Furnace Technology Temperature of a furnace fired with low calorific value fuel gas (i.e. lean gas) can be increased by Preheating the combustion air All of these Oxygen enrichment of combustion air Preheating the fuel gas Preheating the combustion air All of these Oxygen enrichment of combustion air Preheating the fuel gas ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Which of the following advantages is not associated with the use of preheated air for combustion of a fuel in the furnace? Increase in calorific value of the fuel Reduction in scale losses Increase in flame temperature Saving in fuel consumption Increase in calorific value of the fuel Reduction in scale losses Increase in flame temperature Saving in fuel consumption ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology The thermal efficiency of an air/fuel gas preheating recuperator may be as high as __________ percent. 50 65 99 85 50 65 99 85 ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Turndown ratio of a burner gives an idea of the __________ in the furnace. 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 Minimum heat input rate only Range of fuel firing rates ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Metallic recuperators are not used for waste heat recovery, if the hot flue gas temperature is above __________ °C, because corrosion prevails at higher temperatures. 1250 1050 350 750 1250 1050 350 750 ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Which furnace employs natural draft? Coke oven Boiler L.D. converter Rotary kilns Coke oven Boiler L.D. converter Rotary kilns ANSWER DOWNLOAD EXAMIANS APP
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