Which is the best tube arrangement (in a shell and tube heat exchanger) if the fluids are clean and non-fouling ?
Correct answer: B. Triangular pitch
- A. Square pitch
- B. Triangular pitch
- C. Diagonal square pitch
- D. None of these
Explanation
A triangular pitch fits more tubes into a given shell area and gives a higher shell-side heat-transfer coefficient. It is preferred when the fluids are clean because it is more difficult to clean mechanically than a square pitch.
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