TY  - CONF
AU  - Černicin, Vladimir
AU  - Milovančević, Uroš
AU  - Otović, Milena
AU  - Zhang, Wenying
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6827
AB  - Theoretical cycle analysis is an indispensable part of the refrigeration system and heat pump (HP) design. However, due to the simplicity of the calculations and numerous assumptions, there is a deviation from the actual behavior of the system. In this paper, a single-stage, reversible CO2 system, which can operate in both air-conditioning and heating mode, with and without an internal heat exchanger (IHX), was presented. In the heating mode, the deviation of the theoretical cycle from the actual cycle of the heat pump was analyzed, under various operating conditions. Actual cycles were formed based on the experimental investigation of this system. The changes of various parameters and deviations that are made due to a simpler calculation are presented.
PB  - International Institute of Refrigeration
C3  - Proceedings of 10th Conference on Ammonia and CO2 Refrigeration Technology
T1  - THE DIFFERENCE BETWEEN SIMPLIFIED THEORETICAL AND EXPERIMENTAL CYCLE ANALYSIS OF CO2 HEAT PUMP
DO  - 10.18462/iir.nh3-co2.2023.0027
ER  - 

@conference{
author = "Černicin, Vladimir and Milovančević, Uroš and Otović, Milena and Zhang, Wenying",
year = "2023",
abstract = "Theoretical cycle analysis is an indispensable part of the refrigeration system and heat pump (HP) design. However, due to the simplicity of the calculations and numerous assumptions, there is a deviation from the actual behavior of the system. In this paper, a single-stage, reversible CO2 system, which can operate in both air-conditioning and heating mode, with and without an internal heat exchanger (IHX), was presented. In the heating mode, the deviation of the theoretical cycle from the actual cycle of the heat pump was analyzed, under various operating conditions. Actual cycles were formed based on the experimental investigation of this system. The changes of various parameters and deviations that are made due to a simpler calculation are presented.",
publisher = "International Institute of Refrigeration",
journal = "Proceedings of 10th Conference on Ammonia and CO2 Refrigeration Technology",
title = "THE DIFFERENCE BETWEEN SIMPLIFIED THEORETICAL AND EXPERIMENTAL CYCLE ANALYSIS OF CO2 HEAT PUMP",
doi = "10.18462/iir.nh3-co2.2023.0027"
}

Černicin, V., Milovančević, U., Otović, M.,& Zhang, W.. (2023). THE DIFFERENCE BETWEEN SIMPLIFIED THEORETICAL AND EXPERIMENTAL CYCLE ANALYSIS OF CO2 HEAT PUMP. in Proceedings of 10th Conference on Ammonia and CO2 Refrigeration Technology
International Institute of Refrigeration..
https://doi.org/10.18462/iir.nh3-co2.2023.0027

Černicin V, Milovančević U, Otović M, Zhang W. THE DIFFERENCE BETWEEN SIMPLIFIED THEORETICAL AND EXPERIMENTAL CYCLE ANALYSIS OF CO2 HEAT PUMP. in Proceedings of 10th Conference on Ammonia and CO2 Refrigeration Technology. 2023;.
doi:10.18462/iir.nh3-co2.2023.0027 .

Černicin, Vladimir, Milovančević, Uroš, Otović, Milena, Zhang, Wenying, "THE DIFFERENCE BETWEEN SIMPLIFIED THEORETICAL AND EXPERIMENTAL CYCLE ANALYSIS OF CO2 HEAT PUMP" in Proceedings of 10th Conference on Ammonia and CO2 Refrigeration Technology (2023),
https://doi.org/10.18462/iir.nh3-co2.2023.0027 . .

TY  - CONF
AU  - Mandić, Aleksa
AU  - Milovančević, Uroš
AU  - Beljanski, Vladimir
AU  - Otović, Milena
AU  - Černicin, Vladimir
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/5732
AB  - This paper analyzes the operational characteristics of the Tuzla brewery refrigeration system after the installation of the Danfoss IPS8 air purging device. In order for an analysis such as this to be conducted correctly, one must understand where in the brewing industry the need for refrigeration occurs, how non-condensable gases are accumulated inside of the refrigeration system, and how the separation of non-condensable gases is done. After the theoretical part of the analysis, in which the thermodynamic basics of the ammonia refrigeration cycle is explained, an analysis of annual savings was conducted. The results of the analysis are presented in the form of annual savings in electricity consumption, for different operating conditions of the specific refrigeration system with and without a purger. At the end of this analysis, the amount of released non-condensable gases were also calculated.
PB  - Beograd: SMEITS
C3  - Zbornik 53. Međunarodnog kongresa o KGH
T1  - EFFECTS OF PURGING NON-CONDENSABLE GASES FROM AMMONIA REFRIGERATION SYSTEM
UR  - https://hdl.handle.net/21.15107/rcub_machinery_5732
ER  - 

@conference{
author = "Mandić, Aleksa and Milovančević, Uroš and Beljanski, Vladimir and Otović, Milena and Černicin, Vladimir",
year = "2023",
abstract = "This paper analyzes the operational characteristics of the Tuzla brewery refrigeration system after the installation of the Danfoss IPS8 air purging device. In order for an analysis such as this to be conducted correctly, one must understand where in the brewing industry the need for refrigeration occurs, how non-condensable gases are accumulated inside of the refrigeration system, and how the separation of non-condensable gases is done. After the theoretical part of the analysis, in which the thermodynamic basics of the ammonia refrigeration cycle is explained, an analysis of annual savings was conducted. The results of the analysis are presented in the form of annual savings in electricity consumption, for different operating conditions of the specific refrigeration system with and without a purger. At the end of this analysis, the amount of released non-condensable gases were also calculated.",
publisher = "Beograd: SMEITS",
journal = "Zbornik 53. Međunarodnog kongresa o KGH",
title = "EFFECTS OF PURGING NON-CONDENSABLE GASES FROM AMMONIA REFRIGERATION SYSTEM",
url = "https://hdl.handle.net/21.15107/rcub_machinery_5732"
}

Mandić, A., Milovančević, U., Beljanski, V., Otović, M.,& Černicin, V.. (2023). EFFECTS OF PURGING NON-CONDENSABLE GASES FROM AMMONIA REFRIGERATION SYSTEM. in Zbornik 53. Međunarodnog kongresa o KGH
Beograd: SMEITS..
https://hdl.handle.net/21.15107/rcub_machinery_5732

Mandić A, Milovančević U, Beljanski V, Otović M, Černicin V. EFFECTS OF PURGING NON-CONDENSABLE GASES FROM AMMONIA REFRIGERATION SYSTEM. in Zbornik 53. Međunarodnog kongresa o KGH. 2023;.
https://hdl.handle.net/21.15107/rcub_machinery_5732 .

Mandić, Aleksa, Milovančević, Uroš, Beljanski, Vladimir, Otović, Milena, Černicin, Vladimir, "EFFECTS OF PURGING NON-CONDENSABLE GASES FROM AMMONIA REFRIGERATION SYSTEM" in Zbornik 53. Međunarodnog kongresa o KGH (2023),
https://hdl.handle.net/21.15107/rcub_machinery_5732 .

TY  - CONF
AU  - Tamindžić, Jaško
AU  - Tucović, Milica
AU  - Sretenović, Aleksandra
AU  - Milovančević, Uroš
AU  - Černicin, Vladimir
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/5539
AB  - The largest amount of energy in Serbia households is spent on heating needs. Therefore, the main idea of this paper is to compare the heating bills for a residential building in Belgrade using various energy sources. Electric boiler, gas-fired condensing boiler, and air-to-water heat pump are analyzed. For calculating expenses, the current electricity and gas rates in Serbia have been used. For selected cases, both primary energy use and CO2 emission have been compared.
PB  - Beograd: SMEITS
C3  - Zbornik 53. Međunarodnog kongresa o KGH
T1  - ANALYSIS OF ENERGY CONSUMPTION OF A RESIDENTIAL BUILDING USING HOURLY SIMULATIONS
UR  - https://hdl.handle.net/21.15107/rcub_machinery_5539
ER  - 

@conference{
author = "Tamindžić, Jaško and Tucović, Milica and Sretenović, Aleksandra and Milovančević, Uroš and Černicin, Vladimir",
year = "2023",
abstract = "The largest amount of energy in Serbia households is spent on heating needs. Therefore, the main idea of this paper is to compare the heating bills for a residential building in Belgrade using various energy sources. Electric boiler, gas-fired condensing boiler, and air-to-water heat pump are analyzed. For calculating expenses, the current electricity and gas rates in Serbia have been used. For selected cases, both primary energy use and CO2 emission have been compared.",
publisher = "Beograd: SMEITS",
journal = "Zbornik 53. Međunarodnog kongresa o KGH",
title = "ANALYSIS OF ENERGY CONSUMPTION OF A RESIDENTIAL BUILDING USING HOURLY SIMULATIONS",
url = "https://hdl.handle.net/21.15107/rcub_machinery_5539"
}

Tamindžić, J., Tucović, M., Sretenović, A., Milovančević, U.,& Černicin, V.. (2023). ANALYSIS OF ENERGY CONSUMPTION OF A RESIDENTIAL BUILDING USING HOURLY SIMULATIONS. in Zbornik 53. Međunarodnog kongresa o KGH
Beograd: SMEITS..
https://hdl.handle.net/21.15107/rcub_machinery_5539

Tamindžić J, Tucović M, Sretenović A, Milovančević U, Černicin V. ANALYSIS OF ENERGY CONSUMPTION OF A RESIDENTIAL BUILDING USING HOURLY SIMULATIONS. in Zbornik 53. Međunarodnog kongresa o KGH. 2023;.
https://hdl.handle.net/21.15107/rcub_machinery_5539 .

Tamindžić, Jaško, Tucović, Milica, Sretenović, Aleksandra, Milovančević, Uroš, Černicin, Vladimir, "ANALYSIS OF ENERGY CONSUMPTION OF A RESIDENTIAL BUILDING USING HOURLY SIMULATIONS" in Zbornik 53. Međunarodnog kongresa o KGH (2023),
https://hdl.handle.net/21.15107/rcub_machinery_5539 .

TY  - GEN
AU  - Jaćimović, Branislav M.
AU  - Genić, Srbislav
AU  - Stamenić, Mirjana
AU  - Aranđelović, Ivan
AU  - Petrović, Aleksandar
AU  - Mitrović, Nenad
AU  - Milovančević, Uroš
AU  - Ivošević, Miloš
AU  - Otović, Milena
AU  - Petrović, Andrija
AU  - Rajić, Radenko S.
AU  - Tanasić, Nikola
AU  - Mihailović, Miloš
AU  - Marković, Saša
AU  - Bogdanović, Predrag
AU  - Simonović, Tomislav
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6065
PB  - Univerzitet u Beogradu, Mašinski fakultet
T1  - Metodi i primeri eksperimentalnog rada u procesnom inženjerstvu i termotehnici
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6065
ER  - 

@misc{
author = "Jaćimović, Branislav M. and Genić, Srbislav and Stamenić, Mirjana and Aranđelović, Ivan and Petrović, Aleksandar and Mitrović, Nenad and Milovančević, Uroš and Ivošević, Miloš and Otović, Milena and Petrović, Andrija and Rajić, Radenko S. and Tanasić, Nikola and Mihailović, Miloš and Marković, Saša and Bogdanović, Predrag and Simonović, Tomislav",
year = "2022",
publisher = "Univerzitet u Beogradu, Mašinski fakultet",
title = "Metodi i primeri eksperimentalnog rada u procesnom inženjerstvu i termotehnici",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6065"
}

Jaćimović, B. M., Genić, S., Stamenić, M., Aranđelović, I., Petrović, A., Mitrović, N., Milovančević, U., Ivošević, M., Otović, M., Petrović, A., Rajić, R. S., Tanasić, N., Mihailović, M., Marković, S., Bogdanović, P.,& Simonović, T.. (2022). Metodi i primeri eksperimentalnog rada u procesnom inženjerstvu i termotehnici. 
Univerzitet u Beogradu, Mašinski fakultet..
https://hdl.handle.net/21.15107/rcub_machinery_6065

Jaćimović BM, Genić S, Stamenić M, Aranđelović I, Petrović A, Mitrović N, Milovančević U, Ivošević M, Otović M, Petrović A, Rajić RS, Tanasić N, Mihailović M, Marković S, Bogdanović P, Simonović T. Metodi i primeri eksperimentalnog rada u procesnom inženjerstvu i termotehnici. 2022;.
https://hdl.handle.net/21.15107/rcub_machinery_6065 .

