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.

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

5

20

40

60

5

20

40

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Furnace Technology
In a furnace, the heat taken by the charge/stock and the heat lost to the furnace structure & flue gases depends on the

Thermal conductivity of the charge & structural materials of furnace

Rate of firing and emissivity of flame

All of these

Nature of process ; whether batch, continuous or intermittant

Thermal conductivity of the charge & structural materials of furnace

Rate of firing and emissivity of flame

All of these

Nature of process ; whether batch, continuous or intermittant

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Furnace Technology
Which is a regenerative furnace?

Neither A nor B

Open hearth furnace

Coke oven heating chamber

Both A and B

Neither A nor B

Open hearth furnace

Coke oven heating chamber

Both A and B

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Furnace Technology
Which of the following is a directly fired intermittant furnace?

Tunnel kiln

Tower furnace

Walking beam reheating furnace

Reverberatory furnace

Tunnel kiln

Tower furnace

Walking beam reheating furnace

Reverberatory furnace

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Furnace Technology
Acid dew point temperature (ADT) of a flue gas produced by the combustion of a fuel containing 1% sulphur may be about __________ °C.

80

130

250

180

80

130

250

180

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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 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

Increase in calorific value of the fuel

Reduction in scale losses

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Furnace Technology

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.

Furnace Technology In a furnace, the heat taken by the charge/stock and the heat lost to the furnace structure & flue gases depends on the

Furnace Technology Which is a regenerative furnace?

Furnace Technology Which of the following is a directly fired intermittant furnace?

Furnace Technology Acid dew point temperature (ADT) of a flue gas produced by the combustion of a fuel containing 1% sulphur may be about __________ °C.

Furnace Technology Which of the following advantages is not associated with the use of preheated air for combustion of a fuel in the furnace?

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.

Furnace Technology
In a furnace, the heat taken by the charge/stock and the heat lost to the furnace structure & flue gases depends on the

Furnace Technology
Which is a regenerative furnace?

Furnace Technology
Which of the following is a directly fired intermittant furnace?

Furnace Technology
Acid dew point temperature (ADT) of a flue gas produced by the combustion of a fuel containing 1% sulphur may be about __________ °C.

Furnace Technology
Which of the following advantages is not associated with the use of preheated air for combustion of a fuel in the furnace?