撥水性多孔質を通過する凝縮流の素過程理解に基づくループヒートパイプ凝縮器の機能化
| Project/Area Number |
18J15506
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| Research Category |
Grant-in-Aid for JSPS Fellows
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| Allocation Type | Single-year Grants |
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| Section | 国内 |
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| Research Field |
Aerospace engineering
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| Research Institution | Tohoku University (2019-2020)
Nagoya University (2018) |
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| Research Fellow |
常 新雨 東北大学, 流体科学研究所, 特別研究員(PD)
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| Project Period (FY) |
2018-04-25 – 2021-03-31
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| Project Status |
Completed (Fiscal Year 2020)
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| Budget Amount *help |
¥1,500,000 (Direct Cost: ¥1,500,000)
Fiscal Year 2019: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 2018: ¥800,000 (Direct Cost: ¥800,000)
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| Keywords | loop heat pipe / boiling and condensation / visualization / two-phase flow / Multi-loop heat pipes / Visualization / Condensation and boiling / Gravitational head / Two-phase flow region |
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| Outline of Annual Research Achievements |
In this year’s 2-month extension period for last year’s work, based on previous visualization tests, the condensation phenomena of multi-evaporator loop heat pipe (MLHP) were investigated. Several mathematical models for predicting the condensation phenomena were used to confirm the MLHP's condensation behavior. The heat transfer coefficient, the lengths of the superheated vapor region, two-phase flow region and the subcooled liquid region were studied. This work will contribute to the optimal design for MLHP's condenser used in future spacecraft. After confirming the MLHP's condensation behavior, the applicant used this knowledge to improve the heat transfer technology in different fields. In space use, the applicant designed the cryogenic loop heat pipe (CLHP) for cooling machines working in cryogenic temperature range. A CLHP was developed with the working fluid nitrogen, the operating temperature range of 80-110 K and more than 10 W heat transfer capability for 2 m heat transport distance. Demonstration tests will be conducted in the future. In ground use, the applicant designed the two-phase mechanically pumped fluid loop system. A two-phase mechanically pumped fluid loop system that can cooling different heat sources was designed for cooling the future large capacity heat generation system, such as the electric airplane. The achievements in this research will be summarized as journal articles and conference papers.
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| Research Progress Status |
令和2年度が最終年度であるため、記入しない。
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| Strategy for Future Research Activity |
令和2年度が最終年度であるため、記入しない。
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Report
(3 results)
Research Products
(8 results)
