| Project/Area Number |
20K14666
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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 | Nagoya University |
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Principal Investigator |
ファン ビンヌエン 名古屋大学, 工学研究科, 研究員 (20866199)
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| Project Period (FY) |
2020-04-01 – 2021-03-31
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| Project Status |
Discontinued (Fiscal Year 2020)
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| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
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| Keywords | Loop heat pipe / Polytetrafluoroethylene / Melamine foam / Self-adaptive structure / Capillary structure / Self-adaptive / Performance optimization |
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| Outline of Research at the Start |
This work deals with optimization of loop heat pipe heat transfer performance using self-adaptive porous structures as wick. Sufficient pore size for each power leads to smaller pressure drop/better performance. Pore size variation range and efficiency of performance optimization will be clarified.
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| Outline of Annual Research Achievements |
We designed, evaluated performance of the dual-evaporator loop heat pipe (LHP). PTFE membranes were used as wick. Operating characteristics of the LHP in various orientations was clarified. Effect of vapor/liquid distribution in reservoirs on the performance was discussed. One article was published on a high impact journal.
However, the pore size variation range of PTFE wick was limited due to its structure. Melamine foam, a novel material with open foam structure and superhydrophilicity which has not been used so far, was proposed. Pore size of melamine foam was controlled from 215 micron to 18 micron with very small changes in porosity and permeability. The melamine prototype exhibited better performance than the PTFE LHP.
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