Furnace Technology Temperature of a furnace fired with low calorific value fuel gas (i.e. lean gas) can be increased by Preheating the fuel gas All of these Preheating the combustion air Oxygen enrichment of combustion air Preheating the fuel gas All of these Preheating the combustion air Oxygen enrichment of combustion air ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology An example of shaft furnace is the Blast furnace Glass melting tank Soaking pit L.D. converter Blast furnace Glass melting tank Soaking pit L.D. converter ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Ceramic coating material for furnace refractory, which increases its emissivity and thus the radiation heat transfer rate in the furnace, comprises of Zircon powder Thoria Graphite powder Beryllium Zircon powder Thoria Graphite powder Beryllium ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Presence of SO₂ in furnace gases attacks the ferrous metal by way of Accelerating the rate of scaling All of these Attacking the grain boundaries; particularly severe on low carbon and nickel bearing steels at high temperature Causing metal embrittlement Accelerating the rate of scaling All of these Attacking the grain boundaries; particularly severe on low carbon and nickel bearing steels at high temperature Causing metal embrittlement ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology In furnaces operating at very high temperature (say) 1250°C, e.g. soaking pit), the maximum heat transfer takes place by Can not be predicted Radiation Conduction Convection Can not be predicted Radiation Conduction Convection ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Use of pulverised coal in boilers provides Better combustion Higher calorific value Smokeless burning Less erosion on furnace wall Better combustion Higher calorific value Smokeless burning Less erosion on furnace wall ANSWER DOWNLOAD EXAMIANS APP
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