Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

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

    User Avatar
    Science Advisor
    Homework Helper

    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?

Share this great discussion with others via Reddit, Google+, Twitter, or Facebook