A review on analysis of Vapour Compression Refrigeration System (VCRS) for its performance using different ecofriendly refrigerants and nanofluids

Abstract

From last many years Vapour Compression Refrigeration system (VCRS) was incorporated in most of refrigeration systems because of its favourable features like higher Coefficient of Performance (COP), higher Refrigerating Effect (RE) etc. VCRS Systems have wide range of applications including domestic and Industrial systems. In any refrigeration system refrigerant is the primary working fluid for absorbing as well as transmitting heat. Domestic and industrial refrigeration systems employ HFC’s due to their excellent thermodynamic properties but Kyoto protocol categorized HFCs as global warming gases due to their higher value of GWP (1300). To meet the needs of global standards and eco-friendliness, it is very essential to find out the alternative refrigerants to HFCs. Alternate refrigerants to be used should fulfil the required characteristics like energy efficient heat transfer, higher refrigerating effect, higher condenser heat rejection rate and higher COP as well as it should have lower GWP and zero ODP. From Research, it was found that Mixed Refrigeration Systems or blends are thermally efficient and different types of nanofluids can be utilized along with R134a for improving and achieving excellent performance of a Refrigeration system.