0
Research Papers: Design and Analysis

Deflections of A Multipass Shell-and-Tube Heat Exchanger Bolted Joint Subjected to Nonaxisymmetric Thermal Loading

[+] Author and Article Information
Natalia Petrova

Ecole de Technologie Superieure, 1100 Notre-Dame Ouest, Montreal, PQ, H3C 1K3, Canadanataliapetrova@sympatico.ca

Abdel-Hakim Bouzid

Ecole de Technologie Superieure, 1100 Notre-Dame Ouest, Montreal, PQ, H3C 1K3, Canadahakim.bouzid@etsmtl.ca

J. Pressure Vessel Technol 134(1), 011207 (Dec 02, 2011) (9 pages) doi:10.1115/1.4004623 History: Received February 18, 2011; Revised April 26, 2011; Accepted May 02, 2011; Published December 02, 2011; Online December 02, 2011

Despite the fact that multipass shell-and-tube heat exchangers operating at high temperature are subject to frequent problems related to flange sealing, there is neither detailed explanations for the reasons of the failures nor an adequate solution to this problem. Specific geometry of multipass heat exchangers and the temperature difference between the inlet and the outlet fluids is responsible for the existence of a thermal circumferential gradient at the shell-to-channel bolted joint. However, existing flange design methods do not address nonaxisymmetrical temperature loading of the flanged joint assembly. The circumferential thermal gradient, as the cause of frequent failures to seal the flanged joints, is ignored. This paper outlines the analytical modeling of a flanged joint with a tube sheet of a multipass heat exchanger subjected to a nonaxisymmetrical thermal loading. A shell-and-tube heat exchanger of 51 in. diameter with cocurrent flow was used for analysis. The main steps of the theoretical analysis used for the determination of the circumferential temperature profiles and the thermal expansion displacements and distortions of the bolted joint components are given. The results from the proposed analytical model are compared with those obtained from finite element models.

FIGURES IN THIS ARTICLE
<>
Copyright © 2012 by American Society of Mechanical Engineers
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Figure 1

Temperature distribution in a four-pass heat

Grahic Jump Location
Figure 2

Thermal model of shell-to-channel bolted joint

Grahic Jump Location
Figure 3

Flange sector with bolt

Grahic Jump Location
Figure 4

Thermal model of bolt

Grahic Jump Location
Figure 5

Meshed FEM model with bolts

Grahic Jump Location
Figure 6

FEM model with bolts (temperature distribution)

Grahic Jump Location
Figure 7

FEM model with joint elements detached (temperature distribution)

Grahic Jump Location
Figure 8

Temperature distributions of tube and shell fluids

Grahic Jump Location
Figure 9

Temperature distributions in the bolted joint

Grahic Jump Location
Figure 10

Temperature distributions of bolts

Grahic Jump Location
Figure 11

Radial displacements of the channel and shell

Grahic Jump Location
Figure 12

Radial displacements of flange rings

Grahic Jump Location
Figure 13

Radial displacements of hubs

Grahic Jump Location
Figure 14

Hub rotation comparisons

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In