Too much of excess air in combustion results in high
(A) Fuel consumption for the same heat load
(B) Stack gas temperature
(C) Percentage of oxygen in flue gases
(D) All (A), (B) and (C)
(A) Fuel consumption for the same heat load
(B) Stack gas temperature
(C) Percentage of oxygen in flue gases
(D) All (A), (B) and (C)