Jaćimović, Branislav M., Genić, Srbislav, Stamenić, Mirjana, Aranđelović, Ivan, Petrović, Aleksandar, Mitrović, Nenad, Milovančević, Uroš, Ivošević, Miloš, Otović, Milena, Petrović, Andrija, Rajić, Radenko S., Tanasić, Nikola, Mihailović, Miloš, Marković, Saša, Bogdanović, Predrag, Simonović, Tomislav, "Metodi i primeri eksperimentalnog rada u procesnom inženjerstvu i termotehnici" (2022),
https://hdl.handle.net/21.15107/rcub_machinery_6065 .

TY  - JOUR
AU  - Ivanović, Milica
AU  - Černicin, Vladimir
AU  - Milovančević, Uroš
AU  - Otović, Milena
AU  - Stevanović, Snežana M.
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/5730
AB  - The paper analyzed three generations of R744 systems: the basic booster system, the booster system with parallel compression, and the multi ejector system. The aim was to compare these systems from the point of view of efficiency and electricity consumption. The analysis is based on the model with two temperature levels of evaporators –30 °C and –10 °C, and with a total cooling capacity of 250 kW and 150 kW, respectively. The analysis was carried out for the climatic conditions of the city of Belgrade in the summer period when the greatest differences in operation are expected. The results showed that the next system generations achieve savings in electricity consumption for the considered period.
PB  - Beograd: SMEITS
T2  - KGH. Klimatizacija, grejanje, hlađenje
T1  - COMPARATIVE ANALYSIS OF THREE GENERATIONS OF TRANSCRITICAL CO2 SYSTEMS
IS  - 4
VL  - 51
UR  - https://hdl.handle.net/21.15107/rcub_machinery_5730
ER  - 

@article{
author = "Ivanović, Milica and Černicin, Vladimir and Milovančević, Uroš and Otović, Milena and Stevanović, Snežana M.",
year = "2022",
abstract = "The paper analyzed three generations of R744 systems: the basic booster system, the booster system with parallel compression, and the multi ejector system. The aim was to compare these systems from the point of view of efficiency and electricity consumption. The analysis is based on the model with two temperature levels of evaporators –30 °C and –10 °C, and with a total cooling capacity of 250 kW and 150 kW, respectively. The analysis was carried out for the climatic conditions of the city of Belgrade in the summer period when the greatest differences in operation are expected. The results showed that the next system generations achieve savings in electricity consumption for the considered period.",
publisher = "Beograd: SMEITS",
journal = "KGH. Klimatizacija, grejanje, hlađenje",
title = "COMPARATIVE ANALYSIS OF THREE GENERATIONS OF TRANSCRITICAL CO2 SYSTEMS",
number = "4",
volume = "51",
url = "https://hdl.handle.net/21.15107/rcub_machinery_5730"
}

Ivanović, M., Černicin, V., Milovančević, U., Otović, M.,& Stevanović, S. M.. (2022). COMPARATIVE ANALYSIS OF THREE GENERATIONS OF TRANSCRITICAL CO2 SYSTEMS. in KGH. Klimatizacija, grejanje, hlađenje
Beograd: SMEITS., 51(4).
https://hdl.handle.net/21.15107/rcub_machinery_5730

Ivanović M, Černicin V, Milovančević U, Otović M, Stevanović SM. COMPARATIVE ANALYSIS OF THREE GENERATIONS OF TRANSCRITICAL CO2 SYSTEMS. in KGH. Klimatizacija, grejanje, hlađenje. 2022;51(4).
https://hdl.handle.net/21.15107/rcub_machinery_5730 .

Ivanović, Milica, Černicin, Vladimir, Milovančević, Uroš, Otović, Milena, Stevanović, Snežana M., "COMPARATIVE ANALYSIS OF THREE GENERATIONS OF TRANSCRITICAL CO2 SYSTEMS" in KGH. Klimatizacija, grejanje, hlađenje, 51, no. 4 (2022),
https://hdl.handle.net/21.15107/rcub_machinery_5730 .

TY  - CONF
AU  - Černicin, Vladimir
AU  - Milovančević, Uroš
AU  - Gojak, Milan
AU  - Otović, Milena
AU  - Sretenović, Aleksandra
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/5014
AB  - The use of carbon dioxide (CO2) refrigeration systems is increasingly present in modern supermarkets. Compared to conventional systems with freons, these systems use a natural and environmentally friendly refrigerant, but their energy efficiency is lower. However, with the advent of new technologies and better understanding of carbon dioxide, space has been created for system improvement and the introduction of new technical solutions. Also, one of the useful methods for improving the operation of the transcritical CO2 system is the determination of the optimum high side pressure in the gas cooler.
In this paper, two transcritical CO2 systems (1st generation) are presented, which represent a potential technical solution for the system that will be carried out in the Laboratory for Thermal Science at the Faculty of Mechanical Engineering in Belgrade. In order to maintain the maximum coefficient of performance (COP) with optimum high side pressure, a thermodynamic analysis was carried out for one selected system. In addition to the influence of the ambient air temperature, the possible affecting parameters on  COP and optimum high side pressure was also considered. Finally, a proper control equation is given.
PB  - Beograd: SMEITS
C3  - Zbornik 53. Međunarodnog kongresa o KGH, 2022
T1  - THEORETICAL DETERMINATION OF THE OPTIMUM PRESSURE OF THE TRANSCRITICAL CO2 SYSTEMS IN SUPERMARKET
UR  - https://hdl.handle.net/21.15107/rcub_machinery_5014
ER  - 

@conference{
author = "Černicin, Vladimir and Milovančević, Uroš and Gojak, Milan and Otović, Milena and Sretenović, Aleksandra",
year = "2022",
abstract = "The use of carbon dioxide (CO2) refrigeration systems is increasingly present in modern supermarkets. Compared to conventional systems with freons, these systems use a natural and environmentally friendly refrigerant, but their energy efficiency is lower. However, with the advent of new technologies and better understanding of carbon dioxide, space has been created for system improvement and the introduction of new technical solutions. Also, one of the useful methods for improving the operation of the transcritical CO2 system is the determination of the optimum high side pressure in the gas cooler.
In this paper, two transcritical CO2 systems (1st generation) are presented, which represent a potential technical solution for the system that will be carried out in the Laboratory for Thermal Science at the Faculty of Mechanical Engineering in Belgrade. In order to maintain the maximum coefficient of performance (COP) with optimum high side pressure, a thermodynamic analysis was carried out for one selected system. In addition to the influence of the ambient air temperature, the possible affecting parameters on  COP and optimum high side pressure was also considered. Finally, a proper control equation is given.",
publisher = "Beograd: SMEITS",
journal = "Zbornik 53. Međunarodnog kongresa o KGH, 2022",
title = "THEORETICAL DETERMINATION OF THE OPTIMUM PRESSURE OF THE TRANSCRITICAL CO2 SYSTEMS IN SUPERMARKET",
url = "https://hdl.handle.net/21.15107/rcub_machinery_5014"
}

Černicin, V., Milovančević, U., Gojak, M., Otović, M.,& Sretenović, A.. (2022). THEORETICAL DETERMINATION OF THE OPTIMUM PRESSURE OF THE TRANSCRITICAL CO2 SYSTEMS IN SUPERMARKET. in Zbornik 53. Međunarodnog kongresa o KGH, 2022
Beograd: SMEITS..
https://hdl.handle.net/21.15107/rcub_machinery_5014

Černicin V, Milovančević U, Gojak M, Otović M, Sretenović A. THEORETICAL DETERMINATION OF THE OPTIMUM PRESSURE OF THE TRANSCRITICAL CO2 SYSTEMS IN SUPERMARKET. in Zbornik 53. Međunarodnog kongresa o KGH, 2022. 2022;.
https://hdl.handle.net/21.15107/rcub_machinery_5014 .

Černicin, Vladimir, Milovančević, Uroš, Gojak, Milan, Otović, Milena, Sretenović, Aleksandra, "THEORETICAL DETERMINATION OF THE OPTIMUM PRESSURE OF THE TRANSCRITICAL CO2 SYSTEMS IN SUPERMARKET" in Zbornik 53. Međunarodnog kongresa o KGH, 2022 (2022),
https://hdl.handle.net/21.15107/rcub_machinery_5014 .

TY  - JOUR
AU  - Stevanović, Snežana M.
AU  - Petrović, Tanja S.
AU  - Marković, Dragan
AU  - Milovančević, Uroš
AU  - Stevanović, Simo V
AU  - Urošević, Tijana M.
AU  - Kozarski, Maja S.
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/102
AB  - The effects of different freezing methods and long-term frozen storage on quality of strawberry and raspberry were investigated, that is, the retention of initial property and free radical scavenging (AO) activity after individual quick freezing (IQF) and conventional (discontinuous) freezing. The physicochemical properties, vitamin C, and AO activity were more affected by long-term frozen storage than by freezing itself; however, their better retention was obtained after IQF. Moreover, AO activity was found to be higher in frozen samples compared to fresh fruits, but significant decrease was detected after 8 months of frozen storage. Despite the significantly higher initial content of vitamin C in strawberry, it demonstrated a lower AO activity than raspberry. Sensory attributes were significantly affected by freezing; the most considerable changes were recorded on their texture/firmness, especially after conventional (slow) freezing. Therefore, IQF can generally be suggested as a more suitable method of preserving these delicate fruits than slow freezing. Practical applications Nowadays, consumers are increasingly interested in foods that possess not only good nutritional value but also health-promoting property. Berries are known as rich sources of micronutrients and antioxidant compounds, but consumption of fresh strawberry and raspberry fruits may be limited because of seasonal and market availability; therefore, they must be preserved commonly by freezing. Frozen food industry is of crucial importance for developing countries, in which the fast freezing industry is rapidly developed. Investigation of the effect of industrial freezing and frozen storage on retention of the quality-related property and antioxidant activity is important for providing the best quality for consumers and health benefits, as well as international fruit trade. In addition, the results obtained in this study could provide best practice and guidance for the frozen fruit industry.
PB  - Wiley, Hoboken
T2  - Journal of Food Processing and Preservation
T1  - Changes of quality and free radical scavenging activity of strawberry and raspberry frozen under different conditions
DO  - 10.1111/jfpp.15981
ER  - 

