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16 May, 21:32

During each cycle, a refrigerator ejects 610 kJ of energy to a high-temperature reservoir, and takes in 505 kJ of energy from a low-temperature reservoir. (a) Determine the work done on the refrigerant in each cycle. kJ (b) Determine the coefficient of performance of the refrigerator.

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  1. 16 May, 21:48
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    Answer

    A. the work done on the refrigerant in each cycle is 105kJ

    B the coefficient of performance of the refrigerator is 4.8

    Explanation

    Given data

    Work done at high temperature T2 Qh=610kJ

    Work done at low temperature T1 Ql=505kJ

    We know that the net work done by the refrigerator is expressed as

    Wnet = Qh-Ql

    =610-505

    =105kJ

    Also we know that the coefficient of performance is expressed as

    COP = Ql/Wnet

    COP = 505/105

    = 4.8
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Home » Physics » During each cycle, a refrigerator ejects 610 kJ of energy to a high-temperature reservoir, and takes in 505 kJ of energy from a low-temperature reservoir. (a) Determine the work done on the refrigerant in each cycle.
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