Pump Motor Capcity vs Flow Rate of the Pump

Provide the manufacturer with all relevant details and I'm sure they'll oblige. That way you'll not overload the motor by asking it to do to much. It's the pump that determines the power required.

For any pump the power is proportional to the flow x head x efficiency

However for a given pump increasing the power alone won't increase the flow, for that you need to increase the RPM , impeller diameter , widen the impeller decrease the head ,bigger pump or call in the help of the neighbour.

Small pumps are often sold as units where the motor is selected to provide for all or most possible situations.

Hi

There is not a direct relationship as you ask, however it works like this

A centrifugal pump that has a defined production rate, and an operating range in whcih you MUST keep the pump operting in, each stage requires a certain amount of HP at its defined frequency and voltage. (This will change following the "Laws of Affinity" if you change the frequency.)

There will be a SLIGHT increase in required HP if you exceed the OR per stage, however the subsequent damage to the pump and motor, it's not recommended you operate outside the OR. But you have to remember that as your flow rate increases your RC increase slightly and your lift goes down, so althought you might try to produce more fluid you may not get it to surface as there is not enough lift per stage at the higher flow rate to make it to the surface, and that is a whole different story....

Each stage will LIFT fluid a certain height, therefore for example, if your pump is in a well of 100feet and each stage lifts 10feet, you require 10 stages to lift fluid to surface.

If each stage requires 2HP then the motor you require in this example is 20HP.

A pump is not concerend if you are pumping water, oil (light crude) or waste water or something inbetween. The Running Current (RC) will change depending on the load on the motor from the pump depending on the specific gravity of the fluid you are pumping. The idea is to use a motor that has the HP required for the pump and a bit to spare because of "plugs" of solids or sand or other stuff in the fluid that the pump will move to the surface and that will increase the load somewhat.

Any further questions let me know, only to please to help

Thank you

Hello to everybody out there,

I have pump which pump out Residue oil.The flow at the discharge end very slow.The pump rated :head=21m, rpm=1450, Q=3m cubic m/hr, motor=3hp, impellar size=200mm, discharge pipe dia.=63mm.Tanker that coming to load this particular product have to wait for 13 hrs. to fillup the tank.I'm in dilema,how can i improve this . Please help me.

either increase the frequency or buy a bigger pump.

with a bigger pump you will need to buy a bigger motor too!