Energy Efficiency Improvement for the Mobile Air Conditioning Systems

Onan C. , Erdem S.

ECRES2021, İstanbul, Turkey, 21 - 23 April 2021, pp.391-395

  • Publication Type: Conference Paper / Full Text
  • City: İstanbul
  • Country: Turkey
  • Page Numbers: pp.391-395


R1234yf is a synthetic HFO refrigerant co-developed as a successor to R134a for automotive air-conditioning applications. So that in this study, alternatives to the R134a refrigerant, that has just been removed from the newly produced devices, have been examined. The performance of the cooling processes of R1234yf and R744 refrigerant gases was compared with that of R134a. R1234yf’s global warming potential (GWP) is ultra-low, with a rating of less than 4.4. A refrigeration cycle analysis was performed for a 10 kW cooling load. These analyzes were repeated at different condenser or gas cooler outlet temperatures (30oC, 35oC, 40oC) and constant evaporator temperatures (7.5oC). And then heating mode is calculated for these refrigerants. Cycle’s technical specifications are determined as between 0°C - 10°C for the evaporator temperature and 50°C for the condenser or gas cooler outlet temperature.