Development of Rapid Cooling Method Using Wetting Improvement by Plasma Irradiation
利用等离子体辐射改善润湿的快速冷却方法的开发
基本信息
- 批准号:14350109
- 负责人:
- 金额:$ 9.47万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (B)
- 财政年份:2002
- 资助国家:日本
- 起止时间:2002 至 2004
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
The purpose of this research project is to develop an enhanced cooling method making use of plasma irradiation which enhances surface wattability of various solid surfaces.Three metals, aluminum, copper and stainless steel were selected as the test materials. First, the following were investigated experimentally to understand the fundamental characteristics and relationship between plasma irradiation and surface wettablity ;(1)change in contact angle with irradiation time of plasma.(2)Recovery process of surfaces from hydrophilic state to hydrophobic state, namely, relationship between contact angle and elapsed time after termination of irradiation.As a result, it was turned out that aluminum was the best among three metals. The contact angle of aluminum decreased to nearly zero, while the terminal contact angles of copper and stainless steel during irradiation were nearly 10 degree. In case of aluminum, special treatment has also been done on its surface to have a fractal surface structure. This surface initially had a superhydrophilic nature, but it gradually changed and finally became super-water-repellent.In order to know the cooling ability, experiments of water drop evaporation using above surfaces have conducted and the following results were obtained ;(1)When the surface temperature was 50 degree C, evaporation time of water drop depended on contact angle. By the decrease in contact angle, evaporation time was drastically decreased and the evaporation was enhanced by the improvement of surface wettablity.(2)The wetting limit temperature increased with the decrease in contact angle. In case of aluminum and copper, the wetting limit temperature increased by 45K by the plasma irradiation.It was found that the wetting improvement by plasma irradiation was one of the promising methods of rapid cooling technique.
本研究的目的是开发一种利用等离子体辐照的强化冷却方法,以提高各种固体表面的表面瓦特率,选择三种金属,铝,铜和不锈钢作为试验材料。首先,通过实验研究了等离子体辐照与表面润湿性之间的基本特性和关系:(1)接触角随等离子体辐照时间的变化。(2)表面从亲水状态到疏水状态的恢复过程,即照射结束后接触角与经过时间的关系,结果表明,铝是三种金属中最好的。铝的接触角下降到接近零,而铜和不锈钢在辐照过程中的终端接触角接近10度。在铝的情况下,还对其表面进行了特殊处理,以具有分形表面结构。为了了解这种表面的冷却能力,进行了水滴蒸发实验,得到以下结果:(1)当表面温度为50 ℃时,水滴蒸发时间与接触角有关;通过减小接触角,蒸发时间大大缩短,并且通过改善表面润湿性来增强蒸发。(2)润湿极限温度随接触角的减小而升高。对于铝和铜,等离子体辐照使润湿极限温度提高了45 K,发现等离子体辐照改善润湿是一种很有前途的快速冷却技术。
项目成果
期刊论文数量(46)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
日高澄具, 高田保之, 山本弘志, 山下秋満, 伊藤猛宏: "プラズマ照射した金属表面の濡れ性変化と液滴蒸発"日本機械学会論文集(B編). 69-678. 437-444 (2003)
Sumitomo Hidaka、Yasuyuki Takada、Hiroshi Yamamoto、Akimitsu Yamashita、Takehiro Ito:“等离子辐照金属表面的润湿性变化和液滴蒸发”日本机械工程师学会汇刊(编辑 B)69-678。 2003)
- DOI:
- 发表时间:
- 期刊:
- 影响因子:0
- 作者:
- 通讯作者:
Y.Takata: "Control of Surface Wettability by Plasma Irradiation"Proceedings of the Fourth Pacific Thermal Science and Energy Engineering Workshop(PaRTSEE-4). 113-116 (2002)
Y.Takata:“等离子体辐照控制表面润湿性”第四届太平洋热科学与能源工程研讨会论文集(PaRTSEE-4)。
