The hot combustion gases of a furnace are separated from the ambient air and its surrounding which are at 25°C, by a brick wall 0.15 m thick. The brick has a thermal conductivity of 1.2 W/m-K and a surface emissivity of 0.80. Under steady state conditions and outer surface temperature of 100°C is measured. Free convection heat surface to the air adjoining this surface is characterized by a convection coefficient of 20 w/m2-K. What is the inner surface temperature in °C? Use the editor to format your answer

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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The hot combustion gases of a furnace are separated from the ambient air and its surrounding which are at 25°C, by a brick
wall 0.15 m thick. The brick has a thermal conductivity of 1.2 W/m-K and a surface emissivity of 0.80. Under steady state
conditions and outer surface temperature of 100°C is measured. Free convection heat surface to the air adjoining this surface is
characterized by a convection coefficient of 20 w/m2-K. What is the inner surface temperature in °C?
Use the editor to format your answer
Transcribed Image Text:The hot combustion gases of a furnace are separated from the ambient air and its surrounding which are at 25°C, by a brick wall 0.15 m thick. The brick has a thermal conductivity of 1.2 W/m-K and a surface emissivity of 0.80. Under steady state conditions and outer surface temperature of 100°C is measured. Free convection heat surface to the air adjoining this surface is characterized by a convection coefficient of 20 w/m2-K. What is the inner surface temperature in °C? Use the editor to format your answer
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