Fuels and Combustion Preheating of a gaseous fuel results in increased Flame temperature Flame length Ignition temperature Quantity of flue gas Flame temperature Flame length Ignition temperature Quantity of flue gas ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Mineral matter content (M) and ash content (A) in coal are approximately related as M = A M = 1.1A M = 1.5A M = 2A M = A M = 1.1A M = 1.5A M = 2A ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion A gaseous fuel in order to develop luminousity on burning, must contain Carbon monoxide Hydrogen Hydrocarbons Oxygen Carbon monoxide Hydrogen Hydrocarbons Oxygen ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Height of coke oven is limited (say maximum upto 7 metres) mainly by the Structural strength of silica bricks Buckling of ram of pusher car at the time of coke pushing Problem in door cleaning Problem of uniform heating along its height Structural strength of silica bricks Buckling of ram of pusher car at the time of coke pushing Problem in door cleaning Problem of uniform heating along its height ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Fuel gases containing hydrocarbons (ie.g. coke oven gas) are not preheated before burning, mainly because It reduces its calorific value tremendously There are chances of explosion during preheating The hydrocarbons crack thereby choking and fouling the heat transfer surface by carbon soot It reduces its flame temperature tremendously It reduces its calorific value tremendously There are chances of explosion during preheating The hydrocarbons crack thereby choking and fouling the heat transfer surface by carbon soot It reduces its flame temperature tremendously ANSWER DOWNLOAD EXAMIANS APP
Fuels and Combustion Coking time in beehive coke oven is about 2-3 days 12 hours One week Two weeks 2-3 days 12 hours One week Two weeks ANSWER DOWNLOAD EXAMIANS APP
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