Fuels and Combustion The main drawback of supplying more excess air in the combustion of fuel is the High exit flue gas temperature from the furnace Enhanced sensible heat loss in the flue gas Excessive power requirement of air blower Intermittant and uncontrolled combustion of the fuel High exit flue gas temperature from the furnace Enhanced sensible heat loss in the flue gas Excessive power requirement of air blower Intermittant and uncontrolled combustion of the fuel ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Junker's calorimeter is used to determine the calorific value of Pulverised coal Fuel oil None of these Gaseous fuels Pulverised coal Fuel oil None of these Gaseous fuels ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion A coal containing high amount of volatile matter will have High fusion point of its ash Low ignition temperature Very little ash content Low adiabatic flame temperature High fusion point of its ash Low ignition temperature Very little ash content Low adiabatic flame temperature ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion The maximum percentage of CO₂ in a flue gas (from a carbonaceous fuel) can be 29 79 77 21 29 79 77 21 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Producer gas containing least amount of tar is produced by the Partial combustion of coal High pressure gasification of coal (e.g. in Lurgi gasifier) Partial combustion of large size (< 50 mm) coke Atmospheric pressure gasification of coal (e.g., in Kopper-Totzek gasifier) Partial combustion of coal High pressure gasification of coal (e.g. in Lurgi gasifier) Partial combustion of large size (< 50 mm) coke Atmospheric pressure gasification of coal (e.g., in Kopper-Totzek gasifier) ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Function of secondary air in pulverised coal firing is to Dry the coal Reduce primary air requirement Ensure efficient burning of coal around the burner Transport the coal to the burner Dry the coal Reduce primary air requirement Ensure efficient burning of coal around the burner Transport the coal to the burner ANSWER DOWNLOAD EXAMIANS APP
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