Fuels and Combustion The optimum percentage of excess air for combustion depends upon the __________ of the fuel. Type (solid, liquid or gaseous) Sulphur content Ignition temperature Calorific value Type (solid, liquid or gaseous) Sulphur content Ignition temperature Calorific value ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Percentage of nitrogen in blast furnace gas may be around 5 80 55 25 5 80 55 25 ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Cannel coal Is non-coking Is a non-banded coal which can be ignited easily with a match stick or candle flame, hence is so named Has a high volatile matter content and burns with a luminous smoky flame All of these Is non-coking Is a non-banded coal which can be ignited easily with a match stick or candle flame, hence is so named Has a high volatile matter content and burns with a luminous smoky flame All of these ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion (64-132) rank coal (ASTM) means a coal with 64% Fixed carbon and a heating value of 132 BTU/1b None of these Fixed carbon and having a heat value of 13, 200 BTU/1b Ash and a heating value of 13, 200 BTU/1b Fixed carbon and a heating value of 132 BTU/1b None of these Fixed carbon and having a heat value of 13, 200 BTU/1b Ash and a heating value of 13, 200 BTU/1b ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion A coal containing high amount of volatile matter will have Low adiabatic flame temperature Low ignition temperature Very little ash content High fusion point of its ash Low adiabatic flame temperature Low ignition temperature Very little ash content High fusion point of its ash ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion As time passes, the calorific value of stored coal Remains unaltered May increase or decrease (depends on the method of storage) Increases Decreases Remains unaltered May increase or decrease (depends on the method of storage) Increases Decreases ANSWER DOWNLOAD EXAMIANS APP
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