Combustion of pulverised coal as compared to that of lump coal ________________?
Correct answer: C. Can be done with less excess air
- A. Develops a non-luminous flame
- B. Develops a low temperature flame
- C. Can be done with less excess air
- D. Provides a lower rate of heat release
Explanation
Pulverising coal greatly increases its surface area, allowing faster and more complete combustion with better air-fuel mixing. Consequently, pulverised-coal firing can operate with less excess air than lump-coal firing.
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