Advantages of use of preheated combustion air are__________________?
Correct answer: D. All A., B. and C.
- A. Saving in fuel consumption
- B. Reduction in scale losses
- C. Increase in flame temperature
- D. All A., B. and C.
Explanation
Preheating combustion air recovers heat that would otherwise leave with the flue gas, thereby reducing fuel consumption, limiting scale formation and increasing flame temperature. Hence all three listed effects occur.
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