Shown in the Figure is the complete pump performance chart for a 3x4-10 centrifugal pump at 1750 rpm. The centrifugal pump must deliver at least 200 gal/min of water at the total head of 50 ft. (1) Which impeller should be selected?
Shown in the Figure is the complete pump performance chart for a 3x4-10 centrifugal pump at 1750 rpm. The centrifugal pump must deliver at least 200 gal/min of water at the total head of 50 ft. (1) Which impeller should be selected?
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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Shown in the Figure is the complete pump performance chart for a 3×4-10 centrifugal pump at 1750 rpm. The centrifugal pump must deliver at least 200 gal/min of water at the total head of 50 ft.
(1) Which impeller should be selected? _________
A. 9 in
B. 8 in
C. 7 in
D. 10 in
Transcribed Image Text:Shown in the Figure is the complete pump performance chart for a 3×4-10 centrifugal pump
at 1750 rpm. The centrifugal pump must deliver at least 200 gal/min of water at the total
head of 50 ft.
(1) Which impeller should be selected?
Impeller diameter
10 in
Total head (m)
NPSH, (m)
35
30
25
20
15
10
MN-O
110
100
NPSH, (1)
8 8 8
909 in
80
Total head (ft)
8
2018 in
60
50
406 in
30
20
S
10
0
10.0
7.5
ū
5.0
2.5
0
7 in
O A 9 in
OB. 8 in
O C.7 in
O D. 10 in
0
0
43 53
43
200
-61
1.5 HP.
400
65 609
Impeller 6 in.
71
600
72 73 73.9
53
3 HP-
7 in
5 HP
800
Capacity (L/min)
1000
2 HP
25 50 75 100 125 150 175 200 225 250 275 300 325 350 375 400 425
8 in
73
72
1200
<63
71
7.5 HP
25 50 75 100 125 150 175 200 225 250 275 300 325 350 375 400 425
Capacity (gal/min)
-9 in-
3x4-10
1750 RPM
1400
69
10 HP
-10 in
1600
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