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Process Equipment and Plant Design

Process Equipment and Plant Design
Normally, the ratio of the total riser area to the tower cross sectional area (for bubble cap towers of diameter more than 3 ft) is around

0.55-0.85
0.4-0.6
0.35-0.75
0.1-0.2

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Process Equipment and Plant Design
At equal mass velocities, the values of film co-efficients for gases as compared to that for liquids are generally.

Higher
Same
Lower
Unpredictable

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

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Process Equipment and Plant Design
Heat transfer co-efficient for a horizontal condenser as compared to a vertical condenser operating under similar conditions is

Same
About 0.33 times
Less
About 3 times

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

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

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Process Equipment and Plant Design
In a heat exchanger, shell side fluid velocity can be changed by changing the tube

Both A & B
Neither A nor B
Pitch
Layout

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