Improving and Comparing the Coefficient of Performance of Domestic Refgirator by using Refrigerants R134a and R600a

The main objective in present dissertation has been focused on alternative refrigerant to conventional CFC refrigerant, CFC like R12, R22, R134a, etc… are not eco friendly. The emission of these refrigerants causes the depletion of ozone layer etc…. Hence to avoid above difficulty the alternative of refrigerant in the form of R600a has been choosing. R600a refrigerant are natural refrigerant consist of hydrocarbon. In the present work, the performance of the domestic refrigerator is determined using R600a (Isobutane) and comparison with R134a (Tetrafluoro-ethane) as the part of project work the refrigerator setup consists of evaporator, compressor, condenser and expansion valve are chosen with suitable specification. Also in the present work an attempt has been made to improve the coieffiecnt of performance (cop) of the system, by incorporating a heat exchanger before admitting refrigerant into the compressor. Thus the compressor work reduces and it may results increase the performance of the refrigeration system.