Magnetocaloric properties of spheroidal La(Fe,Mn,Si)13H<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline" id="d1e805" altimg="si94.svg"><mml:msub><mml:mrow /><mml:mrow><mml:mi>y</mml:mi></mml:mrow></mml:msub></mml:math> granules and their performance in epoxy-bonded active magnetic regenerators
نویسندگان
چکیده
Magnetic cooling has been researched as an alternative near room-temperature refrigeration technology for the past two decades. However, one of its greatest limitations is lack materials which can be properly shaped optimal thermal-hydraulic performance while maintaining a substantial magnetocaloric effect at moderate fields (i.e., between 1 and 2 T) remaining mechanically (and chemically) stable. In this paper, we thoroughly characterized commercially accessible La(Fe,Mn,Si)13Hy material (available spheroidal granules), in terms properties Active Regenerator (AMR) device. The regenerator bed built from epoxy-bonded particles endured dozens hours operation AMR cycles without any noticeable degradation their mechanical integrity, thanks to comparatively larger α−Fe content granule porosity. As magnetic performance, reached zero-span specific capacities high 300 W kg−1. A 1-D two-temperature approach model predicted data with average deviations smaller than 7% capacity 5% pressure drop.
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ژورنال
عنوان ژورنال: Applied Thermal Engineering
سال: 2021
ISSN: ['1873-5606', '1359-4311']
DOI: https://doi.org/10.1016/j.applthermaleng.2020.116185