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	Model study of the effective air exchange rate by fluctuating flow for natural ventilation
	Zhao, B ; Ouyang, Q ; Jiang, Y
	2010-05-10 ; 2010-05-10
会议名称	Indoor Air 2005: Proceedings of the 10th International Conference on Indoor Air Quality and Climate, Vols 1-5 ; 10th International Conference on Indoor Air Quality and Climate (Indoor Air 2005) ; Beijing, PEOPLES R CHINA ; Web of Science
关键词	natural ventilation effective air exchange rate fluctuating airflow BUILDINGS WIND Construction & Building Technology Engineering, Environmental Public, Environmental & Occupational Health
中文摘要	Fluctuating airflow may strongly influence the real air exchange rate of natural ventilation, leading to a larger "effective" air exchange rate than the "mean" air exchange rate by conventional methods, for example, the network method. To study the effective air exchange rate by natural ventilation for actual cases, theoretical analysis is performed to study the effective air exchange rate by fluctuating flow for natural ventilation in this paper. The theoretical approach analyze the influence of fluctuating airflow on the effective air exchange rate with a simple model, assuming the fluctuating airflow near the openings of the buildings is fluctuating regularly, that is, the velocity is assumed as square wave pattern or sine wave pattern. The analysis shows that the effective air exchange rate of natural ventilation by fluctuating flow is larger, which can not be simply calculated as mean air exchange rate without considering the fluctuating of the real airflow.
会议录出版者	TSINGHUA UNIVERSITY PRESS ; BEIJING ; TSINGHUA UNIVERSITY HAIDIANQU, BEIJING 100084, PEOPLES R CHINA
语种	英语 ; 英语
内容类型	会议论文
源URL	[http://hdl.handle.net/123456789/19772]
专题	清华大学
推荐引用方式 GB/T 7714	Zhao, B,Ouyang, Q,Jiang, Y. Model study of the effective air exchange rate by fluctuating flow for natural ventilation[C]. 见:Indoor Air 2005: Proceedings of the 10th International Conference on Indoor Air Quality and Climate, Vols 1-5, 10th International Conference on Indoor Air Quality and Climate (Indoor Air 2005), Beijing, PEOPLES R CHINA, Web of Science.

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