| Issue |
E3S Web of Conf.
Volume 396, 2023
The 11th International Conference on Indoor Air Quality, Ventilation & Energy Conservation in Buildings (IAQVEC2023)
|
|
|---|---|---|
| Article Number | 01114 | |
| Number of page(s) | 5 | |
| Section | Indoor Environmental Quality (IEQ), Human Health, Comfort and Productivity | |
| DOI | https://doi.org/10.1051/e3sconf/202339601114 | |
| Published online | 16 June 2023 | |
Analysis of the influence of pressure difference across building envelope on indoor particulate matter concentration
1 Department of Architectural Engineering, Inha University, Incheon, Korea
2 Division of Architecture, Inha University, Incheon, Korea
* Corresponding author: jhjo@inha.ac.kr
Outdoor PM2.5, penetrated by infiltration, has a continuous and important effect on indoor environments. To determine the infiltration rate, it is important to consider the airtightness level and pressure difference across an envelope. This study investigated the influence of pressure difference and airtightness on indoor PM2.5 in a residential building with natural ventilation. Field measurements were conducted in eight residential households. The indoor and outdoor PM2.5 concentrations and pressure differences across the envelope were measured simultaneously. The airtightness of each unit was determined via a blower door test. As a result, the indoor PM2.5 concentration exhibited a significant correlation with airtightness and envelope pressure difference. However, the correlation between the PM2.5 I/O ratio and the pressure difference was found to weaken as the airtightness decreased. This appears to be influenced more by other external factors in addition to pressure under loose airtightness conditions. Thus, the influence of the factors on the penetration of PM2.5 can vary depending on the airtightness of the envelope.
© The Authors, published by EDP Sciences, 2023
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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