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Magnetic Refrigeration with Recycled Permanent Magnets and Free Rare-Earth Magnetocaloric La–Fe–Si

Benke, Dimitri and Fries, Maximilian and Specht, Marius and Wortmann, Jonas and Pabst, Marc and Gottschall, Tino and Radulov, Iliya and Skokov, Konstantin and Bevan, Alex Ivor and Prosperi, Davide and Tudor, Catalina and Afiuny, Peter and Zakotnik, Miha and Gutfleisch, Oliver (2020):
Magnetic Refrigeration with Recycled Permanent Magnets and Free Rare-Earth Magnetocaloric La–Fe–Si.
8, In: Energy Technology, ISSN 2194-4288, 2194-4296,
DOI: 10.25534/tuprints-00013437,
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Item Type: Article
Title: Magnetic Refrigeration with Recycled Permanent Magnets and Free Rare-Earth Magnetocaloric La–Fe–Si
Language: English
Abstract:

Magnetic refrigeration is an upcoming technology that could be an alternative to the more than 100-year-old conventional gas–vapor compression cooling. Magnetic refrigeration might answer some of the global challenges linked with the increasing demands for readily available cooling in almost every region of the world and the global-warming potential of conventional refrigerants. Important issues to be solved are, for example, the required mass and the ecological footprint of the rare-earth permanent magnets and the magnetocaloric material, which are key parts of the magnetic cooling device. The majority of existing demonstrators use Nd–Fe–B permanent magnets, which account for more than 50% of the ecological footprint, and Gd, which is a critical raw material. This work shows a solution to these problems by demonstrating the world’s first magnetocaloric demonstrator that uses recycled Nd–Fe–B magnets as the magnetic field source, and, as a Gd replacement material, La–Fe–Mn–Si for the magnetocaloric heat exchanger. These solutions show that it is possible to reduce the ecological footprint of magnetic cooling devices and provides magnetic cooling as a green solid-state technology that has the potential to satisfy the rapidly growing global demands.

Journal or Publication Title: Energy Technology
Volume: 8
Classification DDC: 500 Naturwissenschaften und Mathematik > 500 Naturwissenschaften
500 Naturwissenschaften und Mathematik > 530 Physik
600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Functional Materials
Date Deposited: 13 Oct 2020 11:56
Last Modified: 13 Oct 2020 13:16
DOI: 10.25534/tuprints-00013437
Related URLs:
URN: urn:nbn:de:tuda-tuprints-134372
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/13437
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