Berlin 2018 – scientific programme

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 56: Materials for Energy Storage II (joint session KFM/CPP)

CPP 56.4: Talk

Wednesday, March 14, 2018, 16:10–16:30, EMH 025

A green magnetic cooling device built using upcycled NdFeB magnets — •Dimitri Benke¹, Jonas Wortmann¹, Marc Pabst¹, Tino Gottschall², Iliya Radulov¹, Konstantin Skokov¹, Oliver Gutfleisch¹, Davide Prosperi³, Peter Afiuny³, and Miha Zakotnik³ — ¹TU Darmstadt, Darmstadt, Deutschland — ²Helmholtz-Zentrum Dresden-Rossendorf, Rossendorf, Deutschland — ³Urban Mining Company, Austin, USA

Magnetocaloric devices hold the potential to satisfy the rising demand for cooling in the future. One remaining challenge is to reduce the high ecological footprint of the permanent magnets driving the magnetic cooling cycle. Existing devices use neodymium-iron-boron (NdFeB)-type permanent magnets, which account for more than 50% of the ecological footprint of the appliance. To overcome this hurdle, TU Darmstadt and Urban Mining Company have built the first working magnetocaloric device that uses recycled NdFeB as a magnetic field source. Coupling this with optimisation of the magnets and their geometry, it is possible to further reduce the ecological footprint. Together, these two approaches help to position magnetic cooling as a realistic and sustainable cooling technology.