A model centrifugal pump with impeller diameter 365 mm is tested at its design operating condition....

A model centrifugal pump with impeller diameter 365 mm is tested at its design operating condition. The test gives the following data when pumping water, speed = 870 rev/min head = 18.9 m capacity = 73.7 L/s efficiency = 89%.

A geometrically similar pump is to be designed to pump a fluid with relative density 0.78 against a head of 85 m with a flow of 450 L/s.

Determine:

A) The impeller size?

B) The speed?

C) The power input at the design point of the prototype pump?

Expert Solution

Amanda K answered 2 years ago

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