Calculate the coefficient of performance of refrigerator, Mechanical Engineering

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(a) List out the advantages of air refrigeration system besides of vapour refrigeration system .

(b) A vapour Compression refrigerator uses R-40 and acts between temperature - 10oC & 45oC. At entry to the compressor, the refrigerant is dry saturated and after compression it acquires a temperature of 60oC. Determine the C.O.P. of the refrigerator. The properties of R-40 I given below in table :

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