Effect Of Delivery Pipe Diameter Of A Centrifugal Pump Delivery Time, Flow, Height Used For Water?

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January 28th, 2010 by admin

We have two series connected 2.2 kw (3HP) centrifugal pumps used for domestic water supply from ground floor to over head tank at 25 m high. Delivery line has 100 mm dia. reduced to 40 mm dia. GI pipe If we change the 40 mm dia. GI pipe to 75 mm dia. GI or PVC pipe, will there be any saving on pumping time?

2 Responses

Rajib D writes:
January 28th, 201010:46 pmat

Any time you increase the diameter of a pipe on the discharge of a centrifugal pump you reduce the amount of friction loss and the total head the pump must pump against. With lower head the pump will then pump at a higher rate.
The degree to which this change will improve the pumping time is dependent on the length of the replaced pipe, the flow rate from the pump and the pump performance curve. If you have this information then you can estimate the improvement in pumping time.
oil field trash writes:
January 28th, 201010:52 pmat

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