the utility boiler
VL  - 28
IS  - 17-18
SP  - 2178
EP  - 2186
DO  - 10.1016/j.applthermaleng.2007.12.021
ER  - 

@article{
author = "Tucaković, Dragan R. and Živanović, Titoslav and Stevanović, Vladimir and Belošević, Srđan and Galic, Radoslav",
year = "2008",
abstract = "One of the main tasks during the design or simulation and analyses of the utility steam boiler operation is the prediction of a distribution of mill gases and hot air flow rates between burners sections. These are the boundary conditions for the combustion process in the boiler furnace, and they strongly influence the steam boiler economy and reliability of operation. A computer code for the prediction of mill gases and hot air distribution between boiler burners has been developed. The code is based on simultaneous calculations of material and heat balances for the fail mill and corresponding air tracts. This paper presents a methodology of performed calculations, the code structure, and results obtained for the steam boiler furnace of 350 MWe thermal power plant equipped with eight fall mills. (C) 2008 Elsevier Ltd. All rights reserved.",
journal = "Applied Thermal Engineering",
title = "A computer code for the prediction of mill gases and hot air distribution between burners sections at the utility boiler",
volume = "28",
number = "17-18",
pages = "2178-2186",
doi = "10.1016/j.applthermaleng.2007.12.021"
}

Tucaković, D. R., Živanović, T., Stevanović, V., Belošević, S.,& Galic, R.. (2008). A computer code for the prediction of mill gases and hot air distribution between burners sections at the utility boiler. in Applied Thermal Engineering, 28(17-18), 2178-2186.
https://doi.org/10.1016/j.applthermaleng.2007.12.021

Tucaković DR, Živanović T, Stevanović V, Belošević S, Galic R. A computer code for the prediction of mill gases and hot air distribution between burners sections at the utility boiler. in Applied Thermal Engineering. 2008;28(17-18):2178-2186.
doi:10.1016/j.applthermaleng.2007.12.021 .

Tucaković, Dragan R., Živanović, Titoslav, Stevanović, Vladimir, Belošević, Srđan, Galic, Radoslav, "A computer code for the prediction of mill gases and hot air distribution between burners sections at the utility boiler" in Applied Thermal Engineering, 28, no. 17-18 (2008):2178-2186,
https://doi.org/10.1016/j.applthermaleng.2007.12.021 . .

TY  - JOUR
AU  - Pezo, Milada L.
AU  - Stevanović, Vladimir D.
AU  - Stevanović, Žarko M.
PY  - 2006
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/2991
AB  - A two-dimensional two-fluid numerical model is developed for the prediction of two-phase flow thermal-hydraulics on the shell side of the kettle reboiler. The two-phase flow around tubes in the bundle is modeled with the porous media approach. A closure law for the vapour-liquid interfacial friction is based on modified pipe two-phase flow correlations. The tube bundle flow resistance is calculated by applying to each phase stream the correlations for the pressure drop in a single phase flow across tube bundles and by taking into account the separate contribution of each phase to the total pressure drop. Physically based boundary conditions for the velocity field at the two-phase mixture swell level are stated. The system of governing equations is solved numerically with the finite volume approach for two-phase flow built in the commercial computer program. Simulations are performed for available conditions of performed physical experiments. In comparison to the previous kettle reboiler two-dimensional modeling approaches, here presented model is original regarding the applied closure laws for the interfacial friction and bundle flow resistance, as well as applied boundary conditions for the modeling of two-phase mixture free surface. Also, regarding the previous published results, here obtained numerical results are compared with the available measured data of void fraction within the tube bundle and acceptable agreement is shown. (c) 2005 Elsevier Ltd. All rights reserved.
T2  - International Journal of Heat and Mass Transfer
T1  - A two-dimensional model of the kettle reboiler shell side thermal-hydraulics
VL  - 49
IS  - 7-8
SP  - 1214
EP  - 1224
DO  - 10.1016/j.ijheatmasstransfer.2005.10.004
ER  - 

@article{
author = "Pezo, Milada L. and Stevanović, Vladimir D. and Stevanović, Žarko M.",
year = "2006",
abstract = "A two-dimensional two-fluid numerical model is developed for the prediction of two-phase flow thermal-hydraulics on the shell side of the kettle reboiler. The two-phase flow around tubes in the bundle is modeled with the porous media approach. A closure law for the vapour-liquid interfacial friction is based on modified pipe two-phase flow correlations. The tube bundle flow resistance is calculated by applying to each phase stream the correlations for the pressure drop in a single phase flow across tube bundles and by taking into account the separate contribution of each phase to the total pressure drop. Physically based boundary conditions for the velocity field at the two-phase mixture swell level are stated. The system of governing equations is solved numerically with the finite volume approach for two-phase flow built in the commercial computer program. Simulations are performed for available conditions of performed physical experiments. In comparison to the previous kettle reboiler two-dimensional modeling approaches, here presented model is original regarding the applied closure laws for the interfacial friction and bundle flow resistance, as well as applied boundary conditions for the modeling of two-phase mixture free surface. Also, regarding the previous published results, here obtained numerical results are compared with the available measured data of void fraction within the tube bundle and acceptable agreement is shown. (c) 2005 Elsevier Ltd. All rights reserved.",
journal = "International Journal of Heat and Mass Transfer",
title = "A two-dimensional model of the kettle reboiler shell side thermal-hydraulics",
volume = "49",
number = "7-8",
pages = "1214-1224",
doi = "10.1016/j.ijheatmasstransfer.2005.10.004"
}

