Design concepts for a continuously rotating active magnetic regenerator

Publication: Research - peer-reviewConference article – Annual report year: 2011

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@article{a77b9c11bb0549d99868a4481ab44e6a,
title = "Design concepts for a continuously rotating active magnetic regenerator",
keywords = "Magnetic refrigeration, Magnet, Design, Optimization, Model, Magnetisk køling",
author = "Bahl, {Christian Robert Haffenden} and Kurt Engelbrecht and Rasmus Bjørk and Dan Eriksen and Anders Smith and Nielsen, {Kaspar Kirstein} and Nini Pryds",
year = "2011",
month = "12",
doi = "10.1016/j.ijrefrig.2011.07.013",
volume = "34",
pages = "1792--1796",
journal = "International Journal of Refrigeration",
issn = "0140-7007",
publisher = "Elsevier Ltd.",
number = "8",

}

RIS

TY - CONF

T1 - Design concepts for a continuously rotating active magnetic regenerator

AU - Bahl,Christian Robert Haffenden

AU - Engelbrecht,Kurt

AU - Bjørk,Rasmus

AU - Eriksen,Dan

AU - Smith,Anders

AU - Nielsen,Kaspar Kirstein

AU - Pryds,Nini

PY - 2011/12

Y1 - 2011/12

N2 - Design considerations for a prototype magnetic refrigeration device with a continuously rotating AMR are presented. Building the active magnetic regenerator (AMR) from stacks of elongated plates of the perovskite oxide material La0.67Ca0.33−xSrxMn1.05O3, gives both a low pressure drop and allows grading of the Curie temperature along the plates. This may be accomplished by a novel technique where a compositionally-graded material is tape cast in one piece. The magnet assembly is based on a novel design strategy, to create alternating high- and low magnetic field regions within a magnet assembly. Focus is on maximising the magnetic field in the high field regions but also, importantly, minimising the flux in the low field regions. The design is iteratively optimised through 3D finite element magnetostatic modelling.

AB - Design considerations for a prototype magnetic refrigeration device with a continuously rotating AMR are presented. Building the active magnetic regenerator (AMR) from stacks of elongated plates of the perovskite oxide material La0.67Ca0.33−xSrxMn1.05O3, gives both a low pressure drop and allows grading of the Curie temperature along the plates. This may be accomplished by a novel technique where a compositionally-graded material is tape cast in one piece. The magnet assembly is based on a novel design strategy, to create alternating high- and low magnetic field regions within a magnet assembly. Focus is on maximising the magnetic field in the high field regions but also, importantly, minimising the flux in the low field regions. The design is iteratively optimised through 3D finite element magnetostatic modelling.

KW - Magnetic refrigeration

KW - Magnet

KW - Design

KW - Optimization

KW - Model

KW - Magnetisk køling

U2 - 10.1016/j.ijrefrig.2011.07.013

DO - 10.1016/j.ijrefrig.2011.07.013

M3 - Conference article

VL - 34

SP - 1792

EP - 1796

JO - International Journal of Refrigeration

T2 - International Journal of Refrigeration

JF - International Journal of Refrigeration

SN - 0140-7007

IS - 8

ER -