Tube expansion allowances exist in _____________ heat exchanger?
Correct answer: D. U-tube
- A. Multipass fixed tube sheet
- B. None of these
- C. Single pass fixed tube sheet
- D. U-tube
Explanation
U-tube exchangers allow the tubes to expand and contract freely because each tube bends at the U-bend. Fixed-tube-sheet exchangers require other provisions, such as an expansion joint, for significant thermal expansion.
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