Use of excess of combustion air in the combustion of fuels results in__________________?
Correct answer: D. Heat losses
- A. None of these
- B. Long flame
- C. Condensation of water vapour from the fuel gas
- D. Heat losses
Explanation
Excess air carries additional nitrogen and unused oxygen out with the flue gas, increasing sensible heat loss through the stack. It does not represent useful combustion heat recovery.
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