Railways Technical Ability Refrigeration and Air-Conditioning Question Bank Refrigeration and Air-Conditioning

  • question_answer The power (kW) required per ton of refrigeration is \[\frac{N}{COP,}\] where COP is the coefficient of performance then N is equal to:

    A) 2.75                             

    B) 3.50

    C) 4.75                             

    D) 5.25

    Correct Answer: B

    Solution :

    \[COP\,\,=\,\,\frac{Q}{COP}\,\,=\,\,\frac{1TR}{W}\] \[W\,\,=\,\,\frac{1TR}{W}\frac{N}{COP}\] \[\therefore \,\,N\,\,=\,\,1TR\,\,=\,\,350\]

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