Hf = f * (L/D) * (V^2/2g)
Suppose we want to calculate the booster pump head for a water supply system with the following inputs:
The friction head loss is calculated using the Darcy-Weisbach equation: booster pump head calculation xls
| Input | Value | Unit | | --- | --- | --- | | Flow rate (Q) | | m^3/s | | Length of pipe (L) | | m | | Diameter of pipe (D) | | m | | Elevation of suction point (Zs) | | m | | Elevation of discharge point (Zd) | | m | | Friction factor (f) | | - | | Velocity of fluid (V) | | m/s |
Hs = Zs - Zd
The static head is the difference in elevation between the suction and discharge points:
Hm = 10-20% of H
H = Hf + Hs + Hm