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For a centrifugal pump if the pump is running and we close
the discharge valve what is the effect
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Answer Posted / sankar
Running of the impeller will do work on the fluid...so the
temperature of the fluid increases according to first law
of thermodyanamics....as the process goes on the pressure
builds up in the impeller region,so the negative pressure
drop develops...so the energy given by the pump may not be
sufficient to keep the fluid in the impeller region....so
the fluid may flow in the negative
direction.....erosion,fouling depends on the properties of
the fluid and material of the pump
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