Thermodynamics Rankine cycle efficiency problem
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An ideal reheat Rankine cycle operates between the pressure limits of 20 kPa and 8 MPa, with reheat occurring at 3 MPa. The temperature of steam at the inlets of both turbines is 500°C, and the enthalpy of steam is 3104 kJ/kg at the exit of the high-pressure turbine, and 2385 kJ/kg at the exit of the low-pressure turbine. Disregarding the pump work, the cycle efficiency is:
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The expert examines thermodynamics Rankine cycle efficiency problems.
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Thermal efficiency of the reheated Rankine cycle is given by;
(1)
where;
(2)
Enthalpies at the exit of the turbines are given, h4=3104 ...
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