A composite three layered wall is formed of a 0.5 cm thick alunminum plate, a 0.25 cm thick layer of sheet asbestos, and a 2.0 cm thick layer of rock wool (density = 64 kg/m'); the asbestos is the...

A composite three layered wall is formed of a 0.5 cm thick alunminum plate, a 0.25 cm<br>thick layer of sheet asbestos, and a 2.0 cm thick layer of rock wool (density = 64<br>kg/m'); the asbestos is the center layer. The outer aluminum surface is at 500°C, and<br>the other rock wool surface is at 50°C. Determine the heat flow per unit area. The<br>thermal conductivities of the materials are as follows:<br>Substance<br>Aluminum<br>Asbestos<br>Тетрerature<br>500°C<br>k(W/m-K)<br>268.08<br>93°C<br>0.17<br>Rock Wool<br>51°C<br>0.05<br>954 W/m?<br>b. 1085 W/m?<br>456 W/m?<br>d. 1840 W/m?<br>a.<br>с.<br>

Extracted text: A composite three layered wall is formed of a 0.5 cm thick alunminum plate, a 0.25 cm thick layer of sheet asbestos, and a 2.0 cm thick layer of rock wool (density = 64 kg/m'); the asbestos is the center layer. The outer aluminum surface is at 500°C, and the other rock wool surface is at 50°C. Determine the heat flow per unit area. The thermal conductivities of the materials are as follows: Substance Aluminum Asbestos Тетрerature 500°C k(W/m-K) 268.08 93°C 0.17 Rock Wool 51°C 0.05 954 W/m? b. 1085 W/m? 456 W/m? d. 1840 W/m? a. с.

Jun 10, 2022

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A composite three layered wall is formed of a 0.5 cm thick alunminum plate, a 0.25 cm thick layer of sheet asbestos, and a 2.0 cm thick layer of rock wool (density = 64 kg/m'); the asbestos is the...

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