Hydraulic power
Power transferred to the fluid.
Fluid mechanics · Hydraulics
Hydraulic power from pressure and flow rate
Power transferred to the fluid is Ph = Δp·Q.
Created v1.0
By Thibaut Grzelak, Mechanical Analysis Engineer
02
Results
Required input power
Power before losses.
Estimated losses
Input minus hydraulic power.
Relation and numerical substitution
Ph = Δp · Q ; Pentrée = Ph / η—
Steady operation. Incompressible fluid. Simplified overall efficiency.
01Formulas and symbols
Formulas used
Ph
Δp·QHydraulic powerPentrée
Ph/ηRequired powerPpertes
Pentrée−PhLosses02Assumptions and limits
Scope of validity
- Steady operation.
- Incompressible fluid.
- Simplified overall efficiency.
03Validation example
Reference numerical case
- 100 bar, 20 L/min, η = 90%.
- Ph = 3.333 kW; Pinput = 3.704 kW.
04References
Technical references
- Incompressible-flow relation P = Δp·Q.
- BIPM, SI units.