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Process Equipment and Plant Design

Process Equipment and Plant Design
The practical representative values of HETP for a number of commercial operations lies within a range of __________ metre.

0.1-0.2
0.4-0.9
0.2-0.5
1.2-1.5

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

Around 90
Both B and C
Less than that for Tee (used as elbow, entering run)
More than that for Tee (used as elbow, entering run)

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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)/D₂²
(D₂² - D₁²)/D₁²

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Process Equipment and Plant Design
In hydrostatic testing of welded pipe (for leakage, strength etc.) the ratio of minimum hydrostatic test pressure to internal design pressure is around

2.5
1.5
3.5
0.5

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Process Equipment and Plant Design
Floating head heat exchangers are used for the

Counter-current heat transfer systems
Heat transfer between corrosive fluids
Co-current heat transfer systems
Cases where temperature difference between the shell and the tubes is more (>50°C)

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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.

30
35
10
20

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