The variation of thermal conductivity of a metal with temperature is often correlated using an expression of the form K = K₀ + at. where, K is the thermal conductivity and T is the temperature (in °K). The units of 'a' in SI system will be

Heat Transfer
The variation of thermal conductivity of a metal with temperature is often correlated using an expression of the form K = K₀ + at. where, K is the thermal conductivity and T is the temperature (in °K). The units of 'a' in SI system will be

W/m

W/m.k

W/m.k²

None, A is just a number

W/m

W/m.k

W/m.k²

None, A is just a number

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Heat Transfer
The inside heat transfer co-efficient in case of turbulent flow of liquid in the tube side in a 1-2 shell and tube heat exchanger is increased by __________ times, when the number of tube passes is increased to 8.

20.8

40.8

40.4

20.4

20.8

40.8

40.4

20.4

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Heat Transfer
In case of vertical tube evaporator, with increase in liquor level, the overall heat transfer co-efficient

Is not affected

Decreases

May increase or decrease; depends on the feed

Increases

Is not affected

Decreases

May increase or decrease; depends on the feed

Increases

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Heat Transfer
Removal of __________ heat is involved in the condensation of a vapor under saturated conditions.

Both B & C

Latent

Super

Sensible

Both B & C

Latent

Super

Sensible

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Heat Transfer
Which of the following parameters is increased by use of finned tube in a multipass shell and tube heat exchanger?

All of these

Convective heat transfer co-efficient

Tube side pressure drop and the heat transfer rate

Effective tube surface area for convective heat transfer

All of these

Convective heat transfer co-efficient

Tube side pressure drop and the heat transfer rate

Effective tube surface area for convective heat transfer

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Heat Transfer
Double pipe heat exchangers are preferably useful, when

Requirement of heat transfer area is low

A corrosive liquid is to be heated

Overall heat transfer co-efficient is very high

High viscosity liquid is to be cooled

Requirement of heat transfer area is low

A corrosive liquid is to be heated

Overall heat transfer co-efficient is very high

High viscosity liquid is to be cooled

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Heat Transfer

Heat Transfer The variation of thermal conductivity of a metal with temperature is often correlated using an expression of the form K = K₀ + at. where, K is the thermal conductivity and T is the temperature (in °K). The units of 'a' in SI system will be

Heat Transfer The inside heat transfer co-efficient in case of turbulent flow of liquid in the tube side in a 1-2 shell and tube heat exchanger is increased by __________ times, when the number of tube passes is increased to 8.

Heat Transfer In case of vertical tube evaporator, with increase in liquor level, the overall heat transfer co-efficient

Heat Transfer Removal of __________ heat is involved in the condensation of a vapor under saturated conditions.

Heat Transfer Which of the following parameters is increased by use of finned tube in a multipass shell and tube heat exchanger?

Heat Transfer Double pipe heat exchangers are preferably useful, when

Heat Transfer
The variation of thermal conductivity of a metal with temperature is often correlated using an expression of the form K = K₀ + at. where, K is the thermal conductivity and T is the temperature (in °K). The units of 'a' in SI system will be

Heat Transfer
The inside heat transfer co-efficient in case of turbulent flow of liquid in the tube side in a 1-2 shell and tube heat exchanger is increased by __________ times, when the number of tube passes is increased to 8.

Heat Transfer
In case of vertical tube evaporator, with increase in liquor level, the overall heat transfer co-efficient

Heat Transfer
Removal of __________ heat is involved in the condensation of a vapor under saturated conditions.

Heat Transfer
Which of the following parameters is increased by use of finned tube in a multipass shell and tube heat exchanger?

Heat Transfer
Double pipe heat exchangers are preferably useful, when