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Homework Help: Carnot engine as a heat pump

  1. Dec 4, 2008 #1
    1. The problem statement, all variables and given/known data
    An ideal (Carnot) engine has an efficiency of 50 %
    If it were possible to run it backward as a heat pump, what would be its coefficient of performance?



    2. Relevant equations
    COP = (TL) / (TH - TL )


    3. The attempt at a solution
    no temperatures are given. I just know that since e = 1 - TL / TH then TL / TH is 0.5 since the efficiency is 50%
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
     
  2. jcsd
  3. Dec 8, 2008 #2

    Redbelly98

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    Staff Emeritus
    Science Advisor
    Homework Helper

    Re: Cop

    Okay, since TL is 0.5 TH what does that give for COP?
     
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