Process Equipment and Plant Design
Which tube arrangement in a heat exchanger would facilitate highest heat transfer rate?

Square pitch
Diagonal square pitch
Heat transfer rate is independent of tube arrangement
Triangular pitch

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

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

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