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Study on the Influence of Air Tightness of the Building Envelope on Indoor Particle Concentration

Author

Listed:
  • Liang Yu

    (School of Municipal and Environmental Engineering, Shenyang Jianzhu University, Shenyang 110168, China)

  • Ning Kang

    (School of Municipal and Environmental Engineering, Shenyang Jianzhu University, Shenyang 110168, China)

  • Weikuan Wang

    (Shenyang Academy of Environmental Sciences, Shenyang 110179, China)

  • Huiyu Guo

    (School of Municipal and Environmental Engineering, Shenyang Jianzhu University, Shenyang 110168, China)

  • Jia Ji

    (Zhejiang Shilang Longshan Engineering Design Co. LTD, Zhejiang 310000, China)

Abstract

In order to grasp the building palisade structure tightness of indoor particulate matter mass concentration based on the particle penetration mechanism and settlement characteristics, this article analyzes the measurements of two different types of building air tightness of a Shenyang university office building in terms of indoor and outdoor particulate matter mass concentration levels from 2016-1-09 to 1-22, 2016-7-18 to 8-03, and 2017-2-28 to 3-13. The building outside the closed window that had no indoor source condition, the indoor office building and outdoor particle mass concentration, and the aperture size and shape of the envelope were analyzed to carry on the numerical simulation research by Fluent software, which was then analyzed; the results reveal that the measuring point of the I/O ratio is less than point B of the I/O ratio, measurement points of A linear regression fitting degree is lower than the fit of the measuring point B, and the causes for the measuring point A tightness (level 8) is superior to the measuring point B (level 4). When the gap height h is greater than 0.5 mm, the penetration rate of particles within the range of 0.25–2.5 μm particle size is close to 1. In different gap depths, the penetration rate of particles within the range of 0.1–1 μm particle size was close to 1. In diverse pressure difference, the 0.25–2.5 μm particles within the scope of penetration rate P is close to 1, the gap on both sides of the differential value ΔP; the greater the particle, the higher penetration rate. The larger the right-angle number of gap n, the lower the penetration rate of particles. The L-shaped gap and U-shaped gap have significantly better barrier effects in larger and smaller particles than the rectangular gap. The research results in this paper can help people understand and effectively control the influence of outdoor particles on the indoor air quality and provide reference data for the prediction of indoor particle mass concentration in buildings, which has theoretical basis and practical significance.

Suggested Citation

  • Liang Yu & Ning Kang & Weikuan Wang & Huiyu Guo & Jia Ji, 2020. "Study on the Influence of Air Tightness of the Building Envelope on Indoor Particle Concentration," Sustainability, MDPI, vol. 12(5), pages 1-20, February.
    • Handle: RePEc:gam:jsusta:v:12:y:2020:i:5:p:1708-:d:324882
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    Citations

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    Cited by:

    1. Dominik Bekierski & Krystyna Barbara Kostyrko, 2021. "The Influence of Outdoor Particulate Matter PM 2.5 on Indoor Air Quality: The Implementation of a New Assessment Method," Energies, MDPI, vol. 14(19), pages 1-30, September.
    2. Hyeon-Ju Oh & Jongbok Kim, 2020. "Monitoring Air Quality and Estimation of Personal Exposure to Particulate Matter Using an Indoor Model and Artificial Neural Network," Sustainability, MDPI, vol. 12(9), pages 1-20, May.

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