Q: A farmer is to pump water from a river to a water storage tank nearby using a 125- ft-long, 5-in-diameter plastic pipe with three flanged 90° smooth bends. The water velocity near the river surface is 6 ft/s, and the pipe inlet is placed in the river normal to the flow direction of water to take advantage of the dynamic pressure. The elevation difference between the river and the free surface of the tank is 12 ft. For a flow rate of 1.5 ft/s and an overall pump efficiency of 70 percent, determine the required electric power input to the pump. The density and dynamic viscosity of water are p = 62.30 lb/ft³ and u = 6.556×104 lb/ft-s. The roughness of galvanized iron pipe is ɛ = 0.0005 ft. (Kelbows = 0.3 each), and a sharp-edged exit (KL = 1.0). Neglect losses at entrance. Use the following equation to solve for f and compare it with Moody chart. e/D 2.51 -2log + 3.7 Colebrook equation ..... .... Revi) 2 5 in Water 125 ft tank 12 ft 1.5 ft'/s River

Q: A farmer is to pump water from a river to a water storage tank nearby using a 125- ft-long, 5-in-diameter plastic pipe with three flanged 90° smooth bends. The water velocity near the river surface is 6 ft/s, and the pipe inlet is placed in the river normal to the flow direction of water to take advantage of the dynamic pressure. The elevation difference between the river and the free surface of the tank is 12 ft. For a flow rate of 1.5 ft/s and an overall pump efficiency of 70 percent, determine the required electric power input to the pump. The density and dynamic viscosity of water are p = 62.30 lb/ft³ and u = 6.556×104 lb/ft-s. The roughness of galvanized iron pipe is ɛ = 0.0005 ft. (Kelbows = 0.3 each), and a sharp-edged exit (KL = 1.0). Neglect losses at entrance. Use the following equation to solve for f and compare it with Moody chart. e/D 2.51 -2log + 3.7 Colebrook equation ..... .... Revi) 2 5 in Water 125 ft tank 12 ft 1.5 ft'/s River

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Concept explainers

Pressurized pipe flow

A 15-kilometer-long pipe with a pipe diameter of one meter transports water at a speed of one meter per second. The pipe has a friction coefficient of 0.005. Calculate the frictional head loss?

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Q: A farmer is to pump water from a river to a water storage tank nearby using a 125-
ft-long, 5-in-diameter plastic pipe with three flanged 90° smooth bends. The water
velocity near the river surface is 6 ft/s, and the pipe inlet is placed in the river normal
to the flow direction of water to take advantage of the dynamic pressure. The elevation
difference between the river and the free surface of the tank is 12 ft. For a flow rate of
1.5 ft/s and an overall pump efficiency of 70 percent, determine the required electric
power input to the pump. The density and dynamic viscosity of water are p = 62.30
lb/ft³ and u = 6.556×104 lb/ft-s. The roughness of galvanized iron pipe is ɛ = 0.0005
ft. (Kelbows = 0.3 each), and a sharp-edged exit (KL = 1.0). Neglect losses at entrance.
Use the following equation to solve for f and compare it with Moody chart.
e/D
2.51
-2log
+
3.7
Colebrook equation
..... ....
Revi)
2
5 in
Water
125 ft
tank
12 ft
1.5 ft'/s
River

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