Page 150 - Advanced Gas Turbine Cycles
P. 150
Chapter 7. The combined cycle gas turbine (CCGT) 121
0.51 I
0.5 1 - T3/T1 = 4.0
-- T31Tl = 4.5
- *TWl = 5.0
.
0 10 12 14 16 10 20 22
(a) PRESSURE RATIO
0.53
0.52
0.51
c
* 0.5
0
;
z
0.49
U
U
2 0.40
;
-I
> 0.47
0
0.46
0.45
0.44
0 10 12 14 16 10 20 22
(b) PRESSURE RATIO
Fig. 7.7. (a) Overall efficiency of CCGT plant with feed water heating by bled steam and single pressure steam
raising (after Rufli [9]). (b) Overall efficiency of CCGT plant with feed water heating with bled steam and dual
pressure steam raising (after Rufli A).
