Which tube arrangement in a heat exchanger would facilitate highest heat transfer rate?

Process Equipment and Plant Design
Which tube arrangement in a heat exchanger would facilitate highest heat transfer rate?

Diagonal square pitch

Square pitch

Triangular pitch

Heat transfer rate is independent of tube arrangement

Diagonal square pitch

Square pitch

Triangular pitch

Heat transfer rate is independent of tube arrangement

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Process Equipment and Plant Design
The main purpose of providing stepping on the trays is to

Decrease the pressure drop

Facilitate handling of large flow rate of liquid

Improve the flow condition

Increase the residence time

Decrease the pressure drop

Facilitate handling of large flow rate of liquid

Improve the flow condition

Increase the residence time

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Process Equipment and Plant Design
The LMTD correction factor (FT) is defined as the

Ratio of LMTD to the true temperature difference

Differenced of true temperature difference and the LMTD

Geometric mean of the true temperature difference and the LMTD

Ratio of true temperature difference to the LMTD

Ratio of LMTD to the true temperature difference

Differenced of true temperature difference and the LMTD

Geometric mean of the true temperature difference and the LMTD

Ratio of true temperature difference to the LMTD

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Process Equipment and Plant Design
Liquid gradient over a tray can be minimised by

All of these

Decreasing the number of rows of caps through which the liquid flows or by decreasing the velocity of liquid flow past the caps or by reducing the distance along the tray through which the liquid must

Providing a higher skirt clearance or a higher weir

Using split flow, radial flow or cascade flow for column diameter large than 4 ft

All of these

Decreasing the number of rows of caps through which the liquid flows or by decreasing the velocity of liquid flow past the caps or by reducing the distance along the tray through which the liquid must

Providing a higher skirt clearance or a higher weir

Using split flow, radial flow or cascade flow for column diameter large than 4 ft

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Process Equipment and Plant Design
In a multiple effect evaporator system having 'n' effects, the amount of water evaporated per unit surface area in approximately equal to __________ times that in a single effect.

0.5 nth

1.5 nth

(1/n)th

nth

0.5 nth

1.5 nth

(1/n)th

nth

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Process Equipment and Plant Design
With increase in temperature drop (in a shell and tube heat exchanger), the LMTD correction factor, FT

Increases very rapidly

Increases linearly

Decreases very rapidly

Remains constant

Increases very rapidly

Increases linearly

Decreases very rapidly

Remains constant

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Process Equipment and Plant Design

Process Equipment and Plant Design Which tube arrangement in a heat exchanger would facilitate highest heat transfer rate?

Process Equipment and Plant Design The main purpose of providing stepping on the trays is to

Process Equipment and Plant Design The LMTD correction factor (FT) is defined as the

Process Equipment and Plant Design Liquid gradient over a tray can be minimised by

Process Equipment and Plant Design In a multiple effect evaporator system having 'n' effects, the amount of water evaporated per unit surface area in approximately equal to __________ times that in a single effect.

Process Equipment and Plant Design With increase in temperature drop (in a shell and tube heat exchanger), the LMTD correction factor, FT

Process Equipment and Plant Design
Which tube arrangement in a heat exchanger would facilitate highest heat transfer rate?

Process Equipment and Plant Design
The main purpose of providing stepping on the trays is to

Process Equipment and Plant Design
The LMTD correction factor (FT) is defined as the

Process Equipment and Plant Design
Liquid gradient over a tray can be minimised by

Process Equipment and Plant Design
In a multiple effect evaporator system having 'n' effects, the amount of water evaporated per unit surface area in approximately equal to __________ times that in a single effect.

Process Equipment and Plant Design
With increase in temperature drop (in a shell and tube heat exchanger), the LMTD correction factor, FT