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Mechanical and magnetic optimization of a magneto-thermoelectric generator for thermal energy harvesting

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Abstract

We use a physical model to optimize the mechanical and magnetic properties of a magneto-thermoelectric generator (MTG) device to improve its performance. The key to the MTG device designed for thermal energy harvesting is the use of the ferromagnetic–paramagnetic transition of Gd metal induced by a temperature difference between two heat sources. To increase the heat transfer between the Gd and the heat sources, a clamped and simply supported beam structure is proposed as an alternative to cantilevers. For the mechanical and magnetic optimization of the proposed structure, a physics model is used to develop theoretical predictions. Experiments confirmed that the MTG device operates within the predicted range.

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Acknowledgements

This work was supported by the National Research Foundation (NRF) funded by the Ministry of Education of Korea (2018R1D1A1B07044873) and by 2017 sabbatical year research grant of the Korea Polytechnic University.

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Authors and Affiliations

  1. Department of Energy and Electrical Engineering, Korea Polytechnic University, Gyeonggi, 15073, Korea

    Dong-Gun Lee

  2. Department of Physics, Soongsil University, Seoul, 06978, Korea

    Yun Cheol Kim & Dong Ryeol Lee

Authors
  1. Dong-Gun Lee
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  2. Yun Cheol Kim
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  3. Dong Ryeol Lee
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Correspondence to Dong-Gun Lee or Dong Ryeol Lee.

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Lee, DG., Kim, Y.C. & Lee, D.R. Mechanical and magnetic optimization of a magneto-thermoelectric generator for thermal energy harvesting. J. Korean Phys. Soc. 78, 723–728 (2021). https://doi.org/10.1007/s40042-021-00138-7

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  • DOI: https://doi.org/10.1007/s40042-021-00138-7

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