Furnace Technology Heat transfer takes place through a liquid medium surrounding the submerged material under heating, in case of a/an Steam boiler Blast furnace Annealing furnace Salt bath furnace Steam boiler Blast furnace Annealing furnace Salt bath furnace ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Use of pulverised coal in boilers provides Higher calorific value Better combustion Smokeless burning Less erosion on furnace wall Higher calorific value Better combustion Smokeless burning Less erosion on furnace wall ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Turn down ratio of a burner Should be as low as possible i.e., 1 : 2 Is normally much more for a continuous furnace as compared to a batch furnace Is the ratio of maximum to minimum permissible heat input rates Should be 1:1 for a batch type furnace. Should be as low as possible i.e., 1 : 2 Is normally much more for a continuous furnace as compared to a batch furnace Is the ratio of maximum to minimum permissible heat input rates Should be 1:1 for a batch type furnace. ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Turndown ratio of a burner gives an idea of the __________ in the furnace. Volume of the combustion chamber Minimum heat input rate only Maximum heat input rate only Range of fuel firing rates Volume of the combustion chamber Minimum heat input rate only Maximum heat input rate only Range of fuel firing rates ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Artificial draught produced by a fan in the furnace can be controlled by the Speed of the fan All of these Variation in the pitch of fan blades Damper Speed of the fan All of these Variation in the pitch of fan blades Damper ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology The reason for excessive clinker formation in gas producers is the Development of hot spots in the fuel bed and an abnormally high rate of gasification Use of coal/coke containing a high % of fines and ash Use of fuel having too low an ash fusion temperature All of these Development of hot spots in the fuel bed and an abnormally high rate of gasification Use of coal/coke containing a high % of fines and ash Use of fuel having too low an ash fusion temperature All of these ANSWER DOWNLOAD EXAMIANS APP
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