High excess air in combustion of fuels results in____________________?
Correct answer: A. Increased fuel consumption
- A. Increased fuel consumption
- B. Incomplete combustion
- C. Smoky flame
- D. None of these
Explanation
Excess air dilutes the flame and carries additional nitrogen and unused oxygen through the stack, increasing stack heat loss. More fuel is therefore required to supply the same useful heat, even though excess air normally reduces incomplete combustion and smoke.
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