Question:medium

Expansion bellows are provided in the shell and tube heat exchangers in order to

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Structural guidelines for heat exchangers: - Fixed Tubesheet Exchangers: Low cost, but require an expansion bellow on the shell if the temperature differential between tube and shell exceeds roughly \(50^\circ\text{C}\). - Floating Head Exchangers: Alternative design where one tubesheet is left free to move axially, completely avoiding thermal expansion stresses without needing shell bellows.

Updated On: Jul 9, 2026

Increase the surface area
Relieve stresses caused by thermal expansion
Increase the turbulence
Reduce the pressure drop

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The Correct Option is B

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