| Project/Area Number |
23656158
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Thermal engineering
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| Research Institution | Tokyo University of Science, Yamaguchi |
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Principal Investigator |
YUKI Kazuzhisa 山口東京理科大学, 工学部, 准教授 (90302182)
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| Project Period (FY) |
2011 – 2012
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| Project Status |
Completed (Fiscal Year 2012)
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| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2012: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2011: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
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| Keywords | マイクロ / ナノスケール伝熱 / ナノ粒子 / 沸騰伝熱 / 濡れ性 / ポーラス / 冷却 |
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| Research Abstract |
Feasibility of nanoparticles-assembled bi-porous structure on a heating surface is focused on in order to develop a new boiling heat transfer cooling device. This unique porous layer has both a micro/mini-pore structure with high permeability for discharging vapor and nano scale pore structure with a much stronger capillary effect as well as high wettability. It was confirmed that a water droplet intensely boiled and evaporated on a high temperature wall with the nanoparticles bi-porous layer even under Leidenfrost conditions. In addition, the life time of the droplet drastically decreases both in a high temperature and low temperature regimes, which proves that the nanoparticles-assembled bi-porous layer can enhance both heat transfer rate in a nucleate boiling regime and critical heat flux.
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