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Question in thermodynamics

  1. May 25, 2013 #1
    Hi

    Can please give me the idea for solving these questions

    617360649.jpg
     
  2. jcsd
  3. May 25, 2013 #2

    SteamKing

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  4. May 25, 2013 #3
    I have efficiency = 1 - Tlow /T high





    so 1 - 200/1200


    efficiency = 5/6

    Carnot efficiency = w/Qh

    20/40 = 0.5

    then what the next ?
     
  5. May 25, 2013 #4

    SteamKing

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    Why is the Carnot efficiency important? Can a given process have a greater efficiency than the Carnot value?
     
  6. May 26, 2013 #5
    hi

    I don't no the important but I can not the efficiency greater than the Carnot value
     
  7. May 26, 2013 #6

    SteamKing

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    So, based on the Carnot efficiency of the process, and the efficiency determined by the heat input and work output, is the process feasible?

    BTW, if you read the wiki article, it tells you why the Carnot efficiency is important.
     
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