(5 pts) From the figure below, pick the best impeller size for a pump with a flowrate of 40U gpi The pump head curve is shown on the figure. 100 9.5 90 1750 RPM 9 80 8.5" 70 8 TOTAL 60 HEAD 7.5 74% 70 94 79.5%

Structural Analysis
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ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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4. (5 pts) From the figure below, pick the best impeller size for a pump with a flowrate of 400 gpm.
The pump head curve is shown on the figure.
कि ल
100
1750 RPM
9.5
90
9
80
79
8.5"
70
74%
70
8"
TOTAL
HEAD
IN
FEET
60
7.5
SHP
50 - 7
40
40
10HP
NPSHR
30
IN
30
HP
20
20 FEET
10
10
0.
100
200
300
400
500
600
700
800
US GALLONS PER MINUTE
(5 pts) What is the efficiency at this point (to the nearest half of a percent)?78.97.
(5 pts) What is the (NPSH)req'd at this point (in feet)?
79.5
SHP
Transcribed Image Text:4. (5 pts) From the figure below, pick the best impeller size for a pump with a flowrate of 400 gpm. The pump head curve is shown on the figure. कि ल 100 1750 RPM 9.5 90 9 80 79 8.5" 70 74% 70 8" TOTAL HEAD IN FEET 60 7.5 SHP 50 - 7 40 40 10HP NPSHR 30 IN 30 HP 20 20 FEET 10 10 0. 100 200 300 400 500 600 700 800 US GALLONS PER MINUTE (5 pts) What is the efficiency at this point (to the nearest half of a percent)?78.97. (5 pts) What is the (NPSH)req'd at this point (in feet)? 79.5 SHP
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