A two stage cascade refrigeration system (see Fig 93) operates between TC 210 K and TH 305 K Intermediate temperatures are T 'C 255 K and T 'H 260 K Coefficients of performance of each stage are 65 of the corresponding value for a Carnot refrigerator Determine for the real cascade, and compare it with that for a Carnot refrigerator operating between TV and TH

Question: A two-stage cascade refrigeration system (see Fig. 93) operates between TC = 210 K and TH = 305 K. Intermediate temperatures are T'C = 255

A two-stage cascade refrigeration system (see Fig. 93) operates between TC = 210 K and TH = 305 K. Intermediate temperatures are T'C = 255 K and T'H = 260 K. Coefficients of performance ω of each stage are 65% of the corresponding value for a Carnot refrigerator. Determine for the real cascade, and compare it with that for a Carnot refrigerator operating between TV and TH.

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