To control the power output of an isentropic steam

Chapter 7, Problem 198P

(choose chapter or problem)

To control the power output of an isentropic steam turbine, a throttle valve is placed in the steam line supplying the turbine inlet, as shown in the figure. Steam at \(6 \mathrm{MPa} \text { and } 400^{\circ} \mathrm{C}\) is supplied to the throttle inlet, and the turbine exhaust pressure is set at 70 kPa. Compare the work produced by this steam turbine, in kJ/kg, when the throttle valve is completely open (so that there is no pressure loss) and when it is partially closed so that the pressure at the turbine inlet is 3 MPa.

Equation Transcription:

Text Transcription:

6 MPa and 400°C

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