Tube wall thickness depends on the cor-rosiveness of the fluids and their operating pressure & temperature and is specified by Birmingham wire gauge (B.W.G)-a number which varies from 8 to 18 with the numbers 14 and 16 being more commonly used. Outside diameter of tubes varies from about 15 to 50 mm; however a tube of less than __________ mm outside diameter is generally not recommended for fouling fluids.

Process Equipment and Plant Design
Tube wall thickness depends on the cor-rosiveness of the fluids and their operating pressure & temperature and is specified by Birmingham wire gauge (B.W.G)-a number which varies from 8 to 18 with the numbers 14 and 16 being more commonly used. Outside diameter of tubes varies from about 15 to 50 mm; however a tube of less than __________ mm outside diameter is generally not recommended for fouling fluids.

38

16

19

28

38

16

19

28

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Process Equipment and Plant Design
The ratio of tube length to shell diameter in case of liquid shell and tube heat exchanger ranges from

4 to 8

6 to 12

3 to 5

2 to 3

4 to 8

6 to 12

3 to 5

2 to 3

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Process Equipment and Plant Design
Most of the storage vessels/tanks are made cylindrical, because of the fact that a cylinder

Has greater structural strength

Is easy to fabricate

Neither A nor B

Both A & B

Has greater structural strength

Is easy to fabricate

Neither A nor B

Both A & B

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Process Equipment and Plant Design
Which of the following is not a valid assumption in continuous binary distillation for calculating the number of equilibrium stages by Mc-Cabe-Thiele's method?

Molar latent heat of the two components are equal

Heat of mixing of normal liquid is assumed to be zero

Reflux is not a saturated liquid

Sensible heat changes for vapour & liquid are negligibly small

Molar latent heat of the two components are equal

Heat of mixing of normal liquid is assumed to be zero

Reflux is not a saturated liquid

Sensible heat changes for vapour & liquid are negligibly small

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Process Equipment and Plant Design
A forced circulation long tube vertical evaporator as compared to the natural circulation evaporator

Is economical in operation

Employs a centrifugal pump placed between external downtake from vapor drum and inlet to tube bundle

Both B & C

Employs high velocity, high heat transfer rate and less heating surface requirement

Is economical in operation

Employs a centrifugal pump placed between external downtake from vapor drum and inlet to tube bundle

Both B & C

Employs high velocity, high heat transfer rate and less heating surface requirement

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Process Equipment and Plant Design
The equivalent diameter for fluid flow through a channel of constant non-circular cross section of area 'A' is given by (where, P = perimeter of the channel in contact with the fluid)

A/P

4 A/P

√A

4 P/A

A/P

4 A/P

√A

4 P/A

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Process Equipment and Plant Design

Process Equipment and Plant Design The ratio of tube length to shell diameter in case of liquid shell and tube heat exchanger ranges from

Process Equipment and Plant Design Most of the storage vessels/tanks are made cylindrical, because of the fact that a cylinder

Process Equipment and Plant Design Which of the following is not a valid assumption in continuous binary distillation for calculating the number of equilibrium stages by Mc-Cabe-Thiele's method?

Process Equipment and Plant Design A forced circulation long tube vertical evaporator as compared to the natural circulation evaporator

Process Equipment and Plant Design The equivalent diameter for fluid flow through a channel of constant non-circular cross section of area 'A' is given by (where, P = perimeter of the channel in contact with the fluid)

Process Equipment and Plant Design
The ratio of tube length to shell diameter in case of liquid shell and tube heat exchanger ranges from

Process Equipment and Plant Design
Most of the storage vessels/tanks are made cylindrical, because of the fact that a cylinder

Process Equipment and Plant Design
Which of the following is not a valid assumption in continuous binary distillation for calculating the number of equilibrium stages by Mc-Cabe-Thiele's method?

Process Equipment and Plant Design
A forced circulation long tube vertical evaporator as compared to the natural circulation evaporator

Process Equipment and Plant Design
The equivalent diameter for fluid flow through a channel of constant non-circular cross section of area 'A' is given by (where, P = perimeter of the channel in contact with the fluid)