5-48 Steam flows steadily through an adiabatic turbine. The inlet conditions of the steam are 4 MPa, 500°C, and 80 m/s, and the exit conditions are 30 kPa, 92 percent quality, and 50 m/s. The mass flow rate of the steam is 12 kg/s. Determine (a) the change in kinetic energy, (b) the power output, and (c) the turbine inlet area. Answers: (a)-1.95 kJ/kg, (b) 12.1 MW, (c) 0.0130 m² P₁ = 4 MPa T₁ = 500°C V₁ = 80 m/s

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Thermodynamics
5-48 Steam flows steadily through an adiabatic turbine. The inlet conditions of the steam are 4 MPa, 500°C, and 80 m/s, and the
exit conditions are 30 kPa, 92 percent quality, and 50 m/s. The mass flow rate of the steam is 12 kg/s. Determine (a) the change in
kinetic energy, (b) the power output, and (c) the turbine inlet area. Answers: (a) -1.95 kJ/kg, (b) 12.1 MW, (c) 0.0130 m²
P₁ = 4 MPa
T₁ = 500°C
V₁ = 80 m/s
FIGURE P5-48
Steam
m = 12 kg/s
P₂ = 30 kPa
x₂ = 0.92
V₂ = 50 m/s
Wout
Transcribed Image Text:5-48 Steam flows steadily through an adiabatic turbine. The inlet conditions of the steam are 4 MPa, 500°C, and 80 m/s, and the exit conditions are 30 kPa, 92 percent quality, and 50 m/s. The mass flow rate of the steam is 12 kg/s. Determine (a) the change in kinetic energy, (b) the power output, and (c) the turbine inlet area. Answers: (a) -1.95 kJ/kg, (b) 12.1 MW, (c) 0.0130 m² P₁ = 4 MPa T₁ = 500°C V₁ = 80 m/s FIGURE P5-48 Steam m = 12 kg/s P₂ = 30 kPa x₂ = 0.92 V₂ = 50 m/s Wout
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