Gas Turbine Power Plant Flashcards
1
Q
Brayton cycle compressor work, Wc
A
mCp(T2-T1)
- Cp = 1.0 kJ/kg-K
2
Q
Brayton cycle pressure ratio, rp
A
rp = P3/P4 = P2/P1
3
Q
Bratton cycle heat added in combustor, Qa
A
mCp(T3-T2)
4
Q
Brayton cycle turbine work, Wt
A
mCp(T3-T4)
5
Q
Brayton cycle net turbine work, Wn
A
Wn = Wt - Wc
6
Q
Brayton cycle cycle efficiency
A
Wn/Qa = (Wt-Wc) / Qa = 1 - ( 1 / (rp * k-1/k) )
7
Q
Brayton cycle back work ratio
A
- Compressor work / Turbine work
- T2-T1 / T3-T4