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Process Equipment and Plant Design

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

75
300
25
10

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Process Equipment and Plant Design
The necessary wall thickness for a metallic storage vessel is a function of the

Diameter of the vessel
All of these
Ultimate tensile strength (or yield point) of the material and operating temperature
Operating pressure and welding/joint efficiency

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Process Equipment and Plant Design
Tube side pressure drop in a 1-2 heat exchanger (for turbulent flow of fluids through the tubes) is about __________ times, that in a 1-1 heat exchanger having the same size & number of tubes and operated at the same liquid flow rate.

4
8
1/2
2

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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

0.0176G1.37
HG = 0.0176G0.37
HG = 1.004G0.37
1.004G0.8

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Process Equipment and Plant Design
A minimum clearance of about __________ mm is maintained between the distillation column wall and the bubble cap.

19
38
95
76

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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 (say 30 metres), but is full of liquid
Tall but empty
Short (< 2 m) and housed indoor
None of these

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