@article{
author = "Stevanović, Snežana M. and Petrović, Tanja S. and Marković, Dragan and Milovančević, Uroš and Stevanović, Simo V and Urošević, Tijana M. and Kozarski, Maja S.",
year = "2021",
abstract = "The effects of different freezing methods and long-term frozen storage on quality of strawberry and raspberry were investigated, that is, the retention of initial property and free radical scavenging (AO) activity after individual quick freezing (IQF) and conventional (discontinuous) freezing. The physicochemical properties, vitamin C, and AO activity were more affected by long-term frozen storage than by freezing itself; however, their better retention was obtained after IQF. Moreover, AO activity was found to be higher in frozen samples compared to fresh fruits, but significant decrease was detected after 8 months of frozen storage. Despite the significantly higher initial content of vitamin C in strawberry, it demonstrated a lower AO activity than raspberry. Sensory attributes were significantly affected by freezing; the most considerable changes were recorded on their texture/firmness, especially after conventional (slow) freezing. Therefore, IQF can generally be suggested as a more suitable method of preserving these delicate fruits than slow freezing. Practical applications Nowadays, consumers are increasingly interested in foods that possess not only good nutritional value but also health-promoting property. Berries are known as rich sources of micronutrients and antioxidant compounds, but consumption of fresh strawberry and raspberry fruits may be limited because of seasonal and market availability; therefore, they must be preserved commonly by freezing. Frozen food industry is of crucial importance for developing countries, in which the fast freezing industry is rapidly developed. Investigation of the effect of industrial freezing and frozen storage on retention of the quality-related property and antioxidant activity is important for providing the best quality for consumers and health benefits, as well as international fruit trade. In addition, the results obtained in this study could provide best practice and guidance for the frozen fruit industry.",
publisher = "Wiley, Hoboken",
journal = "Journal of Food Processing and Preservation",
title = "Changes of quality and free radical scavenging activity of strawberry and raspberry frozen under different conditions",
doi = "10.1111/jfpp.15981"
}

Stevanović, S. M., Petrović, T. S., Marković, D., Milovančević, U., Stevanović, S. V., Urošević, T. M.,& Kozarski, M. S.. (2021). Changes of quality and free radical scavenging activity of strawberry and raspberry frozen under different conditions. in Journal of Food Processing and Preservation
Wiley, Hoboken..
https://doi.org/10.1111/jfpp.15981

Stevanović SM, Petrović TS, Marković D, Milovančević U, Stevanović SV, Urošević TM, Kozarski MS. Changes of quality and free radical scavenging activity of strawberry and raspberry frozen under different conditions. in Journal of Food Processing and Preservation. 2021;.
doi:10.1111/jfpp.15981 .

Stevanović, Snežana M., Petrović, Tanja S., Marković, Dragan, Milovančević, Uroš, Stevanović, Simo V, Urošević, Tijana M., Kozarski, Maja S., "Changes of quality and free radical scavenging activity of strawberry and raspberry frozen under different conditions" in Journal of Food Processing and Preservation (2021),
https://doi.org/10.1111/jfpp.15981 . .

TY  - CONF
AU  - Gajić, Branislav
AU  - Milovančević, Uroš
AU  - Ivošević, Miloš
AU  - Otović, Milena
AU  - Marković, Saša
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6155
AB  - Prirubnice od ugljeničnog čelika predstavljaju sastavni deo cevovoda i opreme u različitim granama industrije. Njihova klasifikacija je u standardima izvršena prema nominalnom pritisku (PN). Radi određivanja PN za prirubnice od ugljeničnog čelika potrebno je poznavati materijal prirubnice, kao i radne uslove: pritisak i temperaturu. Za potrebe inženjerske prakse, u radu su date korelacije između pritiska, temperature i nominalnog pritiska, koje su dobijene obradom podataka, datih u standardu SRPS EN 1092 – Prirubnice i njihovi spojevi – kružne prirubnice za cevi, armature fazonske komade i pribor, koje nose oznaku PN. Ocena kvaliteta korelacija izvršena je pomoću statističkih pokazatelja: korelacionog odnosa i srednjeg kvadratnog odstupanja.
PB  - Beograd: SMEITS
C3  - Zbornik 34. Kongresa Procesing
T1  - Koralacije za određivanje nominalnog pritiska u funkciji od temperature i pritiska za prirubnice od ugljeničnog čelika
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6155
ER  - 

@conference{
author = "Gajić, Branislav and Milovančević, Uroš and Ivošević, Miloš and Otović, Milena and Marković, Saša",
year = "2021",
abstract = "Prirubnice od ugljeničnog čelika predstavljaju sastavni deo cevovoda i opreme u različitim granama industrije. Njihova klasifikacija je u standardima izvršena prema nominalnom pritisku (PN). Radi određivanja PN za prirubnice od ugljeničnog čelika potrebno je poznavati materijal prirubnice, kao i radne uslove: pritisak i temperaturu. Za potrebe inženjerske prakse, u radu su date korelacije između pritiska, temperature i nominalnog pritiska, koje su dobijene obradom podataka, datih u standardu SRPS EN 1092 – Prirubnice i njihovi spojevi – kružne prirubnice za cevi, armature fazonske komade i pribor, koje nose oznaku PN. Ocena kvaliteta korelacija izvršena je pomoću statističkih pokazatelja: korelacionog odnosa i srednjeg kvadratnog odstupanja.",
publisher = "Beograd: SMEITS",
journal = "Zbornik 34. Kongresa Procesing",
title = "Koralacije za određivanje nominalnog pritiska u funkciji od temperature i pritiska za prirubnice od ugljeničnog čelika",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6155"
}

Gajić, B., Milovančević, U., Ivošević, M., Otović, M.,& Marković, S.. (2021). Koralacije za određivanje nominalnog pritiska u funkciji od temperature i pritiska za prirubnice od ugljeničnog čelika. in Zbornik 34. Kongresa Procesing
Beograd: SMEITS..
https://hdl.handle.net/21.15107/rcub_machinery_6155

Gajić B, Milovančević U, Ivošević M, Otović M, Marković S. Koralacije za određivanje nominalnog pritiska u funkciji od temperature i pritiska za prirubnice od ugljeničnog čelika. in Zbornik 34. Kongresa Procesing. 2021;.
https://hdl.handle.net/21.15107/rcub_machinery_6155 .

Gajić, Branislav, Milovančević, Uroš, Ivošević, Miloš, Otović, Milena, Marković, Saša, "Koralacije za određivanje nominalnog pritiska u funkciji od temperature i pritiska za prirubnice od ugljeničnog čelika" in Zbornik 34. Kongresa Procesing (2021),
https://hdl.handle.net/21.15107/rcub_machinery_6155 .

TY  - JOUR
AU  - Stevanović, Snežana M.
AU  - Milovančević, Uroš
AU  - Otović, Milena
AU  - Marković, Dragan
AU  - Leposavić, Aleksandar
AU  - Urošević, Tijana
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/5708
AB  - Freezing is the method usually used for preserving delicate fruit, because the product tends to maintain its original attributes, i.e., keeping its nutritional properties as close as possible to those of fresh fruit. Strawberry is a widespread and highly demanded fruit, but the fresh fruits are available in a short period of time and the largest amount of strawberry is processed by freezing. The aim of the paper is to determine the effect of process of freezing in the industrial conditions, with precooling, on the relevant parameters of the strawberry quality.  The fruits were frozen in the conventional freezing tunnel by cold air temperature of –33 °C until reaching a temperature of –15 °C in the thermal center of the fruits. Packaged frozen fruits were stored in the chamber  at –18 °C. In order to determine the changes in strawberry quality, the content of dry matter, total sugars and acids, pH, vitamin C, and sensory quality characteristics were analyzed. Also, quality index of the fresh and frozen strawberry is determined by calculation. The obtained results showed that there were no significant changes in the physicochemical parameters of quality after the freezing of the strawberry fruits. Significant  changes are found in the sensory characteristics and the most remarkable is the loss of consistency and firmness of the frozen strawberry. Also, some modified color, taste and aroma of the strawberry fruit have been noticed after freezing in the industrial conditions.
PB  - Beograd: SMEITS
T2  - KGH. Klimatizacija, grejanje, hlađenje
T1  - Effect of freezing in the industrial conditions  on quality of strawberry fruits
IS  - 3
VL  - 50
UR  - https://hdl.handle.net/21.15107/rcub_machinery_5708
ER  - 

@article{
author = "Stevanović, Snežana M. and Milovančević, Uroš and Otović, Milena and Marković, Dragan and Leposavić, Aleksandar and Urošević, Tijana",
year = "2021",
abstract = "Freezing is the method usually used for preserving delicate fruit, because the product tends to maintain its original attributes, i.e., keeping its nutritional properties as close as possible to those of fresh fruit. Strawberry is a widespread and highly demanded fruit, but the fresh fruits are available in a short period of time and the largest amount of strawberry is processed by freezing. The aim of the paper is to determine the effect of process of freezing in the industrial conditions, with precooling, on the relevant parameters of the strawberry quality.  The fruits were frozen in the conventional freezing tunnel by cold air temperature of –33 °C until reaching a temperature of –15 °C in the thermal center of the fruits. Packaged frozen fruits were stored in the chamber  at –18 °C. In order to determine the changes in strawberry quality, the content of dry matter, total sugars and acids, pH, vitamin C, and sensory quality characteristics were analyzed. Also, quality index of the fresh and frozen strawberry is determined by calculation. The obtained results showed that there were no significant changes in the physicochemical parameters of quality after the freezing of the strawberry fruits. Significant  changes are found in the sensory characteristics and the most remarkable is the loss of consistency and firmness of the frozen strawberry. Also, some modified color, taste and aroma of the strawberry fruit have been noticed after freezing in the industrial conditions.",
publisher = "Beograd: SMEITS",
journal = "KGH. Klimatizacija, grejanje, hlađenje",
title = "Effect of freezing in the industrial conditions  on quality of strawberry fruits",
number = "3",
volume = "50",
url = "https://hdl.handle.net/21.15107/rcub_machinery_5708"
}

Stevanović, S. M., Milovančević, U., Otović, M., Marković, D., Leposavić, A.,& Urošević, T.. (2021). Effect of freezing in the industrial conditions  on quality of strawberry fruits. in KGH. Klimatizacija, grejanje, hlađenje
Beograd: SMEITS., 50(3).
https://hdl.handle.net/21.15107/rcub_machinery_5708

Stevanović SM, Milovančević U, Otović M, Marković D, Leposavić A, Urošević T. Effect of freezing in the industrial conditions  on quality of strawberry fruits. in KGH. Klimatizacija, grejanje, hlađenje. 2021;50(3).
https://hdl.handle.net/21.15107/rcub_machinery_5708 .

Stevanović, Snežana M., Milovančević, Uroš, Otović, Milena, Marković, Dragan, Leposavić, Aleksandar, Urošević, Tijana, "Effect of freezing in the industrial conditions  on quality of strawberry fruits" in KGH. Klimatizacija, grejanje, hlađenje, 50, no. 3 (2021),
https://hdl.handle.net/21.15107/rcub_machinery_5708 .

