EngiRef / Fluids Engineering Formula
Pump Power
Pump Power: Power required by pump. A Pipe Flow formula in fluids engineering. Variables P, ρ, g, Q, H and η, each with SI and imperial units.
Pipe Flow
Specification
- Name
- Pump Power
- Discipline
- fluids
- Category
- Pipe Flow
- LaTeX
- P = \frac{\rho g Q H}{\eta}
- Description
- Power required by pump
- Conditions
- Hydraulic power; efficiency η is a fraction between 0 and 1
- Can solve for
- P, Q, H, η
- Tags
- pump, power, head, flow
Variables
| Symbol | Name | Unit | Si Unit | Imperial Unit |
|---|---|---|---|---|
| P | Power | W | W | hp |
| ρ | Fluid Density | kg/m³ | kg/m³ | - |
| g | Gravity | m/s² | m/s² | - |
| Q | Flow Rate | m³/s | m³/s | gpm |
| H | Head | m | m | ft |
| η | Efficiency | - | - | - |
Common questions
- What is the Pump Power formula?
- Power required by pump. It sits under Pipe Flow, Fluids engineering in the EngiRef reference.
- What do the symbols in the Pump Power formula mean?
- In Pump Power, P is power in W; ρ is fluid density in kg/m³; g is gravity in m/s²; Q is flow rate in m³/s; H is head in m; η is efficiency.
- When does the Pump Power formula apply?
- Pump Power holds under this condition: Hydraulic power; efficiency η is a fraction between 0 and 1.