Oct 20- The ‘Affinity Law’ associated with centrifugal pumps describe the impact of changes in speed or impeller diameter on a pump flow, head and . May 20- The Affinity Laws govern the performance of your pumps. The laws will help you extrapolate and predict pump performance at different .
The affinity laws lay down the dependency of hydraulic characteristic data of centrifugal pumps on the pumps rotational speed. The affinity laws of centrifugal pump performance express the effect on pump performance due to changes in certain application variables. The affinity laws are a set of forumlas that predict the impact of a change in rotational speed or impeller diameter on the head and flow produced by a pump and . Using affinity laws, or affinity equations, to predict a new pump performance curve (including capacity, hea and brake horsepower) when a change is made to .
H= Total Head in Feet, for a desired condition or scenario (estimated performance) N= Pump Speed in RPM, for a known condition or scenario. Part of a part tutorial on the basics of pumps and pump curves, introduced by Geoff Brown, Applications Consultant for ABB’s drives and motors business.
Oct 20- Remember, the Affinity Laws say that for every amount of change in pressure, there is a corresponding squared change in flow. Jul 20- The pump affinity laws allow the prediction of centrifugal pump performance given changes to the speed of the pump or the diameter of impeller . The pump affinity laws allow the prediction of centrifugal pump performance given changes to the speed of the pump or the diameter of impeller. Affinity Laws The affinity laws express the mathematical relationship between the several variables involved in pump performance.
Aug 20- A couple of recent incidents made me realize how easy it is to misinterpret the affinity laws for variable speed pumps. Dec 20- This curve can then be used to predict pump head curve at different impeller diameter and pump speed based on Affinity Laws.