TY  - CONF
AU  - Cvetković, Marijana
AU  - Milovančević, Uroš
AU  - Otović, Milena
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/5533
AB  - The paper analyzes the influence of different parameters on the effective Coefficient of Performance (COP) of a ground source heat pump. Heat pump located in the Laboratory for Thermal Science Engineering at the Faculty of Mechanical Engineering in Belgrade is adopted for model.  Since the change in soil temperature more or less depends on the change in air temperature,  the average monthly air temperatures for the considered heating seasons 2014 ÷ 2018 were used in  the calculation. The model enables the analysis of various parameters on performance of heat pump,  such  as  the  change  of the  soil  temperature,  as well  as the  change  of  the return  water  temperature  from the heating system.
PB  - Beograd: SMEITS
C3  - Zbornik 52. Međunarodnog kongresa o KGH
T1  - GROUND SOURCE HEAT PUMP OPERATION ANALYSIS
UR  - https://hdl.handle.net/21.15107/rcub_machinery_5533
ER  - 

@conference{
author = "Cvetković, Marijana and Milovančević, Uroš and Otović, Milena",
year = "2021",
abstract = "The paper analyzes the influence of different parameters on the effective Coefficient of Performance (COP) of a ground source heat pump. Heat pump located in the Laboratory for Thermal Science Engineering at the Faculty of Mechanical Engineering in Belgrade is adopted for model.  Since the change in soil temperature more or less depends on the change in air temperature,  the average monthly air temperatures for the considered heating seasons 2014 ÷ 2018 were used in  the calculation. The model enables the analysis of various parameters on performance of heat pump,  such  as  the  change  of the  soil  temperature,  as well  as the  change  of  the return  water  temperature  from the heating system.",
publisher = "Beograd: SMEITS",
journal = "Zbornik 52. Međunarodnog kongresa o KGH",
title = "GROUND SOURCE HEAT PUMP OPERATION ANALYSIS",
url = "https://hdl.handle.net/21.15107/rcub_machinery_5533"
}

Cvetković, M., Milovančević, U.,& Otović, M.. (2021). GROUND SOURCE HEAT PUMP OPERATION ANALYSIS. in Zbornik 52. Međunarodnog kongresa o KGH
Beograd: SMEITS..
https://hdl.handle.net/21.15107/rcub_machinery_5533

Cvetković M, Milovančević U, Otović M. GROUND SOURCE HEAT PUMP OPERATION ANALYSIS. in Zbornik 52. Međunarodnog kongresa o KGH. 2021;.
https://hdl.handle.net/21.15107/rcub_machinery_5533 .

Cvetković, Marijana, Milovančević, Uroš, Otović, Milena, "GROUND SOURCE HEAT PUMP OPERATION ANALYSIS" in Zbornik 52. Međunarodnog kongresa o KGH (2021),
https://hdl.handle.net/21.15107/rcub_machinery_5533 .

TY  - JOUR
AU  - Mihailović, Miloš
AU  - Milovančević, Uroš
AU  - Genić, Srbislav
AU  - Jaćimović, Branislav M.
AU  - Otović, Milena
AU  - Kolendić, Petar
PY  - 2020
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3274
AB  - In order to establish a reliable procedure for estimation of heat transfer coefficient, experiments on plate finned tube heat exchangers have been conducted on five exchangers. Using own and previously published experimental data databank of 969 working regimes, a new correlation was formed. Correlation is based on hydraulic diameter and porous velocity and on the ratio of characteristic surfaces of the finned tube bundle. Statistical parameters of a new correlation for estimation of heat transfer coefficient are very good, and correlation covers a wide range of geometrical and other parameters of heat exchangers that are industrially important.
PB  - Taylor & Francis Inc, Philadelphia
T2  - Experimental Heat Transfer
T1  - Air side heat transfer coefficient in plate finned tube heat exchangers
EP  - 399
IS  - 4
SP  - 388
VL  - 33
DO  - 10.1080/08916152.2019.1656298
ER  - 

@article{
author = "Mihailović, Miloš and Milovančević, Uroš and Genić, Srbislav and Jaćimović, Branislav M. and Otović, Milena and Kolendić, Petar",
year = "2020",
abstract = "In order to establish a reliable procedure for estimation of heat transfer coefficient, experiments on plate finned tube heat exchangers have been conducted on five exchangers. Using own and previously published experimental data databank of 969 working regimes, a new correlation was formed. Correlation is based on hydraulic diameter and porous velocity and on the ratio of characteristic surfaces of the finned tube bundle. Statistical parameters of a new correlation for estimation of heat transfer coefficient are very good, and correlation covers a wide range of geometrical and other parameters of heat exchangers that are industrially important.",
publisher = "Taylor & Francis Inc, Philadelphia",
journal = "Experimental Heat Transfer",
title = "Air side heat transfer coefficient in plate finned tube heat exchangers",
pages = "399-388",
number = "4",
volume = "33",
doi = "10.1080/08916152.2019.1656298"
}

Mihailović, M., Milovančević, U., Genić, S., Jaćimović, B. M., Otović, M.,& Kolendić, P.. (2020). Air side heat transfer coefficient in plate finned tube heat exchangers. in Experimental Heat Transfer
Taylor & Francis Inc, Philadelphia., 33(4), 388-399.
https://doi.org/10.1080/08916152.2019.1656298

Mihailović M, Milovančević U, Genić S, Jaćimović BM, Otović M, Kolendić P. Air side heat transfer coefficient in plate finned tube heat exchangers. in Experimental Heat Transfer. 2020;33(4):388-399.
doi:10.1080/08916152.2019.1656298 .

Mihailović, Miloš, Milovančević, Uroš, Genić, Srbislav, Jaćimović, Branislav M., Otović, Milena, Kolendić, Petar, "Air side heat transfer coefficient in plate finned tube heat exchangers" in Experimental Heat Transfer, 33, no. 4 (2020):388-399,
https://doi.org/10.1080/08916152.2019.1656298 . .

TY  - GEN
AU  - Simonović, Vojislav
AU  - Marković, Dragan
AU  - Mladenović, Goran
AU  - Pajić, Miloš
AU  - Milovančević, Uroš
AU  - Tasić, Nevena
PY  - 2020
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4897
AB  - Посредством предложеног новог техничког решења омогућава се постављање спектрометријских сензора на платформу која се потом агрегатира и прикључује на трактор у три тачке помоћу његовог подизног механизма. Доње прикључне тачке платформе везане су за рамску конструкцију платформе помоћу четири завртањске везе и могуће је подешавање њиховог међусобног растојања у хоризонталном правцу. На крила платформе се може поставити различит број сензора. Могуће је подешавање размака између њих. Средње крило налази се на вертикалним вођицама, те се његовим вертикалним кретањем подешава растојање између сензора и усева. Два бочна крила платформе везана су зглобном везом за средње. У транспортном положају бочна крила се подижу вертикално, а у радном положају се спуштају у радни положај и имају распон 6410 mm.
PB  - Beograd : Mašinski fakultet
T1  - Traktorska platforma za spektrometrijsko izviđanje useva
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4897
ER  - 

@misc{
author = "Simonović, Vojislav and Marković, Dragan and Mladenović, Goran and Pajić, Miloš and Milovančević, Uroš and Tasić, Nevena",
year = "2020",
abstract = "Посредством предложеног новог техничког решења омогућава се постављање спектрометријских сензора на платформу која се потом агрегатира и прикључује на трактор у три тачке помоћу његовог подизног механизма. Доње прикључне тачке платформе везане су за рамску конструкцију платформе помоћу четири завртањске везе и могуће је подешавање њиховог међусобног растојања у хоризонталном правцу. На крила платформе се може поставити различит број сензора. Могуће је подешавање размака између њих. Средње крило налази се на вертикалним вођицама, те се његовим вертикалним кретањем подешава растојање између сензора и усева. Два бочна крила платформе везана су зглобном везом за средње. У транспортном положају бочна крила се подижу вертикално, а у радном положају се спуштају у радни положај и имају распон 6410 mm.",
publisher = "Beograd : Mašinski fakultet",
title = "Traktorska platforma za spektrometrijsko izviđanje useva",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4897"
}

Simonović, V., Marković, D., Mladenović, G., Pajić, M., Milovančević, U.,& Tasić, N.. (2020). Traktorska platforma za spektrometrijsko izviđanje useva. 
Beograd : Mašinski fakultet..
https://hdl.handle.net/21.15107/rcub_machinery_4897

Simonović V, Marković D, Mladenović G, Pajić M, Milovančević U, Tasić N. Traktorska platforma za spektrometrijsko izviđanje useva. 2020;.
https://hdl.handle.net/21.15107/rcub_machinery_4897 .

Simonović, Vojislav, Marković, Dragan, Mladenović, Goran, Pajić, Miloš, Milovančević, Uroš, Tasić, Nevena, "Traktorska platforma za spektrometrijsko izviđanje useva" (2020),
https://hdl.handle.net/21.15107/rcub_machinery_4897 .

TY  - CONF
AU  - Otović, Milena
AU  - Milovančević, Uroš
AU  - Genić, Srbislav
AU  - Mitrović, Nenad
AU  - Černicin, Vladimir
AU  - Otović, Srđan
AU  - Antić, Milan I.
PY  - 2020
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/5535
AB  - On the hitherto installed chillers/rooftop units/dry coolers and air coolers, a significant improvement in cooling was noticed in the summer mode when the pipe bundle is sprayed with water. Tests have been performed on systems that produce water mist (micron-sized water droplets), which are formed by spraying water under high pressure through the nozzles/nozzle openings. When a drop of micron-sized water comes in contact with warm air, it evaporates very quickly, absorbing a certain amount of heat, which results in cooling the air. This improves the operation of the cooler in critical periods when the ambient air temperature is very high. The aim of the test is to determine the improvement of the cooler operation under operating conditions with the application of the described system in relation to the operating mode without water spraying (dry operating mode).
PB  - Beograd: SMEITS
C3  - Zbornik 51. Međunarodnog kongresa o KGH
T1  - TESTING OF THE INFLUENCE OF THE SPRAY COOLING SYSTEM ON THE AIR COOLER EFFICIENCY
DO  - 10.24094/kghk.020.51.1.11
ER  - 

@conference{
author = "Otović, Milena and Milovančević, Uroš and Genić, Srbislav and Mitrović, Nenad and Černicin, Vladimir and Otović, Srđan and Antić, Milan I.",
year = "2020",
abstract = "On the hitherto installed chillers/rooftop units/dry coolers and air coolers, a significant improvement in cooling was noticed in the summer mode when the pipe bundle is sprayed with water. Tests have been performed on systems that produce water mist (micron-sized water droplets), which are formed by spraying water under high pressure through the nozzles/nozzle openings. When a drop of micron-sized water comes in contact with warm air, it evaporates very quickly, absorbing a certain amount of heat, which results in cooling the air. This improves the operation of the cooler in critical periods when the ambient air temperature is very high. The aim of the test is to determine the improvement of the cooler operation under operating conditions with the application of the described system in relation to the operating mode without water spraying (dry operating mode).",
publisher = "Beograd: SMEITS",
journal = "Zbornik 51. Međunarodnog kongresa o KGH",
title = "TESTING OF THE INFLUENCE OF THE SPRAY COOLING SYSTEM ON THE AIR COOLER EFFICIENCY",
doi = "10.24094/kghk.020.51.1.11"
}

Otović, M., Milovančević, U., Genić, S., Mitrović, N., Černicin, V., Otović, S.,& Antić, M. I.. (2020). TESTING OF THE INFLUENCE OF THE SPRAY COOLING SYSTEM ON THE AIR COOLER EFFICIENCY. in Zbornik 51. Međunarodnog kongresa o KGH
Beograd: SMEITS..
https://doi.org/10.24094/kghk.020.51.1.11

Otović M, Milovančević U, Genić S, Mitrović N, Černicin V, Otović S, Antić MI. TESTING OF THE INFLUENCE OF THE SPRAY COOLING SYSTEM ON THE AIR COOLER EFFICIENCY. in Zbornik 51. Međunarodnog kongresa o KGH. 2020;.
doi:10.24094/kghk.020.51.1.11 .

