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

Initially decreases and remains constant thereafter

More than 45°C

Less than 45°C

Equal to 45°C

Initially decreases and remains constant thereafter

More than 45°C

Less than 45°C

Equal to 45°C

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Heat Transfer
LMTD correction factor which is to be applied for a cross-flow heat exchanger increases with increase in the number of shell passes. Its value for a single pass cross flow heat exchanger is

1

Zero

>1

<1

1

Zero

>1

<1

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Heat Transfer
Stefan-Boltzman law applies to __________ body

white

grey

black

None of the listed here

white

grey

black

None of the listed here

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Heat Transfer
As the difference between the wall temperature and bulk temperature increases, the boiling heat transfer co-efficient

continues to increase

continues to decrease

goes through a minimum

goes through a maximum.

continues to increase

continues to decrease

goes through a minimum

goes through a maximum.

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Heat Transfer
Prandtl and Reynolds analogy are same, when Prandtl number is

> 2

1.5

1

0.5

> 2

1.5

1

0.5

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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

Factor of safety

Non-dimensional factor

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

None of these

Factor of safety

Non-dimensional factor

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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 LMTD correction factor which is to be applied for a cross-flow heat exchanger increases with increase in the number of shell passes. Its value for a single pass cross flow heat exchanger is

Heat Transfer Stefan-Boltzman law applies to __________ body

Heat Transfer As the difference between the wall temperature and bulk temperature increases, the boiling heat transfer co-efficient

Heat Transfer Prandtl and Reynolds analogy are same, when Prandtl number is

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

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
LMTD correction factor which is to be applied for a cross-flow heat exchanger increases with increase in the number of shell passes. Its value for a single pass cross flow heat exchanger is

Heat Transfer
Stefan-Boltzman law applies to __________ body

Heat Transfer
As the difference between the wall temperature and bulk temperature increases, the boiling heat transfer co-efficient

Heat Transfer
Prandtl and Reynolds analogy are same, when Prandtl number is

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