Thermodynamic analysis of using with low GWP refrigerants alternative of R404A in vapor compression refrigeration system

In this study, thermodynamic analysis of the vapor compression cooling system using R404A alternative refrigerants was performed. R454A, R454C, R455A, R457A and R459B refrigerants, which have low global warming potential (GWP) values, were used in the vapor compression cooling system. At different evaporator and condenser temperatures, coefficient of performance (COP) of refrigerants, energy consumed in the compressor, mass flow rate, exergy destruction and exergy efficiency were examined. As a result of the analysis, the highest COP value was found to be 14.232 in the system operating with R457A refrigerant when the condenser temperature was 30°C and the evaporator temperature was 15°C. The highest exergy efficiency was found to be 0.594 in the system operating with R457A refrigerant when the condenser temperature was 30°C and the evaporator temperature was -5°C. It was observed that the highest exergy destruction occurred in the evaporator of the cooling system. As a result, it has been determined that R457A is one of the most suitable alternative refrigerants that can be used instead of R404A in terms of COP and exergy efficiency.