Furnace Technology Overall thermal efficiency of a lumpy coal fired suitably designed heating furnace, if operated & maintained properly may be about __________ percent. 65-70 44119 45-50 25-30 65-70 44119 45-50 25-30 ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Rate of heat release in a furnace, which is the measure of heat intensity is defined as Kcal/m³ combustion space None of these Kcal/hr/m³ combustion space Kcal/hr Kcal/m³ combustion space None of these Kcal/hr/m³ combustion space Kcal/hr 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 Convection Conduction Can not be predicted Radiation Convection Conduction Can not be predicted Radiation ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Thermal efficiency of an open hearth furnace may be about __________ percent. 5 20 50 80 5 20 50 80 ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Regenerators compared to the recuperators for the same duty Occupy more space Are less costly Are of smaller size All of these Occupy more space Are less costly Are of smaller size All of these ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology In a furnace employing forced draught as compared to induced draught, None of these Air is sucked in, so air leaks are more and hence the furnace efficiency is reduced Positive pressure exists in the furnace The fan operates hot and hence blades are liable to corrosion and erosion None of these Air is sucked in, so air leaks are more and hence the furnace efficiency is reduced Positive pressure exists in the furnace The fan operates hot and hence blades are liable to corrosion and erosion ANSWER DOWNLOAD EXAMIANS APP
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