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Question:

How do I calculate the power of the pump?

It is known that it takes an hour to pump water, and also to know the head. How does the pump power need to be calculated? What's the formula?

Answer:

A 15kw pump, know how to calculate the head pumping water for an hour (if the head is 10 meters)Lift: MFlow rate: kg / sec (general water pump is cubic / hour, if 10 cubic hour / hour: 2.7 kg / sec)Efficiency: average 60%15000/102*0.6=88 kilograms per second88/10=8.8 kg / sec8.8*3600=31680 kg / h=31.6 cubic / hour
Power P (kw) =9.81*Q (second cubic meter) *H (head, unit m) / efficiency;The efficiency can be found on the pump nameplate or sample.This is the rated power, if the head down, the flow increases, the power will increase, so the actual motor power is often much larger than this calculation.Generally buy pumps are equipped with motors, manufacturers can refer to the same model or similar models of motor power.
Motor Power (kw) =0.163*Q*H*K/60/EOf which: Q is the flow, unit m^3/hH is the lift, unit ME is the efficiency value of the pumpK is the safety factor, generally 1.1.

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