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Abstract
A modified vapor compression refrigeration system using ejector as an expansion device has been studied in this paper. The new system gives higher cooling effect and requires lesser compressor work than typical vapor compression system under similar operating conditions. Exergy analysis has been done to determine the scope of performance improvement in various components of the modified system. Three refrigerants namely R134a, R407C and R410A have been taken for the analysis due to their wide usage in the commercial refrigeration and air conditioning systems. The system is found to have highest 2nd law efficiency of 53.32% with R134a at 35°C condenser temperature and 5°C evaporator temperature. The increase in condenser temperature increases the total irreversibility of the system. The maximum exergy destruction has been observed in condenser for all the refrigerants. The analysis has been carried out in Engineering Equation Solver.
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