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4. In a refrigerator, the heat leak to the cold space is 200 Watt; the COP of the refrigeration system is 2.0. Evaluate the theoretical compressor power input and the heat pumped out to the environment. (10 marks) In the above, considering the heat transfer (leak) across the insulation from the surrounding to the refrigerated space, and neglecting the entropy increase at the refrigerator insulations, evaluate the total (sum) increase of entropy due to heat interaction between the surrounding and the refrigerator cold space. (10 marks)