Page 330 - Steam Turbines Design, Applications, and Rerating

304 Chapter Fourteen

Figure 14.34 Dimensions and weights of typical single-valve, multistage steam turbines.
(Elliott Company, Jeannette, Pa.)

2
kg/cm ), 750°F (399°C) (261°F) (127°C) superheat; exhaust at 3 in. Hg abs (0.1
atm abs)
1. Theoretical steam rate, Table 14.3 at 600 psig, 750°F, 3 in. Hg abs . . . 7.4
lb/kWh (3.36 kg/kWh)
2. Basic efficiency, Fig. 14.35 at 6,000 hp and 600 psig . . . 0.729
3. Superheat factor, Fig. 14.36 at 261°F superheat . . . 1.03
4. Speed factor, Fig. 14.37 at 7000 r/min and (6000 hp/3 in. Hg abs =
2000) . . . 0.989

TSR
Estimated steam rate =
efficiency