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posted by  HippieEngineer on 7/20/2008 9:14:31 AM  |  status: Live  

Rankine Cycle

Course Textbook Chapter Problem
Thermodynamics Thermodynamics: An engineering Approach 10 22
Question Details:
A steam Rankine Cycle operates between 1psia and 2500 psia in the boiler and condenser, respectively.  The turbine inlet temperature is 800 R and the turbine efficiency is 90%.  The cycle is sized to produce 1000 kW of power.  Calculate the mass flow through the boiler, the power produced by the turbine, the rate of heat supply in the boiler, the thermal efficiency, and the percent error in the thermal efficiency if the power required by the pump is not accounted for.

I've done the problem a million times, and I cant get the percent error in thermal efficiency.  Could any one help?
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