Promotion of frost elimination applying super high-tension in a series of pulses

在一系列脉冲中施加超高张力促进除霜

基本信息

  • 批准号:
    06650238
  • 负责人:
  • 金额:
    $ 1.28万
  • 依托单位:
  • 依托单位国家:
    日本
  • 项目类别:
    Grant-in-Aid for General Scientific Research (C)
  • 财政年份:
    1994
  • 资助国家:
    日本
  • 起止时间:
    1994 至 1995
  • 项目状态:
    已结题

项目摘要

In order to promote the elimination and control against the growth of frost, it is examine to impress high voltage in a series of pulses.In the first place, the effect of electric field on the frost formation around a tube in the uniform flow is studied phenomenologically. The electric field is applied between the surface and the mesh electrode. Removing of the frost from the surface depends on the structure of frost. The expected result of the electric field were obtained in the separation region.In the second place, a NEOFLON-FEP thin film surface was used as a frosting surface. It could be expected that the frost may be removed from the surface more easily by applying the electric fields, because the bounding strength between the frost and surface becomes weaker than a copper surface was used as the frosting surface. The results reveal that the wettability of the surface is not affect the frosting weight process. However, frost height on a NEOFLON-FEP-film surface was formed lower than frost height on a copper surface.Charge of high voltage has a highly inhibitory action against the growth of frost because it increases the Maxwell's stress and promote the growth of needle-shaped frost due to the nonisotropic growth occured by ordering of proton. But, when pulse frequency is large and pulse width is small, even charge of super high tension took no recognizable effect to the isotropic growth of frost. They are important factors on the control against the growth frost utilizing electric field.
为了促进霜层的消除和抑制霜层的生长,本文研究了在一系列脉冲中施加高压的方法。首先,从唯象的角度研究了均匀流中电场对管周结霜的影响。在表面和网状电极之间施加电场。表面霜的去除取决于霜的结构。在分离区获得了预期的电场效果。其次,采用NEOFLON-FEP薄膜作为磨砂面。可以预期,通过施加电场可以更容易地从表面去除霜,因为霜和表面之间的结合强度变得比铜表面用作结霜表面更弱。结果表明,表面润湿性对结霜增重过程没有影响。而NEOFLON-FEP膜表面的霜层高度低于铜表面的霜层高度,高电压电荷对霜层的生长有很强的抑制作用,这是因为高电压电荷增加了麦克斯韦应力,促进了针状霜层的生长,这是由于质子有序化引起的各向异性生长。但是,当脉冲频率较大、脉冲宽度较小时,即使是超高压荷电对霜层的各向同性生长也没有明显的影响。它们是电场控制霜层生长的重要因素。

