12.21 WILEY A centrifugal pump with a 7-in.-diameter impeller has the performance characteristics shown in Fig. 12.12. The pump is used to pump water at 100 °F, and the pump inlet is located 12 ft above the open water surface. When the flowrate is 200 gpm, the head loss between the water surface and the pump inlet is 6 ft of water. Would you expect cavitation in the pump to be a problem? Assume standard atmospheric pressure. Explain how you arrived at your answer.

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
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Please list any assumptions and answer all parts. Fig 12.12 is attatched

12.21 LEY A centrifugal pump with a 7-in.-diameter impeller has
the performance characteristics shown in Fig. 12.12. The pump is
used to pump water at 100 °F, and the pump inlet is located 12 ft
above the open water surface. When the flowrate is 200 gpm, the
head loss between the water surface and the pump inlet is 6 ft of
water. Would you expect cavitation in the pump to be a problem?
Assume standard atmospheric pressure. Explain how you arrived
at your answer.
Transcribed Image Text:12.21 LEY A centrifugal pump with a 7-in.-diameter impeller has the performance characteristics shown in Fig. 12.12. The pump is used to pump water at 100 °F, and the pump inlet is located 12 ft above the open water surface. When the flowrate is 200 gpm, the head loss between the water surface and the pump inlet is 6 ft of water. Would you expect cavitation in the pump to be a problem? Assume standard atmospheric pressure. Explain how you arrived at your answer.
500
Head, ft
# 300
400 7
200
100
0
8 in. dia
0
6
40
1
Figure 12.12
© John Wiley & Sons, Inc. All rights reserved.
-50%
55
09
NPSHR
63
1
1
65
15
+
1
80 120 160 200
Capacity, gal/min
V
240
65
63
60
50
55
40 bhp
30
25
20
280 320
15
10-
505
NPSHR, ft
Transcribed Image Text:500 Head, ft # 300 400 7 200 100 0 8 in. dia 0 6 40 1 Figure 12.12 © John Wiley & Sons, Inc. All rights reserved. -50% 55 09 NPSHR 63 1 1 65 15 + 1 80 120 160 200 Capacity, gal/min V 240 65 63 60 50 55 40 bhp 30 25 20 280 320 15 10- 505 NPSHR, ft
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