1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: 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
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Can you offer guidance or do you also need help?
Draft saved Draft deleted