2021 Fiscal Year Final Research Report
Numerical modeling of a thermomagnetic motor to extract energy from unused low quality heat source
| Project/Area Number |
19K04139
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Review Section |
Basic Section 18030:Design engineering-related
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| Research Institution | Shinshu University |
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Principal Investigator |
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| Project Period (FY) |
2019-04-01 – 2022-03-31
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| Keywords | 回転機械 / モータ / トルク / 出力 / 熱磁気 / 磁気回路 / 磁場解析 / 温度場解析 |
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| Outline of Final Research Achievements |
In this study, we proposed a thermomagnetic motor that can convert thermal energy into rotational kinetic energy from hot wastewater below 100°C. This device uses the magnetic power of a permanent magnet and a temperature-sensitive magnetic material whose magnetism changes with temperature changes.
First, a new structure model for a thermomagnetic motor was proposed. The numerical model can clarify the rotational behavior under various environments by numerical analysis. We used the finite element method for numerical computation, which enables analysis by coupling multiple physical phenomena. Next, we find out the optimum shape of the magnetic circuit by the topology optimization method and design the shape of the magnetic circuit that can improve the output required to extract energy from the hot wastewater.
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| Free Research Field |
設計工学
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| Academic Significance and Societal Importance of the Research Achievements |
提案した熱磁気モータは，永久磁石の磁気エネルギーと，温度変化によって磁性が変化する感温磁性体の性質を利用し，100 ℃未満の温排水の有する熱エネルギーを回転運動エネルギーに変換できる装置であり，脱炭素社会に向けて，未利用エネルギーを有効活用できる可能性を有する．温度場，磁場，動力学現象の連成解析が行えうる有限要素法を用いて，熱磁気モータの数値モデルを構築できたことにより，さまざまな条件下における動作解析ができ，効率を向上させるための設計が可能となった．
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