Higher efficiency in the combustion of solid fuel cannot be achieved by________________?
Correct answer: D. Keeping the flue gas exhaust temperature very high
- A. Proper fuel preparation
- B. Supplying correct quantity of combustion air
- C. Adopting efficient-fuel firing technique & equipment
- D. Keeping the flue gas exhaust temperature very high
Explanation
Very hot exhaust gas carries a large amount of sensible heat out of the furnace, increasing stack heat loss. Efficient combustion instead requires suitable fuel preparation, firing, and the correct air supply.
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