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Process Equipment and Plant Design

Process Equipment and Plant Design
Pressure drop (Δp) and the superficial gas mass velocity (G) in case of packed absorption tower operating in the preloading range are related as

Δp = G0.5
Δp = 1/G0.6
Δp = G
Δp = G2

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Process Equipment and Plant Design
In case of a 'thin' pressure vessel, the ratio of its diameter to wall thickness is

> 20
30
> 10
< 10

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Process Equipment and Plant Design
Cylinderical shell thickness of rotary drier is generally __________ mm.

43990
43864
44180
18-22

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Process Equipment and Plant Design
In condenser, the cooling water is passed in the tube side in a pass arrangement, because

It reduces heat transfer area
It makes condenser compact
Pressure drop is reduced
More thinner tubes can be used

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Process Equipment and Plant Design
Lessing ring is formed by the addition of a partition across the centre of a raschig ring, which results in an area increase of about __________ percent.

35
5
55
20

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

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

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