The Sieder-Tate correlation for heat transfer in turbulent flow in pipe gives Nu α Re0.8, where, Nu is the Nusselt number and Re is the Reynolds number for the flow. Assuming that this relation is valid, the heat transfer co-efficient varies with the pipe diameter (D) as

Heat Transfer
The Sieder-Tate correlation for heat transfer in turbulent flow in pipe gives Nu α Re0.8, where, Nu is the Nusselt number and Re is the Reynolds number for the flow. Assuming that this relation is valid, the heat transfer co-efficient varies with the pipe diameter (D) as

(D)-0.2

(D)1.8

(D)0.2

(D)-1.8

(D)-0.2

(D)1.8

(D)0.2

(D)-1.8

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Heat Transfer
The ratio of total radiating power to the absorptivity of the body depends upon the __________ as per Kirchoffs law.

None of these

Temperature of the body

Wavelength of radiation

Nature of the body

None of these

Temperature of the body

Wavelength of radiation

Nature of the body

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Heat Transfer
A metal wire of 0.01 m dia and thermal conductivity 200 W/m.K is exposed to a fluid stream with a convective heat transfer coefficient of 100 W/m².K. The Biot number is

0.025

5.6

0.0035

3.5

0.025

5.6

0.0035

3.5

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

None of these

Results in making part of the heating surface inactive

Results in abruptly increased velocity

Provide very large heat transfer co-efficient

None of these

Results in making part of the heating surface inactive

Results in abruptly increased velocity

Provide very large heat transfer co-efficient

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Heat Transfer
In sub-cooled boiling,

Bubbles from heating surface are absorbed by the mass of the liquid

Very large vapour space is necessary

Temperature of the heating surface is more than the boiling point of the liquid

Temperature of the heating surface is less than the boiling point of the liquid

Bubbles from heating surface are absorbed by the mass of the liquid

Very large vapour space is necessary

Temperature of the heating surface is more than the boiling point of the liquid

Temperature of the heating surface is less than the boiling point of the liquid

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Heat Transfer
The characteristic dimensionless groups for heat transfer to a fluid flowing through a pipe in laminar flow are

Nu, Pr, Re

Nu, Gz

Re.Gz

Nu, Pr

Nu, Pr, Re

Nu, Gz

Re.Gz

Nu, Pr

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Heat Transfer

Heat Transfer The Sieder-Tate correlation for heat transfer in turbulent flow in pipe gives Nu α Re0.8, where, Nu is the Nusselt number and Re is the Reynolds number for the flow. Assuming that this relation is valid, the heat transfer co-efficient varies with the pipe diameter (D) as

Heat Transfer The ratio of total radiating power to the absorptivity of the body depends upon the __________ as per Kirchoffs law.

Heat Transfer A metal wire of 0.01 m dia and thermal conductivity 200 W/m.K is exposed to a fluid stream with a convective heat transfer coefficient of 100 W/m².K. The Biot number is

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

Heat Transfer In sub-cooled boiling,

Heat Transfer The characteristic dimensionless groups for heat transfer to a fluid flowing through a pipe in laminar flow are

Heat Transfer
The Sieder-Tate correlation for heat transfer in turbulent flow in pipe gives Nu α Re0.8, where, Nu is the Nusselt number and Re is the Reynolds number for the flow. Assuming that this relation is valid, the heat transfer co-efficient varies with the pipe diameter (D) as

Heat Transfer
The ratio of total radiating power to the absorptivity of the body depends upon the __________ as per Kirchoffs law.

Heat Transfer
A metal wire of 0.01 m dia and thermal conductivity 200 W/m.K is exposed to a fluid stream with a convective heat transfer coefficient of 100 W/m².K. The Biot number is

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

Heat Transfer
In sub-cooled boiling,

Heat Transfer
The characteristic dimensionless groups for heat transfer to a fluid flowing through a pipe in laminar flow are