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## Homework Statement

## Homework Equations

Heat added, Qa (This I'm not sure how since the steam passed through a reheater before it enters the HPT. That is what I understand based on the problem above)

Work Net, Wnet

Efficiency, Wnet/Qa

Heat Rate, WP/EP (Not sure if that is the correct formula)

## The Attempt at a Solution

First I made a T-S Diagram

Based on the diagram above, I got all these enthalpy values.

h1 = h @ 3 MPa & 370C

h2 = h @ 0.7 MPa & s1

h3 = h @ 0.7 MPa & 500C

h4 = hf4 +x hfg4 (All values, 0.007 MPa)

where x = (s4 - sf4)/sfg4

h5 = hf @ 0.007 MPa

h6 = vf5 (P6-P5)

WP1 = h6-h5

ha = h @ 3 MPa and 500C

The WNet that I got is, 1485.491

For the Qa = (ha-h6) + (h3-h2) = 3959.022

Eff = .3752

Was not able to solve Heat Rate.

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I can't seem to understand how the answers shown in the problem was got. Please enlighten me. Thanks in advance!