Reference:  Hydraulics of Pipeline Systems, 2000, CRC Press LLC, Bruce E. Larock, Rowland W. Jeppson, Gary Z. Watters, Page 24, Example problem 2.5


Pipe Flow Expert File: Case_03_Water_Pumping_With_Two_Pumps_in_Parallel.pfe


Problem Description: 

Water is transferred from a reservoir at 1350 ft elevation to a reservoir at 1425 ft elevation. 

The pipeline is 6000 ft long is 18 inch diameter and has equivalent sand grain roughness e = 0.015 inch. 

Two three stage Ingersoll-Dresser 15H277 pumps are used in parallel to pump the fluid.


Calculate the flow rate and pump head required.


A screen shot of a computer??Description automatically generated


Fluid Data: Water at 59° F (assumed).


Result Comparison: 


Data Item

Published data

Pipe Flow Expert

Flow rate gpm (US)

6680

6686.91

Pump Head Required (ft)

159.4

159.467

Friction factor

0.01917

0.01912


Commentary: 

The published data and the calculated results compare well.