The purpose of providing expansion bellows in the shell of tubular exchanger is to _____________________?
Correct answer: B. Account for the uneven expansion of shell and tube bundles
- A. Increase the heating load
- B. Account for the uneven expansion of shell and tube bundles
- C. Impart structural strength
- D. Facilitate increase of shell length, if needed
Explanation
Shell and tubes may expand by different amounts when their temperatures differ, producing thermal stress. An expansion bellows absorbs this differential expansion and protects the exchanger from damage.
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