Analysis of Alternative Refrigerants to R22 for Air-Conditioning Applications at Various Evaporating Temperatures

摘要

This paper presents the simulation results of a 1.5 ton capacity room air conditioning system with some selected refrigerants that have been assessed for their suitability as alternative refrigerants to R22 for air conditioning applications. The refrigerants with zero Ozone depletion potential only are selected in this study. The performance of selected refrigerants viz, R22, R134a, R404A, R407C, R410A, R507A, R290 and R600a is considered in the present analysis. The thermodynamic analysis of these refrigerants has been carried out on these selected refrigerants using COOLPACK software. The analysis mainly focuses on obtaining results of parameters with fixed condenser temperature but with variable evaporator temperatures. The parameters like heat rejection rate, mass flow rate of refrigerant, displacement volume, power input, discharge temperature, cop, saturation pressure and pressures ratio are analyzed. The thermodynamic analysis of eight selected refrigerants is carried out using the simulation software COOL PACK version 1.49 and a comparative study of the different refrigerants is made.