?The steam rate to a turbine for variable output is controlled by a throttle valve in
Chapter 7, Problem 7.2(choose chapter or problem)
The steam rate to a turbine for variable output is controlled by a throttle valve in the inlet line. Steam is supplied to the throttle valve at 1700 kPa and 225°C. During a test run, the pressure at the turbine inlet is 1000 kPa, the exhaust steam at 10 kPa has a quality of 0.95, the steam flow rate is \(0.5 kg \cdot s^{−1}\), and the power output of the turbine is 180 kW.
(a) What are the heat losses from the turbine?
(b) What would be the power output if the steam supplied to the throttle valve were expanded isentropically to the final pressure?
Text Transcription:
0.5 kg \cdot s^−1
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