Author : Shridhar Vasant Raskar and Sachin Vyasrao Mutalikdesai

The 80% Indians domestic refrigerators use R134a as refrigerant due to its excellent thermodynamic and thermo physical properties. However, because of higher GWP (1300) its impact on environment is dangerous. Due to such hazardous impact, it is necessary to find out an alternative refrigerant for R134a without affecting performance of vapor compression system. This paper investigate performance of vapor compression refrigeration system with alternative eco-friendly refrigerants such as R32, R134a, R152a, R290, R1270, R600a, RE170, R290.Vapor compression system work on four processes compression, evaporation, expansion and condensation. During analysis, various parameters like evaporating pressure, pressure ratio, and power per ton of refrigeration, volumetric cooling capacity, compression work and coefficient of performance are considered. R152a and RE170 are better alternative refrigerants to R134a. These refrigerants shows 4.65% and 6.27% more COP than that of conventional R134a refrigerant respectively.

Keywords: Refrigerants, ozone depletion potential, global warming potential, coefficient of performance

Article published in International Journal of Current Engineering and Technology, Vol.6, No.5 (Oct-2016)