Combustion of furnace oil in a furnace (soaking pit) with preheated combustion air at 400°C results in saving of about __________ percent furnace oil as compared to its combustion with atmospheric air, if the flue gas outlet temperature from the soaking pit is 1200°C.
A. 5
B. 60
C. 20
D. 40
Answer: Option C
This Question Belongs to Chemical Engineering >> Furnace Technology
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