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Effects of Surface Properties of Vertical Textiles Indoors on Particle Deposition: A Small-scale Chamber Study

Category: Air Pollution and Health Effects

Volume: 19 | Issue: 4 | Pages: 885-895
DOI: 10.4209/aaqr.2018.08.0321
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Yan Wang1, Angui Li1, Xiaowei Fan 2, Shiyan Lu3, Liangyue Shang3

  • 1 School of Environmental and Municipal Engineering, Xi’an University of Architecture and Technology, Xi’an, Shaanxi 710055, China
  • 2 Department of Architectural Engineering, Jiyuan Vocational and Technical College, Jiyuan, Henan 459000, China
  • 3 School of Energy and Environmental Engineering, Zhongyuan University of Technology, Zhengzhou, Henan 450007, China

Highlights

  • The deposition rate can be significantly affected by airspeed and particle size.
  • The particle deposition was just slightly affected by the inter-yarn porosity.
  • There is no specific correlation between deposition rate and inter-fiber porosity.
  • The deposition rate vs. inter-yarn porosity increases firstly and then decreases.

Abstract

The present study aims to further understand the effect of surface properties of vertical textiles indoors on the particle deposition. A 512 L cubic aluminum experimental chamber was built to obtain the deposition loss rate coefficients for 0.37, 0.54, 0.75, 0.9, 1.3, and 1.6 µm particles under three different airflow conditions. Eight curtain fabrics—four window voile fabrics and four curtain cloths—were selected as the deposition surfaces in investigating the effect of fabric porosity on particle deposition. The total fabric porosity can be roughly divided into inter-yarn porosity and inter-fiber porosity. The experimental results reveal that both the near-surface airflow velocity and the particle size affect the deposition loss rate coefficient. The trend of the deposition loss rate coefficient with increasing inter-yarn porosity differs from that with increasing inter-fiber porosity.

Keywords

Deposition loss rate coefficient Curtain Fine particle Fabric Porosity


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