Using Isentropic Processes/EfficienciesWater vapor at 6

Chapter 6, Problem 145P

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QUESTION:

Water vapor at 6 MPa, \(600^{\circ} \mathrm{C}\) 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, \(600^{\circ} \mathrm{C}\) 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:

Solution 145P

Step 1 of 5

The turbine operating at steady state for the water vapour, we need to find (a) the isentropic turbine efficiency, (b) the rate of entropy production within the turbine.

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