Combustion of furnace oil in a furnace (soaking pit) with preheated co – McqOptions

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1.	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
A.	60
B.	5
C.	40
D.	20
Answer» E.

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