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Process Equipment and Plant Design

Process Equipment and Plant Design
The maximum liquid gradient over a tray must not exceed

0.5" -1.25"
5"
2"-3.5"
Half the tray spacing

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Process Equipment and Plant Design
The thickness of heat transfer plates used in the plate type heat exchanger ranges from __________ mm, pressed in a single piece provided with grooves & corrugations.

0.3 to 0.8
1.25 to 3.125
44055
3.5 to 7.0

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Process Equipment and Plant Design
__________ shapedroof is the most commonly used roof for cylinderical storage tanks.

Umbrella
Flat
Conical
Dome

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Process Equipment and Plant Design
Column support for the roof of cylindrical storage tank must be provided for

Large diameter tanks
All of these
Small diameter tanks
Small diameter tall tanks

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Process Equipment and Plant Design
In a shell and tube heat exchanger, the shortest centre to centre distance between the adjacent tubes is

Called tube clearance
Always less than the diameter of the tube
Called tube pitch
None of these

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

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