Pump energy (centrifugal pump)
Description
Centrifugal pumps are a sub-class of dynamic axis-symmetric work-absorbing turbo-machinery.The rotational energy typically comes from an engine or electric motor. The fluid enters the pump impeller along or near to the rotating axis and is accelerated by the impeller, flowing radially outward into a diffuser or volute chamber (casing), from where it exits. The energy usage in a pumping installation is determined by the flow required, the height lifted and the length and friction characteristics of the pipeline.
Related formulasVariables
Pi | Input power (W) |
ρ | Fluid density (kg/m3) |
g | Standard gravity |
H | Energy Head added to the flow (m) |
Q | Volumetric flow rate (m3/s) |
n | Efficiency of the pump plant as a decimal (dimensionless) |