• # question_answer A condenser of refrigeration system rejects heat at rate of 120 kW. While its compressor consumes a power of 30 kW. The coefficient of performance of the system would be: A) 1/4                               B) 1/3C) 3                                 D) 4

Solution :

${{Q}_{r}}=120\,\,kW,$ ${{W}_{c}}=30\,\,kW,$ $COP=\frac{{{Q}_{r}}}{{{W}_{c}}}=\frac{120}{30}=4$

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