When incomplete combustion loss is high, the flue gas analysis shows large amount of (A) CO2 (B) CO (C) O2 (D) C

When incomplete combustion loss is high, the flue gas analysis shows
large amount of
(A) CO2
(B) CO
(C) O2
(D) C
by

1 Answer

Answer :

(B) CO
by

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In practical operation of any furnace, zero oxygen percentage or theoretical CO2 percentage in flue gas is rarely achieved, because of (A) Use of non-preheated combustion air (B) Use of pulverised solid fuels (C) Imperfect mixing of fuel & air and infiltration of air (D) Use of excessive positive draft in the furnace

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Orsat apparatus(A) Gives flue gas analysis on dry basis (B) Determines N2 in flue gas indirectly (C) Can’t determine CO in flue gas, if it is < 0.2% (D) All (A), (B) & (C)

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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)

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