Exergy analysis and performance evaluation of a vapor compression refrigeration system using R-134a, R-600a, and R-125.

This paper presents an exergy analysis of a vapor compression refrigeration system where total exergy loss, exergetic efficiency, coefficient of performance, and compressor power input were calculated to assess system performance. The analysis was initially validated using a MATLAB model with refrigerants R-134a, R-12, and R-22 from existing literature. In the study that followed, refrigerants R-134a, R-600a, and R-125 were tested under various evaporator and condenser temperatures while maintaining one of the parameter constants in each case. The results demonstrate clear trends in exergy losses within key system components, allowing for a detailed understanding of how temperature changes affect system efficiency and performance while also providing insights on a comparative analysis of refrigerants used to improve system optimization, aiding in the design of more efficient refrigeration systems.