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Process Equipment and Plant Design

Process Equipment and Plant Design
The difficulty of liquid distribution in packed towers is accentuated, when the ratio of tower diameter to packing diameter is

> 20 < 50
< 7
> 7 < 15
< 30

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Process Equipment and Plant Design
For given number of passes, pitch & tube diameter, the maximum number of tubes that can be accommodated in a shell of tripled inside diameter will be __________ times.

Considerably more than 9
About 3
About 9
Considerably less than 9

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Process Equipment and Plant Design
The operating pressure drop range in a bag filter is about __________ mm water gauge.

50-150
500-1500
1500-2500
43961

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Process Equipment and Plant Design
Tube side pressure drop in a 1-2 heat exchanger (for turbulent flow of fluids through the tubes) is about __________ times, that in a 1-1 heat exchanger having the same size & number of tubes and operated at the same liquid flow rate.

1/2
8
2
4

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Process Equipment and Plant Design
In case of a 'thin' pressure vessel, the ratio of its diameter to wall thickness is

< 10
> 20
> 10
30

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Process Equipment and Plant Design
For laminar flow (NRe < 2100) in steel pipe, the optimum inside pipe diameter is given by

Di, opt = 3 Q0.36 . ρ1.86 μ0.08
Di, opt = 7.6 Q0.36 . ρ0.9
Di, opt = 3 Q0.36 ρ0.18
Di, opt = 3.9 Q0.45 . ρ0.23

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