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Performance Analysis of Vapour Compression Refrigeration System with R502 and its Substitutes


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Abstract


In this paper an exergy analysis of a vapour compression refrigeration cycle has been presented. A computational model has been developed for computing coefficient of performance (COP), exergy destruction, exergetic efficiency and efficiency defects for R502 and its substitutes. This study has been done for evaporator and condenser temperatures in the range of -100C to 80C and 400C to 550C, respectively. In the range studied which is suitable for beverage coolers as well as storing of seafood, the results indicate that R507A is a better substitute to R502 than R404A. The efficiency defect in evaporator is highest, and lowest in liquid vapour heat exchanger for the refrigerants consideredIn this paper an exergy analysis of a vapour compression refrigeration cycle has been presented. A computational model has been developed for computing coefficient of performance (COP), exergy destruction, exergetic efficiency and efficiency defects for R502 and its substitutes. This study has been done for evaporator and condenser temperatures in the range of -100C to 80C and 400C to 550C, respectively. In the range studied which is suitable for beverage coolers as well as storing of seafood, the results indicate that R507A is a better substitute to R502 than R404A. The efficiency defect in evaporator is highest, and lowest in liquid vapour heat exchanger for the refrigerants considered
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