The head of the pump
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The head produced by a pump depends on its structure, such as the diameter of the impeller and the degree of curvature of its blades, as well as its rotational speed. A larger impeller diameter results in a higher head; the faster the rotation speed, the greater the head. The greater the curvature of the blades, the higher the head too. I’m not very clear on this – please advise, thank you
This issue can be understood as follows: the larger the impeller diameter, the higher the rotational speed; consequently, the greater the centrifugal force acting on the particles of the working fluid, and the more energy they possess. The blade curvature is related to the angle at which the blade outlet is positioned; when this angle is greater than 90 degrees, the head increases as the flow rate rises ； When the angle is 90, the head does not change with flow rate ； Angle