Q8: A form stage centrifugal pump running at 600 rpm is to deliver 1 m'/s of water against a manometric head of 80 m. The vanes are curved back at 40° to the tangent at outer periphery. The velocity of flow is 25% of the peripheral velocity at outlet. The hydraulic losses are 30% of the velocity head at the outlet of the impeller. Determine the diameter of the impeller and the manometric efficiency. Ans.: D2 = 0.57 and 7m = 87.12%.

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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Q8: A form stage centrifugal pump running at 600 rpm is to deliver 1 m'/s of water against a manometric
head of 80 m. The vanes are curved back at 40° to the tangent at outer periphery. The velocity of
flow is 25% of the peripheral velocity at outlet. The hydraulic losses are 30% of the velocity head at
the outlet of the impeller. Determine the diameter of the impeller and the manometric efficiency.
Ans.: D2 = 0.57 and nm = 87.12%.
%3D
Transcribed Image Text:Q8: A form stage centrifugal pump running at 600 rpm is to deliver 1 m'/s of water against a manometric head of 80 m. The vanes are curved back at 40° to the tangent at outer periphery. The velocity of flow is 25% of the peripheral velocity at outlet. The hydraulic losses are 30% of the velocity head at the outlet of the impeller. Determine the diameter of the impeller and the manometric efficiency. Ans.: D2 = 0.57 and nm = 87.12%. %3D
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