Furnace Technology The thermal efficiency of a steel slab reheating furnace (walking beam type) may be about __________ percent. 40 70 15 85 40 70 15 85 ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Reverberatory furnace is used for Heating air Roasting/reduction of ores Annealing steel coil Steel melting Heating air Roasting/reduction of ores Annealing steel coil Steel melting ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Ceramic recuperators compared to metallic recuperators for the same duty Have higher pressure differential between flue gas & air side Occupy more space Are less costly Are lighter Have higher pressure differential between flue gas & air side Occupy more space Are less costly Are lighter ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology In a furnace, the heat taken by the charge/stock and the heat lost to the furnace structure & flue gases depends on the All of these Thermal conductivity of the charge & structural materials of furnace Rate of firing and emissivity of flame Nature of process ; whether batch, continuous or intermittant All of these Thermal conductivity of the charge & structural materials of furnace Rate of firing and emissivity of flame Nature of process ; whether batch, continuous or intermittant ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Presence of SO₂ in furnace gases attacks the ferrous metal by way of Causing metal embrittlement Attacking the grain boundaries; particularly severe on low carbon and nickel bearing steels at high temperature Accelerating the rate of scaling All of these Causing metal embrittlement Attacking the grain boundaries; particularly severe on low carbon and nickel bearing steels at high temperature Accelerating the rate of scaling All of these ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Artificial draught produced by a fan in the furnace can be controlled by the Damper Variation in the pitch of fan blades All of these Speed of the fan Damper Variation in the pitch of fan blades All of these Speed of the fan ANSWER DOWNLOAD EXAMIANS APP
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