Furnace Technology
Which of the following is a directly fired intermittant furnace?

Reverberatory furnace
Walking beam reheating furnace
Tower furnace
Tunnel kiln

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Furnace Technology
Recuperator is

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

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Furnace Technology
The amount of combustible escaping uncon-sumed from the furnace, depends upon the

Air supplied and furnace temperature
All of these
Air preheat and the flow of gases in the furnace (mixing by induction, by acceleration or by change of direction)
Burner design (thoroughness of mixing versus stratification)

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