Hot water (0.01 m³ /min) enters the tube side of a counter current shell and tube heat exchanger at 80°C and leaves at 50°C. Cold oil (0.05 m³/min) of density 800 kg/m³ and specific heat of 2 kJ/kg.K enters at 20°C. The log mean temperature difference in °C is approximately

Heat Transfer
Hot water (0.01 m³ /min) enters the tube side of a counter current shell and tube heat exchanger at 80°C and leaves at 50°C. Cold oil (0.05 m³/min) of density 800 kg/m³ and specific heat of 2 kJ/kg.K enters at 20°C. The log mean temperature difference in °C is approximately

37

50

45

32

37

50

45

32

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Heat Transfer
A process stream of dilute aqueous solution flowing at the rate of10 Kg.s⁻¹ is to be heated. Steam condensate at 95°C is available for heating purpose, also at a rate of 10 Kg.s⁻¹. A 1 - 1 shell and tube heat exchanger is available. The best arrangement is

Counter flow with process stream on shell side

Counter flow with process stream on tube side

Parallel flow with process stream on shell side

Parallel flow with process stream on tube side

Counter flow with process stream on shell side

Counter flow with process stream on tube side

Parallel flow with process stream on shell side

Parallel flow with process stream on tube side

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

None of these

Factor of safety

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

Non-dimensional factor

None of these

Factor of safety

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

Non-dimensional factor

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Heat Transfer
Corrosiveness of steam condensate is due to the presence of

CO₂

Both A & B

Dissolved O₂

Neither A nor B

CO₂

Both A & B

Dissolved O₂

Neither A nor B

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Heat Transfer
For __________ Prandtl number values, the heat conduction will be negligible in the buffer zone.

Extremely low

No

Low

High

Extremely low

No

Low

High

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Heat Transfer
With increase in temperature, the total emissivity of conductors

Decreases

Remains same

Increases

Decreases linearly

Decreases

Remains same

Increases

Decreases linearly

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Heat Transfer

Heat Transfer Hot water (0.01 m³ /min) enters the tube side of a counter current shell and tube heat exchanger at 80°C and leaves at 50°C. Cold oil (0.05 m³/min) of density 800 kg/m³ and specific heat of 2 kJ/kg.K enters at 20°C. The log mean temperature difference in °C is approximately

Heat Transfer A process stream of dilute aqueous solution flowing at the rate of10 Kg.s⁻¹ is to be heated. Steam condensate at 95°C is available for heating purpose, also at a rate of 10 Kg.s⁻¹. A 1 - 1 shell and tube heat exchanger is available. The best arrangement is

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

Heat Transfer Corrosiveness of steam condensate is due to the presence of

Heat Transfer For __________ Prandtl number values, the heat conduction will be negligible in the buffer zone.

Heat Transfer With increase in temperature, the total emissivity of conductors

Heat Transfer
Hot water (0.01 m³ /min) enters the tube side of a counter current shell and tube heat exchanger at 80°C and leaves at 50°C. Cold oil (0.05 m³/min) of density 800 kg/m³ and specific heat of 2 kJ/kg.K enters at 20°C. The log mean temperature difference in °C is approximately

Heat Transfer
A process stream of dilute aqueous solution flowing at the rate of10 Kg.s⁻¹ is to be heated. Steam condensate at 95°C is available for heating purpose, also at a rate of 10 Kg.s⁻¹. A 1 - 1 shell and tube heat exchanger is available. The best arrangement is

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

Heat Transfer
Corrosiveness of steam condensate is due to the presence of

Heat Transfer
For __________ Prandtl number values, the heat conduction will be negligible in the buffer zone.

Heat Transfer
With increase in temperature, the total emissivity of conductors