Furnace Technology In case of pulverised coal fired steam boiler, the secondary air serves the main purpose of Preheating the primary air Combustion of coal by supplying it around the burner Transportation of coal Drying of coal Preheating the primary air Combustion of coal by supplying it around the burner Transportation of coal Drying of coal ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Which of the following is a directly fired intermittant furnace? Tunnel kiln Walking beam reheating furnace Reverberatory furnace Tower furnace Tunnel kiln Walking beam reheating furnace Reverberatory furnace Tower furnace ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Furnace pressure is normally controlled by regulating the Damper Speed of I.D. fan Air pressure Fuel gas pressure Damper Speed of I.D. fan Air pressure Fuel gas pressure ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Thermal efficiency of an open hearth furnace may be about __________ percent. 5 80 20 50 5 80 20 50 ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Overall thermal efficiency of a lumpy coal fired suitably designed heating furnace, if operated & maintained properly may be about __________ percent. 44119 65-70 45-50 25-30 44119 65-70 45-50 25-30 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
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