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Advanced Thermodynamics for Engineers, 2nd Edition
book

Advanced Thermodynamics for Engineers, 2nd Edition

by Ali Turan, D. Winterbone
February 2015
Intermediate to advanced content levelIntermediate to advanced
578 pages
19h 27m
English
Butterworth-Heinemann
Content preview from Advanced Thermodynamics for Engineers, 2nd Edition
Equation (5.21) shows that the irreversibility of the expansion process reduces the net work
significantly by (1) increasing the amount of exergy rejected and (2) increasing the irreversibility of the
cycle. The rational efficiency of this cycle is
h
R
¼ 1
ðb
3
b
4
ÞT
0
ðs
3
s
3s
Þ
b
2
b
3
(5.22)
The irreversible cycle can be seen to be less efficient than the reversible one by comparing Eqns
(5.20) and (5.22). In the case shown b
2
b
1
is the same for both cycles, but b
3
b
4
> b
3s
b
4
, and in
addition the irreversibility T
0
(s
3
s
3s
) has been introduced.
5.3 RANKINE CYCLE
It was stated above that the efficiency of a cycle is often evaluated neglecting the irreversibility ...
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Publisher Resources

ISBN: 9780444633736