Le/D for fully open globe value may be around

Process Equipment and Plant Design
Le/D for fully open globe value may be around

300

75

25

10

300

75

25

10

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Process Equipment and Plant Design
Maximum allowable vapour velocity in a bubble cap tower is determined by the

Diameter of the column

Vapour density

Entrainment considerations

None of these

Diameter of the column

Vapour density

Entrainment considerations

None of these

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Process Equipment and Plant Design
Tubes are fixed to the tube sheet (a thick circular metallic plate) by the method of tube rolling and brazing (non-removable) or ferrule connection (removable). Thickness of the tube, sheet is normally __________ the outside diameter of the tube but in no case it should be less than 22 mm (7/8").

Half

Three fourth

Equal to

1.5 times

Half

Three fourth

Equal to

1.5 times

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Process Equipment and Plant Design
Pick out the wrong statement about distillation operation

In differential (simple) distillation, the vapour is removed as soon as it is formed without appreciable condensation

Distillation under vacuum is a substitute for steam distillation

In flash (equilibrium) distillation, a definite fraction of liquid is vaporised in such a way that the evolved vapour & residual liquids are in equilibrium with each other

Flash distillation, differential distillation & steam distillation are all continuous distillation processes

In differential (simple) distillation, the vapour is removed as soon as it is formed without appreciable condensation

Distillation under vacuum is a substitute for steam distillation

In flash (equilibrium) distillation, a definite fraction of liquid is vaporised in such a way that the evolved vapour & residual liquids are in equilibrium with each other

Flash distillation, differential distillation & steam distillation are all continuous distillation processes

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Process Equipment and Plant Design
In shell and tube heat exchangers, straight tie rods are used to

None of these

Fix the tubes in position

Hold baffle in space

Account for thermal strain

None of these

Fix the tubes in position

Hold baffle in space

Account for thermal strain

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Process Equipment and Plant Design
In a double pipe (concentric) heat exchanger, the hydraulic radius for heat transfer (for a fluid flowing through the annulus) would be

Same as that for fluid flow

D₂ - D₁ (D₁ and D₂ are I.D. of inner and outer pipes respectively)

Less than that for fluid flow

More than that for fluid flow

Same as that for fluid flow

D₂ - D₁ (D₁ and D₂ are I.D. of inner and outer pipes respectively)

Less than that for fluid flow

More than that for fluid flow

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Process Equipment and Plant Design

Process Equipment and Plant Design Le/D for fully open globe value may be around

Process Equipment and Plant Design Maximum allowable vapour velocity in a bubble cap tower is determined by the

Process Equipment and Plant Design Pick out the wrong statement about distillation operation

Process Equipment and Plant Design In shell and tube heat exchangers, straight tie rods are used to

Process Equipment and Plant Design In a double pipe (concentric) heat exchanger, the hydraulic radius for heat transfer (for a fluid flowing through the annulus) would be

Process Equipment and Plant Design
Le/D for fully open globe value may be around

Process Equipment and Plant Design
Maximum allowable vapour velocity in a bubble cap tower is determined by the

Process Equipment and Plant Design
Pick out the wrong statement about distillation operation

Process Equipment and Plant Design
In shell and tube heat exchangers, straight tie rods are used to

Process Equipment and Plant Design
In a double pipe (concentric) heat exchanger, the hydraulic radius for heat transfer (for a fluid flowing through the annulus) would be