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Process Equipment and Plant Design

Process Equipment and Plant Design
In case of a shell and tube heat exchanger, the effect of L/D on inside film heat transfer co-efficient (hi) vanishes after a Reynold number of

10000
1000
5000
3000

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Process Equipment and Plant Design
Which of the following efficiencies can be greater than 100%?

Overall plate efficiency
None of these
Murphree plate efficiency
Point efficiency

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Process Equipment and Plant Design
__________ tray arrangement is recommended for distillation column having diameter upto 4 ft.

Radial flow
Split flow
Cascade
Cross flow

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Process Equipment and Plant Design
Hold up of material in a operating rotary drier is in the range of

0.8 to 0.9
0.25 to 0.50
0.5 to 0.8
0.05 to 0.15

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Process Equipment and Plant Design
Vertical storage vessels are never supported by __________ support.

Skirt
Saddle
Bracket
Lug

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Process Equipment and Plant Design
Pressure drop due to pipe fittings can be estimated by the equation, ΔP/p = 4f.Le/D.V2/2gc, where, Le = equivalent length of straight pipeline which will incur the same frictional loss as the fitting and D = diameter of the fitting. The value of Le/D (dimensionless) for 45° elbow and 180° close return bends would be respectively around

45 and 75
300 and 500
5 and 10
180 and 300

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