Study on Mechanism and Prevention of Thermal Discomfort Caused by Cold Outdoor Air through Supply Opening on the Wall (In the Case of Residence with various kind of Heating System)
Study on Mechanism and Prevention of Thermal Discomfort Caused by Cold Outdoor Air through Supply Opening on the Wall (In the Case of Residence with various kind of Heating System)
批准号:
11450213
负责人:
YOSHINO Hiroshi
金额:
$9.66万
依托单位:
依托单位国家:
日本
项目类别:
Grant-in-Aid for Scientific Research (B).
财政年份:
1999
资助国家:
日本
项目状态:
已结题
起止时间:
1999 至 2000
中文摘要
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英文摘要
The research had been carried out since 1999 until 2000. The results obtained are as follows :(1) Questionnaire surveys The questionnaire survey of 86 residential buildings in the Kanto, Tohoku and Hokkaido district was carried out. More than half of residential buildings in the Tohoku and Hokkaido district have a problem of cold draft due to outdoor air, and then about 30% of them the occupant sometimes close their air inlets.(2) Field measurement in residential buildings In three residential buildings what installed mechanical exhaust system, measurement of air tightness, air exchange rate, air distribution and temperature distribution near inlet were carried out. Cold air infiltration was found in two residences.(3) Investigation on the air inlet Various inlets used inside and outside Japan were investigated and classified. Performance test of nine inlets were examined by using standard type small size wind tunnel. Information of inlet mechanism was documented.(4) Real scale experim … More ent using environmental chamber A real scale experiment in environmental chamber was carried out. The results are as follows, (1) The standardized vertical temperature difference is affected by the airflow directions from the supply opening. The highest value is observed for horizontal flow with maximum vertical temperature difference. The value increases in the flow directions of "vertical upward with an angle", "radial outward parallel to wall", "radial outward with an angle from wall", "horizontal outward from wall", sequently. (2) The standardized vertical temperature difference was examined in terms of various opening positions. The value of the difference decrease in the case of inlet installed above the window, in the upper, in the middle, in the lower of the wall sequently. (3) The influence of supply air velocity on vertical temperature difference was not significant.(5) Numerical analysis A full size room was adopted as the numerical model geometry. The standard k-ε model was used for the numerical simulation. Numerical result was compared with experiment, and accuracy was discussed. Furthermore, from the view points of air exchange efficiency and thermal comfort, air flow direction was also discussed. Less
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Zhen-hai Li, Hiroshi Yoshino, Yasuo Utsumi, Hiroshi Kobayashi, Yukio Sakaba, Kenkou Mushya and Nobuyuki Iwai: "A Studies about thermal Discomfort due to Outdoor Cold Air Coming Through the Air Outlet Installed on the Outside Wall, Part 1. Outline of Labor
Chen-hai Li、Hiroshi Yoshino、Yasuo Utsumi、Hiroshi Kobayashi、Yukio Sakaba、Kenkou Mushya 和 Nobuyuki Iwai:“关于室外冷空气通过安装在外墙上的出风口的热不适的研究,第 1 部分。概述
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Zhen-hai Li and Hiroshi Yoshino: "Questionnaire Survey Related with the Influence of the Air Outlet on the Thermal Environment in Single Family House"TRANSACTIONS OF THE SOCIETY OF HEATING, AIR-CONDITIONING AND SANITARY ENGINEERS OF JAPAN. Vol.77. 109-115
李振海、吉野浩:《单户住宅排风口对热环境影响的问卷调查》日本供暖空调卫生工程学会会刊。
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李振海,吉野博: "戸建て住宅の換気システム並びに外壁給気口の熱環境に及ぼす影響に関するアンケート調査"空気調和・衛生工学会論文集. 77. 109-115 (2000)
李振海,吉野浩:“通风系统和外墙送风口对独栋住宅热环境影响的问卷调查”,空调与卫生工程师学会学报,77. 109-115(2000)。
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李振海,吉野博,内海康雄(外4名): "外壁給気口からの冷気侵入による温熱不快感の形成機構の解明とその防除に関する研究その1実験室の概要と室内温度分布の測定"日本建築学会東北支部研究報告集計画系. 63. 245-248 (2000)
李振海、吉野浩、内海康夫(其他4人):《外墙送风口冷空气侵入热不适形成机制的阐明及其预防研究》第1部分实验室概况及室内测量温度分布” 日本建筑学会东北分会研究报告收集规划系统. 63. 245-248 (2000)
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李振海,吉野博,内海康雄(外4名): "外壁給気口からの外気導入による室内温度分布の形成に関する実験的研究"日本建築学会大会学術講演梗概集. 2000・D-II. 109-110 (2000)
李振海、吉野浩、内海康夫(其他4人):《通过外墙送风口引入室外空气形成室内温度分布的实验研究》日本建筑学会2000年年会论文集·D-II。 109-110(2000)
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共 6 条
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Propose a new technique for General Commissioning of ventilation system in house and development of planning and assessment tools for Commissioning
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Nationwide Investigation of Relationship among Performance of Ventilation System, Ventilation rate and Indoor Air Quality in Airtight Houses
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Application of Hygroscopic, Deodorizing and Adsorbent Material using Zeolite to all sorts of Architectural Use
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Immunity system, nerve system ・ endocrine system in periodontitis
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Development and Research for Performance Diagnosis Method of Ventilation System in Residential House by Age of Air
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VERIFICATION OF CALCULATION ACCURACY OF MULTIZONE AIR FLOW MODELS (COMIS MODELS) USING A FULL SCALE TEST HOUSE
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Study on Prevention of Indoor Pollution in Insulated and Airtight Houses
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