Otović, Milena, Milovančević, Uroš, Genić, Srbislav, Mitrović, Nenad, Černicin, Vladimir, Otović, Srđan, Antić, Milan I., "TESTING OF THE INFLUENCE OF THE SPRAY COOLING SYSTEM ON THE AIR COOLER EFFICIENCY" in Zbornik 51. Međunarodnog kongresa o KGH (2020),
https://doi.org/10.24094/kghk.020.51.1.11 . .

TY  - CONF
AU  - Otović, Milena
AU  - Genić, Srbislav
AU  - Milovančević, Uroš
AU  - Černicin, Vladimir
AU  - Otović, Srđan
AU  - Stevanović, Snežana M.
PY  - 2020
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/5517
AB  - This paper deals with the procedure for measuring the relevant parameters of plate-finned tube heat exchangers operating as an air heaters. Besides the description of the experimental installation, the most important geometric characteristics of these appliances are given. In order to determine the relevant parameters for dry and wet regimes (for cases with and without spray cooling), experimental measurements of the heat and hydraulic performance of the heat exchangers were made. Water flowed through the pipes as a warmer fluid. During the experiments, the flow rates and temperatures of the working fluids were varied within the limits defined by the operating parameters of the installation itself, sufficient to allow the obtained results to be generalized. The experimental data were processed by appropriate statistical methods; the aim was to determine equations suitable for engineering practice. The coefficients of the air-side heat and mass transfer and friction factor are defined on the complex geometry of this type of heat exchangers under realistic operating conditions, as a function of the relevant similarity criteria.
PB  - Beograd: SMEITS
C3  - Zbornik 50. Međunarodnog kongresa o KGH
T1  - TESTING OF AIR HEATERS WITH PLATE FINNED TUBES WITH SPRAY COOLING
UR  - https://hdl.handle.net/21.15107/rcub_machinery_5517
ER  - 

@conference{
author = "Otović, Milena and Genić, Srbislav and Milovančević, Uroš and Černicin, Vladimir and Otović, Srđan and Stevanović, Snežana M.",
year = "2020",
abstract = "This paper deals with the procedure for measuring the relevant parameters of plate-finned tube heat exchangers operating as an air heaters. Besides the description of the experimental installation, the most important geometric characteristics of these appliances are given. In order to determine the relevant parameters for dry and wet regimes (for cases with and without spray cooling), experimental measurements of the heat and hydraulic performance of the heat exchangers were made. Water flowed through the pipes as a warmer fluid. During the experiments, the flow rates and temperatures of the working fluids were varied within the limits defined by the operating parameters of the installation itself, sufficient to allow the obtained results to be generalized. The experimental data were processed by appropriate statistical methods; the aim was to determine equations suitable for engineering practice. The coefficients of the air-side heat and mass transfer and friction factor are defined on the complex geometry of this type of heat exchangers under realistic operating conditions, as a function of the relevant similarity criteria.",
publisher = "Beograd: SMEITS",
journal = "Zbornik 50. Međunarodnog kongresa o KGH",
title = "TESTING OF AIR HEATERS WITH PLATE FINNED TUBES WITH SPRAY COOLING",
url = "https://hdl.handle.net/21.15107/rcub_machinery_5517"
}

Otović, M., Genić, S., Milovančević, U., Černicin, V., Otović, S.,& Stevanović, S. M.. (2020). TESTING OF AIR HEATERS WITH PLATE FINNED TUBES WITH SPRAY COOLING. in Zbornik 50. Međunarodnog kongresa o KGH
Beograd: SMEITS..
https://hdl.handle.net/21.15107/rcub_machinery_5517

Otović M, Genić S, Milovančević U, Černicin V, Otović S, Stevanović SM. TESTING OF AIR HEATERS WITH PLATE FINNED TUBES WITH SPRAY COOLING. in Zbornik 50. Međunarodnog kongresa o KGH. 2020;.
https://hdl.handle.net/21.15107/rcub_machinery_5517 .

Otović, Milena, Genić, Srbislav, Milovančević, Uroš, Černicin, Vladimir, Otović, Srđan, Stevanović, Snežana M., "TESTING OF AIR HEATERS WITH PLATE FINNED TUBES WITH SPRAY COOLING" in Zbornik 50. Međunarodnog kongresa o KGH (2020),
https://hdl.handle.net/21.15107/rcub_machinery_5517 .

TY  - CONF
AU  - Malić, Ljubomir
AU  - Paunović, Aleksandra
AU  - Milovančević, Uroš
AU  - Otović, Milena
AU  - Černicin, Vladimir
AU  - Sretenović, Aleksandra
PY  - 2020
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/5077
AB  - The aim of this paper is a theoretical analysis of the operation of an air-to-water heat pump located in the Labo-ratory for Thermal Science at the Faculty of Mechanical Engineering in Belgrade. This results provide the basis for further experimental analyzes of this installation.
The paper gives a comparative overview of the performance of a scroll and reciprocating compressor when pro-pane (R290) is used as a refrigerant. Also, the analysis of the influence of internal subcooling on the thermodynamic cycle is presented. Finally, according to the developed model of the heat pump performances investigation, the change in the average values of Coefficient of Performance (COP) during the average heating season, for the period 2014 – 2018, is shown.
AB  - Cilj ovog rada je sveobuhvatna teorijska analiza toplotne pumpe vazduh–voda koja se nalazi u Laboratoriji za termotehniku Mašinskog fakulteta u Beogradu. Ostvareni rezultati predstavljaju odličnu osnovu za eksperimentalna ispitivanja ove instalacije.
U radu je dat uporedni pregled performansi spiralnog (skrol) i klipnog kompresora kada se kao rashladni fluid u instalaciji toplotne pumpe koristi propan (R290). Takođe, urađene su analize uticaja unutrašnjeg prehlađivanja na termodinamički ciklus i analiza performansi toplotne pumpe na osnovu napravljenog modela. Na kraju, prikazana je promena vrednosti efektivnog koeficijenta grejanja (COP) za prosečnu grejnu sezonu, u periodu od 2014. do 2018. godine, na osnovu podataka Republičkog hidrometeorološkog zavoda Srbije.
PB  - Beograd : SMEITS
C3  - Zbornik radova 51 Međunarodni kongres o grejanju, hlađenju i klimatizaciji
T1  - Analiza rada toplotne pumpe vazduh-voda
VL  - 51
DO  - 10.24094/kghk.020.51.1.31
ER  - 

@conference{
author = "Malić, Ljubomir and Paunović, Aleksandra and Milovančević, Uroš and Otović, Milena and Černicin, Vladimir and Sretenović, Aleksandra",
year = "2020",
abstract = "The aim of this paper is a theoretical analysis of the operation of an air-to-water heat pump located in the Labo-ratory for Thermal Science at the Faculty of Mechanical Engineering in Belgrade. This results provide the basis for further experimental analyzes of this installation.
The paper gives a comparative overview of the performance of a scroll and reciprocating compressor when pro-pane (R290) is used as a refrigerant. Also, the analysis of the influence of internal subcooling on the thermodynamic cycle is presented. Finally, according to the developed model of the heat pump performances investigation, the change in the average values of Coefficient of Performance (COP) during the average heating season, for the period 2014 – 2018, is shown., Cilj ovog rada je sveobuhvatna teorijska analiza toplotne pumpe vazduh–voda koja se nalazi u Laboratoriji za termotehniku Mašinskog fakulteta u Beogradu. Ostvareni rezultati predstavljaju odličnu osnovu za eksperimentalna ispitivanja ove instalacije.
U radu je dat uporedni pregled performansi spiralnog (skrol) i klipnog kompresora kada se kao rashladni fluid u instalaciji toplotne pumpe koristi propan (R290). Takođe, urađene su analize uticaja unutrašnjeg prehlađivanja na termodinamički ciklus i analiza performansi toplotne pumpe na osnovu napravljenog modela. Na kraju, prikazana je promena vrednosti efektivnog koeficijenta grejanja (COP) za prosečnu grejnu sezonu, u periodu od 2014. do 2018. godine, na osnovu podataka Republičkog hidrometeorološkog zavoda Srbije.",
publisher = "Beograd : SMEITS",
journal = "Zbornik radova 51 Međunarodni kongres o grejanju, hlađenju i klimatizaciji",
title = "Analiza rada toplotne pumpe vazduh-voda",
volume = "51",
doi = "10.24094/kghk.020.51.1.31"
}

Malić, L., Paunović, A., Milovančević, U., Otović, M., Černicin, V.,& Sretenović, A.. (2020). Analiza rada toplotne pumpe vazduh-voda. in Zbornik radova 51 Međunarodni kongres o grejanju, hlađenju i klimatizaciji
Beograd : SMEITS., 51.
https://doi.org/10.24094/kghk.020.51.1.31

Malić L, Paunović A, Milovančević U, Otović M, Černicin V, Sretenović A. Analiza rada toplotne pumpe vazduh-voda. in Zbornik radova 51 Međunarodni kongres o grejanju, hlađenju i klimatizaciji. 2020;51.
doi:10.24094/kghk.020.51.1.31 .

Malić, Ljubomir, Paunović, Aleksandra, Milovančević, Uroš, Otović, Milena, Černicin, Vladimir, Sretenović, Aleksandra, "Analiza rada toplotne pumpe vazduh-voda" in Zbornik radova 51 Međunarodni kongres o grejanju, hlađenju i klimatizaciji, 51 (2020),
https://doi.org/10.24094/kghk.020.51.1.31 . .

