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Effect of lateral fin profiles on stress performance of internally finned tubes in a high temperature heat exchanger

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Author

Summary, in English

The thermal stress of the internally finned bayonet tube used for high temperature heat exchangers is numerically investigated by ANSYS software. Three kinds of lateral fin profiles, namely Z-shape, S-shape and V-shape are studied and compared. The significant temperature gradient and largest Von Mises stress are acquired. The largest stress is still generated in the joint of inner fin and outer tube due to the discontinuous change of the structure. The inner fin and inner tube are proposed to not be welded together to meet the reliability. The Z-shape has the best performance in both heat transfer and reliability, and is recommended for engineering application in high temperature heat exchangers. (C) 2012 Elsevier Ltd. All rights reserved.

Department/s

Publishing year

2013

Language

English

Pages

886-895

Publication/Series

Applied Thermal Engineering

Volume

50

Issue

1

Document type

Journal article

Publisher

Elsevier

Topic

  • Energy Engineering

Keywords

  • High temperature heat exchangers
  • Bayonet tube
  • Inner fin
  • Lateral fin
  • Stress

Status

Published

ISBN/ISSN/Other

  • ISSN: 1359-4311