Value of Peclet number = ∞, is the representative of

Process Equipment and Plant Design
Value of Peclet number = ∞, is the representative of

Complete back mixing

Laminar flow

Eddy diffusivity = 0

Plug flow

Complete back mixing

Laminar flow

Eddy diffusivity = 0

Plug flow

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Process Equipment and Plant Design
Number of evaporators which can be used in service in a multiple effect evaporation system is limited by the

Neither A nor B

Practical limit reached, due to low heat transfer rate because of inadequate temperature difference

Both A & B

Economic limit reached, when the plant cost exceeds the saving of steam

Neither A nor B

Practical limit reached, due to low heat transfer rate because of inadequate temperature difference

Both A & B

Economic limit reached, when the plant cost exceeds the saving of steam

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Process Equipment and Plant Design
Pick out the wrong statement pertaining to the design of the bubble cap tray of a distillation column to give stable operation and even vapour distribution.

The dimensionless ratio of liquid gradient to pressure drop head caused by the bubble cap assembly should be less than 0.4

None of these

Tendency towards stable operation is increased by increasing the skirt clearance of the caps, lowering the rate of liquid flow per unit plate width or increasing the spacing between the caps

The pressure drop due to the caps & slots and the static submergence should be as high as practicable for reasonable operation

The dimensionless ratio of liquid gradient to pressure drop head caused by the bubble cap assembly should be less than 0.4

None of these

Tendency towards stable operation is increased by increasing the skirt clearance of the caps, lowering the rate of liquid flow per unit plate width or increasing the spacing between the caps

The pressure drop due to the caps & slots and the static submergence should be as high as practicable for reasonable operation

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Process Equipment and Plant Design
In a distillation column, minimum clearance to be maintained betweeen the overflow weir and the last row of the bubble caps is __________ cms.

15

2.5

7.5

20

15

2.5

7.5

20

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Process Equipment and Plant Design
In a shell and tube heat exchanger having triangular pitch, the shell side equivalent diameter is given by

(p² - πd²/4)/πd

4(0.86p² - πd²)/πd

(4p² - πd²/4)/πd

4(0.86p² - πd²/4)/πd

(p² - πd²/4)/πd

4(0.86p² - πd²)/πd

(4p² - πd²/4)/πd

4(0.86p² - πd²/4)/πd

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Process Equipment and Plant Design
Which of the following factors determine the amount of entrainment in a distillation column?

Depth of liquid above the bubble cap slots

All of these

Vapour velocity in the volume between the plates

Plate spacing

Depth of liquid above the bubble cap slots

All of these

Vapour velocity in the volume between the plates

Plate spacing

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Process Equipment and Plant Design

Process Equipment and Plant Design Value of Peclet number = ∞, is the representative of

Process Equipment and Plant Design Number of evaporators which can be used in service in a multiple effect evaporation system is limited by the

Process Equipment and Plant Design Pick out the wrong statement pertaining to the design of the bubble cap tray of a distillation column to give stable operation and even vapour distribution.

Process Equipment and Plant Design In a distillation column, minimum clearance to be maintained betweeen the overflow weir and the last row of the bubble caps is __________ cms.

Process Equipment and Plant Design In a shell and tube heat exchanger having triangular pitch, the shell side equivalent diameter is given by

Process Equipment and Plant Design Which of the following factors determine the amount of entrainment in a distillation column?

Process Equipment and Plant Design
Value of Peclet number = ∞, is the representative of

Process Equipment and Plant Design
Number of evaporators which can be used in service in a multiple effect evaporation system is limited by the

Process Equipment and Plant Design
Pick out the wrong statement pertaining to the design of the bubble cap tray of a distillation column to give stable operation and even vapour distribution.

Process Equipment and Plant Design
In a distillation column, minimum clearance to be maintained betweeen the overflow weir and the last row of the bubble caps is __________ cms.

Process Equipment and Plant Design
In a shell and tube heat exchanger having triangular pitch, the shell side equivalent diameter is given by

Process Equipment and Plant Design
Which of the following factors determine the amount of entrainment in a distillation column?