_____________ heat exchanger is the most suitable, when the temperature of shell side fluid is much higher than that of tube side?
Correct answer: D. U-tube
- A. Single pass, fixed tube sheet
- B. None of these
- C. Three pass, fixed tube sheet
- D. U-tube
Explanation
A U-tube exchanger permits the tubes to expand freely when the shell-side fluid is much hotter, avoiding large thermal stresses between shell and tubes. Fixed-tube-sheet designs are less suitable because differential expansion can damage the exchanger.
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