4-24 A semi-infinite slab of material having k = 0.1 W/m . °C and a= 1.1 x 10-7m2/s is maintained at an initially uniform temperature of 20°C. Calculate the temperature at a depth of 5 cm after 100 s if (a) the surface temperature is suddenly raised to 150°C, (b) the surface is suddenly exposed to a convection source with h = 40 W/m2 . °C and 150°C, and (c) the surface is suddenly exposed to a constant heat flux of 350 W/m2.
4-24 A semi-infinite slab of material having k = 0.1 W/m . °C and a= 1.1 x 10-7m2/s is maintained at an initially uniform temperature of 20°C. Calculate the temperature at a depth of 5 cm after 100 s if (a) the surface temperature is suddenly raised to 150°C, (b) the surface is suddenly exposed to a convection source with h = 40 W/m2 . °C and 150°C, and (c) the surface is suddenly exposed to a constant heat flux of 350 W/m2.
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.
Chapter4: Numerical Analysis Of Heat Conduction
Section: Chapter Questions
Problem 4.12P
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