A finite time analysis of a cascade refrigeration system using alternative refrigerants

The performance of a three stage cascade refrigeration systems employing two different environmental friendly refrigerants has been examined with a view to determine the best combination of modern environmental friendly refrigerants to produce the minimum power consumption for a given refrigeration rate. The refrigeration system examined employed two stages on the high-pressure side and a single stage on the low-pressure side. The effect of overlap temperature and the efficiency of the compression processes feature in the analysis.