How to calculate the efficiency of the pump?

The effective power of the pump can be calculated by the density of the medium through the flow and lift, and the efficiency of the shaft power should be calculated. How can the pump efficiency be calculated?

What is the efficiency of the pump? What is the formula for calculating the efficiency of the pump?

The efficiency of the pump refers to the ratio of the effective power of the pump to the shaft power. ETA =pe/p

The power of the pump usually refers to the input power, that is, the power transmitted to the pump shaft by the original motive, so it is also called the axis power, which is expressed in P.

The effective power is the product of the pump's head and the mass flow and the gravity acceleration.

Pe= p g QH (W) or pe= qh/1000 (kw) gamma Rho: Pump density liquid (kg/m3)

Gamma: pump liquid severe gamma = P G (n/ m3) g (m/s): acceleration of gravity

The mass flow rate of qm= p q (t/h or kg/s)

Because the pump power of N (KW) = (m) * head flow (m3/s) * 1000 (severe water / 102 (Kg/m3) power conversion coefficient (ETA), the efficiency of the pump, the pump efficiency) can be obtained. If we can measure the current and voltage (the power of the pump can be calculated), we can get the formula of the pump efficiency by measuring the flow rate, the lift and the efficiency of the pump.

Performance curve of water pump