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Effects of Internal Partitions on Flow Field and Air Contaminant Distribution under Different Ventilation Modes

Author

Listed:
  • Xiaoping Liu

    (School of Civil Engineering, Hefei University of Technology, Hefei 230009, China)

  • Xiaojiao Wu

    (School of Civil Engineering, Hefei University of Technology, Hefei 230009, China)

  • Linjing Chen

    (School of Civil Engineering, Hefei University of Technology, Hefei 230009, China)

  • Rui Zhou

    (Department of Engineering Physics, Institute for Public Safety Research, Beijing Key Laboratory of City Integrated Emergency Response Science, Tsinghua University, Beijing 100084, China)

Abstract

Based on frequently used internal partitions in offices, the effects of pollutant source characteristics and an internal partition on airflow and contaminant distribution under different ventilation modes are studied in this paper. The indoor flow field measurement is implemented in a 1:1 single environmental chamber under different ventilation patterns, and then the numerical model is established. The numerical method is verified and analyzed by comparing the measured and simulated results. According to the verification results, the numerical simulation is introduced to study the influence of different supply and return air mixes and pollutant source distributions on the flow field and diffusion performance with an internal partition. The indoor flow field and concentration distribution under different conditions are compared, and the discharge efficiency under different working conditions is analyzed. The results indicate that internal partitions have a greater influence on the down-supply up-return ventilation mode than the floor-supply up-return and top-supply down-return ventilation mode. Furthermore, if the room is zoned, the effect of source position is larger under the down-supply up-return ventilation mode than under the other two modes.

Suggested Citation

  • Xiaoping Liu & Xiaojiao Wu & Linjing Chen & Rui Zhou, 2018. "Effects of Internal Partitions on Flow Field and Air Contaminant Distribution under Different Ventilation Modes," IJERPH, MDPI, vol. 15(11), pages 1-15, November.
    • Handle: RePEc:gam:jijerp:v:15:y:2018:i:11:p:2603-:d:184503
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    References listed on IDEAS

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    1. Peter Wallner & Ute Munoz & Peter Tappler & Anna Wanka & Michael Kundi & Janie F. Shelton & Hans-Peter Hutter, 2015. "Indoor Environmental Quality in Mechanically Ventilated, Energy-Efficient Buildings vs. Conventional Buildings," IJERPH, MDPI, vol. 12(11), pages 1-16, November.
    2. Allison P. Patton & Leonardo Calderon & Youyou Xiong & Zuocheng Wang & Jennifer Senick & MaryAnn Sorensen Allacci & Deborah Plotnik & Richard Wener & Clinton J. Andrews & Uta Krogmann & Gediminas Main, 2016. "Airborne Particulate Matter in Two Multi-Family Green Buildings: Concentrations and Effect of Ventilation and Occupant Behavior," IJERPH, MDPI, vol. 13(1), pages 1-20, January.
    3. Camilla Vornanen-Winqvist & Heidi Salonen & Kati Järvi & Maria A. Andersson & Raimo Mikkola & Tamás Marik & László Kredics & Jarek Kurnitski, 2018. "Effects of Ventilation Improvement on Measured and Perceived Indoor Air Quality in a School Building with a Hybrid Ventilation System," IJERPH, MDPI, vol. 15(7), pages 1-18, July.
    4. Lee, Heekwan & Awbi, Hazim B., 2004. "Effect of internal partitioning on room air quality with mixing ventilation—statistical analysis," Renewable Energy, Elsevier, vol. 29(10), pages 1721-1732.
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    Cited by:

    1. Xiaoping Liu & Zhen Peng & Xianghua Liu & Rui Zhou, 2019. "Dispersion Characteristics of Hazardous Gas and Exposure Risk Assessment in a Multiroom Building Environment," IJERPH, MDPI, vol. 17(1), pages 1-18, December.

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