桌面式空气窗对呼吸道气溶暴露风险减轻在面对面会议设置中的影响
Yinshuai Feng1, Yu Feng2, Yifan Fan1
1College of Civil Engineering and Architecture, Zhejiang University, Hangzhou, China; International Research Center for Green Building and Low-Carbon City, International Campus, Zhejiang University, Haining, China.
Journal of hazardous materials
|August 7, 2024
概括
空气窗可以显著降低面对面会议期间空气传播疾病传播的风险. 战略位置和空气流的设置是最大限度地保护病毒载有气溶的关键.
科学领域:
- 流体动力学 流体动力学
- 气溶科学是一门气溶科学.
- 公共卫生工程 公共卫生工程
背景情况:
- 面对面的会议对短距离气溶疾病传播的风险很高.
- 现有的通风系统可能无法完全减轻在会议桌上直接暴露于传染性气溶的风险.
研究的目的:
- 评估空气窗在减少会议期间直接暴露于带有病毒的气溶中的有效性.
- 为了确定最佳的空中窗配置,以减轻空中传播风险.
主要方法:
- 开发了一个模拟气溶分散的数值模型,并通过实验数据进行验证.
- 一个具有动态网格模拟头部运动的3D热力玩偶.
- 模拟分析了各种空气布的位置,速度和配置.
主要成果:
- 头部运动,如点头,可以增加高达74%的暴露风险.
- 一个单一的空气窗在放置在桌子中间时最有效.
- 双重空气窗显示,随着间距的增加,风险降低更大;更高的速度和宽度比增加窗数量更有效.
结论:
- 安装在桌面上的空气窗在室内会议环境中提供了有效的预防措施,防止空气传播.
- 最佳的空气窗设置取决于场景,呼吸的速度适度,咳的速度更高.
- 空气窗提供了额外的保护措施,不需要对现有的通风基础设施进行修改.
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