Which of the following is not increased by using preheated combustion air in place of ordinary air at room temperature? Options: A . &nbspCalorific value of the fuel B . &nbspFlame temperature achieved C . &nbspSpeed of combustion of fuel D . &nbspHeat transfer rate to the stock in the furnace

Which of the following is not increased by using preheated combustion air in pla

Question

Which of the following is not increased by using preheated combustion air in place of ordinary air at room temperature?

Options:

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: Option A

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