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236 Chapter 5
ISOPSI,3j600RPM
(50PSI.I300RPM
600P$I,3*OOWM
-HALF-LOW STEAM 600PSI, 1.800RPH
- RATE FACTOR GEARED TURBINE
SEAR toss)
(ma.
-ATM. BACK PRESS.
150PSt,3,600RPtl
300PSI.3J600RM
I 150PSI, 1.BOORPIII
300PSI, 1.800RPM
600PSLI.BOOWM
20 30 4050607080100 ZOO 300400500
Brake Horsepower
Figure 5.19 Isentropic efficiencies for single-stage noncondensing tur-
bines - dry saturated steam. From Ref. 31 with permission.
1.0
0.9
0.8
0.7
0.6 II
100 200 300
Initial Superheat, °F
Figure 5.20 Efficiency correction factors for single-stage turbines - su-
perheated steam. From Ref. 31 with permission.
Copyright © 2003 by Taylor & Francis Group LLC
