Ingress of cold air in the furnaces through cracks, charging doors, openings etc

Question

Ingress of cold air in the furnaces through cracks, charging doors, openings etc.

Options:

A . reduces the flue gas temperature and makes the furnace atmosphere oxidising.

B . increases the load on the induced draft fan.

C . reduces the furnace draught.

D . all (a), (b) and (c)

Answer: Option D
Answer: (d).all (a), (b) and (c)

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