110 100 30 Impeller diameter 10 53 65 3x4-10 1750 RPM 21 73.9 73 72 71 60 To head(m) 15 25 20 Totalhead() 90 in 30 708 in 60 7 in 50 406 in 10 30 45 13 HP 20 10 O 25 50 1210 (W) 'HSIN 10.0 NPSH,00 7.5 5.D 25 0 25 50 75 3 HP 10 HP 75HP 3P HP 75 100 125 150 175 200 225 250 275 300 325 350 375 400 425 Impeller 6in. 7 in 10 an 100 125 150 175 200 225 250 275 300 325 350 315 400 425 Capacity (gamin 0 200 400 600 800 1000 1300 1400 1600 Capacity (L/min) FIGURE 13.30 Performance for a 3 x 4-10 centrifugal pump at 1750 rpm. (Source: Reprinted by permission of ITT Corporation.)
110 100 30 Impeller diameter 10 53 65 3x4-10 1750 RPM 21 73.9 73 72 71 60 To head(m) 15 25 20 Totalhead() 90 in 30 708 in 60 7 in 50 406 in 10 30 45 13 HP 20 10 O 25 50 1210 (W) 'HSIN 10.0 NPSH,00 7.5 5.D 25 0 25 50 75 3 HP 10 HP 75HP 3P HP 75 100 125 150 175 200 225 250 275 300 325 350 375 400 425 Impeller 6in. 7 in 10 an 100 125 150 175 200 225 250 275 300 325 350 315 400 425 Capacity (gamin 0 200 400 600 800 1000 1300 1400 1600 Capacity (L/min) FIGURE 13.30 Performance for a 3 x 4-10 centrifugal pump at 1750 rpm. (Source: Reprinted by permission of ITT Corporation.)
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
Related questions
Question
Refer to the “composite performance chart” for a Goulds 3x4-10
centrifugal pump operating at 1750 rpm. It shows the pump performance curve for 5 different
impeller sizes, but also shows the HP required, efficiency, and NPSH required at different
operating points.
Describe the performance of this pump, using an 8 inch impeller and a required flow rate of
175 gpm. Give head available, power required (BHP), efficiency, and NPSH req’d.
What is the water horsepower (WHP)?
Transcribed Image Text:110
100
30
Impeller diameter
10
53
65
3x4-10
1750 RPM
21
73.9
73
72
71
60
To head(m)
15
25
20
Totalhead()
90 in
30
708 in
60
7 in
50
406 in
10
30
45
13 HP
20
10
O 25
50
1210
(W) 'HSIN
10.0
NPSH,00
7.5
5.D
25
0
25 50
75
3 HP
10 HP
75HP
3P
HP
75 100 125 150 175 200 225 250 275 300 325 350 375 400 425
Impeller
6in.
7 in
10 an
100 125 150 175 200 225 250 275 300 325 350 315 400 425
Capacity (gamin
0
200
400
600
800
1000
1300
1400
1600
Capacity (L/min)
FIGURE 13.30 Performance for a 3 x 4-10 centrifugal pump at 1750 rpm. (Source: Reprinted
by permission of ITT Corporation.)
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