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

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Online Research Database In Technology
Keywords
  • Magnetic Refrigeration
  • Fuel Cells And Hydrogen
  • Magnetisk KøLing
  • BræNdselsceller Og Brint
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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.

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