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A spring-assisted linear thermomagnetic conversion system: experimental results.

Numéro : 008

Auteurs : BASTOS M. P. C., MICHEL H. C. C., ROCHA T. T. M., CÂMARA M. A., BRAGA C. M. P., ROWE A., TREVIZOLI P. V.

Résumé

The growing demand for energy requires efficient conversion solutions. Thermomagnetic motors are solid-state energy harvesters able to convert low-grade heat wastes into mechanical energy, potentially increasing system efficiency. This work presents advances on the previous version of a linear thermomagnetic system prototype assisted by a spring mechanism. The experimental setup features a Halbach magnetic circuit, with a maximum magnetic field of 1.35 T. A 54 g packed bed of Gd spheres with 0.5 mm diameter is used as thermomagnetic material. The linear motion, driven by the interaction between magnetic and elastic forces, converts thermal energy into mechanical work. Novel experimental results reached maximum output powers of 5.83 W, 9.04 W and 9.09 W, respectively, at the heat source temperature of 35°C, 40°C and 45°C, while the heat sink is at 5°C. The maximum frequency is 1.67 Hz. These results offer promising insights for potential application in heat recovery systems.
 

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Format PDF

Pages : 10 p.

Disponible

  • Prix public

    20 €

  • Prix membre*

    15 €

* meilleur tarif applicable selon le type d'adhésion (voir le détail des avantages des adhésions individuelles et collectives)

Détails

  • Titre original : A spring-assisted linear thermomagnetic conversion system: experimental results.
  • Identifiant de la fiche : 30035052
  • Langues : Anglais
  • Sujet : Technologie
  • Source : 11th IIR Conference on Solid-State Cooling, Heating and Energy Harvesting.
  • Date d'édition : 07/06/2026
  • DOI : http://dx.doi.org/10.18462/iir.thermag.2026.0008

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