Awell-insulated turbine operating at steady state develops 28.75 mw of power for a steam flow rate of 50 kg/s. the steam enters at 25 bar with a velocity of 61 m/s and exits as saturated vapor at 0.06 bar with a velocity of 130 m/s. neglecting potential energy effects, determine the inlet temperature, in 8c.

Explanation:

Given

power Developed=28.75 MW

Steam exit as saturated

From saturated steam stable h2=h_g=2567.4 KJ/kg[/tex]

Applying Steady flow Energy equation

Q=0 because of insulation and

using steam tables

acceleration = (change in speed) / (time for the change)

change in speed = (20-120)= -100 m/s.

1.5 min = 90 sec

acceleration = -100/90 = -1.11 m/s^2.

we don't care about the 150kg or the 2,500 meters. they don't make any difference.

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the body's situation won't change the forces are equal opposit and on the same body