Furnace Technology Which of the following is the most important deterrants to an extended use of pulverised coal in boiler firing? Erosion of induced draft fan blades Excessive fly ash discharge from the stack Higher power consumption in its transportation Ash disposal problem Erosion of induced draft fan blades Excessive fly ash discharge from the stack Higher power consumption in its transportation Ash disposal problem ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Rate of heat release in a furnace, which is the measure of heat intensity is defined as Kcal/hr/m³ combustion space Kcal/m³ combustion space Kcal/hr None of these Kcal/hr/m³ combustion space Kcal/m³ combustion space Kcal/hr None of these ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology The electric furnace in which heat is produced by a combination of induced current and skin effect is called __________ furnace. Resistance Arc High frequency induction Low frequency induction Resistance Arc High frequency induction Low frequency induction ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Artificial draught produced by a fan in the furnace can be controlled by the Variation in the pitch of fan blades All of these Damper Speed of the fan Variation in the pitch of fan blades All of these Damper Speed of the fan 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 Use of non-preheated combustion air Use of excessive positive draft in the furnace Imperfect mixing of fuel & air and infiltration of air Use of pulverised solid fuels Use of non-preheated combustion air Use of excessive positive draft in the furnace Imperfect mixing of fuel & air and infiltration of air ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology The reason for excessive clinker formation in gas producers is the Use of coal/coke containing a high % of fines and ash Development of hot spots in the fuel bed and an abnormally high rate of gasification Use of fuel having too low an ash fusion temperature All of these Use of coal/coke containing a high % of fines and ash Development of hot spots in the fuel bed and an abnormally high rate of gasification Use of fuel having too low an ash fusion temperature All of these ANSWER DOWNLOAD EXAMIANS APP
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