Furnace Technology Turndown ratio of a burner gives an idea of the __________ in the furnace. Minimum heat input rate only Range of fuel firing rates Volume of the combustion chamber Maximum heat input rate only Minimum heat input rate only Range of fuel firing rates Volume of the combustion chamber Maximum heat input rate only ANSWER DOWNLOAD EXAMIANS APP
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 Higher power consumption in its transportation Excessive fly ash discharge from the stack Ash disposal problem Erosion of induced draft fan blades Higher power consumption in its transportation Excessive fly ash discharge from the stack Ash disposal problem ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Specific heating capacity of a furnace is expressed as Weight heated/hr/furnace volume Weight heated/hr None of these Weight heated/furnace volume Weight heated/hr/furnace volume Weight heated/hr None of these Weight heated/furnace volume ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology In a furnace employing forced draught as compared to induced draught, The fan operates hot and hence blades are liable to corrosion and erosion Positive pressure exists in the furnace None of these 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 Positive pressure exists in the furnace None of these Air is sucked in, so air leaks are more and hence the furnace efficiency is reduced ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology In case of pulverised coal fired steam boiler, the secondary air serves the main purpose of Combustion of coal by supplying it around the burner Transportation of coal Preheating the primary air Drying of coal Combustion of coal by supplying it around the burner Transportation of coal Preheating the primary air Drying of coal ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Oxygen enrichment of combustion air does not result in increase of the Flame temperature Oxygen in the flue gas Stack loss Heat transfer rate in the furnace Flame temperature Oxygen in the flue gas Stack loss Heat transfer rate in the furnace ANSWER DOWNLOAD EXAMIANS APP
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