
477Solar Process Heat and Thermal Power
© 2008 Taylor & Francis Group, LLC
Since s
4
is less than s
4g
, 4 is a wet state
t4
fg
g
where X is the vapor quality and M is the moisture.
M
ss
s
hhMh
4
4
4
8 152 6 9193
7 5009
0 1641=
=
−
=
=− =
g
fg
gfg
..
.
. or 16.41%
22584 701641 2392 8 2192..(.)
kJ/kg
Therefore,
′
−−=
43 34
085 3507 2192 2389
turbine
.( ) = 3507 kJ/kgg
Actual moisture at the turbine exhaust is
hhMh
M
hh
h
′
′
′
=
−
=
−
=
4
4
4
2584 7 2389
2391
gfg
g
fg
.
′
34 21
η=
−
=
−
=
′
Net work
or
1109
0 3354 33 54
%
η
Carnot
=
=
813
0 615 61 5
K
or
%
Several improvements can be made to the basic Ra ...