Question

A Salt Bath Furnace provides heat transfer primarily by:

• A. Conduction
• B. Radiation
• C. Immersion (convection + conduction)
• D. Direct flame contact

Hint:

In salt bath furnaces, heat is transferred primarily through immersion in molten salt, which involves both convection (movement of salt) and conduction (heat transfer through direct contact).

Answer 1

The Correct Option is C

A Salt Bath Furnace is a type of furnace commonly used for heating materials to a uniform temperature. The furnace uses a molten salt as a medium for heat transfer. The heat is transferred primarily by the process of immersion, which involves both convection and conduction.
- Conduction refers to the transfer of heat through direct contact between the materials. While conduction does play a role, it is not the primary mode of heat transfer in a salt bath furnace.
- Radiation involves the transfer of heat via electromagnetic waves, but in the context of a salt bath furnace, this is not the dominant mechanism since the furnace relies more on direct contact between the material and the molten salt.
- Immersion (convection + conduction) is the correct answer. When materials are immersed in the molten salt, heat is transferred both by conduction from the salt to the material and by convection within the molten salt itself.
- Direct flame contact is not typically the primary mode of heat transfer in a salt bath furnace, as the heat is provided by the molten salt rather than direct contact with a flame.
Therefore, the primary mode of heat transfer in a salt bath furnace is immersion, which involves both convection and conduction.