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Meeting 2024 TMS Annual Meeting & Exhibition
Symposium Advanced Soft Magnets and Magnetocaloric Materials: An FMD Symposium in Honor of Victorino Franco
Presentation Title High-Performance Thermomagnetic Generator Controlled by a Magnetocaloric Switch
Author(s) Hu Zhang, Xianliang Liu, Haodong Chen, Jianyi Huang, Kaiming Qiao, Ziyuan Yu, Longlong Xie, Raju V. Ramanujan, Fengxia Hu, Ke Chu, Yi Long
On-Site Speaker (Planned) Hu Zhang
Abstract Scope Low grade waste heat accounts for ~65% of total waste heat, but conventional waste heat recovery technology exhibits low conversion efficiency. Hence, we designed a thermomagnetic generator for such applications. Unlike its usual role as the coil core or big magnetic yoke in previous thermomagnetic generators, the magnetocaloric material acts as a switch that controls the magnetic circuit. This makes it not only have the advantage of flux reversal of the pretzel-like topology, but also present a simpler design, lower magnetic stray field, and higher thermomagnetic generator performance by using less magnetocaloric material than pretzel-like topology. The optimized max power density PDmax produced by our thermomagnetic generator is not only significantly higher than those of other active thermomagnetic generators, but also higher than those of thermoelectric generator and pyroelectric generator. Such high thermomagnetic generator performance proves the effectiveness of our topology design of magnetic circuit with magnetocaloric switch.
Proceedings Inclusion? Planned:
Keywords Magnetic Materials, Energy Conversion and Storage, Phase Transformations


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