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Steam enters a turbine operating at steady state at 2 MPa, 360 °C with a velocity...

Steam enters a turbine operating at steady state at 2 MPa, 360 °C with a velocity of 52 m/s. Saturated vapor exits at 0.1 MPa and a velocity of 35 m/s. The elevation of the inlet is 1 m higher than at the exit. The mass flow rate of the steam is 21 kg/s, and the power developed is 5 MW. Let g = 9.81 m/s2. Determine the area at the inlet, in m2.

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Answer #1

Using Table A-4 (Superheated water);

  • at P1 = 2 MPa and T1 = 360oC

V1 = 0.1411 m/kg

Mass flow rate is given as;

ALVI m = 11

= 21-4(52) 0.1411

+ A1 = 0.05698 m

...(Answer)

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