Problem 1 on Bell Coleman air refrigeration cycle Refrigeration and air conditioning

A refrigerator working on Bell Coleman cycle operates between pressure limits of 1.05 bar and 8.5 bar. Air is drawn from cold chamber at 10°C , compressed and then it is cooled to 30°C before entering the expansion cylinder. The expansion and compression following the law pv^1.3=Constant . Determine theoretical COP of the system

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