- DOI:
- 发表时间:
- 期刊:
- 影响因子:0
- 作者:
- 通讯作者:
Effect of surface wettability on boiling and evaporation
- DOI:10.1016/j.energy.2004.05.004
- 发表时间:2005-02-01
- 期刊:
- 影响因子:9
- 作者:Takata, Y;Hidaka, S;Ito, T
- 通讯作者:Ito, T
Evaporation of Water Drop on Photo-Induced Hydrophilic Surface
光诱导亲水表面上水滴的蒸发
- DOI:
- 发表时间:2002
- 期刊:
- 影响因子:0
- 作者:Y.Takata;S.Hidaka;H.Yamamoto;M.Masuda;T.Ito
- 通讯作者:T.Ito
Y.Takata, S.Hidaka, A.Yamashita, H.Yamamoto: "Plasma-irradiated Hydrophilic Surfaces and its Applications to Phase Change Heat Transfer"Proceedings of the 2nd International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics-HEFAT2003-. (CD-RO
Y.Takata、S.Hidaka、A.Yamashita、H.Yamamoto:“等离子体辐照亲水表面及其在相变传热中的应用”第二届传热、流体力学和热力学国际会议论文集-HEFAT2003-。
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- 期刊:
- 影响因子:0
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TAKATA Yasuyuki其他文献
TAKATA Yasuyuki的其他文献
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{{ truncateString('TAKATA Yasuyuki', 18)}}的其他基金
Wetting dynamics coupling with liquid-vapor phase change and surface oxidation at high temperature
高温下液-汽相变和表面氧化的润湿动力学耦合
- 批准号:
16H02315 - 财政年份:2016
- 资助金额:
$ 9.47万 - 项目类别:
Grant-in-Aid for Scientific Research (A)
Heat Transfer Mechanism of a Boiling Bubble on Hydrophobic Surface under Subcooling
过冷条件下疏水表面沸腾气泡的传热机理
- 批准号:
25630068 - 财政年份:2013
- 资助金额:
$ 9.47万 - 项目类别:
Grant-in-Aid for Challenging Exploratory Research
Mechanism and Effect of Surface Conditions on Evaporation of Small Droplets for Innovative Rapid Cooling
表面条件对创新快速冷却小液滴蒸发的机理和影响
- 批准号:
24246038 - 财政年份:2012
- 资助金额:
$ 9.47万 - 项目类别:
Grant-in-Aid for Scientific Research (A)
Stability of Vapor Film under High Subcooled Condition
高过冷条件下汽膜的稳定性
- 批准号:
23656152 - 财政年份:2011
- 资助金额:
$ 9.47万 - 项目类别:
Grant-in-Aid for Challenging Exploratory Research
Phase Change Phenomena on Hot Surfaces with a Variety of Wettability from Superhydrophilic to Superhydrophobic
具有从超亲水到超疏水的各种润湿性的热表面上的相变现象
- 批准号:
21246036 - 财政年份:2009
- 资助金额:
$ 9.47万 - 项目类别:
Grant-in-Aid for Scientific Research (A)
Micro 3D processing by laser ablation with a Bessel beam
通过贝塞尔光束激光烧蚀进行微 3D 加工
- 批准号:
19360100 - 财政年份:2007
- 资助金额:
$ 9.47万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
Development of Practical TiO_2 Heat Transfer Surface by Advanced Coating Technique
先进涂层技术开发实用TiO_2传热表面
- 批准号:
17360097 - 财政年份:2005
- 资助金额:
$ 9.47万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
Development of Heat Transfer Surface using Superhydrophilic Photocatalyst
使用超亲水光催化剂开发传热表面
- 批准号:
12555059 - 财政年份:2000
- 资助金额:
$ 9.47万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
Zero-Emission Combined Power Cycle Using LNG Cold
使用液化天然气冷的零排放联合动力循环
- 批准号:
12650209 - 财政年份:2000
- 资助金额:
$ 9.47万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Boiling Bubble Dynamics by Numerical Simulation
通过数值模拟研究沸腾气泡动力学
- 批准号:
09650245 - 财政年份:1997
- 资助金额:
$ 9.47万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
相似海外基金
Photo-catalytic superhydrophilicity enhances Osseointegration
光催化超亲水性增强骨整合
- 批准号:
18390520 - 财政年份:2006
- 资助金额:
$ 9.47万 - 项目类别:
Grant-in-Aid for Scientific Research (B)