TY - JOUR

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

A1 - Jensen,Jesper Buch

A1 - Engelbrecht,Kurt

A1 - Bahl,Christian Robert Haffenden

A1 - Pryds,Nini

A1 - Nellis,Gregory F.

A1 - Klein,Sanford A.

A1 - Elmegaard,Brian

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

PB - Pergamon

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

JO - International Journal of Heat and Mass Transfer

JF - International Journal of Heat and Mass Transfer

SN - 0017-9310

IS - 23-24

VL - 53

SP - 5065

EP - 5072

ER -