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
Which of the following is unimportant in forced convection ?

Grashhoff number

Reynolds number

none of the listed here

Prandtl number

Grashhoff number

Reynolds number

none of the listed here

Prandtl number

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Heat Transfer
Heat flux is the time rate of heat transfer per unit

area

none of the listed here

length

volume

area

none of the listed here

length

volume

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Heat Transfer
In thermal radiation for a black body (where, ε is emissivity and α is absorptivity)

α = 1; ε ≠ 1

α ≠ 1, ε = 1

α ≠ 1, ε ≠ 1

α = 1; ε = 1

α = 1; ε ≠ 1

α ≠ 1, ε = 1

α ≠ 1, ε ≠ 1

α = 1; ε = 1

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Heat Transfer
'Fouling factor' used in the design of a multipass shell and tube heat exchanger is a

Conversion factor for individual film heat transfer co-efficient to overall heat transfer co-efficient

None of these

Non-dimensional factor

Factor of safety

Conversion factor for individual film heat transfer co-efficient to overall heat transfer co-efficient

None of these

Non-dimensional factor

Factor of safety

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Heat Transfer
Condensing film co-efficient for steam on horizontal tubes ranges from 5000 to 15000 Kcal/hr.m² .°C. Condensation of vapor is carried out inside the tube in a shell and tube heat exchanger, when the

Higher condensing film co-efficient is desired

Condensate is corrosive in nature

Temperature of the incoming vapor is very high

Lower pressure drop through the exchanger is desired

Higher condensing film co-efficient is desired

Condensate is corrosive in nature

Temperature of the incoming vapor is very high

Lower pressure drop through the exchanger is desired

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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 Which of the following is unimportant in forced convection ?

Heat Transfer Heat flux is the time rate of heat transfer per unit

Heat Transfer In thermal radiation for a black body (where, ε is emissivity and α is absorptivity)

Heat Transfer 'Fouling factor' used in the design of a multipass shell and tube heat exchanger is a

Heat Transfer Condensing film co-efficient for steam on horizontal tubes ranges from 5000 to 15000 Kcal/hr.m² .°C. Condensation of vapor is carried out inside the tube in a shell and tube heat exchanger, when the

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
Which of the following is unimportant in forced convection ?

Heat Transfer
Heat flux is the time rate of heat transfer per unit

Heat Transfer
In thermal radiation for a black body (where, ε is emissivity and α is absorptivity)

Heat Transfer
'Fouling factor' used in the design of a multipass shell and tube heat exchanger is a

Heat Transfer
Condensing film co-efficient for steam on horizontal tubes ranges from 5000 to 15000 Kcal/hr.m² .°C. Condensation of vapor is carried out inside the tube in a shell and tube heat exchanger, when the