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

Recuperator
None of these
Regenerator
Waste heat boiler

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Furnace Technology
In a furnace employing forced draught as compared to induced draught,

Positive pressure exists in the furnace
The fan operates hot and hence blades are liable to corrosion and erosion
Air is sucked in, so air leaks are more and hence the furnace efficiency is reduced
None of these

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