Types of preheater.

Question

Types of preheater.

Accepted Answer

Preheaters are devices used to heat a substance or material before a process or operation.

Types of preheaters include direct-fired preheaters, indirect-fired preheaters, regenerative preheaters, and recuperative preheaters.
Direct-fired preheaters directly heat the substance using a flame or burner.
Indirect-fired preheaters heat the substance indirectly through a heat transfer medium.
Regenerative preheaters use a rotating heat storage medium to transfer heat between the incoming and outgoing substances.
Recuperative preheaters use a heat exchanger to transfer heat between the incoming and outgoing substances.
Examples of preheaters include air preheaters, water preheaters, and fuel preheaters.

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