Abstract

Based on the unified theory of tubesheet (TS) design for fixed TS heat exchangers (HEXs), floating head and U-tube HEXs presented in Part I and Part II, theoretical and numerical comparisons with ASME method are performed in this paper as Part III. Theoretical comparisons show that ASME method can be obtained from the special case of the simplified mechanical model of the unified theory. Numerical Comparison results indicate that predictions given by the unified theory agree well with finite element analysis (FEA), while ASME results are not accurate or not correct. Numerical comparisons also indicate that ASME results of TS stresses are not always conservative and may lead to unsafety design.

Issue Section:
Design and Analysis
Topics:
Design, Finite element analysis, Heat exchangers, Shells, Stress, Unified field theories, Membranes, Temperature gradient, Pressure

References

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The Unified Theory of Tubesheet Design—Part I: Theoretical Foundation
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