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

doi:10.1016/j.ijheatmasstransfer.2010.07.058

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

University of Wisconsin-Madison

Research output: Contribution to journal › Journal article › Research › peer-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 language	English
Journal	International Journal of Heat and Mass Transfer
Volume	53
Issue number	23-24
Pages (from-to)	5065-5072
ISSN	0017-9310
DOIs	https://doi.org/10.1016/j.ijheatmasstransfer.2010.07.058
Publication status	Published - 2010

Keywords

Magnetic refrigeration
Fuel Cells and Hydrogen

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10.1016/j.ijheatmasstransfer.2010.07.058

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title = "Modeling of parallel-plate regenerators with non-uniform plate distributions",

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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author = "Jensen, {Jesper Buch} and Kurt Engelbrecht and Bahl, {Christian Robert Haffenden} and Nini Pryds and Nellis, {Gregory F.} and Klein, {Sanford A.} and Brian Elmegaard",

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T1 - Modeling of parallel-plate regenerators with non-uniform plate distributions

AU - Jensen, Jesper Buch

AU - Engelbrecht, Kurt

AU - Bahl, Christian Robert Haffenden

AU - Pryds, Nini

AU - Nellis, Gregory F.

AU - Klein, Sanford A.

AU - Elmegaard, Brian

PY - 2010

Y1 - 2010

N2 - 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.

AB - 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.

KW - Magnetic refrigeration

KW - Fuel Cells and Hydrogen

KW - Magnetisk køling

KW - Brændselsceller og brint

U2 - 10.1016/j.ijheatmasstransfer.2010.07.058

DO - 10.1016/j.ijheatmasstransfer.2010.07.058

M3 - Journal article

SN - 0017-9310

VL - 53

SP - 5065

EP - 5072

JO - International Journal of Heat and Mass Transfer

JF - International Journal of Heat and Mass Transfer

IS - 23-24

ER -

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

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