A composite wall is formed of a 2.5 cm copper plate (k-386 W/m.C) with inner surface...

 

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A composite wall is formed of a 2.5 cm copper plate (k-386 W/m.°C) with inner surface temperature of 700 °C, a 0.32 cm layer of asbestos (k-0.16 W/m.°C), and a 5 cm layer of fiberglass (k-0.038 W/m.°C). The composite wall is exposed to air having a convective heat transfer coefficient of 9.37 W/m².°C. If the heat flow per unit area through the composite structure is 0.4 kW/ m² calculate the temperature of surrounded air. A composite wall is formed of a 2.5 cm copper plate (k-386 W/m.°C) with inner surface temperature of 700 °C, a 0.32 cm layer of asbestos (k-0.16 W/m.°C), and a 5 cm layer of fiberglass (k-0.038 W/m.°C). The composite wall is exposed to air having a convective heat transfer coefficient of 9.37 W/m².°C. If the heat flow per unit area through the composite structure is 0.4 kW/ m² calculate the temperature of surrounded air.

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To calculate the temperature of the surrounding air we can use the concept of thermal resistance The ... View the full answer