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Engineering and Tech / Thermodynamics: An Engineering Approach 8 / Chapter 5 / Problem 546

Thermodynamics: An Engineering Approach | 8th Edition | ISBN: 9780073398174 | Authors: Yunus A. Cengel

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Solved: Steam flows steadily through an adiabatic turbine.

Chapter 5, Problem 546

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QUESTION:

Steam flows steadily through an adiabatic turbine. The inlet conditions of the steam are 4 MPa, 5008C, and 80 m/s, and the exit conditions are 30 kPa, 92 percent quality, and 50 m/s. The mass flow rate of the steam is 12 kg/s. Determine (a) the change in kinetic energy, (b) the power output, and (c) the turbine inlet area.

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QUESTION:

Steam flows steadily through an adiabatic turbine. The inlet conditions of the steam are 4 MPa, 5008C, and 80 m/s, and the exit conditions are 30 kPa, 92 percent quality, and 50 m/s. The mass flow rate of the steam is 12 kg/s. Determine (a) the change in kinetic energy, (b) the power output, and (c) the turbine inlet area.

ANSWER:

Step 1 of 6

Steam expands in a turbine. The change in kinetic energy, the power output, and the turbine inlet area are to be determined.

Assumptions are

1. This is a steady-flow process since there is no change with time.

2. Potential energy changes are negligible.

3. The device is adiabatic and thus heat transfer is negligible.

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