Study on the thermal energy conversion with the rarefied gas flows in micro-channels

微通道内稀薄气流热能转换研究

• 批准号: 20560158
• 负责人: SUGIMOTO Hiroshi
• 金额: $ 3万
• 依托单位: Kyoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2008
• 资助国家: 日本
• 起止时间: 2008 至 2010
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20560158/
• 关键词: 分子気体; 希薄気体; 気体分離; 熱遷移; マイクロ・ナノデバイス; MEMS; 流体; 分子気体力学; 希薄流; クヌッセン・ポンプ; 構造・機能材料; 熱工学; 廃熱利用

The methods of energy conversion, which make use of the rarefied gas flows in micro-channels, are investigated. Numerical and experimental studies are carried out on the pressure difference or the variation of the molar fraction of gas mixture induced by the temperature field. The main result of this research is the fundamental design of the gas separator of open fluid system, which makes use of the molecular exchange flows in micro-channels. Two experimental results of this research support it. (i) A multilayer mesh structure, which transforms a temperature difference into a gas flow through the mesh, is devised. A test system works at wide range of gaseous pressure, e.g., from 10000 Pa down to 10 Pa. (ii) The differences of molar fraction of the gas mixture between the two ends of the thermal edge pump are detected for various mixture of gases. This is the first evidence of the gas separation effect of the thermally driven pumps.

研究了利用微通道内稀薄气体流动进行能量转换的方法。对温度场引起的压差或混合气体摩尔分数的变化进行了数值和实验研究。本研究的主要成果是利用微通道内的分子交换流动，对开放式流体系统的气体分离器进行了初步设计。本研究的两个实验结果支持这一点：（i）设计了一种多层网格结构，它将温度差转化为通过网格的气流。测试系统在宽范围的气体压力下工作，例如，从10000帕下降到10帕。(ii)对不同的混合气体，测量了热边缘泵两端混合气体摩尔分数的差异。这是热驱动泵的气体分离效果的第一个证据。

项目成果

Gas Separator with the Thermal Transpiration in a Rarefied Gas

稀薄气体中的热蒸发气体分离器

• 发表时间: 2010
• 作者: 杉元宏;篠遠晃;杉元宏・篠遠晃;H.Sugimota;H.Sugimoto
• 通讯作者: H.Sugimoto

温度場によって誘起される希薄気体の流れを用いた気体分離装置

利用温度场诱导稀气流的气体分离装置

• 发表时间: 2010
• 期刊: 真空 53
• 作者: 杉元宏;篠遠晃
• 通讯作者: 篠遠晃

Experiment on the Gas Separation Effect of the Pump Driven by the Thermal Edge Flow

热边流驱动泵气体分离效果实验

• 发表时间: 2008
• 作者: 篠遠晃;杉元宏;杉元宏
• 通讯作者: 杉元宏

Rarefied gas flows induced through a pair of parallel meshes with different temperatures

通过一对不同温度的平行网格诱导稀薄气流

• 发表时间: 2008
• 作者: H.Sugimoto;S.Kawakami;K.Moriuchi
• 通讯作者: K.Moriuchi

Gas Separator with the Thermal Transpiration in Micro Channels

微通道热蒸发气体分离器

• 发表时间: 2010
• 作者: 杉元宏;篠遠晃;杉元宏・篠遠晃;H.Sugimota
• 通讯作者: H.Sugimota