Development of Cold Draft Prevention System Utilizing the Momentum of Airflow along the Window

利用沿窗气流的动量开发防冷风系统

• 批准号: 10555206
• 负责人: UTSUMI Yasuo
• 金额: $ 6.85万
• 依托单位: MIYAGI NATIONAL COLLEGE OF TECHNOLOGY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1998
• 资助国家: 日本
• 起止时间: 1998 至 1999
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10555206/
• 关键词: cold draft; prevention; experiment; CFD; perimeter; ペリメータ; 実測; シミュレーション; カバー; 暖房消費量

The part of perimeter in rooms are likely to have the effect of outdoor and the cold draft can occur in winter. This research is aimed to develop the equipment which avoid the draft at the perimeter close to the window.The procedure takes three steps ; 1) the comparison between the simulation and the experiment, 2) the design of the dimension of the equipment by the simulation, and 3) the validation with applying it to actual rooms.The results show ; 1) the 2-dimensional simulation agrees with the full scale experiment that has the line airflow supply, 2) the equipment that is expected high performance by the simulation is installed in a classroom at 1F and a corner at 2F in winter, and the measurement indicates that the equipment prevent the draft, 3) the 3-dimensional simulation shows same flow pattern to the measurement but more precise experiment may be necessary, and 4) the heat generation rate is most effective to avoid the draft and the width of inlet and outlet of the equipment is next, where the width should be more than the thickness of boundary layer developed by the draft.As a summary the equipment is constructed and the performance is confirmed. The system avoid the draft even when the heat generation rate is 70% of the heat loss through the window.

房间的周长部分可能会产生室外的影响，冬季可能会出现寒风。本研究的目的是开发一种在靠近窗户的周界处避风的设备。研究过程分为三个步骤：1)模拟与实验的比较；2)通过模拟设计设备的尺寸；3)将其应用于实际房间进行验证。结果表明：1)二维模拟与有线路送风的全尺寸实验相吻合；2)模拟期望的高性能设备安装在冬季1层教室和2层角落，测量表明该设备可以防止通风；3)三维模拟显示出与测量相同的流型，但可能需要更精确的实验；4)产热率对避风最有效，其次是设备的进出口宽度，其中宽度应大于吃水发展的边界层厚度。作为总结，搭建了设备并对其性能进行了确认。即使当发热率是窗户散热量的70%时，系统也可以避免通风。

项目成果

SATO, UTSUMI, KOBAYASHI and SHIMOTANAKA: "Study on Improvement of Thermal Environment I Perimeter Zone Part 2"Reports of Annual Meeting of SHASE. Vol.II. 609-612 (1999)

SATO、UTSUMI、KOBAYASHI、SHIMOTANAKA：“热环境改善研究 I 周边区第 2 部分”SHASE 年会报告。

宮田怜子,内海康雄,小林仁: "ペリメータ空間の温熱環境の改善手法についての研究 その1 温熱環境の実測並びにカバーと蓄熱体によるコールドドラフト防止効果の検討" 空気調和・衛生工学会学術講演会講演論文集. III. 1809-1812 (1998)

宫田丽子、内海康夫、小林仁：“周边空间热环境改善方法研究，第1部分：热环境的实际测量以及盖和蓄热体的防冷风效果的检验”学会演讲日本空调与卫生工程师学术会议论文集 1809-1812 (1998)。

下田中、内海、小林: "ペリメータ空間の熱環境改善効果の検討その4"日本建築学会大会学術講演梗概集. 933-934 (1999)

下田中、内美、小林：“周边空间热环境改善效果研究第4部分”日本建筑学会会议学术讲座摘要933-934（1999）。

福島、内海、小林、石川、鈴木、山下: "ペリメータ空間の熱環境制御に関する研究その4"日本建築学会東北支部研究報告集. 62. 291-294 (1999)

福岛、内海、小林、石川、铃木、山下：“周边空间热环境控制研究第4部分”日本建筑学会东北分会研究报告62。291-294（1999）。

福島、内海、小林、石川、鈴木、山下: "Studyon Control of Thermal Enviornment of Perimeter Space in Buildings"Building Simulation '99. II. 947-953 (1999)

Fukushima、Utsumi、Kobayashi、Ishikawa、Suzuki、Yamashita：“建筑物周边空间热环境控制研究”建筑模拟 947-953 (1999)。