Pezo, M. L., Stevanović, V. D.,& Stevanović, Ž. M.. (2006). A two-dimensional model of the kettle reboiler shell side thermal-hydraulics. in International Journal of Heat and Mass Transfer, 49(7-8), 1214-1224.
https://doi.org/10.1016/j.ijheatmasstransfer.2005.10.004

Pezo ML, Stevanović VD, Stevanović ŽM. A two-dimensional model of the kettle reboiler shell side thermal-hydraulics. in International Journal of Heat and Mass Transfer. 2006;49(7-8):1214-1224.
doi:10.1016/j.ijheatmasstransfer.2005.10.004 .

Pezo, Milada L., Stevanović, Vladimir D., Stevanović, Žarko M., "A two-dimensional model of the kettle reboiler shell side thermal-hydraulics" in International Journal of Heat and Mass Transfer, 49, no. 7-8 (2006):1214-1224,
https://doi.org/10.1016/j.ijheatmasstransfer.2005.10.004 . .

TY  - JOUR
AU  - Belošević, Srđan
AU  - Paprika, Milijana
AU  - Komatina, M
AU  - Stevanović, Žarko M.
AU  - Mladenovic, R
AU  - Oka, Nikola
AU  - Dakić, Dragoljub V.
PY  - 2005
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/2848
AB  - This paper presents selected results obtained by experimental investigation and modeling of flow and heat transfer processes, considering heat exchanger built within an originally developed concept of a household furnace, with convective canals. High efficiency, low emission, firing of both low- and high-rank solid fuels, considerable energy savings, as well as a pleasant heated ambient could be considered as advantages of the furnace. The flue gas-to-water heat exchanger is aimed for heating of water and ambient air in residential compartments. Experimental results show that the heat exchanger has significant influence on increase of the furnace total efficiency. Numerical model of the heat exchanger has been developed, for it is neccesary to obtain reliable data also for the cases not supported by experiments. Predicted values of outlet temperatures of cooling water and flue gases have been compared to the corresponding measured values. Operation characteristics of furnace and heat exchanger could be optimized by combining long-term testing and numerical modeling (C) 2004 Elsevier B.V. All rights reserved.
T2  - Energy and Buildings
T1  - Experimental and numerical investigation of heat exchanger built in solid fuel household furnace of an original concept
VL  - 37
IS  - 4
SP  - 325
EP  - 331
DO  - 10.1016/j.enbuild.2004.06.018
ER  - 

@article{
author = "Belošević, Srđan and Paprika, Milijana and Komatina, M and Stevanović, Žarko M. and Mladenovic, R and Oka, Nikola and Dakić, Dragoljub V.",
year = "2005",
abstract = "This paper presents selected results obtained by experimental investigation and modeling of flow and heat transfer processes, considering heat exchanger built within an originally developed concept of a household furnace, with convective canals. High efficiency, low emission, firing of both low- and high-rank solid fuels, considerable energy savings, as well as a pleasant heated ambient could be considered as advantages of the furnace. The flue gas-to-water heat exchanger is aimed for heating of water and ambient air in residential compartments. Experimental results show that the heat exchanger has significant influence on increase of the furnace total efficiency. Numerical model of the heat exchanger has been developed, for it is neccesary to obtain reliable data also for the cases not supported by experiments. Predicted values of outlet temperatures of cooling water and flue gases have been compared to the corresponding measured values. Operation characteristics of furnace and heat exchanger could be optimized by combining long-term testing and numerical modeling (C) 2004 Elsevier B.V. All rights reserved.",
journal = "Energy and Buildings",
title = "Experimental and numerical investigation of heat exchanger built in solid fuel household furnace of an original concept",
volume = "37",
number = "4",
pages = "325-331",
doi = "10.1016/j.enbuild.2004.06.018"
}

Belošević, S., Paprika, M., Komatina, M., Stevanović, Ž. M., Mladenovic, R., Oka, N.,& Dakić, D. V.. (2005). Experimental and numerical investigation of heat exchanger built in solid fuel household furnace of an original concept. in Energy and Buildings, 37(4), 325-331.
https://doi.org/10.1016/j.enbuild.2004.06.018

Belošević S, Paprika M, Komatina M, Stevanović ŽM, Mladenovic R, Oka N, Dakić DV. Experimental and numerical investigation of heat exchanger built in solid fuel household furnace of an original concept. in Energy and Buildings. 2005;37(4):325-331.
doi:10.1016/j.enbuild.2004.06.018 .

