# 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 500Â°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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Please see the attached file.

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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The expert examines thermodynamics Rankine cycle efficiency problems.

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