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Process Equipment and Plant Design

Process Equipment and Plant Design
In packed towers provided with saddle packing, liquid redistributors are positioned at every __________ times column diameter or 6 metres whichever is less.

43864
44119
43959
20-25

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Process Equipment and Plant Design
Cylindrical storage tanks used for the storage of volatile liquids (e.g., naphtha) have __________ roofs.

Floating
Conical
Flat
Fixed

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Process Equipment and Plant Design
In perforated plate towers, the

Pressure drop is less compared is similar bubble cap towers
Total hole area may be around 6 to 15% of tower cross-sectional area
All of these
Hole sizes may be around 1/8" or 3/16"

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Process Equipment and Plant Design
Commercial packed scrubbers are normally designed for a pressure drop range of __________ mm water coloumn per metre of packed height.

52-68
43929
88-105
17-34

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Process Equipment and Plant Design
__________ of water makes it a widely used coolant in heat exchangers.

High specific heat
Low dirt factor
Low viscosity
Low corrosiveness

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Process Equipment and Plant Design
Friction factor for turbulent flow in a new pipe is given by

f = 0.22 NRe0.05
f = 25/NRe
f = 16/NRe
f = 0.04/NRe0.16

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