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.

16

28

38

19

16

28

38

19

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Process Equipment and Plant Design
Diameter of the seive tray column is determined by the

Lower limit of vapour velocity

Height of the plate spacing

Hole diameter of the seive tray

Upper limit of the vapour velocity

Lower limit of vapour velocity

Height of the plate spacing

Hole diameter of the seive tray

Upper limit of the vapour velocity

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Process Equipment and Plant Design
Mc Cable Thiele method used for finding theoretical stages in a distillation column assumes that the

All of these

Liquid/vapor loading across the column remains constant

Trouton's rule is applicable

Sensible heat differences are small, because the temperature changes from tray to tray is small

All of these

Liquid/vapor loading across the column remains constant

Trouton's rule is applicable

Sensible heat differences are small, because the temperature changes from tray to tray is small

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Process Equipment and Plant Design
The safe distance of habitation from a hazardous chemical plant (TLV of its product < 1000 ppm) should be about __________ kms.

15

5

25

1

15

5

25

1

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Process Equipment and Plant Design
A cylinderical pressure vessel of volume 6 πm³ has to be designed to withstand a maximum internal pressure of 10 atm. The allowable design stress of the material is 125N/mm² and corrosion allowance is 2 mm. The thickness of the vessel for a length/diameter ratio of 3 will be close to

6 mm

8 mm

5 mm

10 mm

6 mm

8 mm

5 mm

10 mm

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Process Equipment and Plant Design
Heat transfer co-efficient, hG(Kcal/hr.m² .°C) and mass velocity of air, G (kg/hr.m² ) for air flow parallel to the surface in case of constant drying rate in batch drying is related as hG = 0.0176G0.8. But when the flow of air perpendicular to the surface is encountered, this equation changes to

HG = 0.0176G0.37

1.004G0.8

HG = 1.004G0.37

0.0176G1.37

HG = 0.0176G0.37

1.004G0.8

HG = 1.004G0.37

0.0176G1.37

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Process Equipment and Plant Design

Process Equipment and Plant Design Diameter of the seive tray column is determined by the

Process Equipment and Plant Design Mc Cable Thiele method used for finding theoretical stages in a distillation column assumes that the

Process Equipment and Plant Design The safe distance of habitation from a hazardous chemical plant (TLV of its product < 1000 ppm) should be about __________ kms.

Process Equipment and Plant Design
Diameter of the seive tray column is determined by the

Process Equipment and Plant Design
Mc Cable Thiele method used for finding theoretical stages in a distillation column assumes that the

Process Equipment and Plant Design
The safe distance of habitation from a hazardous chemical plant (TLV of its product < 1000 ppm) should be about __________ kms.