3. A 0.2 m thick wall having a thermal diffusivity of 2 x 10€ m²/s is initially at a uniform temperature of 100 °C. One side of the wall is suddenly lowered to a temperature 25 °C, while the other side is perfectly insulated. Using Ax = 50 mm and a time increment of 5 minutes, determine the temperature distribution (°C) after 15 minutes.

3. A 0.2 m thick wall having a thermal diffusivity of 2 x 10€ m²/s is initially at a uniform temperature of 100 °C. One side of the wall is suddenly lowered to a temperature 25 °C, while the other side is perfectly insulated. Using Ax = 50 mm and a time increment of 5 minutes, determine the temperature distribution (°C) after 15 minutes.

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 2.4P: A plane wall 15 cm thick has a thermal conductivity given by the relation k=2.0+0.0005T[W/mK] where...

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A plane wall 15 cm thick has a thermal conductivity given by the relation k=2.0+0.0005T[W/mK] where T is in kelvin. If one surface of this wall is maintained at 150C and the other at 50C, determine the rate of heat transfer per square meter. Sketch the temperature distribution through the wall.
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