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Homework Help: Minimum power that must be provided to the air-conditioner

  1. Nov 8, 2005 #1
    On a hot day, a Florida home is kept cool by an air conditioner. The outside temperature is 42.8C and the interior of the home is 21C.

    If 25 kJ/h of heat is removed from the house , what is the minimum power that must be provided to the air-conditioner? Answer in units of kJ/h.


    I'm preety stumped would the answer just be 25 kJ/h to compensate for the heat removed ?

    Please help.
    Thank you
     
  2. jcsd
  3. Nov 8, 2005 #2

    Andrew Mason

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    You need to find the COP = Q_c/W to find W. The minimum power would be with the most efficient air conditioner. What is the COP of such a cycle?

    AM
     
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