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6.111 Steam enters a two-stage turbine with reheat operating at steady state as shown in Fig. P6.111. The steam enters turbine 1 with a mass flow rate of 120,000 lb/h at 1000 lbf/in.², 800°F and expands to a pressure of 60 lbf/in.³ From there, the steam enters the reheater where it is heated at constant pressure to 350°C before entering tur- bine 2 and expanding to a final pressure of 1 lbf/in.² The turbines operate adiabatically with isentropic efficiencies of 88% and 85%, respectively. Kinetic and potential energy effects can be neglected. Determine the net power developed by the two turbines and the rate of heat transfer in the reheater, each in Btu/h. P3 = 60 lbf/in.? T; = 350°C P2 = 60 lbfſin.? Reheater W. net Turbine 1 Turbine 2 D Nu = 88% %3D n2 = 85% P1 = 1000 lbf/in.? T = 800°F m = 120,000 lb/h P4 = 1 lbf/in.² %3D

6.111 Steam enters a two-stage turbine with reheat operating at steady state as shown in Fig. P6.111. The steam enters turbine 1 with a mass flow rate of 120,000 lb/h at 1000 lbf/in.², 800°F and expands to a pressure of 60 lbf/in.³ From there, the steam enters the reheater where it is heated at constant pressure to 350°C before entering tur- bine 2 and expanding to a final pressure of 1 lbf/in.² The turbines operate adiabatically with isentropic efficiencies of 88% and 85%, respectively. Kinetic and potential energy effects can be neglected. Determine the net power developed by the two turbines and the rate of heat transfer in the reheater, each in Btu/h. P3 = 60 lbf/in.? T; = 350°C P2 = 60 lbfſin.? Reheater W. net Turbine 1 Turbine 2 D Nu = 88% %3D n2 = 85% P1 = 1000 lbf/in.? T = 800°F m = 120,000 lb/h P4 = 1 lbf/in.² %3D

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
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6.111 Steam enters a two-stage turbine with reheat operating at steady state as shown in Fig. P6.111. The steam enters turbine 1 with a mass flow rate of 120,000 lb/h at 1000 lbf/in.², 800°F and expands to a pressure of 60 lbf/in. From there, the steam enters the reheater where it is heated at constant pressure to 350°C before entering tur- bine 2 and expanding to a final pressure of 1 lbf/in.? The turbines operate adiabatically with isentropic efficiencies of 88% and 85%, respectively. Kinetic and potential energy effects can be neglected. Determine the net power developed by the two turbines and the rate of heat transfer in the reheater, each in Btu/h. Qin P3 = 60 lbf/in.2 T = 350°C P2 = 60 lbf/in.2 Reheater W net Turbine 1 Turbine 2 Nu = 88% Ni2 = 85% P4 =1 lbf/in.2 P1 = 1000 Ibf/in.2 T = 800°F m = 120,000 lb/h FIGURE P6.111
Transcribed Image Text:6.111 Steam enters a two-stage turbine with reheat operating at steady state as shown in Fig. P6.111. The steam enters turbine 1 with a mass flow rate of 120,000 lb/h at 1000 lbf/in.², 800°F and expands to a pressure of 60 lbf/in. From there, the steam enters the reheater where it is heated at constant pressure to 350°C before entering tur- bine 2 and expanding to a final pressure of 1 lbf/in.? The turbines operate adiabatically with isentropic efficiencies of 88% and 85%, respectively. Kinetic and potential energy effects can be neglected. Determine the net power developed by the two turbines and the rate of heat transfer in the reheater, each in Btu/h. Qin P3 = 60 lbf/in.2 T = 350°C P2 = 60 lbf/in.2 Reheater W net Turbine 1 Turbine 2 Nu = 88% Ni2 = 85% P4 =1 lbf/in.2 P1 = 1000 Ibf/in.2 T = 800°F m = 120,000 lb/h FIGURE P6.111
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