Journal of Energy Conversion

en اCOP/exergy analysis of a heat pump coupled with scroll compressor systems at different wintry ambient temperatures COP/exergy analysis of a heat pump coupled with scroll compressor systems at different wintry ambient temperatures ترمودینامیک Thermodynamics پژوهشي Research <div dir="ltr" style="padding: 0cm 0cm 1pt; text-align: justify; border-bottom-color: windowtext; border-bottom-width: 1pt; border-bottom-style: solid;"><a name="_Hlk182221362">In this work, the COP/exergy analysis of a Heat Pump System Coupled with a Scroll Compressor (HPSCSC) is investigated. The experimental data was used to analyse the energy/exergy of HPSCSC at different Relative Intermediate Pressure (RIP) and wintry temperature to make clear the optimum operating condition based on more COP and extra capability. Moreover, an Energy Input Capacity (EIC) was defined to suggest the optimum operating of the system. The investigation of irreversibility in the components of the heat pump shows that the most important losses are generated in the Compressor (65-80%) and the condenser (12-15%).Also, the results confirm that even at very low ambient temperatures (-15oC) -where the COP drops-, the use of less RIP leads to an acceptable EIC and improvement in COP. The results further indicated that when the RIP exceeds 1.2, the energy transfer from the condenser remains relatively constant across various winery temperatures. Furthermore, in this study, a relation for the optimum RIP against wintry ambient temperature for an acceptable EIC and higher COP has been presented, which falls between 1.1 and 1.5.ا</a></div> <div dir="ltr" style="text-align: justify;">  </div> <a name="_Hlk182221362"></a> <div style="padding: 0cm 0cm 1pt; text-align: justify; border-bottom-color: windowtext; border-bottom-width: 1pt; border-bottom-style: solid;"><a name="_Hlk182221362">In this work, the COP/exergy analysis of a Heat Pump System Coupled with a Scroll Compressor (HPSCSC) is investigated. The experimental data was used to analyse the energy/exergy of HPSCSC at different Relative Intermediate Pressure (RIP) and wintry temperature to make clear the optimum operating condition based on more COP and extra capability. Moreover, an Energy Input Capacity (EIC) was defined to suggest the optimum operating of the system. The investigation of irreversibility in the components of the heat pump shows that the most important losses are generated in the Compressor (65-80%) and the condenser (12-15%).Also, the results confirm that even at very low ambient temperatures (-15oC) -where the COP drops-, the use of less RIP leads to an acceptable EIC and improvement in COP. The results further indicated that when the RIP exceeds 1.2, the energy transfer from the condenser remains relatively constant across various winery temperatures. Furthermore, in this study, a relation for the optimum RIP against wintry ambient temperature for an acceptable EIC and higher COP has been presented, which falls between 1.1 and 1.5.</a></div> heat pump coupled with scroll compressor systems, wintry ambient temperatures, exergy analysis, COP, Relative Intermediate Pressure heat pump coupled with scroll compressor systems, wintry ambient temperatures, exergy analysis, COP, Relative Intermediate Pressure 91 103 http://jeed.dezful.iau.ir/browse.php?a_code=A-10-348-2&slc_lang=en&sid=1 Mahdi Norouzi مهدی نوروزی norozi347@yahoo.com 10031947532846005396 10031947532846005396 Yes Department of Mechanical Engineering, Larestan University, Lar, Iran. گروه مهندسی مکانیک، دانشگاه لارستان، لار، ایران Mohsen Ghazikhani محسن قاضیخانی ghazikhani@um.ac.ir 10031947532846005397 10031947532846005397 No Department of Mechanical Engineering, School of Engineering, Ferdowsi University of Mashhad, Mashhad, Iran. گروه مهندسی مکانیک، دانشگاه فردوسی مشهد، مشهد، ایران