A centrifugal pump converts mechanical energy from a motor to energy of a moving fluid. A portion of the energy goes into kinetic energy of the flid motion, and some into potential energy, represented by fluid pressure or by lifting the fluid, against gravity, to a high altitude.

The transfer of energy from the mechanical rotation of the impeller to the motion and pressure of the fluid is usually described in terms of centrifugal force, especially in order sources written before the modern concept of centrifugal force as a fictitious force in a rotating reference frame was well articulated. the concept of centrifugal force is not actually required to describr the action of the cenrifugal pump.

In the modern centrifugal pump, most of the energy conversion is duo to the outward force that curved impeller blades impart on the fluid. Invariably, some of the energy also pushes the fluid into a circular motion, and this circular motion can also convey some energy and increase the pressure at the outlet.

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2012-09-04

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