Higher furnace temperature cannot be achieved by use of a lean fuel gas in the furnace by_________________?
(A) Increasing the draft in the furnace
(B) Preheating the fuel gas
(C) Oxygen enrichment of combustion air
(D) Preheating the combustion air
Higher furnace temperature cannot be achieved by use of a lean fuel gas in the furnace by_________________?
(A) Increasing the draft in the furnace
(B) Preheating the fuel gas
(C) Oxygen enrichment of combustion air
(D) Preheating the combustion air
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