8-41 Air enters a 10-m-long section of a rectangular duct of cross section 15 cm x 20 cm made of commercial steel at 1 atm and 35°C at an average velocity of 5 m/s. Disregarding the entrance effects, determine the fan power needed to overcome the pressure losses in this section of the duct. Answer: 2.55 W 15 cm Air 5 m/s 10 m 20 cm

Solid Waste Engineering
3rd Edition
ISBN:9781305635203
Author:Worrell, William A.
Publisher:Worrell, William A.
Chapter5: Separation Processes
Section: Chapter Questions
Problem 5.3P
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8-41 Air enters a 10-m-long section of a rectangular
duct of cross section 15 cm x 20 cm made of commercial
steel at 1 atm and 35°C at an average velocity of 5 m/s.
Disregarding the entrance effects, determine the fan power
needed to overcome the pressure losses in this section of the
duct. Answer: 2.55 W
15 cm
10 m
Air
5 m/s
FIGURE P8-41
20 cm
Transcribed Image Text:8-41 Air enters a 10-m-long section of a rectangular duct of cross section 15 cm x 20 cm made of commercial steel at 1 atm and 35°C at an average velocity of 5 m/s. Disregarding the entrance effects, determine the fan power needed to overcome the pressure losses in this section of the duct. Answer: 2.55 W 15 cm 10 m Air 5 m/s FIGURE P8-41 20 cm
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