Study on Summer Type Internal Dew Condensation in Wall of Thermal Insulated and Air-Tight House

保温气密房屋夏季型墙内结露研究

• 批准号: 06452295
• 负责人: WATANABE Toshiyuki
• 金额: $ 4.29万
• 依托单位: KYUSHU 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: 1994
• 资助国家: 日本
• 起止时间: 1994 至 1995
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-06452295/
• 关键词: House; Thermal Insulated and Air-Tight; Cooling Time during Summer; Internal Dew Condensation; Life-Style; Questionnaire; Experiment; Numerical Simulation

Recently, thermal insulated and air-tight houses are built in seasonal hot and humid areas of Japan. But a percentage of water content in the house frame or the thermal insulating material increases after the rainy season, so there is probability that an internal dew condensation is induced in the wall in a cooling time during summer season and deteriorates the wall.A purpose of this study is that a guidance for a design of the wall constitution and a prevention method for the internal dew condensation are suggested about the insulated and air-tight house in seasonal hot and humid area.Based on a questionnaire for the first year, we measured indoor air temperature-humidity, electrical energy consumption for air-conditioning, the existance of internal dew condensation and its damage of 15 houses, which consisted of 3 conventional detached houses, 4 conventional apartment houses, 4 insulated detached houses and 4 insulated apartment houses in Fukuoka Prefecture. We also measured air-tigh … More tness of 6 detached houses in both Fukuoka and Yamaguchi Prefecture according to building construction and building element. We made some improvements on a calculation model and examined a suitable guideline for the thermal design of walls in seasonal hot-humid area by using these results and numerical simulations. The main results obtained are as follows.(1) According to the questionnaire, there are more damages in insulated apartment houses.(2) People living in the insulated houses have less interest in solar shading and cross-ventilation, and have much dependence on air-conditioning.(3) Air-tightness is the most effective in the outside insulated construction, the second is in the panel construction, the third is the frame construction, the last is the conventional one. Especially, air-tightness indicates a wide scatter in the frame or conventional method by level of construction.(4) In case of 24 hours air-conditioning, the most suitable thickness of the thermal insulating material (glass wool 10 K) is 24 cm and the most suitable air-tightness is 2.1cm^2/m^2 as an equivalent leakage area per floor area in Sapporo. However, it takes 14 cm and 4 cm^2/m^2 in Fukuoka. In case of intermittent air-conditioning, it takes 3.5 cm and 7.8cm^2/m^2 in Fukuoka.(5) It needs to keep a vent layr on a back of the exterior finish material and a vapor transmission sheet inside of the vent layr, and does not need to have the vapor transmission sheet on a back of the interior finish material. Less

最近，日本季节性炎热潮湿地区修建了隔热密闭房屋。但雨季过后，房屋框架或保温材料中的一定比例的水分会增加，因此在夏季的降温时间内，墙体可能会产生内结露，使墙体恶化。本研究的目的是为季节性高湿地区的隔热密闭房屋提供墙体构造设计的指导和防止内结露的方法。根据第一年的问卷调查，我们测量了15户房屋的室内温湿度、空调能耗、内结露的存在及其危害。其中包括福冈县的3栋常规独立房、4栋常规公寓楼、4栋隔热独立房和4栋隔热公寓楼。我们还测量了空气中的…根据建筑结构和建筑元素，福冈县和山口县的6栋独立房屋的质量更高。根据计算结果和数值模拟结果，对计算模型进行了改进，提出了适用于季节性湿热地区墙体热设计的准则。主要研究结果如下：(1)调查问卷显示，居住在保温房内的居民对遮阳和交叉通风的兴趣较小，对空调的依赖程度较高。(3)外保温结构的气密性效果最好，其次是板式结构，其次是框架结构，最后是常规结构。(4)在24小时空调的情况下，最适宜的隔热材料(玻璃棉10K)厚度为24 cm，最适宜的气密性为2.1 cm^2/m^2，相当于札幌市每层建筑面积的渗漏面积。然而，在福冈，它需要14厘米和4厘米^2/m^2。如果是间歇式空调，在福冈需要3.5 cm和7.8 cm^2/m^2。(5)需要在外部饰面材料的背面设置通风层，在通风层的内部设置透气片，而不需要在内部面料的背面设置透气片。较少

项目成果

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Hiroyuki Kurashige、Toshiyuki Watanabe等：“通风墙的温度/湿度波动和防露效果研究第3部分”日本建筑研究所中国/九州分院联合研究报告第10. 345-348号（1996）。

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A. Ozaki，T. Watanabe，等：“湿热季节外墙湿害预防研究”Proc。

渡辺俊行: "温暖地における住宅のアメニティとエネルギー" 熱と環境. 43. 1-10 (1994)

Toshiyuki Watanabe：“温暖地区的住房设施和能源”热与环境。 43. 1-10 (1994)

Shozo Sato, Toshiyuki Watanabe, et al.: "Study on Internal Dew Condensation and Its Prevention of Outside Insurated Wall, Part 2" Summeries of Technical Papers of AIJ Annual Meeting. D-2, (in Japanese). 339-340 (1995)

Shozo Sato、Toshiyuki Watanabe等：“外保温墙内结露及其防治研究，第2部分”AIJ年会技术论文摘要。

進藤博,渡辺俊行,他: "夏季蒸暑地域における戸建住宅の構法別および部位別気密性能調査" 日本建築学会中国・九州支部合同研究報告. 第10号(発表予定). (1996)

Hiroshi Shindo、Toshiyuki Watanabe等人：“炎热潮湿夏季地区按施工方法和位置对独立式住宅的气密性能进行调查”日本第10建筑研究所中国和九州分院的联合研究报告。 （待出版）。