EXPERIMENTAL ANALYSIS OF VARYING THE REFRIGERATION OIL PERCENTAGE IN COMPRESSOR ON THE PERFORMANCE OF VAPOUR COMPRESSION REFRIGERATION SYSTEM

A refrigerator is a machine which attains and maintains the temperature of a space below that of surroundings by transferring heat from the space to be cooled to the surroundings with the help of a compressor. Majority of the refrigerators works on the vapor compression refrigeration system which consists of components like compressors, condensers, expansion valve and evaporator. The performance of the system depends on the performance of all the components of the system. A compressor is an important device used to raise the pressure of refrigerant to a level at which it can condense by rejecting heat to the cooling medium in the condenser. In any compressors refrigeration oil is required to prevent the friction and heat generated with in it. In general all the domestic refrigerators have hermetically sealed compressors, for these refrigerator compressors having the refrigerant R-134a and it is required good properties of refrigeration oil is required to prevent the heat generated with in the compressors. This present experimental work focus on compressor work by varying the refrigeration oil percentage on a refrigerator system capacity of 165 lts. The compressor work and performance is calculated by varying refrigeration oil percentage used in it.