EXPERIMENTAL TESTING ON REFRIGERANT BLEND USING VCR SYSTEM

A refrigerant is a substance used in a heat cycle usually for enhancing efficiency, by a reversible phase transition from a liquid to a gas. Nowadays single refrigerants are used in commercial refrigeration system. Here we are using two different refrigerant mixed together and to improve the co-efficient of performance. R22 (Chloro di fluoro methane) and R134a (tetra fluoro ethane) are taken as test fluid. R134a and R22 is an inert gas used primarily as a “high-temperature” refrigerant for domestic refrigeration and automobile air conditioners. Selection of efficient and safe refrigerant blend for future has been attempted in this project through discussions. In order to improve the performance level of a refrigerant blends the different blending ratio are analyzed experimentally by using vapour compression refrigeration system. The refrigerant blend which gives higher co-efficient of the performance have been taken for result discussion. The new blend gives performance better than the existing individual refrigerant. Performance parameters like refrigerant mass flow rate, refrigerant capacity, compressor power, C.O.P were analyzed at varying conditions. All the practical Performance parameters of R22 and R134a are compared by graphical representation. All the results were compared to find the improvement in co-efficient of performance.