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. 1050 350 750 1250 1050 350 750 1250 ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Combustion of furnace oil in a furnace (soaking pit) with preheated combustion air at 400°C results in saving of about __________ percent furnace oil as compared to its combustion with atmospheric air, if the flue gas outlet temperature from the soaking pit is 1200°C. 60 20 5 40 60 20 5 40 ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology An example of shaft furnace is the Blast furnace Glass melting tank L.D. converter Soaking pit Blast furnace Glass melting tank L.D. converter Soaking pit ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Circulation of gases in furnace is caused by the Change in volume during a change of temperature All of these Difference in density between hot and cold gases Furnace pressure in conjunction with draft in flues Change in volume during a change of temperature All of these Difference in density between hot and cold gases Furnace pressure in conjunction with draft in flues ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology If the flame is produced under the hearth and then sweeps up into the heating chamber, this is called a/an __________ furnace. Covered Underfired Recirculating Sidefired Covered Underfired Recirculating Sidefired ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology In order to maintain an oxidising atmosphere in a furnace, it should have More of CO₂ in flue gas Less of excess air More of excess air More of CO in flue gas More of CO₂ in flue gas Less of excess air More of excess air More of CO in flue gas ANSWER DOWNLOAD EXAMIANS APP
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