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 1250 750 350 1050 1250 750 350 ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology Overall thermal efficiency of a lumpy coal fired suitably designed heating furnace, if operated & maintained properly may be about __________ percent. 45-50 25-30 44119 65-70 45-50 25-30 44119 65-70 ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology The advantages of firing pulverised coal in the furnace lies in the fact that, it All of these Accelerates the burning rate and economises on fuel consumption Permits the use of high ash content coal Permits the use of low fusion point ash coal All of these Accelerates the burning rate and economises on fuel consumption Permits the use of high ash content coal Permits the use of low fusion point ash coal 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 Preheating the primary air Drying of coal Transportation of coal Combustion of coal by supplying it around the burner Preheating the primary air Drying of coal Transportation of coal ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology The purpose of controlling the furnace atmosphere is to prevent surface attack by Oxidation/scaling Decarburising Either of the above Sulphur penetration Oxidation/scaling Decarburising Either of the above Sulphur penetration ANSWER DOWNLOAD EXAMIANS APP
Furnace Technology A refractory wall separating the stock and the source of heat is provided in a None of these Updraft kiln Muffle furnace Continuous furnace None of these Updraft kiln Muffle furnace Continuous furnace ANSWER DOWNLOAD EXAMIANS APP
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