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Process Equipment and Plant Design

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

0.8
0.95
0.55
0.99

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Process Equipment and Plant Design
Normal screwed fittings are used for pipes upto a diameter of __________ inches.

7
3
5
1.5

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Process Equipment and Plant Design
An adequate clearance between the tray and the shell wall of a distillation column is provided to

Allow for thermal expansion and facilitate installation
None of these
Drain the liquid from the tray when the unit is not in operation
Avoid back-trapping

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Process Equipment and Plant Design
A claming section before the liquid flows into the downcomer is privided to

Ensure better vapour-liquid contact
Permit release of entrained vapour in the liquid
Cool the liquid before it flows down
Reduce the discharge fluctuation

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Process Equipment and Plant Design
Where does the maximum tensile strength occur in a thick cylindrical vessel subjected to internal pressure?

At the inner surface
None of these
At the mid thickness of the cylindrical wall
At the outer surface

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Process Equipment and Plant Design
In shell and tube heat exchangers, straight tie rods are used to

Account for thermal strain
Fix the tubes in position
Hold baffle in space
None of these

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