A wall, as shown in figure, consists of four layers, with thermal conductivities, kį = 0.060 W/m.K, k3 = 0.040 W/m.K, and k4 = 0.12 W/m.K (k2 is not known). The layer thicknesses are L1 = 1.5 cm, L3 = 2.8 cm, and L4 = 3.5 cm (L2 is not known). The known temperatures are T1 = 50°C, T12 = 35°C and T4 = -10°C. Energy transfer through the wall is steady. Apply the concept of steady- state heat transfer through conduction on the wall, and determine the interface temperature T34? k ks - T4 T12 -L- L3 - L4

A wall, as shown in figure, consists of four layers, with thermal conductivities, kį = 0.060 W/m.K, k3 = 0.040 W/m.K, and k4 = 0.12 W/m.K (k2 is not known). The layer thicknesses are L1 = 1.5 cm, L3 = 2.8 cm, and L4 = 3.5 cm (L2 is not known). The known temperatures are T1 = 50°C, T12 = 35°C and T4 = -10°C. Energy transfer through the wall is steady. Apply the concept of steady- state heat transfer through conduction on the wall, and determine the interface temperature T34? k ks - T4 T12 -L- L3 - L4

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 2.38P: 2.38 The addition of aluminum fins has been suggested to increase the rate of heat dissipation from...

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