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Process Equipment and Plant Design

Process Equipment and Plant Design
In case of 1.5" heat exchanger tubes, the inside flow area __________ with decrease in BWG.

None of these
Increases
Decreases
Remains same

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Process Equipment and Plant Design
In case of bubble cap distillation column of diameter greater than 1.2 metres, the cap diameter is roughly about __________ cms.

35
10
30
20

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Process Equipment and Plant Design
Le/D for a Tee (used as elbow, entering run) would be around

60
5
350
200

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Process Equipment and Plant Design
__________ dished head is the strongest of all.

Torispherical
None of these
Elliptical
Hemispherical

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Process Equipment and Plant Design
Optimum reflux ratio in a continuous distillation column is determined by the

Flooding limit of the column
None of these
Total cost consideration (fixed cost of the column plus the cooling water & steam cost)
Maximum permissible vapour velocity

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

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