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Process Equipment and Plant Design

Process Equipment and Plant Design
A pressure vessel is said to be made of 'thick' shell, if the ratio of its diameter to wall thickness is

20
20
10
10

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Process Equipment and Plant Design
In a double pipe concentric heat exchanger, the equivalent diameter of annulus for heat transfer would be (where, D₁ and D₂ are I.D. of inner and outer pipes)

D₂ - D₁
None of these
(D₂² - D₁²)/D₁²
(D₂² - D₁²)/D₂²

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Process Equipment and Plant Design
It is not desirable to design a heat exchanger for LMTD correction factor, FT, of less than

0.55
0.95
0.99
0.8

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Process Equipment and Plant Design
The distance between the centre of a rivet hole to the nearest edge of the plate is called

Margin
None of these
Back pitch
Pitch

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Process Equipment and Plant Design
The minimum baffle height should be

Equal to the impeller diameter
3/4 of the tank height
Twice the impeller diameter
Twice the tank diameter

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Process Equipment and Plant Design
The ratio of down take area to cross-sectional area of the tube, for calendria type evaporator ranges from

1.5 to 2
1 to 1.5
0.5 to 1
2 to 2.5

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