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Discussion :: Refrigeration and Air Conditioning

  1. The ratio of heat extracted in the refrigerator to the work-done on the refrigerant is called

    2. A.

     Coefficient of performance of refrigeration
    B.

     Coefficient of performance of heat pump
    C.

     Relative coefficient of performance
    D.

     Refrigerating efficiency

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    Answer : Option A

    Explanation :

    The efficiency of a refrigerator or heat pump is given by a parameter called the coefficient of performance (COP).
    The COP of a refrigerator is given by the following equation:
    COP = Desired Output/Required Input
    = Cooling Effect/Work Input
    = QL/W.

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