If the oxygen concentration of flue gas is too low
A.the amount of excess air should be decreased
B.the amount of excess air should be increased
C.the amount of excess air should be kept constant
D.there is dry-gas or stack loss
A.the amount of excess air should be decreased
B.the amount of excess air should be increased
C.the amount of excess air should be kept constant
D.there is dry-gas or stack loss
A.incomplete combustion loss
B.dry gas loss or stack loss
C.moisture loss unaccountable loss
D.all these answers
A.CO2
B.air
C.SO2
D.H2O
A.decreases with increase in molecular weight
B.increases with increase in molecular weight
C.remains constant with change in molecular weight
D.is always negative
A.solids
B.gases
C.liquids
D.all of the above
A.the heat directly released by combustion
B.the heat released by cooling down all combustion products to the temperature before combustion
C.the latent heat of condensation of the water formed
D.all of these answers
A.equal to the gross heat of combustion of the hydrocarbon fuels
B.greater than the gross heat of combustion of the hydrocarbon fuels
C.equal to the gross heat of combustion minus the latent heat of condensation of the water formed during the combustion reaction
D.equal to the latent heat of condensation of the water formed during the combustion reaction.
A.Hydrogen
B.Methane
C.Ethane
D.Butane
A.hydrogen
B.LPG
C.Natural gas
D.carbon