Consider a permanent one-dimensional heat conduction on a flat wall of length L = 0.4 m and constant thermal conductivity equal to 0.9 W/m.K, without heat generation. a) If the inner wall is T(0) = 140°C and receives a constant thermal flux of q', = 400 W/m?, what is the temperature at the outer surface, T(L) = ? b) If T(0) = 50°C and the outside of the wall is exposed to air convection at 25°C and h=10 W/k.m?, what is the temperature on the outside surface, T(L)?

Consider a permanent one-dimensional heat conduction on a flat wall of length L = 0.4 m and constant thermal conductivity equal to 0.9 W/m.K, without heat generation. a) If the inner wall is T(0) = 140°C and receives a constant thermal flux of q', = 400 W/m?, what is the temperature at the outer surface, T(L) = ? b) If T(0) = 50°C and the outside of the wall is exposed to air convection at 25°C and h=10 W/k.m?, what is the temperature on the outside surface, T(L)?

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.

Chapter2: Steady Heat Conduction

Section: Chapter Questions

Problem 2.47P

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