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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

3000
5000
1000
10000

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Process Equipment and Plant Design
The normal range of velocity of steam in pipes is __________ m/sec.

80-100
1-5
10-20
0.1-0.5

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Process Equipment and Plant Design
Typical static submergence for bubble cap plate column operating at atmospheric pressure may be around

2.5"
0.5"
50% of the plate spacing
5"

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Process Equipment and Plant Design
Larger depth of liquid on the trays of a distillation column

Results in higher pressure drop per tray
Leads to high tray efficiency
Both A & B
Neither A nor B

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Process Equipment and Plant Design
The minimum shell thickness for tank ≤ 15 metres diameter is limited to __________ mm, for reasons of elastic stability.

5
2
15
10

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Process Equipment and Plant Design
In common bubble cap distillation column design practice, riser area is approximately equal to (where, Aa = Annular passage area, and Sa = Slot area)

Sa = 1.5 Aa
Aa = Sa
Aa = 1.5 Sa
1.2 Aa = 1.2 Sa

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