Furnace Technology Thermal efficiency of furnaces can be improved by Maintaining proper draught Minimising heat losses from furnace walls All of these Waste heat recovery from flue gas Maintaining proper draught Minimising heat losses from furnace walls All of these Waste heat recovery from flue gas ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology The advantages of firing pulverised coal in the furnace lies in the fact that, it Accelerates the burning rate and economises on fuel consumption Permits the use of low fusion point ash coal All of these Permits the use of high ash content coal Accelerates the burning rate and economises on fuel consumption Permits the use of low fusion point ash coal All of these Permits the use of high ash content coal ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Turn down ratio of a burner Should be 1:1 for a batch type furnace. Is normally much more for a continuous furnace as compared to a batch furnace Should be as low as possible i.e., 1 : 2 Is the ratio of maximum to minimum permissible heat input rates Should be 1:1 for a batch type furnace. Is normally much more for a continuous furnace as compared to a batch furnace Should be as low as possible i.e., 1 : 2 Is the ratio of maximum to minimum permissible heat input rates ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Ceramic recuperators compared to metallic recuperators for the same duty Are lighter Occupy more space Have higher pressure differential between flue gas & air side Are less costly Are lighter Occupy more space Have higher pressure differential between flue gas & air side Are less costly ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology The function of an economiser in a boiler is to preheat the Furnace oil Feedwater Combustion air Pulverised coal Furnace oil Feedwater Combustion air Pulverised coal ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology In furnaces operating at very high temperature (say) 1250°C, e.g. soaking pit), the maximum heat transfer takes place by Can not be predicted Conduction Radiation Convection Can not be predicted Conduction Radiation Convection ANSWER DOWNLOAD EXAMIANS APP
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