Abstract
This article concerned with the exergy analysis of different components of vapour compression refrigeration system and investigates the losses occurred in overall cycle as well as different stages of processes due to exergy destruction in the system based on evaporator temperature variation. The present article explained the nature of three different refrigerants R-134a, R-12 and R-22 on the basis of exergetic efficiency and total irreversibility as the performance parameters with evaporator temperature variation. REFPROP software used for calculation of different specified points of state and others thermophysical properties of the given refrigerants. Based on the exergy analysis, exergy loss decreases as the evaporator temperature rises and second law efficiency decreases along with the evaporator temperature rise. Exergy loss for R-134a is maximum and R-12 shows minimum and R-22 is in between but closed to R-12. The second law efficiency for R-12 is maximum, followed by R-22 and minimum for R-134a.
Published Version
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