A pump is to be selected for a waterfall in a garden. The water collects in a pond at the bottom,...

Question

A pump is to be selected for a waterfall in a garden. The water collects in a pond at the bottom, and the elevation difference between the free surface of the pond and the location where the water is discharged is 3 m. The flow rate of water is to be at least 8 L/s.

(i) Select an appropriate motor-pump unit for this job and

(ii) Identify three manufacturers with product model numbers and prices.

(iii) Make a selection and explain why you selected that particular product.

005_dief95k-n0l121bw.docx

Robert · Accepted Answer

Solution: 
i)First we calculate the Power of the pump: 
Here specific weight of water w=9810 N/m3 
Discharge Q= 8 L/s=8 x10-3m3/s= 
Head H = 3 m 
Power = w Q H =9810 x 8 x 10-3x3= 235.44 W=0.315 HP 
So we can select a 0.5 HP motor pump unit.
II) 
1) Model : WPG-28000G-     Head :

A pump is to be selected for a waterfall in a garden. The water collects in a pond at the bottom, and the elevation difference between the free surface of the pond and the location where the water is...

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