2. Steam enters an adiabatic turbine at 8 MPa and 500 °C with a mass flow rate of 3 kg/s and leaves at 30 kPa. The isentropic efficiency of the turbine is 0.90. Neglecting the kinetic and potential energy change of the steam, determine (a) the temperature at the turbine exit and (b) the power output of the turbine. P. kPa Tat, °C s, kJ/(kg-K) h, kJ/kg he 289.27 2624.6 hg 1317.1 2758.7 St SE 0.9441 7.7675 3.2077 5.7450 s, kJ/(kg-K) 6.7266 30 8000 P. kPa 8000 69.09 295.01 T. °℃ 500 h, kJ/kg 3399.5

2. Steam enters an adiabatic turbine at 8 MPa and 500 °C with a mass flow rate of 3 kg/s and leaves at 30 kPa. The isentropic efficiency of the turbine is 0.90. Neglecting the kinetic and potential energy change of the steam, determine (a) the temperature at the turbine exit and (b) the power output of the turbine. P. kPa Tat, °C s, kJ/(kg-K) h, kJ/kg he 289.27 2624.6 hg 1317.1 2758.7 St SE 0.9441 7.7675 3.2077 5.7450 s, kJ/(kg-K) 6.7266 30 8000 P. kPa 8000 69.09 295.01 T. °℃ 500 h, kJ/kg 3399.5

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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2. Steam enters an adiabatic turbine at 8 MPa and 500 °C with a mass flow rate of 3 kg/s and leaves at 30
kPa. The isentropic efficiency of the turbine is 0.90. Neglecting the kinetic and potential energy change
of the steam, determine (a) the temperature at the turbine exit and (b) the power output of the turbine.
P, kPa Tat, °C
s, kJ/(kg-K)
h, kJ/kg
he
30
8000
P. kPa
8000
69.09
295.01
T.°C
500
hg
289.27 2624.6
1317.1 2758.7
h, kJ/kg
3399.5
St
SE
0.9441 7.7675
3.2077 5.7450
s, kJ/(kg-K)
6.7266

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