Sustainable Energy
Sustainable Energy
2nd Edition
ISBN: 9781337551663
Author: DUNLAP, Richard A.
Publisher: Cengage,
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Chapter 3, Problem 20P

(a)

To determine

Find the average velocity of the oil in the pipe.

(b)

To determine

Calculate the rate of chemical energy flow through the pipe.

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5p In the figure, the pipe losses are one and a half times the velocity head at point 2 (1.5v^2/2g.) What is the value of v2? In the figure, the pipe losses are one and a half times the velocity head at point 2 (1.5v₂/2g.) What is the value of v₂? Air: 20 lb /in2 gage Gasoline = 0.68 D = 2 in Water O 76.39 ft/s 37.25 ft/s O 50.7 ft/s 30.5 ft/s 5 ft Fig. 8-66
An oil of density 850 kg/m3 is pumped in a pipe of diameter 20 cm. The discharge is measured as 0.015 m/s. The drop in pressure in a length of 800 m of pipeline, both ends of which are at the same elevation is measured as 98 kPa. Assuming Re < 2000, calculate the value of absolute viscosity of the oil.
4.) A quart of SAE 30 oil at 68 °F weighs about 1.85 lb. Calculate the oil's specific weight, mass density, and specific gravity.
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