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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

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DOI: 10.4209/aaqr.2018.08.0321
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Yan Wang1, Angui Li1, Xiaowei Fan 2, Liangyue Shang2

  • 1 School of Environmental and Municipal Engineering, Xi’an University of Architecture and Technology, Xi’an, Shaanxi 710055, China
  • 2 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 aluminum cubic experimental chamber has been built to obtain the deposition loss rate coefficients of 0.37, 0.54, 0.75, 0.9, 1.3, and 1.6 μm particles under three different airflow conditions. Eight curtain fabrics including four window voile fabrics and four curtain cloths were selected as the deposition surfaces to investigate 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 particle size have an effect on the deposition loss rate coefficient. The trend of deposition loss rate coefficient with the increase of inter-yarn porosity is different from that with the increase of inter-fiber porosity.

Keywords

Deposition loss rate coefficient Curtain Fine Particle Fabric Porosity


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