The relationship between pump flow rate and rotational speed
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What is the relationship between a pump’s flow rate and its rotational speed?
Assuming the pressure difference remains constant: flow rate is proportional to rotational speed
Pumps all have a maximum rotation speed and a maximum flow rate; generally, within the specified range, the higher the rotation speed, the greater the flow rate.
It is proportional to the rotational speed within a certain range; therefore, an inverter can be used to adjust the pump’s rotational speed and flow rate.
With all other parameters remaining constant, the flow rate of the pump is directly proportional to its rotational speed: n2 / n1 = Q2 / Q1. For example, if the rotational speed increases by 10%, the flow rate also increases by approximately 10% (the deviation in this relationship remains small within a range of ±20% change in rotational speed)