Mass transfer in various hollow fiber geometries

S. R. Wickramasinghe, Michael J. Semmens, E. L. Cussler

Research output: Contribution to journalArticlepeer-review

276 Scopus citations

Abstract

Mass transfer coefficients in commercial modules, including blood oxygenators, agree with literature correlations at high flows but are smaller at low flows. The smaller values at low flows probably result from channelling in the hollow fiber bundle. For the special case of flow within the fibers, the slight polydispersity of the hollow fibers causing this channelling can be used to predict deviation from the Lévêque limit. These deviations can not be predicted from extensions to the Lévêque analysis, or the analysis by Graetz. For the special case of flow outside the fibers, the mass transfer coefficients in commercial modules of various geometries are surprisingly similar, and fall below those of carefully handmade modules. These results can be used to develop still better membrane module designs.

Original languageEnglish (US)
Pages (from-to)235-250
Number of pages16
JournalJournal of Membrane Science
Volume69
Issue number3
DOIs
StatePublished - May 6 1992

Keywords

  • blood oxygenators
  • mass transfer
  • membrane modules

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