ドライミスト冷却効果の検証とcfd解析: ドライミストを用いる採涼システムに関する研究

摘要

The objective of this study is to propose a prediction technique for cooling effect of dry mist, and present useful data for design / control of a dry mist system. In this paper, the cooling effect of dry mist system was verified by two dry mist systems there were actually introduced and operated. One of the verified systems is a dry mist system that was installed into the air corridor on the site Aichi Expo. A cooling effect of this one was evaluated by using the field measurement data during three months. Another one is a dry mist system introduced into N university campus. We found out that the cooling effect by dry mist evaporative is presented about 3 degree Celsius of air temperature reduce and about 15 %RH of relative humidity increase. In addition, the cooling effect of the dry mist system was simulated with a CFD analysis code that is Fluent Ver. 6.3. The reproducibility was confirmed, and the possibility of the performance prediction of the dry mist system was shown.%水の蒸発潜熱は約2.3MJ／kgであり、これを上手に利用すれば、 少ないエネルギーで効率のよい冷却効果が期待できるといえる。 また、地球温暖化や都市部のヒートアイランド現象など、環境問 題が深刻化していくなかで、水の気化熱は夏の暑さに対して有効 な冷熱源であり、これの有効な利用は持続可能なエネルギー利用 手法といえる。