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Process Equipment and Plant Design

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

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

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Process Equipment and Plant Design
Correct use of 'factor of safety' is very important in equipment design. It is defined as the ratio of the

Working stress to ultimate stress
Ultimate stress to breaking stress
None of these
Ultimate stress to working stress

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Process Equipment and Plant Design
If 'D' is the inside diameter of the shell of a shell and tube heat exchanger, then the baffle spacing is usually in the range of

D/5 or minimum 2" to 5D
None of these
D/5 or minimum 2" to D
D/2 or minimum 2" to 5D

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Process Equipment and Plant Design
With increase in the number of shell passes, the value of FT

Decreases
Remains same
Remains same, only if the number of tube passes does not change
Increases

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Process Equipment and Plant Design
The average velocity in the tubes of a 1-4 heat exchanger is __________ times that in 1-1 heat exchanger having the same size & number of tubes and operated at same liquid flow rate.

43834
43832
4
2

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Process Equipment and Plant Design
The safe distance of habitation from a hazardous chemical plant (TLV of its product < 1000 ppm) should be about __________ kms.

15
5
1
25

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