Effect of ventilation and filtration on submicrometer particles in an indoor environment

被引:62
作者
Jamriska, M
Morawska, L
Clark, BA
机构
[1] Queensland Univ Technol, Ctr Med & Hlth Phys, Brisbane, Qld, Australia
[2] Queensland Conservat Council, Brisbane, Qld, Australia
关键词
filtration; ventilation; submicrometer particles; indoor environment; modelling;
D O I
10.1034/j.1600-0668.2000.010001019.x
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
The effect of filtration and ventilation on reduction of submicrometer particle concentration indoors was investigated in an office building. The air-handling system consisting of dry media filters and an air-conditioning unit, reduced particle concentration levels by 34%. The characteristics of indoor airborne particles were dominated by, and followed the pattern of, outdoor air, with vehicle combustion aerosols as the main pollutant. The ratio indoor/outdoor particle concentration varied between 14 and 26% for different subzones. The presence of significant source of particles indoors was not observed. A simple mathematical model predicting evolution of particles indoors is presented. The model, based on a particle number balance equation, was validated with experimental data and showed very good agreement between predicted and measured parameters.
引用
收藏
页码:19 / 26
页数:8
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