An additional layer of air is introduced at the end of the combustion zone to ensure that the fuel is burned completely. This is referred to as?
A. Undergraduate Air
B. Underfire Air
C. Overfire Air
D. Tertiary Air
Answer: D
An additional layer of air is introduced at the end of the combustion zone to ensure that the fuel is burned completely. This is referred to as?
A. Undergraduate Air
B. Underfire Air
C. Overfire Air
D. Tertiary Air