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Process Equipment and Plant Design

Process Equipment and Plant Design
For identical operating conditions, the pressure drop over __________ tray is the highest out of the following.

Sieve
Bubble cap
Valve
Counterflow

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Process Equipment and Plant Design
Joint efficiency (J) for a seamless pipe is

< 0.5
1
1.2
0.85

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Process Equipment and Plant Design
For annular flow of a fluid, the ratio of the equivalent diameter for pressure drop calculation to the equivalent diameter for heat transfer calculation is

(d1 + d2)/d2
D2/(d1 + d2)
(d1 + d2)/d1
D1/(d1 + d2)

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Process Equipment and Plant Design
Normally, the plate thickness of the bottoms and roofs of vertically cylindrical storage vessels as compared to that of the cylindrical shell is

Less
Same
More or less depending upon the pressure & temperature inside the vessel and the nature of the fluid contained therein
More

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

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

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Process Equipment and Plant Design
Height of the flights in the rotary drier is in the range of

0.02 to 0.05 d
0.2 to 0.5 d
0.5 to 0.6 d
0.08 to 0.12 d

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