期刊
SUSTAINABLE CITIES AND SOCIETY
卷 73, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.scs.2021.103102
关键词
Cross-infection; Side return air distribution; Ventilation performance; Particulate matter; Exposure control
资金
- Natural Science Foundation of Hebei Province, China [E2020202147]
- Hebei Province Funding Project for Returned Scholars, China [C20190507]
- Fundamental Research Funds of Hebei University of Technology [JBKYTD2003]
- Shenzhen Science and Technology Innovation Commission, China [JCYJ20170818095706389]
This study conducted experiments to evaluate the impact of different ventilation strategies on healthcare workers' exposure to virus-laden particles, finding that lateral ventilation strategies can effectively reduce airborne virus contamination. This can provide important guidance for ward operations and serve as a reference for constructing a healthy indoor environment in sustainable buildings.
In recent years, a large number of respiratory infectious diseases (especially COVID-19) have broken out worldwide. Respiratory infectious viruses may be released in the air, resulting in cross-infection between patients and medical workers. Indoor ventilation systems can be adjusted to affect fine particles containing viruses. This study was aimed at performing a series of experiments to evaluate the ventilation performance and assess the exposure of healthcare workers (HW) to virus-laden particles released by patients in a confined experimental chamber. In a typical ward setting, four categories (top supply and exhaust, side supply and exhaust) were evaluated, encompassing 16 different air distribution patterns. The maximum reduction in the cumulative exposure level for HW was 70.8% in ventilation strategy D (upper diffusers on the sidewall supply and lower diffusers on the same sidewall return). The minimum value of the cumulative exposure level for a patient close to the source of the contamination pertained to Strategy E (upper diffusers on the sidewall supply and lower diffusers on the opposite sidewall return). Lateral ventilation strategies can provide significant guidance for ward operation to minimizing the airborne virus contamination. This study can provide a reference for sustainable buildings to construct a healthy indoor environment.
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