Pressure difference required for pipe with elevation change. Water at 68°F is to be pumped through 95 ft of standard 3-in. pipe (internal diameter 3.068 in.) into an overhead reservoir as illustrated in Fig. 6A.2. 30'- 6A 2 n:

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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Pressure difference required for pipe with elevation change. Water at 68°F is to be pumped
through 95 ft of standard 3-in. pipe (internal diameter 3.068 in.) into an overhead reservoir as
illustrated in Fig. 6A.2.
30'-
Fig. 6A.2 Pipe flow system.
45° elbow
45° elbow
Pump
50
45°
15'-
(a) What pressure is required at the outlet of the pump to supply water to the overhead reser-
voir at a rate of 18 gal/min? At 68°F the viscosity of water is 1.002 cp and the density is
0.9982 g/ml.
(b) What percentage of the pressure drop (pump outlet to reservoir) is needed for overcoming
the pipe friction?
Answer: (a) 15.3 psig
Transcribed Image Text:Pressure difference required for pipe with elevation change. Water at 68°F is to be pumped through 95 ft of standard 3-in. pipe (internal diameter 3.068 in.) into an overhead reservoir as illustrated in Fig. 6A.2. 30'- Fig. 6A.2 Pipe flow system. 45° elbow 45° elbow Pump 50 45° 15'- (a) What pressure is required at the outlet of the pump to supply water to the overhead reser- voir at a rate of 18 gal/min? At 68°F the viscosity of water is 1.002 cp and the density is 0.9982 g/ml. (b) What percentage of the pressure drop (pump outlet to reservoir) is needed for overcoming the pipe friction? Answer: (a) 15.3 psig
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