Which of the following is not used as a medium for high temperature heating ?

Heat Transfer
Which of the following is not used as a medium for high temperature heating ?

dowtherm

None of the listed here

liquid metal

mercury

dowtherm

None of the listed here

liquid metal

mercury

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Heat Transfer
For concentrating an aqueous solution of a material like anhydrous Na₂SO₄, whose solubility decreases with rise in temperature, the most suitable evaporator is a __________ evaporator.

None of these

Vacuum

Backward feed

High pressure

None of these

Vacuum

Backward feed

High pressure

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Heat Transfer
Film boiling is usually not desired in commercial equipments, because

the heat transfer rate is low in view of the large temperature drop. @

it is difficult to maintain

none of the listed here

it is not economic

the heat transfer rate is low in view of the large temperature drop. @

it is difficult to maintain

none of the listed here

it is not economic

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Heat Transfer
Stefen's block body radiation law can also be derived from __________ law.

Fourier's

Planck's

Kirchoffs

None of these

Fourier's

Planck's

Kirchoffs

None of these

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Heat Transfer
In a gas-liquid shell and tube heat exchanger, the

Gases to be heated/cooled is normally routed through the shell side, because the corrosion caused by the cooling water or steam condensate remain localised to the tubes

All of these

Gases under high pressure are routed through the tube side, because high pressure gases are corrosive in nature

Presence of a non-condensible gas decreases the condensing film co-efficient

Gases to be heated/cooled is normally routed through the shell side, because the corrosion caused by the cooling water or steam condensate remain localised to the tubes

All of these

Gases under high pressure are routed through the tube side, because high pressure gases are corrosive in nature

Presence of a non-condensible gas decreases the condensing film co-efficient

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Heat Transfer
Which of the following parameters of the fluid is not very important, while deciding its route in a shell and tube heat exchanger?

Density

Pressure

Viscosity

Corrosiveness & fouling characteristics

Density

Pressure

Viscosity

Corrosiveness & fouling characteristics

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Heat Transfer

Heat Transfer Which of the following is not used as a medium for high temperature heating ?

Heat Transfer For concentrating an aqueous solution of a material like anhydrous Na₂SO₄, whose solubility decreases with rise in temperature, the most suitable evaporator is a __________ evaporator.

Heat Transfer Film boiling is usually not desired in commercial equipments, because

Heat Transfer Stefen's block body radiation law can also be derived from __________ law.

Heat Transfer In a gas-liquid shell and tube heat exchanger, the

Heat Transfer Which of the following parameters of the fluid is not very important, while deciding its route in a shell and tube heat exchanger?

Heat Transfer
Which of the following is not used as a medium for high temperature heating ?

Heat Transfer
For concentrating an aqueous solution of a material like anhydrous Na₂SO₄, whose solubility decreases with rise in temperature, the most suitable evaporator is a __________ evaporator.

Heat Transfer
Film boiling is usually not desired in commercial equipments, because

Heat Transfer
Stefen's block body radiation law can also be derived from __________ law.

Heat Transfer
In a gas-liquid shell and tube heat exchanger, the

Heat Transfer
Which of the following parameters of the fluid is not very important, while deciding its route in a shell and tube heat exchanger?