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Engineering and Tech / Fundamentals of Engineering Thermodynamics 8 / Chapter 6 / Problem 6.143

Fundamentals of Engineering Thermodynamics | 8th Edition | ISBN: 9781118412930 | Authors: Michael J. Moran

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Water vapor at 6 MPa, 6008C enters a turbine operating at

Chapter 6, Problem 6.143

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QUESTION:

Water vapor at 6 MPa, 600\(^{\circ}\)C enters a turbine operating at steady state and expands to 10 kPa. The mass flow rate is 2 kg/s, and the power developed is 2626 kW. Stray heat transfer and kinetic and potential energy effects are negligible. Determine (a) the isentropic turbine efficiency and (b) the rate of entropy production within the turbine, in kW/K.

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QUESTION:

Water vapor at 6 MPa, 600\(^{\circ}\)C enters a turbine operating at steady state and expands to 10 kPa. The mass flow rate is 2 kg/s, and the power developed is 2626 kW. Stray heat transfer and kinetic and potential energy effects are negligible. Determine (a) the isentropic turbine efficiency and (b) the rate of entropy production within the turbine, in kW/K.

ANSWER:

Step 1 of 7

The turbine can be shown as,

The T-s diagram can be shown as,

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