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Steam turbines, maximum amount of work done?

  1. Apr 10, 2008 #1
    Steam turbines, maximum amount of work done???

    Hi, having a little trouble with this problem, not entierly sure what formula to use, or what value to use for Q.

    A steam turbine is operated ith an input temp of 800C and exhaust temp of 150C. What is the maximum amount of work the turbine can do for a given heat input Q? Under what conditions is the maximum achieved?

    Thanks in advance
     
  2. jcsd
  3. Apr 10, 2008 #2
    have you tried thinking of the thing as a carnot engine?
     
  4. Apr 10, 2008 #3
    yeh i have but that would just give me an answer with two undefined variables.

    0.6Q=W

    in the question it says 'for a given heat input Q' what does that mean exactly, could it mean pick a random value.

    Thanks for your reply
     
  5. Apr 10, 2008 #4
    it means just leave Q in your answer. you've already got it
     
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