| Component | Formula | Description | | :--- | :--- | :--- | | | Vertical distance between the water source and the highest discharge point | The physical height the water must be lifted. If the pump is below the source, the static lift is negative (a benefit). | | Friction Head (H_friction) | Darcy-Weisbach or Hazen-Williams equation | The energy loss caused by water rubbing against the inside of pipes, fittings, and valves. | | Pressure Head (H_pressure) | ( H_\textpressure = \fracP_\textpressure\rho \cdot g ) | Accounts for any required pressure at the discharge point, such as the minimum pressure needed for a sprinkler head. |
Velocity Head=v22gVelocity Head equals the fraction with numerator v squared and denominator 2 g end-fraction is fluid velocity and booster pump head calculation xls
= Fitting factor (e.g., 90° elbow = 0.9, gate valve fully open = 0.2) 4. Residual Pressure ( Hrcap H sub r | Component | Formula | Description | |
: Utilize Excel’s charting capabilities to visualize how changes in input parameters affect the pump head. | | Pressure Head (H_pressure) | ( H_\textpressure
Calculate these using equivalent lengths ( Lecap L sub e