Answer the following three questions: (a) A refrigerator that operates on the id

Question

Answer the following three questions: (a) A refrigerator that operates on the ideal vapor- compression cycle with refrigerant-134a is to maintain the refrigerated space at -10 oC while rejecting heat to the environment at 25 oC. Select reasonable pressures for the evaporator and the condenser, and explain why you chose those values. (b) A heat pump that operates on the ideal vapor-compression cycle with refrigerant-134a is used to heat a house and maintain it at 22 oC by using underground water at 10 oC as the heat source. Select reasonable pressures for the evaporator and the condenser, and explain why you chose those values. (c) Do you think a heat pump system will be more cost-effective in New York or in Miami? Why?

Explanation / Answer

A) The minimum pressure that the refrigerant needs to be compressed to is the saturation pressure of the refrigerant at 30

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