Journal
INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID
Volume 31, Issue 6, Pages 998-1005Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ijrefrig.2007.12.015
Keywords
refrigeration system; compression system; modelling; COP; exergy; efficiency; R502; R404A; R507A
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This paper presents a detailed exergy analysis of an actual vapour compression refrigeration (VCR) cycle. A computational model has been developed for computing coefficient of performance (COP), exergy destruction, exergetic efficiency and efficiency defects for R502, R404A and R507A. The present investigation has been done for evaporator and condenser temperatures in the range of -50 degrees C to 0 degrees C and 40 degrees C to 55 degrees C, respectively. The results indicate that R507A is a better substitute to R502 than R404A. The efficiency defect in condenser is highest, and lowest in liquid vapour heat exchanger for the refrigerants considered. (C) 2008 Elsevier Ltd and IIR. All rights reserved.
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