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Furnace Technology

Furnace Technology
Which is not a hearth furnace?

Cupola
Reheating furnace
Open hearth furnace
Glass tank furnace

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Furnace Technology
Which of the following is the most important deterrants to an extended use of pulverised coal in boiler firing?

Higher power consumption in its transportation
Erosion of induced draft fan blades
Excessive fly ash discharge from the stack
Ash disposal problem

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Furnace Technology
Which of the following is not a recuperative furnace?

Coke oven
Soaking pit
Reheating furnace
Steamboiler

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Furnace Technology
Which of the following is not a continuous waste heat recovery equipment from the flue gases going out of furnace?

Ceramic recuperator
Regenerator
Economiser
Waste heat boiler

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Furnace Technology
Power required in case of forced draught as compared to induced draught (for the same draught produced) is

Less
Either more or less; depends on the flue gas density Answer: Option B
Same
More

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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
750
350

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