S.No Performance Parameters UOM Symbol
9 Pressure of air at fan outlet
mm Pfo
10 Pressure drop across the fans
mm oPfan = Pfo - Pfi (2)
11 Fan speed - RPM Nrpm
12 Condenser duty
Kcal/hr Q
Wcond*(Hvap - Hliq)
13 Ambient air temperature
Tamb
14 Effective modified heat transfer
coefficient
Umod
14 Log Mean temperature difference
oC LMTD
(T
ao
– T
ai
) /
logn((T
s
- T
ai
) /
(T
s
– T
ao
))
Advantages Of Air-Cooled Steam Condenser
- Elimination of additional water usage from the condensing power cycle
- Flexibility in power plant site selection
- Decreased time required for plant permitting
Why ‘A’ Frame Condenser
Apex angle approximately 60o
- Higher heat transfer coefficient
- Integral condensation more likely
- Cross-flow design
- Less floor area
- Less distribution duct length
- Easy Drainage of condensate
Why Partition Wall Between Two Modules
To avoid evacuating air when a fan is “off”
Doors are provided in the partition wall to allow free access into air plenum even while
fans are in operation