The effect of refrigerant outlet temperature for exergy efficiency of heat pumps using CO2 CO2 soǧutucu akişkanli isi pompalarinda soǧutucu akişkan çikiş sicakliǧinin ekserji̇ verẏmi̇ne etki̇si̇

ÖZGÜR A. E., BAYRAKÇI H. C.

Isi Bilimi Ve Teknigi Dergisi/ Journal of Thermal Science and Technology, vol.30, no.1, pp.73-78, 2010 (SCI-Expanded, Scopus, TRDizin) identifier

  • Publication Type: Article / Article
  • Volume: 30 Issue: 1
  • Publication Date: 2010
  • Journal Name: Isi Bilimi Ve Teknigi Dergisi/ Journal of Thermal Science and Technology
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, TR DİZİN (ULAKBİM)
  • Page Numbers: pp.73-78
  • Keywords: Co2, Efficiency, Exergy, Heat pump, Transcritical
  • Isparta University of Applied Sciences Affiliated: No

Abstract

Because of the global warming, usage of natural refrigerants is being common in large scale. CO2 cooling systems especially preferred at vehicle air conditioners and hot water heat pump applications. In this study, a single stage heat pump using CO2 refrigerant and having transcritical cycle is theoretically modeled. The effect of gas cooler outlet temperature for exergetic efficiency of heat pump is presented. Range of evaporating temperature is selected between -10 and +10 °C values. Calculations are made by software (EES-Engineering Equation Solver), and results are presented graphically. © 2010 TIB1D Printed in Turkey.