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categoryهندسة ميكانيكية
schoolبكالوريوس
event_available2026-07-13
السؤال
Transcribed Image Text:
6.165 Figure P6.165 shows a simple vapor power plant
operating at steady state with water as the working fluid.
Data at key locations are given on the figure. The mass flow
rate of the water circulating through the components is 109
kg/s. Stray heat transfer and kinetic and potential energy
effects can be ignored. Determine
(a) the net power developed, in MW.
(b) the thermal efficiency.
(c) the isentropic turbine efficiency.
(d) the isentropic pump efficiency.
(e) the mass flow rate of the cooling water, in kg/s.
(f) the rates of entropy production, each in kW/K, for the
turbine, condenser, and pump.
P₁ = 100 bar
T₁ =520°C
Turbine
Power out
Steam
generator
P₂ = 0.08 bar
2-90%
Condenser
4-
P4-100 bar
T₁=43°C
Pump
3 P3=0.08 bar
Power
Saturated liquid
in
Fig. P6.165
Cooling
water in at 20°C
Cooling
water out at 35°C
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