Centrifugal pump pdf

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WITHOUT DIFFUSER

Volute casing is used to convert part of Velocity energy at impeller exit to pressure energy.

• (U^2/2g)

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WITH DIFFUSER

• Diffuser function is to decrease the turbulence losses and unify the direction of the outlet fluid.

Definition:

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• Centrifugal pumps increase momentum and pressure head by means of rotating blades which converts radial velocity into pressure head.

Components

– Inlet duct

– Impeller

– Volute

– Discharge nozzle

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