If heat transfer rate varies with the time, it is termed as

Heat Transfer
If heat transfer rate varies with the time, it is termed as

None of these

Steady state conduction

Monochromatic radiation

Forced convection

None of these

Steady state conduction

Monochromatic radiation

Forced convection

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Heat Transfer
The critical radius of insulation for cylindrical pipe is (where, hi = heat transfer coefficient at inside of the pipe )

hi/K

K/h0

2K/h0

2hi/K

hi/K

K/h0

2K/h0

2hi/K

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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?

Viscosity

Density

Pressure

Corrosiveness & fouling characteristics

Viscosity

Density

Pressure

Corrosiveness & fouling characteristics

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

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

All of these

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

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

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

All of these

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

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

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Heat Transfer
Heat exchangers operating, when the asymptotic range is reached,

Results in making part of the heating surface inactive

None of these

Results in abruptly increased velocity

Provide very large heat transfer co-efficient

Results in making part of the heating surface inactive

None of these

Results in abruptly increased velocity

Provide very large heat transfer co-efficient

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Heat Transfer
Heat waves

Can not pass through vacuum

Can be reflected by a mirror

Travel in straight line

Both B and C

Can not pass through vacuum

Can be reflected by a mirror

Travel in straight line

Both B and C

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Heat Transfer

Heat Transfer If heat transfer rate varies with the time, it is termed as

Heat Transfer The critical radius of insulation for cylindrical pipe is (where, hi = heat transfer coefficient at inside of the pipe )

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

Heat Transfer Heat exchangers operating, when the asymptotic range is reached,

Heat Transfer Heat waves

Heat Transfer
If heat transfer rate varies with the time, it is termed as

Heat Transfer
The critical radius of insulation for cylindrical pipe is (where, hi = heat transfer coefficient at inside of the pipe )

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

Heat Transfer
Heat exchangers operating, when the asymptotic range is reached,

Heat Transfer
Heat waves