Feasibility Study on Natural Cooling of Atrium in Cold region

寒冷地区中庭自然降温的可行性研究

• 批准号: 05452259
• 负责人: ENAI Masamichi
• 金额: $ 3.07万
• 依托单位: Hokkaido University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1993
• 资助国家: 日本
• 起止时间: 1993 至 1994
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-05452259/
• 关键词: Ventilation by convection; Atrium; Natural cooling; Numerical analysis; Box model; Model analysis; Similarity law; Temperature distribution; 上方開放; 数値解析; トレーサーガス法

1. Thermal Environment of Light-well Atrium in the SummerThe temperature distributions were measured in the atrium space of the Government Building in Rumoi and in one of the City Hall in Ishikari. When the exhaust windows for a fire emergency were opened in the summer, the warm air at the ceiling level of glass roof was exhausted and the cool outdoor air was flowed into the atrium spaces. It is useful for the natural cooling by using the outdoor air to open the exhaust windows at the ceiling level in the summer.2. Numerical Analysis to Calculate the Vertical Temperature DistributionDr.Tokari proposed the numerical analysis method for the vertical temperature distribution in a large space like an atrium. The box model of Tokari's method was improved for a vertical plane mixed of glass window and of solid wall. It is able to calculate the temperature distribution in an atrium completed with a vertical plane mixed of glass and solid wall.3. Similarity Law for Natural Ventilation Caused by ConvectionAn approximate similarity law for natural ventilation was proposed, and amount of ventilation in a small model and a large model were measured by the tracer gas method. The reduce ratio of two models was 1 : 4. The similarity law was certified in such a situation.

1.光井中庭夏季热环境的研究对留毛市政府大楼中庭和石狩市市政厅中庭的温度分布进行了测量。当夏季火灾紧急情况下打开排气窗时，玻璃屋顶天花板层的热空气被排出，室外冷空气流入中庭空间。在夏季，通过打开天花板水平的排气窗，利用室外空气进行自然冷却是有用的。垂直方向温度分布的数值分析Tokari博士提出了中庭等大型空间的垂直方向温度分布的数值分析方法。对Tokari法的箱形模型进行了改进，使之适用于玻璃窗和实体墙混合的垂直平面。能够计算玻璃与实心墙混合立面中庭的温度分布.对流引起的自然通风相似律提出了自然通风的近似相似律，并采用示踪气体法对小模型和大模型的通风量进行了测量。两种模型的减速比为1：4。在这种情况下，证明了相似律。

项目成果

森太郎: "積雪寒冷都市型アトリウムの熱環境に関する研究 その2 サッポロファクトリーの空気温度分布の推移" 日本建築学会北海道支部研究報告集. No.67. (1994)

森太郎：《冰雪寒冷的城市中庭的热环境研究第2部分：札幌工厂气温分布的变化》日本建筑学会北海道分院研究报告书第67号。（1994年）

本間義規: "透明天蓋空間の熱環境変動因子に関する研究 その17 留萌合同庁舎の放射温度分布の推移" 日本建築学会北海道支部研究報告集. No.67. (1994)

本间义典：《透明天篷空间热环境变化因素研究第17部分留萌联合政府大楼辐射温度分布的变化》日本建筑学会北海道分会研究报告书第67号。（1994年）

Yoneda, Enai, Aratani: "Comparison of ventilation by convection between two small models as variable reduce ratio" Trans.of Branch of AIJ. No.68. (1995)

Yoneda、Enai、Aratani：“两个小型模型之间对流通风作为可变减速比的比较”Trans.of Branch of AIJ。

M.Enai et.al: "Study on the Law of Similarity of Ventilation caused by Thermal Convection in Small Atrium Models,and Measurements of the Total Vetilation Tates by Tracer Ges Method" Cold Climate HVAC'94(Finland). (1994)

M.Enai 等人：“小中庭模型中热对流引起的通风相似定律的研究，以及通过示踪剂 Ges 方法测量总通风率”冷气候 HVAC94（芬兰）。

Kubota, Enai, Aratani, Yoneda: "Study on the factors of thermal environments in glass covered space, part 18" Trans.of Branch of AIJ. No.68. (1995)

Kubota、Enai、Aratani、Yoneda：“玻璃覆盖空间中热环境因素的研究，第 18 部分”AIJ 分会 Trans.of。