Explore BrainMass
Share

Thermodynamics Rankine cycle efficiency problem

This content was STOLEN from BrainMass.com - View the original, and get the already-completed solution here!

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:

© BrainMass Inc. brainmass.com December 19, 2018, 8:28 pm ad1c9bdddf
https://brainmass.com/physics/heat-thermodynamics/thermodynamics-rankine-cycle-efficiency-problem-34718

Solution Preview

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 ...

Solution Summary

The expert examines thermodynamics Rankine cycle efficiency problems.

$2.19