Steam enters a turbine operating at steady state with a mass flow of 10 kg/min, a specific enthalpy of 3100 kJ/kg, and a velocity of 30 m/s. At the exit, the specific enthalpy is 2300 kJ/kg and the velocity is 45 m/s. The elevation of the inlet is 3 m higher than at the exit. Heat transferred away from the turbine is 1.1 kJ/kg of stream flow. Let g = 9.81 m/s^2.
Determine the power developed by the turbine, in kW.

Explanation:

The model for the turbine can be derived by means of the First Law of Thermodynamics:

The work produced by the turbine is:

The mass flow and heat transfer rates are, respectively:

Finally:

answer: 500 wph.

explanation:

answer:

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