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darkmagic
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Homework Statement
Given:
A reheat Rankine cycle
- Steams enter the high-pressure turbine at 12.5 MPa and 550C
- It leaves at 2 MPa
- Steam is reheated at constant pressure to 450C before it expands in the low pressure turbine
- Isentropic efficiency of turbine = 85%
- Isentropic efficiency of pump = 90%
- Steam leaves the condenser as saturated liquid
- moisture content of the steam at the exit of the turbine is not to exceed 5%
- mass flow rate is 7.7 kg/s
Find the condenser pressure
Net power output
Thermal efficiency
Homework Equations
The Attempt at a Solution
I already got the enthalpy of the inlet of high pressure turbine, at reheat, and at the inlet of the low pressure turbine. After that, I'm stock I do not know what should I do next. I do everything I know.
The answers are 9.73 kPa, 10.2 MW, and 36.9%