Design concepts for a continuously rotating active magnetic regenerator

Christian Robert Haffenden Bahl; Kurt Engelbrecht; Rasmus Bjørk; Dan Eriksen; Anders Smith; Kaspar Kirstein Nielsen; Nini Pryds

doi:10.1016/j.ijrefrig.2011.07.013

Design concepts for a continuously rotating active magnetic regenerator

Christian Robert Haffenden Bahl, Kurt Engelbrecht, Rasmus Bjørk, Dan Eriksen, Anders Smith, Kaspar Kirstein Nielsen, Nini Pryds

Research output: Contribution to journal › Conference article › Research › peer-review

Abstract

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.

Original language	English
Journal	International Journal of Refrigeration
Volume	34
Issue number	8
Pages (from-to)	1792-1796
ISSN	0140-7007
DOIs	https://doi.org/10.1016/j.ijrefrig.2011.07.013
Publication status	Published - Dec 2011
Event	23rd IIR International Congress of Refrigeration - Prague, Czech Republic Duration: 21 Aug 2011 → 26 Aug 2011 Conference number: 23 http://www.icr2011.org/

Conference

Conference	23rd IIR International Congress of Refrigeration
Number	23
Country/Territory	Czech Republic
City	Prague
Period	21/08/2011 → 26/08/2011
Internet address	http://www.icr2011.org/

Keywords

Magnetic refrigeration
Magnet
Design
Optimization
Model

Access to Document

10.1016/j.ijrefrig.2011.07.013

OpenUrl availability

Full text

Cite this

@inproceedings{a77b9c11bb0549d99868a4481ab44e6a,

title = "Design concepts for a continuously rotating active magnetic regenerator",

abstract = "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.",

keywords = "Magnetic refrigeration, Magnet, Design, Optimization, Model, Magnetisk k{\o}ling",

author = "Bahl, {Christian Robert Haffenden} and Kurt Engelbrecht and Rasmus Bj{\o}rk and Dan Eriksen and Anders Smith and Nielsen, {Kaspar Kirstein} and Nini Pryds",

year = "2011",

month = dec,

doi = "10.1016/j.ijrefrig.2011.07.013",

language = "English",

volume = "34",

pages = "1792--1796",

journal = "International Journal of Refrigeration",

issn = "0140-7007",

publisher = "Elsevier",

number = "8",

note = "23rd IIR International Congress of Refrigeration ; Conference date: 21-08-2011 Through 26-08-2011",

url = "http://www.icr2011.org/",

}

TY - GEN

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

N1 - Conference code: 23

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

SN - 0140-7007

VL - 34

SP - 1792

EP - 1796

JO - International Journal of Refrigeration

JF - International Journal of Refrigeration

IS - 8

T2 - 23rd IIR International Congress of Refrigeration

Y2 - 21 August 2011 through 26 August 2011

ER -

Design concepts for a continuously rotating active magnetic regenerator

Abstract

Conference

Keywords

Access to Document

OpenUrl availability

Fingerprint

Cite this