冷却壁面における水蒸気凝縮に与えるエバネッセント波の影響

倏逝波对冷却壁上水蒸气凝结的影响

• 批准号: 09875057
• 负责人: 山田 純
• 金额: $ 1.28万
• 依托单位: University of Yamanashi
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Exploratory Research
• 财政年份: 1997
• 资助国家: 日本
• 起止时间: 1997 至 无数据
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09875057/
• 关键词: エバネッセント波; 水蒸気; 凝縮; くもり; 分子運動

冷却壁への水蒸気凝縮は,運動エネルギーの低い水蒸気分子が壁面に吸着することにより生じると考えられる.本研究では,水蒸気分子を誘電体表面に発生するエバネッセント波により活性化することにより,誘電体を冷却壁とするその表面への水蒸気凝縮が抑制できるかどうかについて実験的検討を行った.冷却壁表面にエバネッセント波を発生させるために,冷却壁には最低辺側を鏡面コートした台形プリズムを用意し,その斜辺から光を入射させて短上辺側にエバネッセント波を発生させた.プリズムは,長底辺を冷凍機からの冷媒で冷却されるタンク表面に設置され,熱伝導により冷やされた.光源としては,水蒸気のふく射の吸収スペクトル(1.39μm)を赤外線発信する,出力2mWの半導体レーザーを用いた.また,凝縮量は,He-Neレーザーを冷却壁上面(凝縮面)に照射し,凝縮液滴による散乱光を光電子増倍管で検出することで計測した.冷却壁表面の温度については,エバネッセント波の発生を妨げないように,赤外線画像カメラにより計測した.実験は通常の空気雰囲気中で行われたが,エバネッセント波による冷却壁面への水蒸気凝縮の抑制は観察できなかった.この理由としては,エバネセント波の発生する極めて狭い領域(壁面上1波長程度)において水蒸気分子に十分なエネルギーを供給できないことがあげられるが,その他の理由として,酸素や窒素などの不凝縮気体の影響が考えられる.エバネッセント波により水蒸気分子がエネルギーを得ても,周囲の低エネルギー不凝縮気体分子にエネルギーを吸収されることは十分に考えら,この場合,凝縮は抑制されない.今後は,不凝縮気体を排除した水蒸気雰囲気中でエバネッセント波の凝縮に与える影響を検討する必要がある.

The cooling stave is heated by water steaming and condensing, and the low temperature water vapor molecules are adsorbed on the wall. In this study, water vapor molecules are active on the surface of electronics. in this study, water vapor molecules are activated on the surface of electronics. in this study, water vapor molecules are activated on the surface of electronics. in this study, water vapor on the surface of the cooling stave is used in this study. in this study, water vapor molecules are activated on the surface of electronics. On the surface of the cooling stave, there is a wave on the surface of the cooling stave, and the cooling stave has the lowest surface, the lowest surface, the table, the incident light and the surface of the cooling stave. Make sure that the refrigerant cooler is installed on the surface of the cooler, and that the cooler is set on the surface. The light source is very sensitive, and the water vapor is used to absorb the light source (1.39 μ m). In this way, the light source is used as a source of light, and the light source is sensitive to the light source, the water vapor, the water vapor, the light source, the water vapor, the water vapor, the light source, the water vapor, the water vapor, the light source, the water vapor, the water vapor, the light source, the water vapor, the water vapor, the light source, the water vapor, the water vapor, the light source, the water vapor, the water vapor, the light source, the light source, the water vapor, the water vapor, the light source, the water vapor, the water vapor, the light source, the light source, the water vapor, the water vapor, the light source, the light source, the water vapor, the water vapor, the light source, the light source, the The temperature, condensing capacity, He-Ne temperature, temperature, The temperature on the surface of the cooling stave is affected by the temperature, the temperature and the surface of the cooling stave, the temperature on the surface of the cooling stave, the temperature on the surface of the cooling stave, the temperature on the surface of the cooling stave, the temperature on the surface of the cooling stave, the temperature on the surface of the cooling stave. In the air, the air is usually in the air, and the cooling wall is covered by the cooling wall, the water vapor, the condensation, the suppression, the temperature and the temperature. The reason for this is that the wave is very important in the narrow field (1 wave on the wall). The molecular weight of water vapor is very high, and the molecular weight of water vapor is very sensitive to the concentration of water vapor molecules. The water vapor molecules are not condensed, the molecules are not condensable, the molecules are not condensed, and the molecules are not condensed. In the future, the non-condensable body will be removed from the water steaming machine in order to make sure that it is necessary to do so.