TY  - CONF
AU  - Ninković, Dimitrije
AU  - Milovančević, Uroš
AU  - Otović, Milena
AU  - Černicin, Vladimir
PY  - 2020
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/5052
AB  - The paper analyzes the electric energy consumption of three different refrigeration installations: cascade refrigeration system with R134a in the high-temperature circuit and CO2 in the low-temperature circuit, single-stage refrigeration system operating with R404A, and two-stage transcritical CO2 system. The indirect impact of the refrigeration system on global warming through electric energy consumption was examined.
Thermodynamic cycles of these installations have been described and models have been developed to analyze the electric energy consumption required to drive the compressor as the largest consumer, for the cooling capacity of the evaporator 5,7 kW at evaporation temperature -30 °C for meteorological 2017, in the city of Belgrade. As a basis for comparative analysis, the existing cascade refrigeration system, which is located in the Laboratory for Thermal Science at the Faculty of Mechanical Engineering in Belgrade, was selected.
PB  - Beograd: SMEITS
C3  - Zbornik 50. Međunarodnog kongresa o KGH
T1  - COMPARATIVE ANALYSIS OF ELECTRIC ENERGY CONSUMPTION OF CASCADE SYSTEM R134a/CO2 WITH SINGLE-STAGE R404A AND TWO-STAGE CO2 INSTALLATION
UR  - https://hdl.handle.net/21.15107/rcub_machinery_5052
ER  - 

@conference{
author = "Ninković, Dimitrije and Milovančević, Uroš and Otović, Milena and Černicin, Vladimir",
year = "2020",
abstract = "The paper analyzes the electric energy consumption of three different refrigeration installations: cascade refrigeration system with R134a in the high-temperature circuit and CO2 in the low-temperature circuit, single-stage refrigeration system operating with R404A, and two-stage transcritical CO2 system. The indirect impact of the refrigeration system on global warming through electric energy consumption was examined.
Thermodynamic cycles of these installations have been described and models have been developed to analyze the electric energy consumption required to drive the compressor as the largest consumer, for the cooling capacity of the evaporator 5,7 kW at evaporation temperature -30 °C for meteorological 2017, in the city of Belgrade. As a basis for comparative analysis, the existing cascade refrigeration system, which is located in the Laboratory for Thermal Science at the Faculty of Mechanical Engineering in Belgrade, was selected.",
publisher = "Beograd: SMEITS",
journal = "Zbornik 50. Međunarodnog kongresa o KGH",
title = "COMPARATIVE ANALYSIS OF ELECTRIC ENERGY CONSUMPTION OF CASCADE SYSTEM R134a/CO2 WITH SINGLE-STAGE R404A AND TWO-STAGE CO2 INSTALLATION",
url = "https://hdl.handle.net/21.15107/rcub_machinery_5052"
}

Ninković, D., Milovančević, U., Otović, M.,& Černicin, V.. (2020). COMPARATIVE ANALYSIS OF ELECTRIC ENERGY CONSUMPTION OF CASCADE SYSTEM R134a/CO2 WITH SINGLE-STAGE R404A AND TWO-STAGE CO2 INSTALLATION. in Zbornik 50. Međunarodnog kongresa o KGH
Beograd: SMEITS..
https://hdl.handle.net/21.15107/rcub_machinery_5052

Ninković D, Milovančević U, Otović M, Černicin V. COMPARATIVE ANALYSIS OF ELECTRIC ENERGY CONSUMPTION OF CASCADE SYSTEM R134a/CO2 WITH SINGLE-STAGE R404A AND TWO-STAGE CO2 INSTALLATION. in Zbornik 50. Međunarodnog kongresa o KGH. 2020;.
https://hdl.handle.net/21.15107/rcub_machinery_5052 .

Ninković, Dimitrije, Milovančević, Uroš, Otović, Milena, Černicin, Vladimir, "COMPARATIVE ANALYSIS OF ELECTRIC ENERGY CONSUMPTION OF CASCADE SYSTEM R134a/CO2 WITH SINGLE-STAGE R404A AND TWO-STAGE CO2 INSTALLATION" in Zbornik 50. Međunarodnog kongresa o KGH (2020),
https://hdl.handle.net/21.15107/rcub_machinery_5052 .

TY  - CONF
AU  - Milovančević, Uroš
AU  - Kosi, Franc
AU  - Stojković, Milena
AU  - Stevanović, Snežana M.
PY  - 2019
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/5672
AB  - This paper presents an analysis of convective heat load of frozen surfaces. A mathematical  model for determination of "dry" and "wet" heat loads has been formed. The mass heat transfer  coefficient  σ  i s estimated by the  Chilton -Colburn's analogy .  T he impact of re levant  parameters of  convective  loads (flow velocity and relative humidity over ice, the surface temperature of the ice  rink  and the characteristic length of ice rink )  has been analyzed . Finally, measures  for  improv ing  the energy efficiency of the system  has been  highlighted.
PB  - Beograd: SMEITS
C3  - Zbornik 45. Međunarodnog kongresa o KGH
T1  - HEAT TRANSFER AND  MOISTURE LOSS FROM F ROZEN SURFACE - AN ENGINEERING APPROACH
UR  - https://hdl.handle.net/21.15107/rcub_machinery_5672
ER  - 

@conference{
author = "Milovančević, Uroš and Kosi, Franc and Stojković, Milena and Stevanović, Snežana M.",
year = "2019",
abstract = "This paper presents an analysis of convective heat load of frozen surfaces. A mathematical  model for determination of "dry" and "wet" heat loads has been formed. The mass heat transfer  coefficient  σ  i s estimated by the  Chilton -Colburn's analogy .  T he impact of re levant  parameters of  convective  loads (flow velocity and relative humidity over ice, the surface temperature of the ice  rink  and the characteristic length of ice rink )  has been analyzed . Finally, measures  for  improv ing  the energy efficiency of the system  has been  highlighted.",
publisher = "Beograd: SMEITS",
journal = "Zbornik 45. Međunarodnog kongresa o KGH",
title = "HEAT TRANSFER AND  MOISTURE LOSS FROM F ROZEN SURFACE - AN ENGINEERING APPROACH",
url = "https://hdl.handle.net/21.15107/rcub_machinery_5672"
}

Milovančević, U., Kosi, F., Stojković, M.,& Stevanović, S. M.. (2019). HEAT TRANSFER AND  MOISTURE LOSS FROM F ROZEN SURFACE - AN ENGINEERING APPROACH. in Zbornik 45. Međunarodnog kongresa o KGH
Beograd: SMEITS..
https://hdl.handle.net/21.15107/rcub_machinery_5672

Milovančević U, Kosi F, Stojković M, Stevanović SM. HEAT TRANSFER AND  MOISTURE LOSS FROM F ROZEN SURFACE - AN ENGINEERING APPROACH. in Zbornik 45. Međunarodnog kongresa o KGH. 2019;.
https://hdl.handle.net/21.15107/rcub_machinery_5672 .

Milovančević, Uroš, Kosi, Franc, Stojković, Milena, Stevanović, Snežana M., "HEAT TRANSFER AND  MOISTURE LOSS FROM F ROZEN SURFACE - AN ENGINEERING APPROACH" in Zbornik 45. Međunarodnog kongresa o KGH (2019),
https://hdl.handle.net/21.15107/rcub_machinery_5672 .

TY  - JOUR
AU  - Milovančević, Uroš
AU  - Jaćimović, Branislav M.
AU  - Genić, Srbislav
AU  - El-Sagier, Faraj
AU  - Otović, Milena
AU  - Stevanović, Snežana M.
PY  - 2019
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3233
AB  - Thermoeconomic analysis of spiral heat exchanger is conducted. Different geometrical parameters, such as outer diameter, plate height, passage gap, etc. are used and varied in a wide range. Detailed thermal and total costs analyses were performed for two spiral heat exchanger with different process fluids (water and thermal oil) with temperature changes, while the wall temperature was kept constant (condensation). The results were shown graphically. It is determined that optimum values of number of entropy generation units correspond to minimum total annual cost. The optimal solution could be found in the recommended range of geometric sizes for defined inlet and outlet temperatures and process fluid-flow rate.
PB  - Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd
T2  - Thermal Science
T1  - Thermoeconomic analysis of spiral heat exchanger with constant wall temperature
EP  - 410
IS  - 1
SP  - 401
VL  - 23
DO  - 10.2298/TSCI170605150M
ER  - 

@article{
author = "Milovančević, Uroš and Jaćimović, Branislav M. and Genić, Srbislav and El-Sagier, Faraj and Otović, Milena and Stevanović, Snežana M.",
year = "2019",
abstract = "Thermoeconomic analysis of spiral heat exchanger is conducted. Different geometrical parameters, such as outer diameter, plate height, passage gap, etc. are used and varied in a wide range. Detailed thermal and total costs analyses were performed for two spiral heat exchanger with different process fluids (water and thermal oil) with temperature changes, while the wall temperature was kept constant (condensation). The results were shown graphically. It is determined that optimum values of number of entropy generation units correspond to minimum total annual cost. The optimal solution could be found in the recommended range of geometric sizes for defined inlet and outlet temperatures and process fluid-flow rate.",
publisher = "Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd",
journal = "Thermal Science",
title = "Thermoeconomic analysis of spiral heat exchanger with constant wall temperature",
pages = "410-401",
number = "1",
volume = "23",
doi = "10.2298/TSCI170605150M"
}

Milovančević, U., Jaćimović, B. M., Genić, S., El-Sagier, F., Otović, M.,& Stevanović, S. M.. (2019). Thermoeconomic analysis of spiral heat exchanger with constant wall temperature. in Thermal Science
Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd., 23(1), 401-410.
https://doi.org/10.2298/TSCI170605150M

Milovančević U, Jaćimović BM, Genić S, El-Sagier F, Otović M, Stevanović SM. Thermoeconomic analysis of spiral heat exchanger with constant wall temperature. in Thermal Science. 2019;23(1):401-410.
doi:10.2298/TSCI170605150M .

Milovančević, Uroš, Jaćimović, Branislav M., Genić, Srbislav, El-Sagier, Faraj, Otović, Milena, Stevanović, Snežana M., "Thermoeconomic analysis of spiral heat exchanger with constant wall temperature" in Thermal Science, 23, no. 1 (2019):401-410,
https://doi.org/10.2298/TSCI170605150M . .

TY  - JOUR
AU  - Marković, Sasa
AU  - Jaćimović, Branislav M.
AU  - Genić, Srbislav
AU  - Mihailović, Miloš
AU  - Milovančević, Uroš
AU  - Otović, Milena
PY  - 2019
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3095
AB  - Previous researches have proved that newly introduced parameters such as void velocity and others can be successfully used for correlating the heat transfer and pressure drop parameters. In order to establish a reliable procedure for estimation of air pressure drop, experiments on plate finned tube heat exchangers have been conducted, as well as the extensive investigation of the open literature. Using own and previously published experimental data, new correlation for estimation of air pressure drop have been established, covering a wide range of parameters of industrial importance. New correlation is comprehensive and statistically superior to any other pressure drop correlation.
PB  - Elsevier Sci Ltd, Oxford
T2  - International Journal of Refrigeration-Revue Internationale Du Froid
T1  - Air side pressure drop in plate finned tube heat exchangers
EP  - 36
SP  - 24
VL  - 99
DO  - 10.1016/j.ijrefrig.2018.11.038
ER  - 

@article{
author = "Marković, Sasa and Jaćimović, Branislav M. and Genić, Srbislav and Mihailović, Miloš and Milovančević, Uroš and Otović, Milena",
year = "2019",
abstract = "Previous researches have proved that newly introduced parameters such as void velocity and others can be successfully used for correlating the heat transfer and pressure drop parameters. In order to establish a reliable procedure for estimation of air pressure drop, experiments on plate finned tube heat exchangers have been conducted, as well as the extensive investigation of the open literature. Using own and previously published experimental data, new correlation for estimation of air pressure drop have been established, covering a wide range of parameters of industrial importance. New correlation is comprehensive and statistically superior to any other pressure drop correlation.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "International Journal of Refrigeration-Revue Internationale Du Froid",
title = "Air side pressure drop in plate finned tube heat exchangers",
pages = "36-24",
volume = "99",
doi = "10.1016/j.ijrefrig.2018.11.038"
}

Marković, S., Jaćimović, B. M., Genić, S., Mihailović, M., Milovančević, U.,& Otović, M.. (2019). Air side pressure drop in plate finned tube heat exchangers. in International Journal of Refrigeration-Revue Internationale Du Froid
Elsevier Sci Ltd, Oxford., 99, 24-36.
https://doi.org/10.1016/j.ijrefrig.2018.11.038

Marković S, Jaćimović BM, Genić S, Mihailović M, Milovančević U, Otović M. Air side pressure drop in plate finned tube heat exchangers. in International Journal of Refrigeration-Revue Internationale Du Froid. 2019;99:24-36.
doi:10.1016/j.ijrefrig.2018.11.038 .

