Consider the duct system shown in the accompanying figure. The air flows from the 8"x12" duct into a 4"x6" duct steadily. The average speed of the air in the 4"x6" duct is 30 ft/s. What is the volume flow rate of air in the 8"x12" duct? Express the volume flow rate in ft3/s, ft3/min, and m3/s. What is the average speed of air in the 8"x12" duct? 4" x 6" V2 8" x 12" V1 Cross-sectional Area of 4"x6" = 24 in? %3D Cross-sectional Area of 8"x12" = 96 in? %3D V2 = 30 ft/s Recall: Q (Flow rate) = (ave. speed) (cross-sectional area)

Consider the duct system shown in the accompanying figure. The air flows from the 8"x12" duct into a 4"x6" duct steadily. The average speed of the air in the 4"x6" duct is 30 ft/s. What is the volume flow rate of air in the 8"x12" duct? Express the volume flow rate in ft3/s, ft3/min, and m3/s. What is the average speed of air in the 8"x12" duct? 4" x 6" V2 8" x 12" V1 Cross-sectional Area of 4"x6" = 24 in? %3D Cross-sectional Area of 8"x12" = 96 in? %3D V2 = 30 ft/s Recall: Q (Flow rate) = (ave. speed) (cross-sectional area)

Engineering Fundamentals: An Introduction to Engineering (MindTap Course List)

5th Edition

ISBN:9781305084766

Author:Saeed Moaveni

Publisher:Saeed Moaveni

Chapter9: Mass And Mass-related Variables In Engineering

Section: Chapter Questions

Problem 46P

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