Answered: • What is the average velocity of air…

• What is the average velocity of air in the duct? • Assume that the inner surface of the duct is smooth, what is the pressure drop over 100 ft of this duct?

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Question

Air ducts in buildings are vital for ventilation. Assume
that through a duct of 1 ft diameter, 3000 cubic feet of
air is refreshed every hour.
• What is the average velocity of air in the duct?
• Assume that the inner surface of the duct is
smooth, what is the pressure drop over 100 ft of
this duct?
Air's density = 1.225 kg/m3; Air's viscosity = 0.018 cp

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