A pump is required to deliver 50 gpm (0.003155 m³/s) of water at 25°C f head difference AH of 2.75 m. (a) Select a suitable pipe size, schedule 40, using Table D.1 and Table (b) Select a suitable pump impeller from Figure D.1 and determine ti suction head required NPSHR. (c) Neglecting frictional effects, determine where the pump inlet should b level of water in the tank shown in Figure 1. The water surface is exposed to atmospheric pressure. Take the water density (p) to be 1000 kg/m³. TABLE D.1 Pipe dimensions. Nominal Outside Diameter Inside Diameter in. (ft) cm Schedule Flo ft? Diameter ft cm 40 (std) 0.02242 80 (xs) 0.01792 1/8 0.00039 0.405 (0.03375) 1.029 0.683 0.547 0.00025 0.540 (0.045) 0.03033 0.02517 0.924 0.768 1/4 1.372 40 (std) 80 (xs) 0.00072 0.00049 0.675 (0.05625) 3/8 1.714 40 (std) 0.04108 80 (xs) 1.252 0.00132 1.074 0.00097. 0.03525 1.580 0.00211 1.386 0.00162 1.178 0.00117 0.640 0.00034 1/2 2.134 40 (std) 0.05183 80 (xs) 0.04550 160 (Xxs) 0.02100 0.840 (0.070) 0.03867 3/4 1.050 (0.0875) 2.667 40 (std) 0.06867 80 (xs) 160 (xxs) 0.03617 2.093 0.00370 1.883 0.06183 0.05100 0.00300 1.555 0.00204 1.103 0.00102 40 (std) 0.08742 80 (xs) 160 (Xxs) 0.04992 1 1.315 (0.1095) 3.340 0.07975 0.06792 2.664 0.00600 2.430 0.00499 2.070 0.00362 1.522 0.00195 14 1.660 (0.1383) 40 (std) 0.1150 80 (xs) 160 (Xxs) 0.07467 4.216 3.504 3.246 2.946 2.276 0.01039 0.00890 0.00733 0.00437 0.1065 0.09667 0124 L000 0.01
A pump is required to deliver 50 gpm (0.003155 m³/s) of water at 25°C f head difference AH of 2.75 m. (a) Select a suitable pipe size, schedule 40, using Table D.1 and Table (b) Select a suitable pump impeller from Figure D.1 and determine ti suction head required NPSHR. (c) Neglecting frictional effects, determine where the pump inlet should b level of water in the tank shown in Figure 1. The water surface is exposed to atmospheric pressure. Take the water density (p) to be 1000 kg/m³. TABLE D.1 Pipe dimensions. Nominal Outside Diameter Inside Diameter in. (ft) cm Schedule Flo ft? Diameter ft cm 40 (std) 0.02242 80 (xs) 0.01792 1/8 0.00039 0.405 (0.03375) 1.029 0.683 0.547 0.00025 0.540 (0.045) 0.03033 0.02517 0.924 0.768 1/4 1.372 40 (std) 80 (xs) 0.00072 0.00049 0.675 (0.05625) 3/8 1.714 40 (std) 0.04108 80 (xs) 1.252 0.00132 1.074 0.00097. 0.03525 1.580 0.00211 1.386 0.00162 1.178 0.00117 0.640 0.00034 1/2 2.134 40 (std) 0.05183 80 (xs) 0.04550 160 (Xxs) 0.02100 0.840 (0.070) 0.03867 3/4 1.050 (0.0875) 2.667 40 (std) 0.06867 80 (xs) 160 (xxs) 0.03617 2.093 0.00370 1.883 0.06183 0.05100 0.00300 1.555 0.00204 1.103 0.00102 40 (std) 0.08742 80 (xs) 160 (Xxs) 0.04992 1 1.315 (0.1095) 3.340 0.07975 0.06792 2.664 0.00600 2.430 0.00499 2.070 0.00362 1.522 0.00195 14 1.660 (0.1383) 40 (std) 0.1150 80 (xs) 160 (Xxs) 0.07467 4.216 3.504 3.246 2.946 2.276 0.01039 0.00890 0.00733 0.00437 0.1065 0.09667 0124 L000 0.01
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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Transcribed Image Text:A pump is required to deliver 50 gpm (0.003155 m³/s) of water at 25°C from a tank at a
head difference AH of 2.75 m.
(a) Select a suitable pipe size, schedule 40, using Table D.1 and Table D.2.
(b) Select a suitable pump impeller from Figure D.1 and determine the net positive
suction head required NPSHR.
(c) Neglecting frictional effects, determine where the pump inlet should be with respect to the
level of water in the tank shown in Figure 1.
The water surface is exposed to atmospheric pressure.
Take the water density (p) to be 1000 kg/m³.