Marković, Sasa, Jaćimović, Branislav M., Genić, Srbislav, Mihailović, Miloš, Milovančević, Uroš, Otović, Milena, "Air side pressure drop in plate finned tube heat exchangers" in International Journal of Refrigeration-Revue Internationale Du Froid, 99 (2019):24-36,
https://doi.org/10.1016/j.ijrefrig.2018.11.038 . .

TY  - GEN
AU  - Beljanski, Vladimir
AU  - Sever, Mark
AU  - Milovančević, Uroš
PY  - 2018
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/6005
AB  - Prilikom rada hladnjaka vazduha – isparivača na temperaturama nižim od 0°C dolazi do stvaranja leda na njegovoj površini što smanjuje njegovu efikasnost. U industrijskim amonijačnim postrojenjima čest je slučaj da se pregrejana para sa potisa kompresora koristi kao medijum za otapanje (zbog česte upotrebe izraza topli gas u praksi i njegove
jednostavnosti, u nastavku će se koristiti taj termin). U radu je opisan nov pristup otapanja toplim gasom gde se koristi
njegova celokupna toplota promene faze tokom trajanja procesa otapanja. Na taj način dolazi do uštede energije, direktnim smanjenjem potrošnje toplog gasa (manja količina gasa se vraća na usis kompresora,) kao i skraćenja vremena
otapanja. Polazna tačka pri analizi uštede energije je često primenjivani način otapanja amonijačnih isparivača toplim
gasom, kontrolisanog pomoću ventila konstantnog pritiska (pritisno kontrolisano otapanje).Ovaj princip otapanja je da
se proces kontroliše preko pritiska koji vlada u isparivaču tokom otapanja, što ne dovodi do potpune kondenzacije
toplog gasa. U početku otapanja celokupan protok toplog gasa će se kondenzovati, ali kako proces teče sve će se manja
količina kondenzovati, i pred kraj imamo situaciju da je najveći deo protoka čini topli gas (tj. vlažna para, velikog stepena suvoće) koji bespotrebno opterećuje kompresor. Kod otapanja sa potpunom kondenzacijom, proces se ne kontroli-
še preko pritiska na već preko stanja gasa na samom izlazu iz isparivača, to jest dozvoljava se da samo tečna faza
toplog gasa napusti isparivač. Ovo uzrokuje da kompresor relativno malu količinu gasa (nastalu ekspanzijom tečnosti
sa pritiska otapanja na usisni pritisak kompresora) treba ponovo da komprimuje i to umnogome manju ne samo u odnosu na pritisno otapanje već i u odnosu na protok kada je isparivač u režimu hlađenja. Na istom isparivaču i pri istim
uslovima rada, mereni su i upoređeni rezultati rada u obe metode otapanja kako bi se dobio merodavan zaključak.
Analizom merenih podataka vidi se da je protok toplog gasa manji kod nove metode otapanja kao i da je vreme otapanja skraćeno.
PB  - Beograd: SMEITS
T2  - Zbornik 49. Međunarodnog kongresa o KGH, 2018.
T1  - OTAPANJE AMONIJAČNIH ISPARIVAČA METODOM POTPUNE KONDENZACIJE TOPLOG GASA
EP  - 174
IS  - 1
SP  - 163
VL  - 49
UR  - https://hdl.handle.net/21.15107/rcub_machinery_6005
ER  - 

@misc{
author = "Beljanski, Vladimir and Sever, Mark and Milovančević, Uroš",
year = "2018",
abstract = "Prilikom rada hladnjaka vazduha – isparivača na temperaturama nižim od 0°C dolazi do stvaranja leda na njegovoj površini što smanjuje njegovu efikasnost. U industrijskim amonijačnim postrojenjima čest je slučaj da se pregrejana para sa potisa kompresora koristi kao medijum za otapanje (zbog česte upotrebe izraza topli gas u praksi i njegove
jednostavnosti, u nastavku će se koristiti taj termin). U radu je opisan nov pristup otapanja toplim gasom gde se koristi
njegova celokupna toplota promene faze tokom trajanja procesa otapanja. Na taj način dolazi do uštede energije, direktnim smanjenjem potrošnje toplog gasa (manja količina gasa se vraća na usis kompresora,) kao i skraćenja vremena
otapanja. Polazna tačka pri analizi uštede energije je često primenjivani način otapanja amonijačnih isparivača toplim
gasom, kontrolisanog pomoću ventila konstantnog pritiska (pritisno kontrolisano otapanje).Ovaj princip otapanja je da
se proces kontroliše preko pritiska koji vlada u isparivaču tokom otapanja, što ne dovodi do potpune kondenzacije
toplog gasa. U početku otapanja celokupan protok toplog gasa će se kondenzovati, ali kako proces teče sve će se manja
količina kondenzovati, i pred kraj imamo situaciju da je najveći deo protoka čini topli gas (tj. vlažna para, velikog stepena suvoće) koji bespotrebno opterećuje kompresor. Kod otapanja sa potpunom kondenzacijom, proces se ne kontroli-
še preko pritiska na već preko stanja gasa na samom izlazu iz isparivača, to jest dozvoljava se da samo tečna faza
toplog gasa napusti isparivač. Ovo uzrokuje da kompresor relativno malu količinu gasa (nastalu ekspanzijom tečnosti
sa pritiska otapanja na usisni pritisak kompresora) treba ponovo da komprimuje i to umnogome manju ne samo u odnosu na pritisno otapanje već i u odnosu na protok kada je isparivač u režimu hlađenja. Na istom isparivaču i pri istim
uslovima rada, mereni su i upoređeni rezultati rada u obe metode otapanja kako bi se dobio merodavan zaključak.
Analizom merenih podataka vidi se da je protok toplog gasa manji kod nove metode otapanja kao i da je vreme otapanja skraćeno.",
publisher = "Beograd: SMEITS",
journal = "Zbornik 49. Međunarodnog kongresa o KGH, 2018.",
title = "OTAPANJE AMONIJAČNIH ISPARIVAČA METODOM POTPUNE KONDENZACIJE TOPLOG GASA",
pages = "174-163",
number = "1",
volume = "49",
url = "https://hdl.handle.net/21.15107/rcub_machinery_6005"
}

Beljanski, V., Sever, M.,& Milovančević, U.. (2018). OTAPANJE AMONIJAČNIH ISPARIVAČA METODOM POTPUNE KONDENZACIJE TOPLOG GASA. in Zbornik 49. Međunarodnog kongresa o KGH, 2018.
Beograd: SMEITS., 49(1), 163-174.
https://hdl.handle.net/21.15107/rcub_machinery_6005

Beljanski V, Sever M, Milovančević U. OTAPANJE AMONIJAČNIH ISPARIVAČA METODOM POTPUNE KONDENZACIJE TOPLOG GASA. in Zbornik 49. Međunarodnog kongresa o KGH, 2018.. 2018;49(1):163-174.
https://hdl.handle.net/21.15107/rcub_machinery_6005 .

Beljanski, Vladimir, Sever, Mark, Milovančević, Uroš, "OTAPANJE AMONIJAČNIH ISPARIVAČA METODOM POTPUNE KONDENZACIJE TOPLOG GASA" in Zbornik 49. Međunarodnog kongresa o KGH, 2018., 49, no. 1 (2018):163-174,
https://hdl.handle.net/21.15107/rcub_machinery_6005 .

TY  - CONF
AU  - Černicin, Vladimir
AU  - Milovančević, Uroš
PY  - 2018
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/5050
AB  - Last few decades energy consumption in buildings increases. With a higher population and bigger requirements for comfort, energy needs grow exponentially. Concerning dispensation of the reserves of many energy fuels and energy ineffective work of HVAC systems, their optimization must be done. In such optimization, particular care should be taken not to damage thermal comfort.
In order to promote the improvement of energy efficiency in buildings, for example, the Safe House building in Belgrade was taken. A system of hot-water heating with radiators and a heat pump as an efficient source of heat is designed. Afterward, the energy performances of the building were determined and an analysis of the energy consumption and CO2 emissions was carried out for the implemented system.
PB  - Beograd: SMEITS
C3  - Zbornik 49. Međunarodnog kongresa o KGH
T1  - ENERGY ANALYSIS OF "SAFE HOUSE" BUILDING AND ENERGY IMPROVEMENT BY HEAT PUMP IMPLEMENTATION
UR  - https://hdl.handle.net/21.15107/rcub_machinery_5050
ER  - 

@conference{
author = "Černicin, Vladimir and Milovančević, Uroš",
year = "2018",
abstract = "Last few decades energy consumption in buildings increases. With a higher population and bigger requirements for comfort, energy needs grow exponentially. Concerning dispensation of the reserves of many energy fuels and energy ineffective work of HVAC systems, their optimization must be done. In such optimization, particular care should be taken not to damage thermal comfort.
In order to promote the improvement of energy efficiency in buildings, for example, the Safe House building in Belgrade was taken. A system of hot-water heating with radiators and a heat pump as an efficient source of heat is designed. Afterward, the energy performances of the building were determined and an analysis of the energy consumption and CO2 emissions was carried out for the implemented system.",
publisher = "Beograd: SMEITS",
journal = "Zbornik 49. Međunarodnog kongresa o KGH",
title = "ENERGY ANALYSIS OF "SAFE HOUSE" BUILDING AND ENERGY IMPROVEMENT BY HEAT PUMP IMPLEMENTATION",
url = "https://hdl.handle.net/21.15107/rcub_machinery_5050"
}

Černicin, V.,& Milovančević, U.. (2018). ENERGY ANALYSIS OF "SAFE HOUSE" BUILDING AND ENERGY IMPROVEMENT BY HEAT PUMP IMPLEMENTATION. in Zbornik 49. Međunarodnog kongresa o KGH
Beograd: SMEITS..
https://hdl.handle.net/21.15107/rcub_machinery_5050

Černicin V, Milovančević U. ENERGY ANALYSIS OF "SAFE HOUSE" BUILDING AND ENERGY IMPROVEMENT BY HEAT PUMP IMPLEMENTATION. in Zbornik 49. Međunarodnog kongresa o KGH. 2018;.
https://hdl.handle.net/21.15107/rcub_machinery_5050 .

Černicin, Vladimir, Milovančević, Uroš, "ENERGY ANALYSIS OF "SAFE HOUSE" BUILDING AND ENERGY IMPROVEMENT BY HEAT PUMP IMPLEMENTATION" in Zbornik 49. Međunarodnog kongresa o KGH (2018),
https://hdl.handle.net/21.15107/rcub_machinery_5050 .

