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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 (4.49) is the unsteady flow availability equation that is the availability equivalent of the
unsteady flow energy equation. Many of the processes considered in engineering are steady state ones,
which means that the conditions in the control volume do not change with time. This means that
dA
cv
=dt ¼ 0 and dV=dt ¼ 0; and then Eqn (4.49) can be simplified to
0 ¼
X
j
1
T
0
T
_
Q
_
W þ
X
i
_
m
i
a
f
i
X
e
_
m
e
a
f
e
T
0
_
s
cv
¼
X
j
1
T
0
T
_
Q
_
W þ
X
i
_
m
i
a
f
i
X
e
_
m
e
a
f
e
_
I
cv
(4.50)
Example 4.8.1: steady flow availability
Superheated steam at 30 bar and 250
C flows through a throttle with a downstream pressure of
5 bar. Calculate the change in flow availability across the throttle, ...
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Publisher Resources

ISBN: 9780444633736