If oxygen content in the flue gas rises too high, fuel is being wasted by _______________?
Correct answer: A. Dry gas/stack gas loss
- A. Dry gas/stack gas loss
- B. Incomplete combustion
- C. Moisture loss
- D. None of these
Explanation
Excess oxygen in flue gas indicates excess air, which increases the mass of dry gas leaving the stack and hence the dry-gas or stack-gas heat loss. It does not primarily indicate incomplete combustion.
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