Test and Analysis of Outdoor PM2.5 Blocking and Air Exchange Performance of Anti-haze Window Screen
- DOI
- 10.2991/978-94-6463-728-1_50How to use a DOI?
- Keywords
- Indoor air quality; Penetration factor; Indoor/outdoor concentration ratio
- Abstract
Atmospheric PM2.5 pollution has been very serious in many areas of China in recent years, jeopardizing human health. Human exposure to PM2.5 occurs primarily indoors, and reducing indoor PM2.5 concentrations is an important way to reduce human exposure to PM2.5. When the atmospheric PM2.5 concentration is high, people tend to close doors and windows tightly to reduce the indoor PM2.5 concentration, but this also reduces the number of air exchanges between the room and the outdoors, so that other indoor sources of gas-phase pollutants can not diffuse in time. To this end, the market launched a nuclear pore membrane technology anti-haze screen, claiming that the efficient blocking of PM2.5 at the same time can allow gas molecules to pass freely, which can be a highly efficient gas exchange, and has attracted widespread attention. In this study, the air permeability and filtration performance of anti-haze screens were examined in an environmental chamber, and the concentration status of indoor and outdoor PM2.5 in the residence before and after the application of anti-haze screens on hazy days and the number of air changes in the room were monitored in the field. The results show that the overall PM2.5 penetration coefficient of the room after applying anti-haze screens is 0.15–0.21, which is smaller than the PM2.5 penetration coefficient (0.55–0.59) when anti-haze screens are not applied, indicating that the anti-haze screens have a certain effect of blocking outdoor PM2.5 under the condition of severe outdoor pollution. However, it was measured that the average air exchange capacity of anti-haze screens was 0.18m3/m2/min, which could not reach the air exchange capacity of 0.9m3/m2/min as stated in the product publicity on hazy days and could not satisfy the air exchange capacity specified in the indoor air quality standard (30m3/h/person).
- Copyright
- © 2025 The Author(s)
- Open Access
- Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.
Cite this article
TY - CONF AU - Yufei He AU - Menglong Zhang AU - Jianwu Xiong AU - Yin Zhang PY - 2025 DA - 2025/05/19 TI - Test and Analysis of Outdoor PM2.5 Blocking and Air Exchange Performance of Anti-haze Window Screen BT - Proceedings of the 3rd International Conference on Green Building, Civil Engineering and Smart City (GBCESC 2024) PB - Atlantis Press SP - 509 EP - 519 SN - 2352-5401 UR - https://doi.org/10.2991/978-94-6463-728-1_50 DO - 10.2991/978-94-6463-728-1_50 ID - He2025 ER -