A steam power plant operates on the actual regenerative Rankine cycle with a closed feedwater heater as shown in the figure below. Steam turbine inlet at 3500 kPa and 370 °C and condenser at 20|kPa. Steam is extracted at 1000 kPa to serve the closed feedwater heater, which discharges into the condenser after being throttled to condenser pressure and at point 7, steam is saturated liquid. The isentropic efficiencies of the turbine and the pump are 85 percent and 90 percent, respectively. Calculate; Turbine a. turbine work (W7 , k]/kg)

Elements Of Electromagnetics
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ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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Thermal engineering
A steam power plant operates on the actual regenerative Rankine cycle with a closed feedwater
heater as shown in the figure below. Steam turbine inlet at 3500 kPa and 370 °C and condenser at
20|kPa. Steam is extracted at 1000 kPa to serve the closed feedwater heater, which discharges into
the condenser after being throttled to condenser pressure and at point 7, steam is saturated liquid.
The isentropic efficiencies of the turbine and the
pump are 85 percent and 90 percent,
respectively. Calculate;
Turbine
a. turbine work (W-, kJ/kg)
b. pump work (W,, k]/kg)
c. heat supply in the boiler (Qin,kJ/kg)
d. thermal efficiency of the cycle
Boiler
Condenser
Closed
fwh
3
2 (Pump
Transcribed Image Text:A steam power plant operates on the actual regenerative Rankine cycle with a closed feedwater heater as shown in the figure below. Steam turbine inlet at 3500 kPa and 370 °C and condenser at 20|kPa. Steam is extracted at 1000 kPa to serve the closed feedwater heater, which discharges into the condenser after being throttled to condenser pressure and at point 7, steam is saturated liquid. The isentropic efficiencies of the turbine and the pump are 85 percent and 90 percent, respectively. Calculate; Turbine a. turbine work (W-, kJ/kg) b. pump work (W,, k]/kg) c. heat supply in the boiler (Qin,kJ/kg) d. thermal efficiency of the cycle Boiler Condenser Closed fwh 3 2 (Pump
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