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Numerical Study on Pollutant Removal Performance of Vortex Ventilation in Different Pollutant Locations

  • Zhixiang CaoEmail author
  • Chao Zhai
  • Tongtong Zhao
  • Yi Wang
Conference paper
  • 240 Downloads
Part of the Environmental Science and Engineering book series (ESE)

Abstract

This study presents the flow trajectory, pollutant distribution of vortex ventilation with different pollutant source locations. It turns out that due to pressure gradient of column vortex, the pollutant can be inhaled by the vortex after releasing when the sources are in the vortex zone. Meanwhile, due to the obvious tangential velocity and radial velocity of the column vortex, the flow trajectory of pollutant in vortex ventilation is close to a logarithmic spiral, which means that the farther the pollutant source from the vortex center, the longer the path of pollutant is, and the larger the pollution range is. The results indicate that the pollutant source should be in the range of vortex zone in the design, and it will reach the best performance when the pollutant source is just near the vortex core.

Keywords

Vortex ventilation Air distribution Ventilation effectiveness Pollutant removal 

Notes

Acknowledgements

This work was supported by the National Key Research and Development Program of China (Grant No. 2018YFC0705300), the National Science Fund for Distinguished Young Scholars of China (No. 51425803) and Shaanxi Provincial Key Science and Technology Innovation Team (2017KCT-14).

References

  1. 1.
    Wang, Y., Cao, Z.X.: Industrial building environment: old problem and new challenge. Indoor Built Environ. 26, 1035–1039 (2017)CrossRefGoogle Scholar
  2. 2.
    Wang, H.Q., et al.: Fume transports in a high rise industrial welding hall with displacement ventilation system and individual ventilation units. Build. Environ. 52, 119–128 (2012)CrossRefGoogle Scholar
  3. 3.
    Cao, G.Y., et al.: A review of the performance of different ventilation and airflow distribution systems in buildings. Build. Environ. 73, 171–186 (2014)CrossRefGoogle Scholar
  4. 4.
    Cao, Z.X., et al.: Comparison between vortex flow and bottom-supply flow on contaminant removal in a ventilated cavity. Int. J. Heat Mass Transf. 118, 223–234 (2017)CrossRefGoogle Scholar
  5. 5.
    Cao, Z.X., et al.: Performance evaluation of different air distribution systems for removal of concentrated emission contaminants. Build. Environ. 142, 211–220 (2018)CrossRefGoogle Scholar
  6. 6.
    Sandberg, M.: What is ventilation efficiency? Build. Environ. 16, 123–135 (1981)CrossRefGoogle Scholar

Copyright information

© Springer Nature Singapore Pte Ltd. 2020

Authors and Affiliations

  1. 1.State Key Laboratory of Green Building in Western China, Xi’anUniversity of Architecture and TechnologyXi’anChina
  2. 2.School of Environmental and Municipal EngineeringXi’an University of Architecture and TechnologyXi’anChina

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