Chemical Engineering - Fuels and Combustion - Discussion

Discussion Forum : Fuels and Combustion - Section 3 (Q.No. 7)
7.
Oxygen content in a flue gas was found to be 4%. It implies that excess air used for combustion was around __________ percent.
4
96
20
40
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
2 comments Page 1 of 1.

Sourav said:   7 years ago
The Air contains oxygen and nitrogen mainly.nitrogen percentage is 3.79 times of oxygen. So the excess air is,

{ 4+(4*3.79)}.
= 20 approx).
(2)

Dushyant said:   1 decade ago
Why?

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