In regenerative air preheater (as practised in heating of coke ovens), the heat is transferred_________________?
Correct answer: C. By heating an intermediate material (like chequor bricks) and then heating the air from this
- A. Through a metallic wall
- B. By direct contact of hot flue gas with air
- C. By heating an intermediate material (like chequor bricks) and then heating the air from this
- D. hot material
- E. None of these
Explanation
A regenerative air preheater first stores heat in a solid intermediate material such as chequer bricks. The incoming air then receives heat from the warmed bricks rather than through a continuously separating metallic wall.
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