Maximum heat transfer in high temperature furnaces is by____________________?
Correct answer: C. Radiation
- A. Conduction
- B. Convection
- C. Radiation
- D. Either A., B. or C.; depends on the type of furnace
Explanation
At the very high temperatures found in furnaces, heat transfer by thermal radiation increases sharply with temperature and generally dominates conduction and convection. This is why furnace walls and charges are designed with radiation exchange in mind.
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