d Box the final Answer ( Show all steps ) Question : A good curve-fit to the head vs. flow for the 32-inch pump in the image shown below is: H(inft)≈500−(2.9E−7)Q2, Q in gal/min Assume the same rotation rate, 1170 r/min, and estimate the flow rate this pump will provide to deliver water from a reservoir, through 900 ft of 12-inch pipe, to a point 150 ft above the reservoir surface. Assume a friction factor f = 0.019. What is the pump efficiency at
d Box the final Answer ( Show all steps ) Question : A good curve-fit to the head vs. flow for the 32-inch pump in the image shown below is: H(inft)≈500−(2.9E−7)Q2, Q in gal/min Assume the same rotation rate, 1170 r/min, and estimate the flow rate this pump will provide to deliver water from a reservoir, through 900 ft of 12-inch pipe, to a point 150 ft above the reservoir surface. Assume a friction factor f = 0.019. What is the pump efficiency at
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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SOLVE CAREFULLY!! Please Write Clearly and Box the final Answer ( Show all steps )
Question : A good curve-fit to the head vs. flow for the 32-inch pump in the image shown below is:
H(inft)≈500−(2.9E−7)Q2, Q in gal/min
Assume the same rotation rate, 1170 r/min, and estimate the flow rate this pump will provide to deliver water from a reservoir, through 900 ft of 12-inch pipe, to a point 150 ft above the reservoir surface. Assume a friction factor f = 0.019.
What is the pump efficiency at this operating point???
HINT : 150 ft above the reservoir surface.
Transcribed Image Text:50
n= 1170 r/min
800
NPSH
20
700
36 in dia.
600
32-in dia.
500
400
28-in dia.
2000 bhp
1500 bhp
300
200
20
24
28
12
16
U.S. gallons per minute x 1000
(a)
NPSH, ft
S78-
%84
87%
3500 bhp
3000 bhp
2500 bhp
Total head, ft
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