On the examination of recycle on heat (and mass) transfer in concentric tubes

Ho‐Ming ‐M Yeh*, Shau‐Wei ‐W Tsai, Mean‐Chu ‐C Hsiey

*Corresponding author for this work

Research output: Contribution to journalJournal Article peer-review

3 Scopus citations

Abstract

The effect of recycle on heat (and mass) transfer in concentric circular tubes has been investigated by finite difference methods. Theoretical results show that recycle can enhance the heat transfer rate for large Graetz numbers compared with that in an open tube (without an inner tube inserted and without recycle). Competition between a preheating effect and a residence‐time effect can be used to explain the heat transfer behavior. The heat transfer rate can be further augmented, with nearly no increase in total pressure drop, by employing flow pattern B instead of flow pattern A.

Original languageEnglish
Pages (from-to)258-262
Number of pages5
JournalThe Canadian Journal of Chemical Engineering
Volume66
Issue number2
DOIs
StatePublished - 04 1988
Externally publishedYes

Keywords

  • Graetz problem
  • concentric tube heat transfer
  • heat transfer with recycle

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