Belošević, Srđan, Paprika, Milijana, Komatina, M, Stevanović, Žarko M., Mladenovic, R, Oka, Nikola, Dakić, Dragoljub V., "Experimental and numerical investigation of heat exchanger built in solid fuel household furnace of an original concept" in Energy and Buildings, 37, no. 4 (2005):325-331,
https://doi.org/10.1016/j.enbuild.2004.06.018 . .

TY  - JOUR
AU  - Čomor, Jožef J.
AU  - Stevanović, Žarko M.
AU  - Rajcevic, M
AU  - Košutić, Duško D.
PY  - 2004
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6415
AB  - Three radionuclides of iodine (I-121, I-123 and I-124) are of great interest for modern nuclear medical diagnostics. They can be all produced by the (p,n) nuclear reaction using isotopically enriched solid TeO2, targets. The produced radioiodine can be rapidly separated from the target material by dry-distillation from the melted target after the irradiation. Since TeO2 has low thermal conductivity, the most critical issue in the design of a production target is the provision of its effective cooling in order to avoid melting of the oxide layer during the irradiation. A compact solid target irradiation system (COSTIS) has been designed for the irradiation of TeO2 targets, suitable for routine production of radioiodine. The target is a circular Pt-disk that carries the TeO2 melted into a circular grove in the center of the disk. The target coin is manually inserted into COSTIS, fixed pneumatically in the irradiation position, released remotely after irradiation and falls down driven by gravity into a transport container. The engineering design of the cavity for helium cooling of the front face of TeO2 and the impinging water jet cooling the back face of the target disk was done based on a simulation of the thermal behavior of the target during the irradiation. A straightforward numerical method for the prediction of the thermal properties of the solid target has been developed. The approach is based on calculations without using the common practice of Prandtl and Nusselt empirical correlation. The fluid flow description in the boundary layer was refined in such a way, that the heat flux, exchanged between the solid and fluid, is obtained directly from Fourier law. The governing equations are based on the local thermodynamic equilibrium and conservation equation of mass, momentum and energy. In order to solve the set of governing equations, the finite-volume method is used. This procedure gives rapid answers whether the proposed geometry satisfies the design criteria. (C) 2003 Elsevier B.V. All rights reserved.
T2  - Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment
T1  - Modeling of thermal properties of a TeO2 target for radioiodine production
VL  - 521
IS  - 1
SP  - 161
EP  - 170
DO  - 10.1016/j.nima.2003.11.147
ER  - 

@article{
author = "Čomor, Jožef J. and Stevanović, Žarko M. and Rajcevic, M and Košutić, Duško D.",
year = "2004",
abstract = "Three radionuclides of iodine (I-121, I-123 and I-124) are of great interest for modern nuclear medical diagnostics. They can be all produced by the (p,n) nuclear reaction using isotopically enriched solid TeO2, targets. The produced radioiodine can be rapidly separated from the target material by dry-distillation from the melted target after the irradiation. Since TeO2 has low thermal conductivity, the most critical issue in the design of a production target is the provision of its effective cooling in order to avoid melting of the oxide layer during the irradiation. A compact solid target irradiation system (COSTIS) has been designed for the irradiation of TeO2 targets, suitable for routine production of radioiodine. The target is a circular Pt-disk that carries the TeO2 melted into a circular grove in the center of the disk. The target coin is manually inserted into COSTIS, fixed pneumatically in the irradiation position, released remotely after irradiation and falls down driven by gravity into a transport container. The engineering design of the cavity for helium cooling of the front face of TeO2 and the impinging water jet cooling the back face of the target disk was done based on a simulation of the thermal behavior of the target during the irradiation. A straightforward numerical method for the prediction of the thermal properties of the solid target has been developed. The approach is based on calculations without using the common practice of Prandtl and Nusselt empirical correlation. The fluid flow description in the boundary layer was refined in such a way, that the heat flux, exchanged between the solid and fluid, is obtained directly from Fourier law. The governing equations are based on the local thermodynamic equilibrium and conservation equation of mass, momentum and energy. In order to solve the set of governing equations, the finite-volume method is used. This procedure gives rapid answers whether the proposed geometry satisfies the design criteria. (C) 2003 Elsevier B.V. All rights reserved.",
journal = "Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment",
title = "Modeling of thermal properties of a TeO2 target for radioiodine production",
volume = "521",
number = "1",
pages = "161-170",
doi = "10.1016/j.nima.2003.11.147"
}

Čomor, J. J., Stevanović, Ž. M., Rajcevic, M.,& Košutić, D. D.. (2004). Modeling of thermal properties of a TeO2 target for radioiodine production. in Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment, 521(1), 161-170.
https://doi.org/10.1016/j.nima.2003.11.147

Čomor JJ, Stevanović ŽM, Rajcevic M, Košutić DD. Modeling of thermal properties of a TeO2 target for radioiodine production. in Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment. 2004;521(1):161-170.
doi:10.1016/j.nima.2003.11.147 .

Čomor, Jožef J., Stevanović, Žarko M., Rajcevic, M, Košutić, Duško D., "Modeling of thermal properties of a TeO2 target for radioiodine production" in Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment, 521, no. 1 (2004):161-170,
https://doi.org/10.1016/j.nima.2003.11.147 . .