Furnace Technology Turndown ratio of a burner gives an idea of the __________ in the furnace. Volume of the combustion chamber Range of fuel firing rates Minimum heat input rate only Maximum heat input rate only Volume of the combustion chamber Range of fuel firing rates Minimum heat input rate only Maximum heat input rate only ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology In practical operation of any furnace, zero oxygen percentage or theoretical CO₂ percentage in flue gas is rarely achieved, because of Use of pulverised solid fuels Imperfect mixing of fuel & air and infiltration of air Use of non-preheated combustion air Use of excessive positive draft in the furnace Use of pulverised solid fuels Imperfect mixing of fuel & air and infiltration of air Use of non-preheated combustion air Use of excessive positive draft in the furnace ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology In a furnace employing forced draught as compared to induced draught, Positive pressure exists in the furnace Air is sucked in, so air leaks are more and hence the furnace efficiency is reduced The fan operates hot and hence blades are liable to corrosion and erosion None of these Positive pressure exists in the furnace Air is sucked in, so air leaks are more and hence the furnace efficiency is reduced The fan operates hot and hence blades are liable to corrosion and erosion None of these ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Which is not a hearth furnace? Glass tank furnace Cupola Reheating furnace Open hearth furnace Glass tank furnace Cupola Reheating furnace Open hearth furnace ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology In which of the waste heat recovery equipment, the flow of flue gas and air is alternately reversed after a fixed interval of time? Waste heat boiler Recuperator None of these Regenerator Waste heat boiler Recuperator None of these Regenerator ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology If the flame is produced under the hearth and then sweeps up into the heating chamber, this is called a/an __________ furnace. Underfired Sidefired Covered Recirculating Underfired Sidefired Covered Recirculating ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS