Turbines and Compressors Flashcards
1
Q
What is the formula for turbine work output in terms of specific enthalpies?
A
W = m. (h_1 - h_2)
Where
h_1 : Inlet enthalpy
h_2 : Outlet enthalpy
2
Q
How do you calculate isentropic turbine efficiency?
A
η = Actual Work Output /
Ideal Work Output
= (h_3 - h_4) / (h_3 - h_4s)
Where
h_4s : Enthalpy at the isentropic outlet state
3
Q
What is the formula for compressor work input?
A
W = m. (h_2 - h_1)
Where
h_1 : Inlet enthalpy
h_2 : Outlet enthalpy
4
Q
How is isentropic compressor efficiency calculated?
A
η = Ideal Work Output /
Actual Work Output
= (h_2s - h_1) / (h_2 - h_1)
Where
h_2s : Enthalpy at the isentropic outlet state
