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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

5000
3000
1000
10000

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Process Equipment and Plant Design
What is the slope of the feed line, if the feed to a distillation column is a saturated liquid?

∞
< 1
> 1

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Process Equipment and Plant Design
In a shell and tube heat exchanger, the 'tube pitch' is defined as the

None of these
O.D. of the tube for square pitch
Shortest distance between two adj acent tube holes
Shortest centre to centre distance between adjacent tubes

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Process Equipment and Plant Design
The raio, (properller agitator dia/tank dia) is normally taken as

0.15-030
0.60-0.90
0.75-0.85
0.5-0.65

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Process Equipment and Plant Design
In a cylinderical vessel subjected to internal pressure, the longitudinal stress σL and the circumferential stress, σh are related by

No relation exists
σh = σL
σh = 2 σL
σh = σL/2

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Process Equipment and Plant Design
Which of the following packing materials provides for maximum mass transfer?

Raschig rings
Lessig rings
All of these
Cross-partition rings

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