Length to diameter ratio of most rotary driers is in the range of

Process Equipment and Plant Design
Length to diameter ratio of most rotary driers is in the range of

1 to 2

20 to 30

10 to 20

4 to 10

1 to 2

20 to 30

10 to 20

4 to 10

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Process Equipment and Plant Design
In a double pipe concentric heat exchanger, the equivalent diameter of annulus for heat transfer would be (where, D₁ and D₂ are I.D. of inner and outer pipes)

None of these

D₂ - D₁

(D₂² - D₁²)/D₂²

(D₂² - D₁²)/D₁²

None of these

D₂ - D₁

(D₂² - D₁²)/D₂²

(D₂² - D₁²)/D₁²

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Process Equipment and Plant Design
In condenser, the cooling water is passed in the tube side in a pass arrangement, because

More thinner tubes can be used

It makes condenser compact

Pressure drop is reduced

It reduces heat transfer area

More thinner tubes can be used

It makes condenser compact

Pressure drop is reduced

It reduces heat transfer area

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Process Equipment and Plant Design
In case of design of a shell and tube heat exchanger,

All of these

O.D. of the tube is 6 to 40 mm while the tube lengths used are 0.5, 2.5, 3.0, 4.0, 5.0, 6 metres

Minimum cleaning lane of 6.5 mm is provided, when tubes are on a square pitch

Minimum tube sheet thickness (in which tubes are fixed) is equal to the O.D. of the tube upto 15 mm tube diameter; and for > 15 mm tube diameter, tube sheet thickness is smaller than tube diameter

All of these

O.D. of the tube is 6 to 40 mm while the tube lengths used are 0.5, 2.5, 3.0, 4.0, 5.0, 6 metres

Minimum cleaning lane of 6.5 mm is provided, when tubes are on a square pitch

Minimum tube sheet thickness (in which tubes are fixed) is equal to the O.D. of the tube upto 15 mm tube diameter; and for > 15 mm tube diameter, tube sheet thickness is smaller than tube diameter

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Process Equipment and Plant Design
Maximum size of the raschig rings used in a packed tower is about __________ of the coloumn diameter.

1/10th

1/50th

1/30th

1/20th

1/10th

1/50th

1/30th

1/20th

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Process Equipment and Plant Design
Vertical condenser is advantageous to the horizontal condenser from operation point of view, when

Only the function of condensation is to be carried out

Sub cooling of condensate is desired

Hydrostatic head is required for refluxing the condensate

Both the functions of condensation & sub cooling are carried out in a single unit

Only the function of condensation is to be carried out

Sub cooling of condensate is desired

Hydrostatic head is required for refluxing the condensate

Both the functions of condensation & sub cooling are carried out in a single unit

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Process Equipment and Plant Design

Process Equipment and Plant Design Length to diameter ratio of most rotary driers is in the range of

Process Equipment and Plant Design In a double pipe concentric heat exchanger, the equivalent diameter of annulus for heat transfer would be (where, D₁ and D₂ are I.D. of inner and outer pipes)

Process Equipment and Plant Design In condenser, the cooling water is passed in the tube side in a pass arrangement, because

Process Equipment and Plant Design In case of design of a shell and tube heat exchanger,

Process Equipment and Plant Design Maximum size of the raschig rings used in a packed tower is about __________ of the coloumn diameter.

Process Equipment and Plant Design Vertical condenser is advantageous to the horizontal condenser from operation point of view, when

Process Equipment and Plant Design
Length to diameter ratio of most rotary driers is in the range of

Process Equipment and Plant Design
In a double pipe concentric heat exchanger, the equivalent diameter of annulus for heat transfer would be (where, D₁ and D₂ are I.D. of inner and outer pipes)

Process Equipment and Plant Design
In condenser, the cooling water is passed in the tube side in a pass arrangement, because

Process Equipment and Plant Design
In case of design of a shell and tube heat exchanger,

Process Equipment and Plant Design
Maximum size of the raschig rings used in a packed tower is about __________ of the coloumn diameter.

Process Equipment and Plant Design
Vertical condenser is advantageous to the horizontal condenser from operation point of view, when