Fundamental Study on Prevention of Wall Surface condensation and Adhesion of Suspended Dust Particles

防止墙面凝结和悬浮尘粒附着的基础研究

• 批准号: 02680070
• 负责人: NAKANE Yoshikazu
• 金额: $ 1.41万
• 依托单位: OSAKA CITY UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1990
• 资助国家: 日本
• 起止时间: 1990 至 1992
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-02680070/
• 关键词: Wall Surface Condensation; Pattern Staining; Higher Air Tightness; Heating; Vapor Generation with Daily Life; パターン・ステイング; パタ-ン・ステイング; パタ-ンステイング

We may conclude that Wall Surface Condensation is happened by the vapor generation with daily life as such as cooking, take a bath, drying the laundry and so on, and insufficiency of ventilation rate in the room.In our former studies on the thermal boundary layer in the corner of wall, we proposed the thermal boundary layer equivalent to convective heat transfer for the practical thermal boundary layer in calculation of overall heat transmission, and classified the thermal boundary layer in the corner of wall in 10 types, and experiments by using Thermo Viewer have been undertaken under the limited condition, and, on the same conditions, numerical analysis was carried out. And empirical formula of the thermal boundary layer equivalent to convective heat transfer in each corner was obtained. In the present study, experiments by using Thermo Viewer and numerical analysis by Finite Element Method are made by applying the empirical formula of the thermal boundary layer equivalent to convective heat transfer in each corner to both internal-angled corner and external-angled corner in overall heat transmission analysis of wall corner. From the results mentioned above, we may conclude that empirical formula of the thermal boundary layer which we proposed can be applicable with united together to the numerical analysis of wall heat trans-mission by Finite Element Method.

在以往对墙角热边界层的研究中，我们提出了墙角热边界层相当于对流换热的概念，并对墙角热边界层进行了分类，将墙角热边界层分为10种类型，利用Thermo Viewer进行了有限条件下的实验，并在相同条件下进行了数值分析。得到了各转角热边界层相当于对流换热的经验公式。在墙角的整体传热分析中，将内角和外角的各角热边界层等效对流换热的经验公式应用于墙角的整体传热分析，利用Thermo Viewer进行了实验和有限元数值分析。从上述结果可以看出，我们提出的热边界层经验公式可以统一应用于壁面换热的有限元数值分析。