Air at 15 m/s is cooled from 80 C to 60 C in 2.5cm diameter tube. The tube wall is maintained at a constant temperature of 20 C. Air properties at 80 C are Pr= 0.581, dynamic viscosity 3.57 x 10^5 Kg- /m•s,thermal conductivity = 0.06 W/m-C, cp=1.5KJ/Kg-C and density = 1.5 Kg/ m^3.Calculate the length of the cylinder in m.

Air at 15 m/s is cooled from 80 C to 60 C in 2.5cm diameter tube. The tube wall is maintained at a constant temperature of 20 C. Air properties at 80 C are Pr= 0.581, dynamic viscosity 3.57 x 10^5 Kg- /m•s,thermal conductivity = 0.06 W/m-C, cp=1.5KJ/Kg-C and density = 1.5 Kg/ m^3.Calculate the length of the cylinder in m.

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter7: Forced Convection Inside Tubes And Ducts

Section: Chapter Questions

Problem 7.20P

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title of the book: Engineering ThermofluidsThermodynamics, Fluid Mechanics, and Heat Transfer by Mahmoud Massoud