Abstract
This study involves theoretical investigations made on a simple vapour compression system working with R152a/R1270/R600 refrigerant mixture. The properties of the mixtures along with that of R22 were obtained from REFPROP 7.0 software for the operating temperature ranging from 0 to 60 °C. CYCLE_D software has also been used for finding the proposed refrigerant mixture’s performance. Test results from theoretical study presented that the coefficient of performance of the HFCs and HC refrigerant mixtures being 2.1% higher than that of R22. Compressor power of the mixtures was 1.8% less than that of R22 at 7 °C evaporator temperature and 53 °C condenser temperature. Mixture of the refrigerants showed higher mass flow rate than that of R22, and also its deviation was 36% from R22. Compressor shell outlet temperature of the refrigerant mixtures was 9.6% lower than R22 at 7 °C evaporator temperature and 53 °C condenser temperature. In this study, the selected ternary refrigerant mixture was found to provide better energy efficiency, and hence, it can be used as a suitable replacement for HCFC 22 in residential air conditioners.
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