Question-2: By steadily circulating R22 through passages in the walls of the freezer, a refrigerator maintains...

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Question-2: By steadily circulating R22 through passages in the walls of the freezer, a refrigerator maintains the freezer compartment at 4C when the air surrounding the refrigerator is at 25C. The rate of heat transfer from the freezer compartment to the refrigerant is 1000 kW and the power input required to operate the refrigerator is 600 kW. (Each correct answer is 8p, total: 32p.) Surroundings at 25C QH Refrigerator Freezer at 4C- Q = 1000 kW W = 600 kW cycle a) Determine the COP of the refrigerator. b) Compare with the COP of a reversible refrigeration cycle operating between reservoirs at the same two temperatures. c) Evaluate if this cycle is possible and state the reason. d) Evaluate the claim of an inventor saying that this system can also work with a power input of 120 kJ. Question-2: By steadily circulating R22 through passages in the walls of the freezer, a refrigerator maintains the freezer compartment at 4C when the air surrounding the refrigerator is at 25C. The rate of heat transfer from the freezer compartment to the refrigerant is 1000 kW and the power input required to operate the refrigerator is 600 kW. (Each correct answer is 8p, total: 32p.) Surroundings at 25C QH Refrigerator Freezer at 4C- Q = 1000 kW W = 600 kW cycle a) Determine the COP of the refrigerator. b) Compare with the COP of a reversible refrigeration cycle operating between reservoirs at the same two temperatures. c) Evaluate if this cycle is possible and state the reason. d) Evaluate the claim of an inventor saying that this system can also work with a power input of 120 kJ.