The influence of demagnetizing effects on the performance of active magnetic regenerators

Publication: Research - peer-reviewJournal article – Annual report year: 2012

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@article{de862d076d76487d9f767b2db576adb2,
title = "The influence of demagnetizing effects on the performance of active magnetic regenerators",
publisher = "American Institute of Physics",
author = "Nielsen, {Kaspar Kirstein} and Anders Smith and Christian Bahl and Olsen, {Ulrik Lund}",
year = "2012",
doi = "10.1063/1.4764039",
volume = "112",
pages = "094905",
journal = "Journal of Applied Physics",
issn = "0021-8979",

}

RIS

TY - JOUR

T1 - The influence of demagnetizing effects on the performance of active magnetic regenerators

A1 - Nielsen,Kaspar Kirstein

A1 - Smith,Anders

A1 - Bahl,Christian

A1 - Olsen,Ulrik Lund

AU - Nielsen,Kaspar Kirstein

AU - Smith,Anders

AU - Bahl,Christian

AU - Olsen,Ulrik Lund

PB - American Institute of Physics

PY - 2012

Y1 - 2012

N2 - Active magnetic regenerators (AMR) comprise an involved, multi-physics problem including heat transfer, fluid flow, magnetocaloric properties and demagnetizing fields. In this paper a method is developed that combines previously published models that simulate a parallel-plate AMR and the magnetostatics of a stack of parallel plates, respectively. Such a coupling is non-trivial due to the significant increase in computational time and a simplified scheme is thus developed and validated resulting in little extra computational effort needed.<br/>A range of geometrical and operating parameters are varied and the results show that not only do demagnetizing effects have a significant impact on the AMR performance, but the magnitude of the effect is very sensitive to a range of parameters such as stack geometry (number of plates, dimensions of the plates and flow channels and overall dimensions of the stack), orientation of the applied field and the operating conditions of the AMR (such as thermal utilization).

AB - Active magnetic regenerators (AMR) comprise an involved, multi-physics problem including heat transfer, fluid flow, magnetocaloric properties and demagnetizing fields. In this paper a method is developed that combines previously published models that simulate a parallel-plate AMR and the magnetostatics of a stack of parallel plates, respectively. Such a coupling is non-trivial due to the significant increase in computational time and a simplified scheme is thus developed and validated resulting in little extra computational effort needed.<br/>A range of geometrical and operating parameters are varied and the results show that not only do demagnetizing effects have a significant impact on the AMR performance, but the magnitude of the effect is very sensitive to a range of parameters such as stack geometry (number of plates, dimensions of the plates and flow channels and overall dimensions of the stack), orientation of the applied field and the operating conditions of the AMR (such as thermal utilization).

U2 - 10.1063/1.4764039

DO - 10.1063/1.4764039

JO - Journal of Applied Physics

JF - Journal of Applied Physics

SN - 0021-8979

VL - 112

SP - 094905

ER -