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Heat engine problem

  1. Dec 2, 2009 #1
    1. The problem statement, all variables and given/known data

    The hot reservoir of a heat engine is steam at 100 while the cold reservoir is ice at 0. In 1.3 of operation, 12 of steam condenses and 59 of ice melts.
    What is the power output of the heat engine?

    2. Relevant equations

    W=Q_h - Q_c
    n=W/Q_h=1 - (T_c/T_h)
    Q=ML

    3. The attempt at a solution

    All I could think to do was solve for the thermal coefficient.
    n=1-(273/373)

    I'm not sure where to go from here.
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
     
  2. jcsd
  3. Dec 2, 2009 #2

    Redbelly98

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    Science Advisor
    Homework Helper

    Please tell us what units go with these numbers!
    Okay, it's fairly obvious the temperatures are in degrees Celsius, but you do need to tell us what units go with the 1.3, 12, and 59.

    Hint: the condensing and melting info is useful for finding Qh and Qc.
     
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