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12.16 Water is pumped with a centrifugal pump, and mea- surements made on the pump indicate that for a flowrate of 240 gpm the required input power is 6 hp. For a pump efficiency of 62%, what is the actual head rise of the water being pumped?

12.16 Water is pumped with a centrifugal pump, and mea- surements made on the pump indicate that for a flowrate of 240 gpm the required input power is 6 hp. For a pump efficiency of 62%, what is the actual head rise of the water being pumped?

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12.16 Water is pumped with a centrifugal pump, and mea- surements made on the pump indicate that for a flowrate of 240 gpm the required input power is 6 hp. For a pump efficiency of 62%, what is the actual head rise of the water being pumped?
Transcribed Image Text:12.16 Water is pumped with a centrifugal pump, and mea- surements made on the pump indicate that for a flowrate of 240 gpm the required input power is 6 hp. For a pump efficiency of 62%, what is the actual head rise of the water being pumped?
Expert Solution
Step 1

Given that

Flowrate on the pump,Q=240 gpm=240 gal/min(7.48 gal/ft3)(60 s/min)

Power efficiency,η=62%=0.62

Input power,Pin=6 hp

To find the actual head rise of the water being pumped.

We have

Pump efficiency,η=γQha550Pin---------------(1)

Here γ=62.4 lb/ft3

 

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