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2) Ceiling outer surface temperature of an oven is 60̊C. The furnace is located in an...

2) Ceiling outer surface temperature of an oven is 60̊C. The furnace is located in an environment of 20 ̊C, and if the width of the ceiling is 1m in length and 2 m, find the heat loss from the ceiling surface of the furnace.
NOTE: Use the physical properties of the air at 40oC for the medium.

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