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Research Papers: Design and Analysis

A Unified Analytical Method of Stress Analysis for Tubesheet—Part II: Case Study

[+] Author and Article Information
Hongsong Zhu

ShiDa ErCun, Putuo District,
Shanghai 200062, China
e-mail: Hongsongzhu@126.com

Contributed by the Pressure Vessel and Piping Division of ASME for publication in the JOURNAL OF PRESSURE VESSEL TECHNOLOGY. Manuscript received February 17, 2017; final manuscript received November 13, 2017; published online February 5, 2018. Assoc. Editor: Hardayal S. Mehta.

J. Pressure Vessel Technol 140(2), 021202 (Feb 05, 2018) (10 pages) Paper No: PVT-17-1035; doi: 10.1115/1.4038655 History: Received February 17, 2017; Revised November 13, 2017

Based on the unified analytical method of stress analysis for fixed tubesheet (TS) heat exchangers (HEX), floating head and U-tube HEX presented in Part I, numerical comparisons with ASME method are performed in this paper as Part II. Numerical comparison results indicate that predictions given by the unified method agree well with finite element analysis (FEA), while ASME results are not accurate or not correct. Therefore, it is concluded that the unified method deals with thin TS of different types of HEX in equal detail with confidence to predict design stresses.

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References

ASME, 2013, “ASME Section VIII—Division 1 Example Problem Manual,” American Society of Mechanical Engineers, New York, Standard No. PTB-4-2013.
Osweiller, F. , 2014, “Criteria for Shell-and-Tube Heat Exchangers According to Part UHX of ASME Section VIII Division 1,” American Society of Mechanical Engineers, New York, pp. 93–94.
Gardner, K. A. , 1948, “ Heat Exchanger Tubesheet Design,” ASME J. Appl. Mech., 15(4), pp. 377–385.
Osweiller, F. , 1989, “ Evolution and Synthesis of the Effective Elastic Constants Concept for the Design of Tubesheets,” ASME J. Pressure Vessel Technol., 111(3), pp. 209–217. [CrossRef]
ASME, 2015, “Section VIII—Division 1-2015,” ASME Code, American Society of Mechanical Engineers, New York.
Sampson, 1960, “Photoelastic Analysis in Perforated Material Subject to Tension or Bending,” Bettis Technical Review, Washington, DC, Report No. WAPD BT 18.
Meijers, P. , and van der Heijen, A. M. A. , 1980, “Refined Theory for Bending of Perforated Plates,” Laboratorium voor technische mechanica, Delft University of Technology, Delft, The Netherlands, Report No. 198109.

Figures

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Fig. 1

Comparison of TS radial membrane and bending stress for fixed TS HEX

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Fig. 2

Comparison of TS radial stress for fixed TS HEX

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Fig. 3

Comparison of tube axial stress for fixed TS HEX

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Fig. 4

Comparison of TS radial stress for immersed floating HEX

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Fig. 5

Comparison of tube axial stress for immersed floating HEX

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Fig. 6

Comparison of TS radial stress for externally sealed floating TS HEX

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Fig. 7

Comparison of tube axial stress for externally sealed floating TS HEX

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Fig. 8

Comparison of TS radial stress for Internally Sealed Floating TS HEX

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Fig. 9

Comparison of tube axial stress for internally sealed floating TS HEX

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Fig. 10

Comparison of TS radial stress for U-tube HEX

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Fig. 11

Comparison of TS radial stress for fixed TS HEX not considering gravity

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Fig. 18

Comparison of fixed TS radial stress considering pressure effects in TS perforations

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Fig. 17

Comparison of Floating TS radial stress considering pressure effects in TS perforations

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Fig. 20

Shell gasketed with TS

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Fig. 16

Comparison of tube axial stress considering temperature gradient in TSs only

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Fig. 15

Comparison of TS radial stress considering temperature gradient in TSs only

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Fig. 14

Comparison of tube axial stress for vertically mounted fixed TS HEX

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Fig. 13

Comparison of TS radial stress for vertically mounted fixed TS HEX

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Fig. 12

Comparison of tube axial stress for fixed TS HEX not considering gravity

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Fig. 19

Tubesheet lap joint with flange ring and gasketed with channel

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