The performance analysis of CO2 mobile air conditioning system with various gas cooler pressure and outlet temperature of CO2 from the gas cooler Deǧi̇şi̇k gaz soǧutucu çikiş sicakliklari ve basinçlarii̇çi̇n bi̇r CO2 soǧutkanli mobi̇l kli̇manin performansinini̇́ ncelenmesi̇

ÖZGÜR A. E.

Journal of the Faculty of Engineering and Architecture of Gazi University, vol.23, no.1, pp.181-185, 2008 (Scopus, TRDizin) identifier

  • Publication Type: Article / Article
  • Volume: 23 Issue: 1
  • Publication Date: 2008
  • Journal Name: Journal of the Faculty of Engineering and Architecture of Gazi University
  • Journal Indexes: Scopus, TR DİZİN (ULAKBİM)
  • Page Numbers: pp.181-185
  • Keywords: Alternative refrigerant, CO2, Gas cooler, Mobile air-conditioning, Performance
  • Isparta University of Applied Sciences Affiliated: No

Abstract

Because of global warming reality, CO2 (R-744) can be used an alternative refrigerant for mobile airconditioning systems. In this study, the coefficient of cooling performance (COP) and energy requirement for operating of a mobile CO2 air-conditioning system compressor were investigated. In the analysis, various gas cooler pressure and outlet temperature from the gas cooler of the refrigerant were used as variable parameters. The eaporation temperature of CO2 and superheating value of CO2 in the internal heat exchanger were selected as + 5 °C and 10 °C respectively. The compressor isentropic efficiency was used as 0.7. The pressure losses in the system components were neglected. A computer program was used to obtain solutions of the equations and properties of CO2. It was concluded that, the COP values of the system reach a maximum value with variation of the gas cooler pressure and outlet temperature from the gas cooler of the refrigerant. The COP value variation speed with outlet temperature from the gas cooler of the refrigerant slowed down with the increased gas cooler pressure. The results were presented with diagrams.