Problem 2The 32-in diameter pump has a performance curve as below. The pump is used at 1170 rpm in a systemwhose head curve is hp = 110 + 1.5Q² (in ft), with Q in units of thousands of gallons of water per minute.Please estimate the discharge and brake horsepower (BHP) required for (a) one pump, (b) two pumps inparallel, and (c) two pumps in series.Total head, ftn = 1170 r/min80070036-in dia.60032-in dia.50040028-in dia.30065%72%78%%78-1500 bhp200081216NPSH85%87%88%202087%x3500 bhp3000 bhp2500 bhp2000 bhp2428U.S. gallons per minute x 1000503020NPSH, ft

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Answered: Problem 2 The 32-in diameter pump has a…

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

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Problem 2
The 32-in diameter pump has a performance curve as below. The pump is used at 1170 rpm in a system
whose head curve is hp = 110 + 1.5Q² (in ft), with Q in units of thousands of gallons of water per minute.
Please estimate the discharge and brake horsepower (BHP) required for (a) one pump, (b) two pumps in
parallel, and (c) two pumps in series.
Total head, ft
n = 1170 r/min
800
700
36-in dia.
600
32-in dia.
500
400
28-in dia.
300
65%
72%
78%
%78-
1500 bhp
200
0
8
12
16
NPSH
85%
87%
88%
20
20
87%x
3500 bhp
3000 bhp
2500 bhp
2000 bhp
24
28
U.S. gallons per minute x 1000
50
30
20
NPSH, ft

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