Field measurement of particle-size dependency in concentration changes of indoor particulate matter during ventilation with opening window

被引：0

作者：

Kikumoto H. ^{[1
]}

Ooka R. ^{[1
]}

机构：

[1] Institute of Industrial Science, University of Tokyo

来源：

Journal of Environmental Engineering (Japan) | 2016年 / 81卷 / 730期

基金：

日本学术振兴会;

关键词：

Air quality; I/O ratio; Natural ventilation; Particles diameter; Particulate matter;

D O I：

10.3130/aije.81.1127

中图分类号：

学科分类号：

摘要：

We conducted a field study to measure particulate matter (PM) concentrations for particles with diameters ranging from 03 to 10 μm in size. The study was conducted ma room of an office building i n Tokyo, over a three -week period. Occupan ts in the room utilized natural ventilation by manually opening a window. Because the outdoor PM had a higher concentration than that indtx)rs, employing natural ventilation leads to larger IndootfOutdoor (I/O) concentration ratios. Increases (decreases) in PM concentrations wen: observed just after opening (closing) th: Window. Concentration changes were even more remarkable for PM consisting of larger particle size. We found that this particle-size dependency in the concentration changes caused by the natural ventilation could be explained quantitatively in teims of thcdtfference in the gravity-settlement velocity of the particles.

引用

页码：1127 / 1136

页数：9

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