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Process Equipment and Plant Design

Process Equipment and Plant Design
Le/D for 90° elbow (medium radius) and 90°square elbow would be respectively around

25 and 60
100 and 250
3 and 5
250 and 600

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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

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

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Process Equipment and Plant Design
Le/D for fully open globe value may be around

75
10
25
300

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Process Equipment and Plant Design
In inclined long tube vertical evaporators, the tubes are inclined at an angle of

90°
15°
60°
45°

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Process Equipment and Plant Design
Factor of safety (i.e., overdesign factor) in heat transfer equipments is about __________ percent more than the actual/theoretical design factor.

30-35
43961
35-40
15-20

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Process Equipment and Plant Design
The clearance between two tubes in a shell and tube heat exchanger is known as 'ligament', whose minimum value is __________ the outside diameter of the tube, but in no case it should be less than 4.5 mm.

Half
One fourth
Three fourth
Equal to

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