Ye Jinjun, Lin Chen, Liu Jing, Ai Zhengtao, Zhang Guoqiang
Department of Building Environment and Energy, College of Civil Engineering, Hunan University, Changsha, Hunan, China.
National Center for International Research Collaboration in Building Safety and Environment, Hunan University, Changsha, Hunan, China.
Indoor Built Environ. 2022 May;31(5):1176-1192. doi: 10.1177/1420326X211061290.
Heating, Ventilation, and Air-Conditioning (HVAC) system that is almost indispensable service system of modern buildings is recognized as the most important engineering control measure against pandemics. However, the effectiveness of HVAC systems has been questioned on their ability to control airborne transmission. After the outbreak of COVID-19, China has controlled the spread within a relatively short period. Considering the large population, high population density, busy transportation and the overall underdeveloped economy, China's control measures may have some implications to other countries, especially those with limited resources. This paper intends to provide a systematic summary of Chinese ventilation guidelines issued to cope with COVID-19 transmission. The following three aspects are the main focus of these guidelines: (1) general operation and management schemes of various types of HVAC systems, (2) operation and management schemes of HVAC system in typical types of buildings, and (3) design schemes of HVAC system of makeshift hospitals. In addition, some important differences in HVAC guidelines between China and other countries/institutions are identified and compared, and the possible reasons are discussed. Further discussions are made on the following topics, including the required fresh air supply, the extended operation time, the use of auxiliary equipment, the limited capacity of existing systems, and the use of personalized systems.
供暖、通风与空调（HVAC）系统是现代建筑几乎不可或缺的服务系统，被视为应对大流行病最重要的工程控制措施。然而，HVAC系统控制空气传播的能力受到了质疑。新冠疫情爆发后，中国在相对较短的时间内控制住了疫情传播。鉴于中国人口众多、人口密度高、交通繁忙且整体经济欠发达，中国的防控措施可能对其他国家，尤其是资源有限的国家具有一定的启示意义。本文旨在系统总结中国为应对新冠病毒传播发布的通风指南。这些指南主要聚焦于以下三个方面：（1）各类HVAC系统的一般运行和管理方案；（2）典型建筑类型中HVAC系统的运行和管理方案；（3）方舱医院HVAC系统的设计方案。此外，还识别并比较了中国与其他国家/机构在HVAC指南方面的一些重要差异，并探讨了可能的原因。还对以下主题进行了进一步讨论，包括所需的新鲜空气供应、延长的运行时间、辅助设备的使用、现有系统的容量限制以及个性化系统的使用。
