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Centrifugal Pumps

Most used pumps in engineering because they support wide range of heights and flow rates. Mixed flow, rotodynamic pump.

Centrifugal pump

There can be a diffuser as well, which is optional.

Volute

Casing of the impeller. A passage with increasing area, to reduce velocity (to reduce losses).

Diffuser

A fixed set of vanes added to the impeller. To direct the flow into the volute, to minimize impact losses.

Operation

  • Volute must be filled with fluid to start pumping
  • Fluid enters through the eye of the impeller
  • and are increased when the fluid flows through the impeller

Performance characteristic

Performance characteristic curve of centrifugal pump