Problem T2: A pump is required to lift 35 l/s of water from reservoir A to service reservoir B. Water levels are as shown in Figure 1, and are assumed to be constant. Friction factor f for the 150mm pipe = 0.03; and for the 200mm pipe is 0.02. Consider the pressure at B to be atmospheric pressure a) calculate the total head for the pump in the Fig. b) If the efficiency of the pump 55%; estimate the shaft power OPipe outlet- B Pump Q 35L/s- 116.0 m elevation 6Swing check valve fully open 150 mm gate valve fully open- -150 mm gate valve 50% open VEREVERS difference 150 mm pipe -4150 mm elbow 3Square inlet 150 mm pipe total length 80 m k values in valves and fittings: @ 3=0.5 @5= 0.2 @4= 0.6 @ 10= 1.0 OVICA 9200 mm long radius 1000 200 mm pipe 8Sudden enlargement 2200 mm pipe total length 40 m @ 9= 0.3 @7=2.4 @6=1.3 @8= 0.2
Problem T2: A pump is required to lift 35 l/s of water from reservoir A to service reservoir B. Water levels are as shown in Figure 1, and are assumed to be constant. Friction factor f for the 150mm pipe = 0.03; and for the 200mm pipe is 0.02. Consider the pressure at B to be atmospheric pressure a) calculate the total head for the pump in the Fig. b) If the efficiency of the pump 55%; estimate the shaft power OPipe outlet- B Pump Q 35L/s- 116.0 m elevation 6Swing check valve fully open 150 mm gate valve fully open- -150 mm gate valve 50% open VEREVERS difference 150 mm pipe -4150 mm elbow 3Square inlet 150 mm pipe total length 80 m k values in valves and fittings: @ 3=0.5 @5= 0.2 @4= 0.6 @ 10= 1.0 OVICA 9200 mm long radius 1000 200 mm pipe 8Sudden enlargement 2200 mm pipe total length 40 m @ 9= 0.3 @7=2.4 @6=1.3 @8= 0.2
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:Problem T2:
A pump is required to lift 35 l/s of water from reservoir A to service reservoir B.
Water levels are as shown in Figure 1, and are assumed to be constant. Friction
factor f for the 150mm pipe = 0.03; and for the 200mm pipe is 0.02. Consider the
pressure at B to be atmospheric pressure
a) calculate the total head for the pump in the Fig.
b) If the efficiency of the pump is 55%; estimate the shaft power
OPipe outlet-
B
Pump Q = 35L/s-
116.0 m
-Swing check valve
fully open
150 mm gate
150 mm gate valve
50% open
valve fully open-
9200 mm long radius-
200 mm pipe
Sudden enlargement
2200 mm pipe total length 40 m
@ 9= 0.3
elevation
difference
A
150 mm pipe
-4150 mm elbow
3Square inlet
1150 mm pipe total
length 80 m
k values in valves and fittings:
@ 3=0.5
@5=0.2
@4= 0.6
10 1.0
www
Versch
@7=2.4
@6=1.3
@8= 0.2
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