Experimental and numerical comparison of multi-layered La(Fe,Si,Mn)13Hy active magnetic regenerators

•Magnetic regenerators based on La(FeSiMn)13Hy with two, five and nine layers were tested.•Experimental and simulation results are in a good agreement for a range of operation.•Five- and nine-layer regenerators established no-load temperature span of 20.9 K.•The highest temperature span for a coolin...

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Veröffentlicht in:International journal of refrigeration Jg. 86; S. 322 - 330
Hauptverfasser: Navickaitė, Kristina, Bez, Henrique Neves, Lei, Tian, Barcza, Alexander, Vieyra, Hugo, Bahl, Christian R.H., Engelbrecht, Kurt
Format: Journal Article
Sprache:Englisch
Veröffentlicht: Elsevier Ltd 01.02.2018
Schlagworte:
Effet magnétocalorique
First order materials
Magnetic cooling
Magnetocaloric effect
Matériaux de premier ordre
Modelling
Modélisation
Refroidissement magnétique
Regeneration
Régénération
First order materials
Regeneration
Régénération
Magnetocaloric effect
Refroidissement magnétique
Matériaux de premier ordre
Modelling
Magnetic cooling
Effet magnétocalorique
Modélisation
ISSN:0140-7007, 1879-2081
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Zusammenfassung:•Magnetic regenerators based on La(FeSiMn)13Hy with two, five and nine layers were tested.•Experimental and simulation results are in a good agreement for a range of operation.•Five- and nine-layer regenerators established no-load temperature span of 20.9 K.•The highest temperature span for a cooling load of 12.4 W/kg was ΔTspan = 19.8 K. We present an experimental and numerical comparison of epoxy bonded multi-layered La(Fe,Si,Mn)13Hy active magnetic regenerators. First, no-load tests were performed on four regenerators with two layers of material and varying amounts of epoxy (from 1 wt% to 4 wt%) in order to find the amount of epoxy necessary to maintain the mechanical integrity of the regenerators. As the second part of the study, experimental results of two regenerators with five and nine layers are compared to predictions from the one-dimensional numerical model. A maximum temperature span, ΔTspan, over 20 K was measured and it is effectively equal for both regenerators. The numerical modelling was generally in good agreement with experimental results.
ISSN:0140-7007
1879-2081
DOI:10.1016/j.ijrefrig.2017.10.032