Process Equipment and Plant Design
In a shell and tube heat exchanger, the clearance of the tube is generally

Equal to the tube diameter
More in case of triangular pitch as compared to the square pitch tube layout
Not less than one-fourth of the tube diameter or 3/16"
More than the tube diameter

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Process Equipment and Plant Design
Pick out the wrong statement pertaining to the design of a long tube vertical evaporator.

Tube dia is 3-6 cms, while tube length in 3-6 metres
None of these
Liquor level is maintained at l/3rd to 1/2 of the height of the tube
Steam is fed to the shell, whereas the liquor is filled inside the tube

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