In a heat exchanger with steam outside the tubes, a liquid gets heated to 45°C, when its flow velocity in the tubes is 2 m/s. If the flow velocity is reduced to 1 m/s, other things remaining the same, the temperature of the exit liquid will be

Heat Transfer
In a heat exchanger with steam outside the tubes, a liquid gets heated to 45°C, when its flow velocity in the tubes is 2 m/s. If the flow velocity is reduced to 1 m/s, other things remaining the same, the temperature of the exit liquid will be

Equal to 45°C

More than 45°C

Initially decreases and remains constant thereafter

Less than 45°C

Equal to 45°C

More than 45°C

Initially decreases and remains constant thereafter

Less than 45°C

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Heat Transfer
Leidenfrost point is a term concerned with the

Heat transfer between two highly viscous liquids

Boiling of a liquid on a hot surface

Condensation of the saturated vapor on a cold surface

Concentration of a corrosive solution by evaporation

Heat transfer between two highly viscous liquids

Boiling of a liquid on a hot surface

Condensation of the saturated vapor on a cold surface

Concentration of a corrosive solution by evaporation

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Heat Transfer
A concentric double pipe heat exchanger as compared to the shell and tube heat exchanger for the same heat load requires

Less heating surface

Lower maintenance cost

More space

None of these

Less heating surface

Lower maintenance cost

More space

None of these

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Heat Transfer
The film co-efficient is decreased due to the presence of non-condensing gases in the vapors. The film co-efficient of superheated vapor as compared to that of saturated vapor is

Less

More

Either more or less ; depends on the nature of vapor

Some

Less

More

Either more or less ; depends on the nature of vapor

Some

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Heat Transfer
Small scale evaporation is done in a

Condenser

Heat exchanger

Steam jacketed kettle

Multiple effect evaporator

Condenser

Heat exchanger

Steam jacketed kettle

Multiple effect evaporator

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Heat Transfer
The purpose of providing bleed points in the evaporator is to

Facilitate removal of non-condensable gases

Create vacuum

Admit the feed

Remove the product

Facilitate removal of non-condensable gases

Create vacuum

Admit the feed

Remove the product

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Heat Transfer

Heat Transfer In a heat exchanger with steam outside the tubes, a liquid gets heated to 45°C, when its flow velocity in the tubes is 2 m/s. If the flow velocity is reduced to 1 m/s, other things remaining the same, the temperature of the exit liquid will be

Heat Transfer Leidenfrost point is a term concerned with the

Heat Transfer A concentric double pipe heat exchanger as compared to the shell and tube heat exchanger for the same heat load requires

Heat Transfer The film co-efficient is decreased due to the presence of non-condensing gases in the vapors. The film co-efficient of superheated vapor as compared to that of saturated vapor is

Heat Transfer Small scale evaporation is done in a

Heat Transfer The purpose of providing bleed points in the evaporator is to

Heat Transfer
In a heat exchanger with steam outside the tubes, a liquid gets heated to 45°C, when its flow velocity in the tubes is 2 m/s. If the flow velocity is reduced to 1 m/s, other things remaining the same, the temperature of the exit liquid will be

Heat Transfer
Leidenfrost point is a term concerned with the

Heat Transfer
A concentric double pipe heat exchanger as compared to the shell and tube heat exchanger for the same heat load requires

Heat Transfer
The film co-efficient is decreased due to the presence of non-condensing gases in the vapors. The film co-efficient of superheated vapor as compared to that of saturated vapor is

Heat Transfer
Small scale evaporation is done in a

Heat Transfer
The purpose of providing bleed points in the evaporator is to