2020 Fiscal Year Final Research Report
Elucidation of solidification behavior and solidification heat transfer characteristics of an ice slurry as a heating medium in the low temperature range
| Project/Area Number |
19K14913
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| Research Category |
Grant-in-Aid for Early-Career Scientists
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| Allocation Type | Multi-year Fund |
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| Review Section |
Basic Section 19020:Thermal engineering-related
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| Research Institution | Aoyama Gakuin University |
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Principal Investigator |
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| Project Period (FY) |
2019-04-01 – 2021-03-31
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| Keywords | 氷スラリー / 凝固 / 凍結 / 熱伝達 / 固液二相流 / ステファン解 |
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| Outline of Final Research Achievements |
In this study, the heat transfer characteristics and freezing behavior of ice slurries, which are expected to be used as a highly efficient heating medium were investigated experimentally. From the experimental results, it was found that the ice slurry has excellent heat exchange performance not only when it is heated but also when it is cooled. On the other hand, it was also found that ice slurries promote the growth of the frozen layer, which is a factor of heat transfer inhibition. Therefore, in order to use the ice slurry as a heating medium, it is necessary to suppress the formation or growth of the frozen layer.
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| Free Research Field |
熱工学
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| Academic Significance and Societal Importance of the Research Achievements |
これまで明らかにされていなかった，固液二相流における凍結層の成長に及ぼす分散質の影響を明らかにすることができた．これは今後，固液二相流の凍結現象を扱う上で重要な知見となる．また，氷スラリーを冷却した場合における伝熱特性を定量的に明らかにし，水等の単相流体と比べて熱伝達性能に優れることを確認した．これにより，氷スラリーを加熱用媒体として応用することの優位性を示すことができたため，氷スラリーの応用分野の拡大が期待できる．
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