Question: Problem 4 ( 7 . 2 4 ) A boiler section boils 3 k g s saturated liquid water at 2 0 0 0 kPa

Problem

4 (7.24)

A boiler section boils

3 k \frac{g}{s}

saturated liquid water at

2000

kPa to saturated vapor in a reversible constant pressure process. Assume you do not know that there is no work. Prove that there is no shaftwork using the first and second laws of thermodynamics.

Answer:

q = 1890.6 k \frac{J}{k} g, w = - 0.1 k \frac{J}{k} g

Problem 4 ( 7 . 2 4 ) A boiler section boils 3 k

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