TABLE D.1 Pipe dimensions.
Nominal
Diameter
Outside Diameter
Inside Diameter
Flow Area
in. (ft)
cm Schedule
ft
cm
ft2
cm
40 (std) 0.02242
0.01792
80 (xs)
1/8
0.405
(0.03375)
1.029
0.683
0.547 0.0002522 0.235 0
0.0003947 0.366 4
0.03033
0.02517
1.372
0.924
0.768 0.0004974 0.463 2
1/4
0.540
(0.045)
40 (std)
80 (xs)
0.0007227 0.670 6
3/8
0.675
(0.05625)
1.714
40 (std) 0.04108
80 (xs)
0.03525
1.074 0.0009759 0.905 9
0.840
(0.070)
1/2
2.134
40 (std) 0.05183
80 (xs) 0.04550
160
(Xxs) 0.02100
0.002110 1.961
1.386 0.001626 1.508
1.178 0.001174 1.090
0.640 0.0003464 0.321 7
0.03867
3/4
1.050
(0.0875)
40 (std) 0.06867
80 (xs)
160
(Xxs) 0.03617
2.667
2.093 0.003703 3.441
1.883
1.555 0.002043 1.898
1.103 0.001027 0.955 5
0.06183
0.05100
0.003003 2.785
40 (std) 0.08742
80 (xs)
160
(Xxs) 0.04992
1.315
(0.1095)
2.664 0.006002 5.574
2.430 0.004995 5.083
2.070 0.003623 3.365
1.522 0.001957 1.815
1
3.340
0.07975
0.06792
14
40 (std) 0.1150
80 (xs)
160
(Xxs) 0.07467
1.660
4.216
3.504 0.01039
3.246 0.008908 8.275
2.946 0.007339 6.816
2.276 0.004379 4.069
9.643
0.1065
0.09667
(0.1383)
1/2
40 (std) 0.1342
80 (xs)
160
(Xxs) 0.09167
1.900
(0.1583)
4.826
4.090
0.01414 13.13
0.1250
0.1115
3.810 0.01227 11.40
3.398 0.009764 9.068
2.794 0.007700 6.131
2.375
(0.1979)
40 (std) 0.1723
80 (xs) 0.1616
160
(xxs) 0.1253
2
6.034
5.252 0.02330 21.66
4.926 0.02051 19.06
4.286 0.01552 14.43
3.820 0.01232 11.46
0.1406
Transcribed Image Text:Heptan he
39-78
Table D.2
Economic Velocity Range
Fluid
ft/s
m/s
Acetone
Ethyl Alcohol
Methyl Alcohol
Propyl Alcohol
Benzene
Carbon Disulfide
Carbon Tetrachloride
Castor Oil
Chloroform
4.9-9.8
4.8-9.6
4.8-9.6
4.7–9.4
4.6-9.2
4.2–8.4
1.5-3.0
1.5-3.0
1.5-3.0
1.4-2.8
1.4-2.8
1.3-2.6
1.2-2.4
05-10
51.0
1.6-3.2
4.0-8.0
4.9-9.8
5.0-10.0
3.9-7.8
4.0-8.0
1.4-2.8
5.1-10.2
Pecane
Ether
Ethylene Glycol
R-11
1.2-2.4
1.2-2.4
0.43-0.86
1.5-3.0
1.6-3.2
1.4-2.8
15-3.0
0,64-1.3
1.5-3.0
1.7-3.4
1.7-3.4
1.4-2.8
1.4-2.8
1.4-2.8
Hexane
Kerosene
Linseed Oil
49-98
2.1-4.2
5.0-10.0
5.6-11.2
5.5-11.0
4.5-9.0
4.6-9.2
4.4-8.8
Mercury
Octane
Propane
Propylene
Propylene Glycol
Turpentine
Water
Capacity Curves
Based on water at 70°F (22°C)
Model: TF-C114
60 Hz
1750 RPM
Size: 1-1/2 x 1-1/2 x 4
CUBIC METERS PER HOUR
15
20
20
40 OIMPELLER DIAMETER (INCHESI
3.75
5
15
35
-3 25
10
30
-275
10
20
30
40
50
60
70
80
90
100
US GALLONS PER MINUTE
CUBIC METERS PER HOUR
10
15
20
30
20
10
FEET NPSHR METERS
10
20
30
40
50
60
70
80
90
100
US GALLONS PER MINUTE
NOTES:
1 Impeller diameters avalable in 1/4 inch increments
4 Kgicm - Head in Meters X Specific Gravity
O HP x0.746 - Kw
10
2) NPSHR is shown for maximum impeller diameter
(3 PSI - Head n Feet X Specific Gravity
2.3
FEET
HEAD IN FEET 3
HEAD IN METERSS O
METERS
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