项目成果

期刊论文数量(18)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Kenichi Ishihara: "Characteristics of Frost on a single Tube in Cross Flow and Control against the Growth of frost by Utilizing Electric Fields." Proc.of 31 National Heat Transfer Symposium of Japan. III. 1057-1059 (1994)
Kenichi Ishihara:“横流中单管上的霜特性以及利用电场控制霜的生长。”
  • DOI:
  • 发表时间:
  • 期刊:
  • 影响因子:
    0
  • 作者:
  • 通讯作者:
"Control against the Growth of Frost Utilizing Electric Fields." Proc.of 33 National Heat Transfer Symposium of Japan. I(in press). (1996)
“利用电场控制霜的生长。”
  • DOI:
  • 发表时间:
  • 期刊:
  • 影响因子:
    0
  • 作者:
  • 通讯作者:
石原健一: "一様流中に置かれた単一円管まわりの着霜特性と電場付与による霜成長の抑制" 第31回日本伝熱シンポジウム講演論文集. III. 1057-1059 (1994)
Kenichi Ishihara:“均匀流动中的单个圆管周围的霜形成特性以及通过施加电场抑制霜的生长”第 31 届日本传热研讨会论文集 III 1057-1059(1994 年)。
  • DOI:
  • 发表时间:
  • 期刊:
  • 影响因子:
    0
  • 作者:
  • 通讯作者:
岡本賢一郎: "電場付与による霜成長の抑制と表面の濡れ性の効果" 第32回日本伝熱シンポジウム講演論文集. I. 171-172 (1995)
Kenichiro Okamoto:“通过施加电场抑制霜生长和表面润湿性的影响”第 32 届日本传热研讨会论文集 I. 171-172 (1995)。
  • DOI:
  • 发表时间:
  • 期刊:
  • 影响因子:
    0
  • 作者:
  • 通讯作者:
岡本賢一郎: "電場付与による霜成長の抑制" 第33回日本伝熱シンポジウム講演論文集. I(印刷中). (1996)
Kenichiro Okamoto:“通过施加电场抑制霜生长”第 33 届日本传热研讨会论文集 I(正在出版)。
  • DOI:
  • 发表时间:
  • 期刊:
  • 影响因子:
    0
  • 作者:
  • 通讯作者:
{{ item.title }}
{{ item.translation_title }}
  • DOI:
    {{ item.doi }}
  • 发表时间:
    {{ item.publish_year }}
  • 期刊:
  • 影响因子:
    {{ item.factor }}
  • 作者:
    {{ item.authors }}
  • 通讯作者:
    {{ item.author }}

数据更新时间:{{ journalArticles.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ monograph.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ sciAawards.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ conferencePapers.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ patent.updateTime }}

KUMADA Masaya其他文献

KUMADA Masaya的其他文献

{{ item.title }}
{{ item.translation_title }}
  • DOI:
    {{ item.doi }}
  • 发表时间:
    {{ item.publish_year }}
  • 期刊:
  • 影响因子:
    {{ item.factor }}
  • 作者:
    {{ item.authors }}
  • 通讯作者:
    {{ item.author }}

{{ truncateString('KUMADA Masaya', 18)}}的其他基金

Studies on mechanism of outbreak and disappear of drag reduction by temperature change
温度变化减阻爆发与消失机理研究
  • 批准号:
    17560180
  • 财政年份:
    2005
  • 资助金额:
    $ 1.28万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Development of a new high performance heat exchanger using a surfactant water solution
使用表面活性剂水溶液开发新型高性能热交换器
  • 批准号:
    12650199
  • 财政年份:
    2000
  • 资助金额:
    $ 1.28万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Flow and Heat Transfer Characteristics of High-Polymer Flow with Free Gas-Liquid Interface Boundary
自由气液界面高分子流动的流动与传热特性
  • 批准号:
    08650252
  • 财政年份:
    1996
  • 资助金额:
    $ 1.28万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Investigation of Ultra Faster Melting Process of Very Fine High-Polymer Particle.
极细高分子颗粒超快熔化过程的研究。
  • 批准号:
    03650179
  • 财政年份:
    1991
  • 资助金额:
    $ 1.28万
  • 项目类别:
    Grant-in-Aid for General Scientific Research (C)
Basic Studies on Development of Ceramic Abradable Shroud
陶瓷耐磨护罩研制的基础研究
  • 批准号:
    01550171
  • 财政年份:
    1989
  • 资助金额:
    $ 1.28万
  • 项目类别:
    Grant-in-Aid for General Scientific Research (C)
Heat Transport Mechanism around Tubes Immersed in Floating Particles
浸没在漂浮颗粒中的管周围的热传输机制
  • 批准号:
    62550148
  • 财政年份:
    1987
  • 资助金额:
    $ 1.28万
  • 项目类别:
    Grant-in-Aid for General Scientific Research (C)
Basic Studies On A New Fluidized Bed Heat Exchanger
新型流化床换热器的基础研究
  • 批准号:
    60550150
  • 财政年份:
    1985
  • 资助金额:
    $ 1.28万
  • 项目类别:
    Grant-in-Aid for General Scientific Research (C)
{{ showInfoDetail.title }}

作者:{{ showInfoDetail.author }}

知道了