In a shell and tube heat exchanger, the clearance of the tube is generally___________________?
Correct answer: C. Not less than one-fourth of the tube diameter or 3/16″
- A. Equal to the tube diameter
- B. More than the tube diameter
- C. Not less than one-fourth of the tube diameter or 3/16″
- D. More in case of triangular pitch as compared to the square pitch tube layout
Explanation
Tube layout requires sufficient clearance for fabrication, cleaning, and fluid flow, generally at least one-fourth of the tube diameter or 3/16 inch. Triangular pitch normally gives a smaller, not larger, clearance than square pitch.
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