3
Question
Steam enters in adiabatic turbine with enthalpy 3000 kJ/kg at a steady flow rate of 8 kg/s. At a point where enthalpy is 2820 kJ/kg, 3 kg/s is extracted. The remaining mass further expands till enthalpy becomes 2200 kJ/kg. The power developed by the turbine is
Steam enters in adiabatic turbine with enthalpy 3000 kJ/kg at a steady flow rate of 8 kg/s. At a point where enthalpy is 2820 kJ/kg, 3 kg/s is extracted. The remaining mass further expands till enthalpy becomes 2200 kJ/kg. The power developed by the turbine is
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Solution
The correct option is C 4.5 MW
WT=8(h1−h2)+(8−3)(h2−h3)
=8(3000−2820)+5(2820−2200)
=4540 kW=4.54≃4.5 kW
WT=8(h1−h2)+(8−3)(h2−h3)
=8(3000−2820)+5(2820−2200)
=4540 kW=4.54≃4.5 kW
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