a) Develop an equation for the head (in ft) developed by the pump described by the chartas a function of flow rate (in gpm) when the pump uses a 9 ¾” impeller. b) Develop an equation for the pump efficiency as a function of flow rate (gpm) when the pump uses a 9 ¾” impeller. TOTAL HEAD IN METERS30252015H▬▬▬▬▬▬▬▬▬10TOTAL HEAD IN FEET100908070605040302010000FOR 5x5x9%B CENTRIFUGAL PUMP FIG. NO. VSCCURVES BASED ON SHOP TEST USING CLEAR COLD WATER AT A TEMPERATURE OF NOTOVER 85°F. PERFORMANCE IS GUARANTEED AT INDICATED OPERATING POINT ONLY.-9%"--8%"7%"6%"5%"-40%-50% -60%JAImpellers are trimmed in % incre-ments to supply required capacity.Responsibility for final impeller siz-ing remains with ITT Bell & GossettLI 1 LLLLL100200PERFORMANCE CHARACTERISTIC CURVE5070%-75%3HP-78%-APPROVED R.279.5%100CAPACITY IN CUBIC METERS/HR5HPNPSH REQUIRED3000 400500600CAPACITY IN U.S. GALLONS PER MINUTE150SPEED7½HP7001750 R.P.M.DATE 10-8-805x5x9³34B1750 R.P.M.78%10HP80075%-70%-15HP90020060%-20HP-NPSH FEET4030201001000NPSH METERS10-5

To find the equation for head developed by the pump and pump efficiency from the above chart for the…

Answered: a) Develop an equation for the head (in…

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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Question

a) Develop an equation for the head (in ft) developed by the pump described by the chart
as a function of flow rate (in gpm) when the pump uses a 9 ¾” impeller.
b) Develop an equation for the pump efficiency as a function of flow rate (gpm) when the pump
uses a 9 ¾” impeller.

TOTAL HEAD IN METERS
30
25
20
15
H▬▬▬▬▬▬▬▬▬
10
TOTAL HEAD IN FEET
100
90
80
70
60
50
40
30
20
10
0
0
0
FOR 5x5x9%B CENTRIFUGAL PUMP FIG. NO. VSC
CURVES BASED ON SHOP TEST USING CLEAR COLD WATER AT A TEMPERATURE OF NOT
OVER 85°F. PERFORMANCE IS GUARANTEED AT INDICATED OPERATING POINT ONLY.
-9%"-
-8%"
7%"
6%"
5%"
-40%-50% -60%
JA
Impellers are trimmed in % incre-
ments to supply required capacity.
Responsibility for final impeller siz-
ing remains with ITT Bell & Gossett
LI 1 LLLLL
100
200
PERFORMANCE CHARACTERISTIC CURVE
50
70%
-75%
3HP
-78%-
APPROVED R.2
79.5%
100
CAPACITY IN CUBIC METERS/HR
5HP
NPSH REQUIRED
3000 400
500
600
CAPACITY IN U.S. GALLONS PER MINUTE
150
SPEED
7½HP
700
1750 R.P.M.
DATE 10-8-80
5x5x9³34B
1750 R.P.M.
78%
10HP
800
75%
-70%
-15HP
900
200
60%
-20HP-
NPSH FEET
40
30
20
10
0
1000
NPSH METERS
10
-5

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