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Process Equipment and Plant Design

Process Equipment and Plant Design
Tube side heat transfer co-efficient for turbulent flow of liquid through tubes is proportional to

G0.5
G0.8
G0.2
G1.5

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Process Equipment and Plant Design
A perforated plate has holes of diameter dh arranged in a pitch ph. Each hole has a tube of I.D. dt passing through it. The ligament efficiency is given by

(ph - dh)/ph
(ph - dh . dt/2)/ph
(ph - dh)/dh
(ph - dt)/ph

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Process Equipment and Plant Design
Tubes are fixed to the tube sheet (a thick circular metallic plate) by the method of tube rolling and brazing (non-removable) or ferrule connection (removable). Thickness of the tube, sheet is normally __________ the outside diameter of the tube but in no case it should be less than 22 mm (7/8").

Half
Equal to
1.5 times
Three fourth

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Process Equipment and Plant Design
__________ closure is the weakest enclosure for cylindrical vessels.

Elliptical
Torispherical
Conical or flat plate
Hemispherical

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Process Equipment and Plant Design
Which of the following factors affect the pressure drop in a co-current gas-liquid absorption packed tower?

Density and viscosity of fluids
All of these
Size, shape, orientation and surface of the packing particles
Fluid flow rates

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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

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

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