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Heat Engine problem 2

  1. Jan 29, 2012 #1
    1. The problem statement, all variables and given/known data
    Modern nuclear power plants have an overall efficiency of about 30%. Fossil fuel plants achieve overall efficiencies of 40%. Compare the rate of heat emission from a nuclear plant with that from a fossil fuel plant each of which produces an output power of 1000 MW


    2. Relevant equations

    e=W/Qh

    3. The attempt at a solution
    I don't know where to start because we're only given the efficency and the power but that's not enough information i think
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
     
  2. jcsd
  3. Jan 29, 2012 #2

    Delphi51

    User Avatar
    Homework Helper

    I don't think your formula is useful in this case. It is a more basic efficiency question.

    It's kind of like this. Say you are picking berries and you eat 70% of what you pick. After a long hot day, you have 5 pounds of berries in your pail. Can you figure out what you picked and what you ate? If you have trouble with that, try a 50% eating rate first.
     
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