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Rankine Cycle

  1. May 20, 2007 #1
    1. The problem statement, all variables and given/known data

    Can any one help with this particular question

    Using a steam power plant that operates on a simple rankine cycle and has a net power output of 45MW. Steam enters the turbine at 70 bar and 500 degrees c and is cooled in the condenser at a pressure of 110kPa by running cooling water, from a lake through tubes to the condenser at a rate of 2000kg/sec. Determine:

    The temperature rise of the cooling water?

    3. The attempt at a solution

    I have calculated the thermal efficiency of the cycle to be at 39% and the mass flow rate of steam to be at 36 kg/sec. Should i be using the equation Q=m.Cp.DT? to calculate the temp rise of the cooling water?...I know all enthalpy figures at each state of the cycle -


    but am still having difficulty knowing what equations to use and what to put in?

  2. jcsd
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