Steam Turbine Flashcards
1
Q
ideal work of turbine, Wt
A
ms(h1-h2)
2
Q
ideal turbine work if PE, KE, & Qloss are Given, Wt
A
ms(h1-h2 )+mg∆z+1/2 ms(v1^2-v2^2 )-Q_loss
3
Q
Actual Turbine Work, Wt’
A
ms(h1-h2’)
ms(h1-h2)Ƞst
4
Q
Stage Efficiency, Ƞst
A
(h1-h2’)/(h1-h2)
5
Q
Turbine Power Output, TP
A
ms(h1-h2)Ƞt
where: Ƞt is turbine efficiency
6
Q
Generator Efficiency, Ƞg
A
GP/TP
7
Q
Brake Thermal Efficiency, Ƞtb
A
TP/ms(h1-h2)
8
Q
Combined Thermal Efficiency, Ƞtc
A
GP/ms(h1-h2)
9
Q
Brake Engine Efficiency, Ƞbe
A
BP/ms(h1-h2)
10
Q
Combined Efficiency, Ƞec
A
GP/ms(h1-h2)
11
Q
Cooling water Requirement in Condenser, mw
A
Qr=Qw
ms(h1-h2)=mCp∆T
