Study on Diagnostic System of Ventilation Characteristics of Air-Tight Houses Based on Tracer Gas Experiment

基于示踪气体实验的气密房屋通风特性诊断系统研究

• 批准号: 10650594
• 负责人: KURABUCHI Takashi
• 金额: $ 2.5万
• 依托单位: Science University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 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-10650594/
• 关键词: Tracer Gas Experiment; Air-Tight Houses; Ventilation; Cross-Ventilation; On Site Survey; Age of Air; Simulation

This study aims at developing evaluation method of recently built air-tight houses concerning 1)air exchange characteristics in each room based on tracer gas experiment, 2)cross-ventilation characteristics and 3)effect of air-tightness and outdoor wind condition on installed ventilation equipments. As for the first purpose, we performed feasible study using full-sized model house and found that accurate evaluation of steady state tracer gas concentration in each room as well as inter-room flow rates is capable if pulse injection of tracer gas is made at an interval of 30 minutes. This method was then successfully applied to a collective house of super high-rise building for the quick evaluation of steady state concentration distribution and inter-room air exchange rates. As for the evaluation of cross-ventilation characteristics, we performed on site experiment using a collective house of middle story building, and found that tracer gas concentration of downstream rooms and downstream … More windows becomes almost uniform. However, temporal variations of room concentration does not well coincide with the solution of differential equation assuming each room air is completely mixed. Further work is needed concerning the injection method of tracer gas and mixing method of room air. A New trial research is then started to utilize on site pressure measurement and wind tunnel experiment. As for the last purpose of estimation of relationship between ventilation system, and air-tightness and outdoor wind condition, a number of field measurement was carried out of the air leakage areas of super-high-rise apartment houses located in urban area. It was found that air leakage area of doors is significantly different among the houses, and it can affect decisive influence of over all air-tightness and air exchange characteristics of the houses. Based on the measurement, an evaluation method of ventilation performance of equipment installed at center-core type super-high-rise apartment houses is developed using wind tunnel test data, climate data and air-tightness data of the building. Less

本研究针对新建气密房屋的评估方法，涉及1）基于示踪气体实验的每个房间的空气交换特性，2）交叉通风特性和3）气密性和室外风况对安装通风的影响对于第一个目的，我们使用全尺寸模型房屋进行了可行性研究，发现如果进行示踪气体的脉冲注入，则可以准确评估每个房间的稳态示踪气体浓度以及房间间的流量。间隔为随后，该方法成功应用于某超高层建筑的稳态浓度分布和房间间空气交换率的快速评估。至于交叉通风特性的评估，我们进行了现场评估。使用中层建筑的集体住宅进行实验，发现下游房间和下游窗户的示踪气体浓度几乎一致，但是，房间浓度的时间变化与假设每个房间空气均等的微分方程的解并不一致。完全混合的注射方法还需要进一步的工作。示踪气体和室内空气的混合方法，然后开始利用现场压力测量和风洞实验来评估通风系统与气密性和室外风况之间的关系。对位于市区的超高层公寓的漏风面积进行了多次实地测量，发现门的漏风面积在房屋之间差异显着，对房屋的漏风面积有决定性的影响。房屋的所有气密性和空气交换特性。在此基础上，利用风洞试验数据、建筑气候数据和气密性数据，建立了中心筒式超高层公寓设备通风性能评价方法。

项目成果

倉渕隆、臼井正武、吉原利正、澤地孝男: "トレーサーガス減衰実験に基づく多数空間換気性状の評価法に関する研究(その2)多数室間換気性状評価法の検証実験および高気密住宅への適用結果"日本建築学会1998年度大会(九州)学術講演梗概集. D-2. 939-940 (1998)

Takashi Kurabuchi、Masatake Usui、Toshimasa Yoshihara、Takao Sawachi：《基于示踪气体衰减实验的多房间通风性能评估方法研究（第二部分）多房间通风性能评估方法验证实验及其在高密闭中的应用》住房》申请结果》日本建筑学会1998年年会学术讲座集（九州）D-2（1998）。

小田芳嗣、倉渕隆、嵐口晃弘、鎌田元康、千田善孝: "超高層集合住宅における常時小風量換気システムの適切な設計法に関する研究-センターコア型住宅における換気シミュレーション"空気調和衛生工学会学術講演会講演論文集. 1205-1208 (1999)

Yoshitsugu Oda、Takashi Kurabuchi、Akihiro Arashiguchi、Motoyasu Kamata、Yoshitaka Senda：“超高层公寓大楼恒定小风量通风系统的适当设计方法研究——中心核心式住宅的通风模拟”学术会议日本空调卫生工程师学会讲座论文集 1205-1208 (1999)。

Takashi Kurabuchi, Masatake Usui, Kazumasa Yoshihara and Takao Sawachi: "An Evaluation Method of Inter-Room Air Exchange Characteristics Based on Tracer Gas Decay Experiments Part 1 Estimation of Steady State Concentration for Arbitrary Distributed Source

Takashi Kurabuchi、Masatake Usui、Kazumasa Yoshihara 和 Takao Sawachi：“基于示踪气体衰变实验的房间间空气交换特性评估方法第 1 部分任意分布式源稳态浓度估算”

Yoshitsugu Oda, Takashi Kurabuchi, Akihiro Arashiguchi, Motoyasu Kamata and Yoshitaka Chida: "Study on Proper Design Method Of Constant Low Air Volume Ventilation System Installed at Super-High Rise Apartment Houses"Technical Papers of Annual Meeting The

Yoshitsugu Oda、Takashi Kurabuchi、Akihiro Arashiguchi、Motoyasu Kamata、Yoshitaka Chida：《超高层公寓安装的恒定低风量通风系统的合理设计方法研究》年会技术论文

Masatake Usui, Takashi Kurabuchi, Kazumasa Yoshihara and Takao Sawachi: "An Evaluation Method of Inter-Room Air Exchange Characteristics Based on Tracer Gas Decay Experiments Part 2 Evaluation Method of Inter-Room Air Exchange Characteristics Applied to F

Masatake Usui、Takashi Kurabuchi、Kazumasa Yoshihara 和 Takao Sawachi：《基于示踪气体衰变实验的房间间空气交换特性评估方法第 2 部分应用于 F 的房间间空气交换特性评估方法》