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Process Equipment and Plant Design

Process Equipment and Plant Design
In case of a shell and tube heat exchanger, the effect of L/D on inside film heat transfer co-efficient (hi) vanishes after a Reynold number of

3000
5000
1000
10000

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

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

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Process Equipment and Plant Design
The wall thickness of thin cylindrical shell with hemispherical ends is __________ that of the spherical ends.

Either B or C; depends on maximum permissible internal pressure
More than
Equal to
Less than

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Process Equipment and Plant Design
Excessive liquid gradient on a tray may result in the

All of these
Back trapping
Maldistribution of gas
Gas blowing beneath cap skit

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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
About 3 times
Less

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Process Equipment and Plant Design
In distillation columns, bubble caps are held in place over trays by

A hold down bar
Rivets
Both B and C
Bolts

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