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A Bell-Coleman refrigerator operates between pressure limits of 1 bar and 6 bar. Air is drawn from the cold chamber at 10C, compressed and

A Bell-Coleman refrigerator operates between pressure limits of 1 bar and 6 bar. Air is drawn from the cold chamber at 10C, compressed and then it is cooled to 30C before entering the expansion cylinder. Expansion and compression follow the law pv.35 = constant. Calculate the theoretical C.O.P. of the system. 4 [CO3]

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