Furnace Technology
Heat transfer takes place through a liquid medium surrounding the submerged material under heating, in case of a/an

Steam boiler
Blast furnace
Annealing furnace
Salt bath furnace

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Furnace Technology
Recuperator is

An intermittant waste heat recovery equipment
Heavier than regenerator meant for the same duty
Not used for fuel gas preheating
A continuous waste heat recovery equipment

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