What is the effective power (Pu) for a pump?
It is the mechanical energy transferred by the pump’s impeller to the moved fluid as kinetic and potential energy. It is measured in kW and it depends from 3 characteristics: • Capacity (Q); • Total head (H); • Volumic mass of fluid. It is calculated by the following formula: Pu = (Q*H*g)/(h*K) where: Q is the capacity in m³/h; H is total head in m; g is specific mass of fluid in kg/m³; h is hydraulic efficiency (for the pump only); K is equal to 367 for Pu in kW.
