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Influence of the Internal Structure Type of a Large-Area Lower Exhaust Workbench on Its Surface Air Distribution

Author

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  • Jianwu Chen

    (School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, China
    Institute of Occupational Health, China Academy of Safety Science and Technology, Beijing 100012, China)

  • Longzhe Jin

    (School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, China)

  • Bin Yang

    (School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, China
    Institute of Occupational Health, China Academy of Safety Science and Technology, Beijing 100012, China)

  • Zhenfang Chen

    (Institute of Occupational Health, China Academy of Safety Science and Technology, Beijing 100012, China)

  • Guoliang Zhang

    (School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, China)

Abstract

Local exhaust ventilation is an important method of contamination control, and the type of exhaust hood and the air distribution at the hood face have an important influence on the contamination control effect. When the hood face is large, it is difficult to create a uniform airflow distribution at the hood face, which if achieved, could improve the effect of contamination control. To that end, the large-area workbench used in the process of vaccine purification was taken as the research subject prototype for this study. According to the methods for generating a uniform airflow distribution at the hood face, the lower exhaust workbenches of four structures were established using CAD and simulated using Ansys Fluent. The best uniformity of workbench surface air distribution was with Structure-4, while the worst was with Structure-1. The workbench surface airflow distribution could not achieve uniformity when only an inclined bottom was used for the large-area lower exhaust workbench with one side outlet. The more internal slits there were, the greater the air distribution area and the more uniform the air distribution. The width of the area of workbench surface airflow distribution was determined by the width of the slits. The numerical simulation results were verified by experiments, which showed them to be credible.

Suggested Citation

  • Jianwu Chen & Longzhe Jin & Bin Yang & Zhenfang Chen & Guoliang Zhang, 2022. "Influence of the Internal Structure Type of a Large-Area Lower Exhaust Workbench on Its Surface Air Distribution," IJERPH, MDPI, vol. 19(18), pages 1-14, September.
    • Handle: RePEc:gam:jijerp:v:19:y:2022:i:18:p:11395-:d:911666
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    References listed on IDEAS

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    1. Wang, Yi & Quan, Mengfan & Zhou, Yu, 2019. "Effect of velocity non-uniformity of supply air on the mixing characteristics of push-pull ventilation systems," Energy, Elsevier, vol. 187(C).
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    Cited by:

    1. Lindong Liu & Cuifeng Du & Yuan Wang & Jianwu Chen & Bin Yang & Weibo Jin, 2023. "Simulation Experiment Research of Mine Roadway Simulating Test Device with Adjustable Wind Velocity and Temperature and Humidity," IJERPH, MDPI, vol. 20(5), pages 1-11, February.
    2. Yu Haibo & Zhang Lei & Yu Haiye & Liu Yucheng & Liu Chunhui & Sui Yuanyuan, 2023. "Sustainable Development Optimization of a Plant Factory for Reducing Tip Burn Disease," Sustainability, MDPI, vol. 15(6), pages 1-16, March.

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