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- 9. The temperature profile in a certain material is steady and linear, as shown in Figure P2.2. At surface 1, the temperature is 30°C. At surface 2, the temperature is 20°C. On the right side of the wall is air flowing at a free-stream velocity of 2 m/s. The area is 0.2 X 0.2 m, and the convective heat-transfer coefficient is 12 W/(m². K). The free-stream air temperature is 10°C. Determine the thermal conductivity of the wall material. T1 Principal T2 X L T1 T2 L/kA perature distribution within a plane wall.

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The area over which the wall is convecting is A = 0:2 x 0:2 = 0:04m²
Free stream air velocity on right wall is Voo = 2m/s
Temperature on left side Tl = 3...

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