IMPROVEMENT OF COP AND ENERGY EFFICIENCY RATIO OF DOMESTIC REFRIGERATOR BY USING ADDITIVE IN REFRIGERANT R134A

Abstract: Refrigerator-freezers are one of the major energy consuming appliances in the household environment, and so more attention should be paid in improving their efficiency throughout the world. A certain additives are provided by a company Infinity HVAC, which can be used in the refrigeration and air conditioning system. These additives are a chemical solution which helps in improving the performance of the system and reducing the energy consumption of the system by removing oil fouling from the inner surface of the evaporator and condenser. The system used in this work is 165 litre domestic refrigerators with R134a as a working refrigerant. Experimental results have shown that the COP is increased by 7 % and energy consumption is increased by 4.48 %.

Keywords: Performance additive, Refrigerator, COP, Energy efficiency ratio, R134a.