Naslov
Thermodynamic Analysis of an Air Source Compression Heat Pump

Autori
Torbarina, Fran ; Lenić, Kristian ; Bonefačić, Igor

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Book of Abstracts of the 4th annual conference for doctoral sudents of engineering and technology My First Conference / Jovančević, Sanja D. ; Franulović, M. ; Vukelić, G ; Kirinčić, M ; Liović, D. ; Zlatić, M. - Rijeka, 2020, 37-37

ISBN
978-953-8246-18-0

Skup
4th edition of annual conference for doctoral students of engineering and technology „MY FIRST CONFERENCE“

Mjesto i datum
Rijeka, Hrvatska, 24.09.2020

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Domaća recenzija

Ključne riječi
Heat pump, Thermodynamic analysis, Energy and exergy analyses

Sažetak
The aim of this paper is to evaluate air source heat pump efficiency using energy and exergy analyses for different evaporating temperatures and compressor isentropic efficiencies. For each case of different evaporating temperature and compressor isentropic efficiency, the heat pump coefficient of performance (COP), irreversibility and exergy efficiency are calculated [1]. Studied range of evaporating temperatures was from -12 °C to -4 °C and studied range of isentropic efficiencies was from 0.85 to 0.95. Both energy and exergy analyses showed that higher COP and higher exergy efficiency are obtained when the compressor isentropic efficiency is higher, but concerning the evaporation temperature the two analyses yielded opposite results. The energy analysis showed that for higher evaporation temperature, the heat pump COP i.e. the heat pump energy efficiency will be higher, while the exergy analysis showed that the heat pump exergy efficiency will be lower and the irreversibility of the process will be higher. Within the studied range of different evaporating temperatures, the heat pump COP changed up to 20%, while the exergy efficiency changed up to 2%, so it can be concluded that the COP is a suitable criterion for evaluating thermodynamic efficiency of heat pumps.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo, Temeljne tehničke znanosti

POVEZANOST RADA