https://scholars.lib.ntu.edu.tw/handle/123456789/87020
標題: | Size-dependent particulate matter indoor/outdoor relationships for a wind-induced naturally ventilated airspace | 作者: | Liao, Chung-Min Huang, Su-Jui Yu, Hsin |
關鍵字: | Deposition; Indoor/outdoor ratio; Modeling; Natural ventilation; Opening effectiveness; Particulate matter | 公開日期: | 2004 | 卷: | 39 | 期: | 4 | 起(迄)頁: | 411-420 | 來源出版物: | Building and Environment | 摘要: | We applied a simple size-dependent indoor air quality model associated with measured outdoors particulate matter (PM) profiles and potential loss mechanisms to characterize PM indoor/outdoor (I/O) relationships for wind-induced naturally ventilated residences in Taiwan region. The natural ventilation rate was quantified by the opening effectiveness for sidewall opening and covered ridge with sidewall-opening-type homes. The measured results demonstrate that integrated PM10 and PM2.5 mass concentrations for the urban area are 39.2 and 3.13 μg m-3, respectively, whereas for the suburban area are 75.76 and 69.87 μg m-3, respectively. The most significant removal mechanisms included natural ventilation through and particle deposition on indoor surfaces. The predicted average PM mass I/O ratios were 0.56 and 0.42 for PM2.5 and PM10, respectively. We also employed published data on mass-weighted size distributions for specific chemical constitutes of PM, sulfate and nitrate, to predict PM I/O ratios in the central Taiwan region; the resulting values ranged from 0.22 to 0.43 and 0.27 to 0.36 for sulfate and nitrate, respectively. Our results demonstrate that the PM I/O ratios for a wind-induced natural ventilated airspace depend strongly on the ambient particle distributions, building openings design (e.g. height-to-length ratio of openings and roof slope), wind speed, wind angle of incidence, and outdoor PM metrics. © 2003 Elsevier Ltd. All rights reserved. |
URI: | http://ntur.lib.ntu.edu.tw//handle/246246/175993 | DOI: | 10.1016/j.buildenv.2003.09.015 | SDG/關鍵字: | Air quality; Concentration (process); Particles (particulate matter); Size determination; Wind effects; Wind angle; Wind speed; Ventilation; building; indoor air; particulate matter; Ventilation; wind direction |
顯示於: | 生物環境系統工程學系 |
在 IR 系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。