Abstract
Under the Kyoto protocol, all automobile air conditioning systems should use low global warming potential (GWP) refrigerant. Kyoto committee has defined low refrigerants which have GWP less than 150. Currently, popular R134a refrigerant has a GWP of 1430, which is very high. Newly researched R1234yf refrigerant has a GWP of 4. The present paper compares the energy analysis of the R1234yf refrigerant system with the R134a refrigerant system. For developing a computation energy analysis model, engineering equation solver (EES) software has been used. Refrigeration effect, compressor work, coefficient of performance (COP) and 2nd law of efficiency are compared based on evaporator temperature, condenser temperature, degree of superheating, degree of subcooling and isentropic efficiency. This study proposes that R1234yf refrigerant will be a suitable replacement for R134a refrigerant.
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