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Heat transfer in furnaces takes place only through the convection mode of heat transfer.

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+1 vote
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in Casting-Forming-Welding II by (119k points)
Heat transfer in furnaces takes place only through the convection mode of heat transfer.

(a) True

(b) False

This question was addressed to me in exam.

The doubt is from Selection of Remelting Furnace topic in chapter Metal Furnace and Practice of Casting-Forming-Welding II

1 Answer

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Best answer
Right choice is (b) False

The best explanation: In furnaces, heat is transferred to the metal or stock by both the radiation and convection mode of heat transfer. Radiation mainly occurs from the flame, the furnace walls, roof and hot combustion products. And convection occurs due to the movement of hot gases over the metal surface. But at the high temperatures, the radiation mode of heat transfer is dominant in the furnaces.

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