Furnace Technology Which of the following variables does not affect the furnace capacity? Gas velocity in furnace Size of the furnace Ratio of wall surface to surface of stock None of these Gas velocity in furnace Size of the furnace Ratio of wall surface to surface of stock None of these ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology The thermal efficiency of an air/fuel gas preheating recuperator may be as high as __________ percent. 65 50 85 99 65 50 85 99 ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Amount of coal lost in ash particle, which is carried through the boiler system, depends upon the Amount of excess air supplied and load on the boiler All of these Type of burner and combustion chamber Physical nature, ash content and fineness of the coal Amount of excess air supplied and load on the boiler All of these Type of burner and combustion chamber Physical nature, ash content and fineness of the coal ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Which furnace employs natural draft? Rotary kilns Boiler L.D. converter Coke oven Rotary kilns Boiler L.D. converter Coke oven ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Ceramic recuperators compared to metallic recuperators for the same duty Are lighter Occupy more space Are less costly Have higher pressure differential between flue gas & air side Are lighter Occupy more space Are less costly Have higher pressure differential between flue gas & air side ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Turn down ratio of a burner Should be 1:1 for a batch type furnace. Is the ratio of maximum to minimum permissible heat input rates Should be as low as possible i.e., 1 : 2 Is normally much more for a continuous furnace as compared to a batch furnace Should be 1:1 for a batch type furnace. Is the ratio of maximum to minimum permissible heat input rates Should be as low as possible i.e., 1 : 2 Is normally much more for a continuous furnace as compared to a batch furnace ANSWER DOWNLOAD EXAMIANS APP
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