Sustainable Energy
2nd Edition
ISBN: 9781337551663
Author: DUNLAP, Richard A.
Publisher: Cengage,
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Chapter 1, Problem 20P
To determine
Find the time required to increase the temperature of water by 20°.
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13. The front of the platoon (truck) has a speed of 30 mph in question 12. According to the shockwave
speed, the platoon is growing at a rate of:
A tank transmits 100 L/s of water to point C, where the pressure is maintained at 1.5 kg/cm².
The first part, AB of the pipe, is 50 cm in diameter and 2.5 km long, and the second part BC is
25 cm in diameter and 1.5 km long. The friction coefficient is 0.005, and minor losses are
ignored. Assuming the level at C is (0.0), find the water level (L) in the tank.
L
A
B
с
hAB
hBC
bc
Given a portion of a pipe network below. Determine the true discharge in each pipe using the
Hardy-Cross method. Use the Darcy-Weisbach formula with f = 0.02 for all pipes.
Pipe
AB
Length (m)
Diameter (cm)
600
25
BC
400
25
CD
900
30
DA
AC
1000
20
1500
20
Q₁₁ = 0.20 m³/s
B
Qc = 0.30 m³/s
Loop I
QA 0.10 m³/s A.
C
Loop II
Q₁ = 0.20 m³/s
Chapter 1 Solutions
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