TY  - JOUR
AU  - Genić, Srbislav
AU  - Jaćimović, Branislav M.
AU  - Milovančević, Uroš
AU  - Ivošević, Miloš
AU  - Otović, Milena
AU  - Antić, Milan I.
PY  - 2018
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/2941
AB  - The procedure for field testing of plate heat exchanger, considered as a black box, is presented in the paper. After the field measurements have been conducted, simple but unambiguous procedure has been used to establish heat performance parameters including the heat duty and fouling factor. Advantage of hereby presented method is that it can be used for analysis of any other similar heat transfer equipment.
PB  - Springer, New York
T2  - Heat and Mass Transfer
T1  - Thermal performances of a "black box" heat exchanger in district heating system
EP  - 873
IS  - 3
SP  - 867
VL  - 54
DO  - 10.1007/s00231-017-2182-5
ER  - 

@article{
author = "Genić, Srbislav and Jaćimović, Branislav M. and Milovančević, Uroš and Ivošević, Miloš and Otović, Milena and Antić, Milan I.",
year = "2018",
abstract = "The procedure for field testing of plate heat exchanger, considered as a black box, is presented in the paper. After the field measurements have been conducted, simple but unambiguous procedure has been used to establish heat performance parameters including the heat duty and fouling factor. Advantage of hereby presented method is that it can be used for analysis of any other similar heat transfer equipment.",
publisher = "Springer, New York",
journal = "Heat and Mass Transfer",
title = "Thermal performances of a "black box" heat exchanger in district heating system",
pages = "873-867",
number = "3",
volume = "54",
doi = "10.1007/s00231-017-2182-5"
}

Genić, S., Jaćimović, B. M., Milovančević, U., Ivošević, M., Otović, M.,& Antić, M. I.. (2018). Thermal performances of a "black box" heat exchanger in district heating system. in Heat and Mass Transfer
Springer, New York., 54(3), 867-873.
https://doi.org/10.1007/s00231-017-2182-5

Genić S, Jaćimović BM, Milovančević U, Ivošević M, Otović M, Antić MI. Thermal performances of a "black box" heat exchanger in district heating system. in Heat and Mass Transfer. 2018;54(3):867-873.
doi:10.1007/s00231-017-2182-5 .

Genić, Srbislav, Jaćimović, Branislav M., Milovančević, Uroš, Ivošević, Miloš, Otović, Milena, Antić, Milan I., "Thermal performances of a "black box" heat exchanger in district heating system" in Heat and Mass Transfer, 54, no. 3 (2018):867-873,
https://doi.org/10.1007/s00231-017-2182-5 . .

TY  - JOUR
AU  - Otović, Milena
AU  - Mihailović, Miloš
AU  - Genić, Srbislav
AU  - Jaćimović, Branislav M.
AU  - Milovančević, Uroš
AU  - Marković, Sasa
PY  - 2018
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/2870
AB  - This paper deals with heat exchangers having plain finned tubes in staggered (triangular) pattern. The objective of this paper is to provide the heat transfer and friction factor correlation which can be used in engineering practice. For this purpose, the experimental data of several (most cited) authors who deal with this type of heat exchangers are used. The new correlations are established to predict the air-side heat transfer coefficient and friction factor as a function of the Reynolds number and geometric variables of the heat exchanger - tube diameter, tube pitch, fin spacing, tube rows, etc. In those correlations the characteristic dimension in Reynolds number is calculated by using the new parameter - volumetric porosity. Also, there are given the errors of those correlations.
PB  - Springer, New York
T2  - Heat and Mass Transfer
T1  - Reconsideration of data and correlations for plate finned-tube heat exchangers
EP  - 2994
IS  - 10
SP  - 2987
VL  - 54
DO  - 10.1007/s00231-018-2328-0
ER  - 

@article{
author = "Otović, Milena and Mihailović, Miloš and Genić, Srbislav and Jaćimović, Branislav M. and Milovančević, Uroš and Marković, Sasa",
year = "2018",
abstract = "This paper deals with heat exchangers having plain finned tubes in staggered (triangular) pattern. The objective of this paper is to provide the heat transfer and friction factor correlation which can be used in engineering practice. For this purpose, the experimental data of several (most cited) authors who deal with this type of heat exchangers are used. The new correlations are established to predict the air-side heat transfer coefficient and friction factor as a function of the Reynolds number and geometric variables of the heat exchanger - tube diameter, tube pitch, fin spacing, tube rows, etc. In those correlations the characteristic dimension in Reynolds number is calculated by using the new parameter - volumetric porosity. Also, there are given the errors of those correlations.",
publisher = "Springer, New York",
journal = "Heat and Mass Transfer",
title = "Reconsideration of data and correlations for plate finned-tube heat exchangers",
pages = "2994-2987",
number = "10",
volume = "54",
doi = "10.1007/s00231-018-2328-0"
}

Otović, M., Mihailović, M., Genić, S., Jaćimović, B. M., Milovančević, U.,& Marković, S.. (2018). Reconsideration of data and correlations for plate finned-tube heat exchangers. in Heat and Mass Transfer
Springer, New York., 54(10), 2987-2994.
https://doi.org/10.1007/s00231-018-2328-0

Otović M, Mihailović M, Genić S, Jaćimović BM, Milovančević U, Marković S. Reconsideration of data and correlations for plate finned-tube heat exchangers. in Heat and Mass Transfer. 2018;54(10):2987-2994.
doi:10.1007/s00231-018-2328-0 .

Otović, Milena, Mihailović, Miloš, Genić, Srbislav, Jaćimović, Branislav M., Milovančević, Uroš, Marković, Sasa, "Reconsideration of data and correlations for plate finned-tube heat exchangers" in Heat and Mass Transfer, 54, no. 10 (2018):2987-2994,
https://doi.org/10.1007/s00231-018-2328-0 . .

TY  - CONF
AU  - Stojković, Milena
AU  - Gojak, Milan
AU  - Kosi, Franc
AU  - Milovančević, Uroš
PY  - 2017
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/5676
AB  - An analysis of the absorption refrigeration system with a solution of LiBr -water as the working  fluid driven by solar energy is presented in this paper. There are given the physi cal and  mathematical models of the refrigeration system including two different types of solar collectors  -  vacuum and flat plate. Calculations of the dynamic characteristics of the system for July of the  typical meteorological year for Belgrade are carried out and some of the most important technical  and energy parameters are analyzed. It is shown that the application of the vacuum collectors  provides many advantages over flat plate collectors.
PB  - Beograd: SMEITS
C3  - Zbornik 45. Međunarodnog kongresa o KGH
T1  - THE ANALYSIS OF ABSORPTION REFRIGERATION MACHINE DRIVEN BY SOLAR ENERGY
UR  - https://hdl.handle.net/21.15107/rcub_machinery_5676
ER  - 

@conference{
author = "Stojković, Milena and Gojak, Milan and Kosi, Franc and Milovančević, Uroš",
year = "2017",
abstract = "An analysis of the absorption refrigeration system with a solution of LiBr -water as the working  fluid driven by solar energy is presented in this paper. There are given the physi cal and  mathematical models of the refrigeration system including two different types of solar collectors  -  vacuum and flat plate. Calculations of the dynamic characteristics of the system for July of the  typical meteorological year for Belgrade are carried out and some of the most important technical  and energy parameters are analyzed. It is shown that the application of the vacuum collectors  provides many advantages over flat plate collectors.",
publisher = "Beograd: SMEITS",
journal = "Zbornik 45. Međunarodnog kongresa o KGH",
title = "THE ANALYSIS OF ABSORPTION REFRIGERATION MACHINE DRIVEN BY SOLAR ENERGY",
url = "https://hdl.handle.net/21.15107/rcub_machinery_5676"
}

Stojković, M., Gojak, M., Kosi, F.,& Milovančević, U.. (2017). THE ANALYSIS OF ABSORPTION REFRIGERATION MACHINE DRIVEN BY SOLAR ENERGY. in Zbornik 45. Međunarodnog kongresa o KGH
Beograd: SMEITS..
https://hdl.handle.net/21.15107/rcub_machinery_5676

Stojković M, Gojak M, Kosi F, Milovančević U. THE ANALYSIS OF ABSORPTION REFRIGERATION MACHINE DRIVEN BY SOLAR ENERGY. in Zbornik 45. Međunarodnog kongresa o KGH. 2017;.
https://hdl.handle.net/21.15107/rcub_machinery_5676 .

Stojković, Milena, Gojak, Milan, Kosi, Franc, Milovančević, Uroš, "THE ANALYSIS OF ABSORPTION REFRIGERATION MACHINE DRIVEN BY SOLAR ENERGY" in Zbornik 45. Međunarodnog kongresa o KGH (2017),
https://hdl.handle.net/21.15107/rcub_machinery_5676 .

TY  - GEN
AU  - Milovančević, Uroš
AU  - Otović, Milena
AU  - Franc, Kosi
PY  - 2017
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/5975
AB  - The objective of this paper is emphasizing the importance of maintaining the cooling systems from
the perspective of exploitation safety. The comparative analysis of the natural and synthetic refrigerants is
made. An overview of the location of possible operation problems is given. There are cited the most
common mistakes of industrial cooling installations that hinder maintenance and lead to incidents followed
by leaking in the exploitation conditions. The accent is put on parts of refrigeration installations at high
pressure in specific periods of operating (evaporator defrosting). Special attention should be paid on
monitoring of leaking in liquid lines (especially with over-flooded systems). Finally, the routes and
suggestions for better maintenance and safety improvements are given.
T2  - Proceedings of 2nd Maintenance Forum on Maintenance and Asset Management
T1  - MAINTENANCE AND RELIABILITY OF INDUSTRIAL REFRIGERATION SYSTEMS
EP  - 119
SP  - 112
UR  - https://hdl.handle.net/21.15107/rcub_machinery_5975
ER  - 

@misc{
author = "Milovančević, Uroš and Otović, Milena and Franc, Kosi",
year = "2017",
abstract = "The objective of this paper is emphasizing the importance of maintaining the cooling systems from
the perspective of exploitation safety. The comparative analysis of the natural and synthetic refrigerants is
made. An overview of the location of possible operation problems is given. There are cited the most
common mistakes of industrial cooling installations that hinder maintenance and lead to incidents followed
by leaking in the exploitation conditions. The accent is put on parts of refrigeration installations at high
pressure in specific periods of operating (evaporator defrosting). Special attention should be paid on
monitoring of leaking in liquid lines (especially with over-flooded systems). Finally, the routes and
suggestions for better maintenance and safety improvements are given.",
journal = "Proceedings of 2nd Maintenance Forum on Maintenance and Asset Management",
title = "MAINTENANCE AND RELIABILITY OF INDUSTRIAL REFRIGERATION SYSTEMS",
pages = "119-112",
url = "https://hdl.handle.net/21.15107/rcub_machinery_5975"
}

Milovančević, U., Otović, M.,& Franc, K.. (2017). MAINTENANCE AND RELIABILITY OF INDUSTRIAL REFRIGERATION SYSTEMS. in Proceedings of 2nd Maintenance Forum on Maintenance and Asset Management, 112-119.
https://hdl.handle.net/21.15107/rcub_machinery_5975

Milovančević U, Otović M, Franc K. MAINTENANCE AND RELIABILITY OF INDUSTRIAL REFRIGERATION SYSTEMS. in Proceedings of 2nd Maintenance Forum on Maintenance and Asset Management. 2017;:112-119.
https://hdl.handle.net/21.15107/rcub_machinery_5975 .

Milovančević, Uroš, Otović, Milena, Franc, Kosi, "MAINTENANCE AND RELIABILITY OF INDUSTRIAL REFRIGERATION SYSTEMS" in Proceedings of 2nd Maintenance Forum on Maintenance and Asset Management (2017):112-119,
https://hdl.handle.net/21.15107/rcub_machinery_5975 .