Modeling of parallel-plate regenerators with non-uniform plate distributions

Jesper Buch Jensen, Kurt Engelbrecht, Christian Robert Haffenden Bahl, Nini Pryds, Gregory F. Nellis, Sanford A. Klein, Brian Elmegaard

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

A two-dimensional finite element model describing the performance of parallel-plate regenerators with arbitrary channel width distributions has been developed in order to investigate the effect of non-uniform plate spacing on the performance of regenerators. Results for a series of hypothetical plate spacing distributions are presented in order to understand the impact of spacing non-uniformity. Simulations of more realistic distributions where the plate spacings follow normal distributions are then discussed in order to describe the deviation of the performance of a regenerator relative to one with uniform spacing as a function of the standard deviation of the plate distribution. It has been shown that the most significant reduction in performance occurs when a volume of fluid between 100% and 200% of the regenerator void volume is displaced in a single blow.
Original languageEnglish
JournalInternational Journal of Heat and Mass Transfer
Volume53
Issue number23-24
Pages (from-to)5065-5072
ISSN0017-9310
DOIs
Publication statusPublished - 2010

Keywords

  • Magnetic refrigeration
  • Fuel Cells and Hydrogen

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