2021 Fiscal Year Final Research Report
Study on Solid-Liquid Phase Change Mechanism in Fine Space
| Project/Area Number |
19H02498
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Review Section |
Basic Section 27010:Transport phenomena and unit operations-related
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| Research Institution | Kobe University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
日出間 るり 神戸大学, 工学研究科, 准教授 (20598172)
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| Project Period (FY) |
2019-04-01 – 2022-03-31
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| Keywords | 相変化 / 硬殻マイクロカプセル / マイクロ流路 / 蓄熱 / 過冷却 |
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| Outline of Final Research Achievements |
In order to investigate the mechanism of super-cooling disappearance of phase change materials in silica hard-shell microcapsules, an experimental study has been performed based on three hypotheses; inverse Gibbs-Thomson effect, heterogeneous structure of water molecule and bubble nucleation.
From the results, the water molecules forms the heterogenous structure in the capsules was found to occur in the capsules. Thus, the hydrate number locally decreased and the freezing point increased. This is the primary mechanism on the super-cooling disappearance.
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| Free Research Field |
潜熱工学
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| Academic Significance and Societal Importance of the Research Achievements |
シリカ硬殻マイクロカプセル内における過冷却解消現象のメカニズムを初めて明らかにした．
また，この知見によって，蓄熱利用技術で最大の問題となっている過冷却現象を解決する新たな技術開発が可能となり，カーボンニュートラルに向けた高度熱マネージメントシステムの開発が飛躍的に進むと期待される．
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