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Your search keyword '"Rudonja, Nedžad"' showing total 2 results
Start Over Author "Rudonja, Nedžad" Topic coefficient of performance
2 results on '"Rudonja, Nedžad"'

1. Thermodynamic Analysis of a Cascade Heat Pump Incorporated in High-Temperature Heating System.

Author

Rudonja, Nedžad, Gojak, Milan, Zlatanović, Ivan, and Todorović, Ružica

Subjects
*HEAT pumps, *HEATING, *HEAT pump efficiency, *THERMODYNAMIC cycles, *PROPERTIES of fluids, *HOT water
Abstract

In this article is presented thermodynamic analysis of a cascade heat pump system designed for using in high-temperature heating systems. The own thermodynamic model was built by using properties of working fluids from the CoolProp base. The cascade heat pump was designed to use ambient air as heat source with temperature tamb= -20 °C and for heating water in the high-temperature heating system up to 70 °C. The projected heating capacity of the cascade heat pump was 100 kW. The coefficient of performance (COP) of the cascade heat pump system due to use of different working mediums combinations in cycles of the cascade heat pump was investigated. For the best combination of working fluids (mediums) sub-cooling, super-heating, pressure loss in compressor's suction line, as well as exergy efficiency of the heat pump were analysed as a function of the mean temperature of the cascade heat exchanger. [ABSTRACT FROM AUTHOR]

Published
2020
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2. Primena toplotnih pumpi u sistemima za sušenje prehrambenih proizvoda

Author

Zlatanović, Ivan, Rudonja, Nedžad, and Gligorević, Kosta

Subjects
heat pump, koeficijent grejanja, energetska efikasnost, toplotna pumpa, sušenje, drying, coefficient of performance, energy efficiency
Abstract

Heat pump drying systems application has great potential and provides economical and ecological benefit in food industry. Many researchers deal with a problem of investigating heat pump drying system performance. However, there have not been any massive applications of these systems on farms and in food industry in Republic of Serbia, considering huge effort of their promotion. This paper analyze performances of typical drying systems configurations from the COP and specific compressor work point of view, considering different outside influences and operating conditions. . Upotreba toplotnih pumpi obećava ekonomski i ekološki benefit i veliki broj istraživanja se bavi njihovom primenom u sistemima sušenja prehrambenih proizvoda. Međutim, do njihove masovnije upotrebe u Republici Srbiji na farmama i u industriji još uvek nije došlo uprkos uloženim naporima i promovisanju. U ovom radu analizirane su performanse rada tipičnih konfiguracija sistema sušenja sa stanovišta postizanja maksimalnog koeficijenta grejanja pod određenim spoljnim uticajima i u zavisnosti od željenog režima sušenja. .

Published
2011

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