Applying the Entropy Balance: Control VolumesWater at 20

Chapter 6, Problem 83P

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QUESTION:

Water at 20 bar, \(400^{\circ} \mathrm{C}\) enters a turbine operating at steady state and exits at 1.5 bar. Stray heat transfer and kinetic and potential energy effects are negligible. A hard to-read data sheet indicates that the quality at the turbine exit is 98%. Can this quality value be correct? If no, explain. If yes, determine the power developed by the turbine, in kJ per kg of water flowing.

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QUESTION:

Water at 20 bar, \(400^{\circ} \mathrm{C}\) enters a turbine operating at steady state and exits at 1.5 bar. Stray heat transfer and kinetic and potential energy effects are negligible. A hard to-read data sheet indicates that the quality at the turbine exit is 98%. Can this quality value be correct? If no, explain. If yes, determine the power developed by the turbine, in kJ per kg of water flowing.

ANSWER:

Step 1 of 5

We have to identify whether the quality value will be correct or not .

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