In which of the waste heat recovery equipment, the flow of flue gas and air is alternately reversed after a fixed interval of time ?

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Question: In which of the waste heat recovery equipment, the flow of flue gas and air is alternately reversed after a fixed interval of time ?
[A].

Recuperator

[B].

Regenerator

[C].

Waste heat boiler

[D].

None of these

Answer: Option B

Explanation:

No answer description available for this question.