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

More than 45°C

Initially decreases and remains constant thereafter

Equal to 45°C

Less than 45°C

More than 45°C

Initially decreases and remains constant thereafter

Equal to 45°C

Less than 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

>1

Zero

<1

1

>1

Zero

<1

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Heat Transfer
In a forward feed multiple effect evaporator, the pressure is

Lowest in last effect

Same in all effects

Dependent on the number of effects

Highest in last effect

Lowest in last effect

Same in all effects

Dependent on the number of effects

Highest in last effect

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Heat Transfer
1000 kg of wet solids are to be dried from 60% to 20% moisture (by weight). The mass of moisture removed in kg is

500

400

200

520

500

400

200

520

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Heat Transfer
In counter flow compared to parallel flow,

Less surface area is required for a given heat transfer rate

More surface area is required for a given heat transfer rate

LMTD is greater

Both A and B

Less surface area is required for a given heat transfer rate

More surface area is required for a given heat transfer rate

LMTD is greater

Both A and B

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Heat Transfer
The critical radius of insulation for a spherical shell is (where, K = thermal conductivity of insulating material h0 = heat transfer coefficient at the outer surface)

h0/2K

2K/h0

K/h0

h0/K

h0/2K

2K/h0

K/h0

h0/K

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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 In a forward feed multiple effect evaporator, the pressure is

Heat Transfer 1000 kg of wet solids are to be dried from 60% to 20% moisture (by weight). The mass of moisture removed in kg is

Heat Transfer In counter flow compared to parallel flow,

Heat Transfer The critical radius of insulation for a spherical shell is (where, K = thermal conductivity of insulating material h0 = heat transfer coefficient at the outer surface)

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
In a forward feed multiple effect evaporator, the pressure is

Heat Transfer
1000 kg of wet solids are to be dried from 60% to 20% moisture (by weight). The mass of moisture removed in kg is

Heat Transfer
In counter flow compared to parallel flow,

Heat Transfer
The critical radius of insulation for a spherical shell is (where, K = thermal conductivity of insulating material h0 = heat transfer coefficient at the outer surface)