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Heat engine

  1. May 12, 2014 #1
    Reverse of a great engine is refrigerator or heat pump?
  2. jcsd
  3. May 12, 2014 #2


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    Staff: Mentor

    Both, I suppose. A refrigerator and a heat pump are the same thing. It's just that (in common usage anyway), with a heat pump you can change which side is hot and which side is cold.
    Last edited: May 12, 2014
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