Question: A refrigerator using helium gas operates on the reversed cycle shown in FIGURE CP21.71. What are the refrigerator??s (a) Coefficient of performance (b) Power input

A refrigerator using helium gas operates on the reversed cycle shown in FIGURE CP21.71. What are the refrigerator??s

p (kPa) Adiabats 150- -23C -73C 0+ 20 40 60 80 100

(a) Coefficient of performance

(b) Power input if it operates at 60 cycles per second?

p (kPa) Adiabats 150- -23C -73C 0+ 20 40 60 80 100 V (cm) FIGURE CP21.71

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