_Which of the following is not increased by using preheated combustion – McqOptions

MCQOPTIONS

1.	_Which of the following is not increased by using preheated combustion air in place of ordinary air at room temperature?$?
A.	Calorific value of the fuel
B.	Flame temperature achieved
C.	Speed of combustion of fuel
D.	Heat transfer rate to the stock in the furnace
Answer» B. Flame temperature achieved

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