Size-Dependent PM sub(10) Indoor/Outdoor/Personal Relationships for a Wind-Induced Naturally Ventilated Airspace

• Published in: Atmospheric environment (1994) Vol. 37; no. 22; p. 3065
• Main Authors: Liao, Chung-Min, Chen, Jein-Wen, Huang, Su-Jui
• Format: Journal Article
• Language: English
• Published: 01.07.2003
• ISSN: 1352-2310
• DOI: 10.1016/S1352-2310(03)00291-7

The indoor/outdoor PM sub(10) ratios were calculated for a wind-induced naturally ventilated airspace, taking into consideration the size-dependent effects on indoor PM sub(10) levels. An opening effectiveness model was employed to quantify the wind-induced natural ventilation for sidewall openings and covered ridge with sidewall openings. For sidewall opening and covered ridge with sidewall opening homes, which are found commonly in Taiwan, the PM sub(10) mass indoor/outdoor ratios ranged 0.150.24 and 0.200.32, respectively. Comparison of the human respiratory tract deposition data with the theoretical predictions revealed that the predictions were in good agreement with the experimental deposition profiles in lung regions. The extrathoracic region had higher PM sub(10) mass lung/indoor ratios than did the bronchialbronchiolar and the alveolarinterstitial regions.