Furnace oil consumption in a furnace for a given duty employing preheated combination air (at 300°) may be reduced by about ______________ percent as compared to the use of atmospheric combustion air? | MCQ Hive

Chemical Engineering Fuels and Combustion

Q Furnace oil consumption in a furnace for a given duty employing preheated combination air (at 300°) may be reduced by about ______________ percent as compared to the use of atmospheric combustion air?

A A. 5
B B. 10
C C. 20
D D. 35

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