Thermal analysis of vapour compression refrigeration system with R152a and its blends R429A, R430A, R431A and R435A

This paper presents the analysis results of R429A, R430A, R431A and R435A as drop in substitute for R152a at various evaporating temperature with condenser temperature 30°C, 40°C and 50°C. A theoretical study of thermodynamic properties such as pressure, density, and specific volume, latent heat of vaporization compression index, and critical values are done. The theoretical performance of vapour compression refrigeration system with R152a, R429A, R430A, R431A and R435A was done and their results are compared. The effects of the main parameters of performance analysis such as refrigerating effect, compressor work, coefficient of performance, volumetric refrigerating capacity, discharge temperature, pressure ratio, condenser duty, compressor power, refrigerating mass flow are analyzed for various evaporating temperatures. The compressor power required for the refrigeration during analysis with R152a and its blends were observed. The results shows that the refrigerants R435A consumes 1.098% less compressor power than that of R152a.The COP, Refrigerating effect for R435A is 1.229%,32.198% higher than R152a respectively . The refrigerant mass flow is decreased by 24.353% while using R435A substitute to R152a. Other results obtained in the analysis show a positive indication of using R435A as refrigerant in vapour compression refrigeration system substitute to R152a. Index Terms —R152a, R429A, R430A, R431A, R435A, vapour compression Refrigeration ——————————  ——————————