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
For a cylindrical shell, (subject to the thickness of uppermost course being more than the minimum for diaofthe tank in question), the thickness of the courses of shell

May decrease or increase upwards depending upon whether vacuum or positive pressure would be maintained inside the shell

Remains same throughout

Decreases upwards

Increases upwards

May decrease or increase upwards depending upon whether vacuum or positive pressure would be maintained inside the shell

Remains same throughout

Decreases upwards

Increases upwards

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Process Equipment and Plant Design
Wind load consideration in the design of a support can be neglected, when the vessel is

Tall but empty

Tall (say 30 metres), but is full of liquid

Short (< 2 m) and housed indoor

None of these

Tall but empty

Tall (say 30 metres), but is full of liquid

Short (< 2 m) and housed indoor

None of these

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Process Equipment and Plant Design
In a shell and tube heat exchanger, the overall heat transfer co-efficient is proportional to the tube side (volumetric flow rate)0.8. This is valid, only when the ratio of the tube side film resistance to the total resistance is almost equal to

20.8

1

∞

2

20.8

1

∞

2

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Process Equipment and Plant Design
The function of manholes provided in the shell of a distillation column is to

Guard against foaming & entrainment by dumping antifoaming agent through it

All of these

Give access to the individual trays for cleaning, maintenance and installation

Keep a check on the liquid gradient over the plate by direct visual observation

Guard against foaming & entrainment by dumping antifoaming agent through it

All of these

Give access to the individual trays for cleaning, maintenance and installation

Keep a check on the liquid gradient over the plate by direct visual observation

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Process Equipment and Plant Design
Excessive liquid gradient on a tray may result in the

All of these

Maldistribution of gas

Back trapping

Gas blowing beneath cap skit

All of these

Maldistribution of gas

Back trapping

Gas blowing beneath cap skit

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Process Equipment and Plant Design

Process Equipment and Plant Design For a cylindrical shell, (subject to the thickness of uppermost course being more than the minimum for diaofthe tank in question), the thickness of the courses of shell

Process Equipment and Plant Design Wind load consideration in the design of a support can be neglected, when the vessel is

Process Equipment and Plant Design In a shell and tube heat exchanger, the overall heat transfer co-efficient is proportional to the tube side (volumetric flow rate)0.8. This is valid, only when the ratio of the tube side film resistance to the total resistance is almost equal to

Process Equipment and Plant Design The function of manholes provided in the shell of a distillation column is to

Process Equipment and Plant Design Excessive liquid gradient on a tray may result in the

Process Equipment and Plant Design
For a cylindrical shell, (subject to the thickness of uppermost course being more than the minimum for diaofthe tank in question), the thickness of the courses of shell

Process Equipment and Plant Design
Wind load consideration in the design of a support can be neglected, when the vessel is

Process Equipment and Plant Design
In a shell and tube heat exchanger, the overall heat transfer co-efficient is proportional to the tube side (volumetric flow rate)0.8. This is valid, only when the ratio of the tube side film resistance to the total resistance is almost equal to

Process Equipment and Plant Design
The function of manholes provided in the shell of a distillation column is to

Process Equipment and Plant Design
Excessive liquid gradient on a tray may result in the