估计CO2传感器网络的空气变化率在工作场所的COVID-19爆发
Shinji Yokogawa1, Yo Ishigaki2, Hiroko Kitamura3
1Info-Powered Energy System Research Center (i-PERC), University of Electro-communications, Tokyo, Japan.
在与冠状病毒疾病 (COVID-19) 集群相关的工作场所,每小时低空气变化 (ACH). 通过打开窗户改善通风,显著增加了ACH,有助于制疫情.
科学领域:
- 环境健康 环境健康
- 传染病流行病学 传染病流行病学
- 建筑科学 建筑科学
背景情况:
- 工作场所可以容纳诸如冠状病毒病 (COVID-19) 等传染病的集群.
- 透气,以每小时空气变化 (ACH) 来衡量,是控制空气传播病原体传播的关键因素.
- 了解ACH对于评估和缓解共享室内环境中的疾病传播至关重要.
研究的目的:
- 测量COVID-19爆发的大型工作场所 (880平方米) 每小时的空气变化 (ACH).
- 评估整治工作,特别是自然通风对ACH的影响.
- 建立ACH水平和COVID-19传播动态之间的定量联系.
主要方法:
- 部署二氧化碳传感器网络来监测空气质量.
- 使用通用线性混合模型分析传感器数据.
- 在通风改进之前和之后,在不同工作场所的隔间估计ACH.
主要成果:
- 在COVID-19爆发期间的初始ACH水平从0.408到1.178 / 小时不等,表明通风不良.
- 通风不平衡,可能因内部隔离而加剧.
- 为自然通风打开窗户显著增加了ACH,达到1.8352.551 /小时.
结论:
- 低于2小时的ACH率被确定为COVID-19集群发展的关键因素.
- 加强通风,即使通过打开窗户等简单措施,也有效地控制了COVID-19的传播.
- 保持足够的ACH对于防止职业环境中传染病爆发至关重要.
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