BOOK USED FOR THIS A furnace has the form of a truncated conical section shown b

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A furnace has the form of a truncated conical section shown below. The floor of the furnace has an emissivity of epsilon1 = 0.7 and is maintained with a heat flux of 2200W/m2. The lateral wall is perfectly insulated with an emissivity of epsilon3 = 0.3. Assume all surfaces are gray. Determine the temperature of the upper surface, T2, if its emissivity is epsilon2 = 0.5. Note: At an insulated surface, qi = 0. thus Ebi = Ji = Gi. In other words, heat going in also comes out. This is also known as a reradiating surface. Determine the temperature of the lateral surface T3.

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