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Summary
This article presents a new magnetic refrigeration prototype that operates with a rare-earth-free magnetic field source. Its main novelty, in comparison to existing state-of-the-art magnetic prototypes, is the application of a static electromagnet assembly that can regenerate magnetic energy and enables a rapid alternation of the magnetic field, which is one of the crucial operating parameters that could lead towards the future miniaturization of magnetocaloric devices. The presented prototype consists of two electromagnetic assemblies, each containing a packed-bed active magnetic regenerator (AMR) that consists of 30 g of single-layered Gd magnetocaloric material (MCM) in the form of spheres. The prototype was experimentally tested for its performance in terms of temperature span and cooling power. For instance, operating with a single-layered Gd AMR at 4-Hz operating frequency, the prototype produced 114 Wkg-1 of specific cooling power (per MCM mass), while maintaining a temperature span of 5 K below ambient conditions.
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Details
- Original title: A magnetic refrigeration prototype operating with a rare-earth-free magnetic field source.
- Record ID : 30026033
- Languages: English
- Source: Proceedings of the 25th IIR International Congress of Refrigeration: Montréal , Canada, August 24-30, 2019.
- Publication date: 2019/08/24
- DOI: http://dx.doi.org/10.18462/iir.icr.2019.0773
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Magnetocaloric refrigeration and heat pumping: ...
- Author(s) : KITANOVSKI A., KLINAR K., TOMC U.
- Date : 2019/08/24
- Languages : English
- Source: Proceedings of the 25th IIR International Congress of Refrigeration: Montréal , Canada, August 24-30, 2019.
- Formats : PDF
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A comparison between rare earth and transition ...
- Author(s) : APREA C., GRECO A., MAIORINO A., et al.
- Date : 2015/12/05
- Languages : English
- Source: Applied Thermal Engineering - vol. 91
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DRREAM: reducing rare earth use in magnetocalor...
- Author(s) : SANDEMAN K. G.
- Date : 2014/09/07
- Languages : English
- Source: 6th International Conference on Magnetic Refrigeration at Room Temperature (Thermag VI). Proceedings: Victoria, Canada, September 7-10, 2014.
- Formats : PDF
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Demagnetizing fields in active magnetic regener...
- Author(s) : NIELSEN K. K., BAHL C. R. H., SMITH A.
- Date : 2014/09/07
- Languages : English
- Source: 6th International Conference on Magnetic Refrigeration at Room Temperature (Thermag VI). Proceedings: Victoria, Canada, September 7-10, 2014.
- Formats : PDF
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Magnetocaloric effect in Ho(y)Er(1-y)N.
- Author(s) : RANKE P. J. von, ALVARENGA T. S. T., ALHO B. P., et al.
- Date : 2012/09/17
- Languages : English
- Source: 5th International Conference on Magnetic Refrigeration at Room Temperature (Thermag V). Proceedings: Grenoble, France, September 17-20, 2012.
- Formats : PDF
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