centrifugal pumps u know?

Question

i would like to know in the industry what is the operating point of the centrifugal pumps against the capacity(flow rate)

i would like to know for a typical industrial centrifuga pumps what is the head it can developed against capacity(flow rate)

Answer 1

The output of a pump can be measured and recorded, for each flow rate from zero to some maximum flow rate. As the flow rate goes up, the pressure at which the liquid is delivered goes down.

Each pump has a point at which it is most efficient. Where a pump will get a lot of use, it is best to find one that satisfies the need when at or near its efficiency point.

Fire pumps generally get little use. Efficiency is not nearly as critical. They can perform satisfactorily at any point on the discharge. curve.

Interesting point. A prime consideration for a fire pump is that it be able to start and run reliably. Some of the pump features sacrifice long running life in order to accomplish this.

Answer 2

You have to plot the efficiency versus flow rate; At the maximum efficiency you ought to operate the pump. At that point you read the flow rate for any any pump you use!