Process Equipment and Plant Design
Of the pressure vessels, with same thickness but different diameters, which one withstands higher pressure?

Smaller dia vessel
Larger dia long vessel
Larger dia vessel
Strength of the vessel is same irrespective of the diameter

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

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

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