In a recuperative air preheater, the heat is transferred___________________

Question

In a recuperative air preheater, the heat is transferred____________________?

Options:

A . from a metal wall from one medium to another

B . from heating an itermediate material and then heating the air from this material

C . by direct mixing

D . heat is transferred by bleeding some gases from furnace

E . none of the above

Answer: Option A
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

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