Sustainable Energy
2nd Edition
ISBN: 9781337551663
Author: DUNLAP, Richard A.
Publisher: Cengage,
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Chapter 9, Problem 5P
To determine
Find the diameter of a mirror array associated with a solar power tower that would replace a
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7.43 Neglecting head losses, determine what horsepower the pump must deliver to produce the flow as shown. Here, the elevations at points A, B, C, and D are 124 ft, 161 ft, 110 ft, and 90 ft, respectively. The nozzle area is 0.10 ft².
B
Nozzle
Water
C
Problem 7.43
A 1.8m x 1.8m footing is located at a depth of 1 m below the ground surface in a deep deposit of compacted sand (f'= 33 , f' = 28 , γ = 17.5 kN/m). Calculate the ultimate net bearing capacity considering several factors (e.g., shape, depth, and inclination) when the groundwater table is located (a) at 5 m below the footing base, (b) at the ground surface, (c) at the footing base, and (d) at 1.5 m below the footing base. Also, explain the effects of the groundwater levels in the bearing capacities of the footing with your own words. If the information is not given for the calculation, please assume it reasonably.
7.18 Determine the discharge in the pipe and the pressure at point B. Neglect head losses. Assume α = 1.0 at all locations.
1.5 m
Water
B
3.5 m
40 cm diameter
-20 cm diameter nozzle
Problem 7.18
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