4-Air at 20°C flows through a tube 8 cm dia with a velocity of 9 m/s. The tube wall is at 80°C. Determine for a tube length of 5 m, the exit temperature of air. For the first trial property value taken at 20°C. p = 1.205, v = 15.06 x 10-6 m2/s, Pr = 0.703. k = 0.02593 W/mK, C,= 1005 J/kg K. u = 18.14 x 10-6 kg/ms Nup = 0.023 Ref S Pr"

4-Air at 20°C flows through a tube 8 cm dia with a velocity of 9 m/s. The tube wall is at 80°C. Determine for a tube length of 5 m, the exit temperature of air. For the first trial property value taken at 20°C. p = 1.205, v = 15.06 x 10-6 m2/s, Pr = 0.703. k = 0.02593 W/mK, C,= 1005 J/kg K. u = 18.14 x 10-6 kg/ms Nup = 0.023 Ref S Pr"

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

4-Air at 20°C flows through a tube 8 cm dia with a velocity of 9 m/s. The tube wall is at 80°C. Determine for a
tube length of 5 m, the exit temperature of air.
For the first trial property value taken at 20°C. p = 1.205, v = 15.06 x 10-6 m/s, Pr
= 0.703. k = 0.02593 W/mK. C, = 1005 J/kg K. u = 18.14 x 10-6 kg/ms
Nup 0.023 RefS Pr"

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