• Card 9 / 35: Find the Carnot coefficient of performance for a refrigeration system operating between 320°K and 285°K.
    A) 6.5
    B) 8.14
    C) 0.12
    D) 0.16
    E) 3.0

    Answer:
    B) 8.14

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Explanation:

The Carnot COP is the inverse of the cycle efficiency. For refrigeration, it is Tcold/(Thot-Tcold) = 285/35 = 8.14.

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Thermal-Fluid Systems ME303

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Attribution:  Dr. Steve Gibbs. Thermal-Fluid Systems. The Saylor Academy 2014, http://www.saylor.org/courses/me303/
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