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.

近年来，全球范围内爆发了大量呼吸道传染病（尤其是COVID-19）。空气中可能会释放呼吸道传染性病毒，造成患者和医务人员之间的交叉感染。可以调整室内通风系统以影响含有病毒的细颗粒。本研究旨在进行一系列实验，以评估通风性能，并评估医护人员 (HW) 在密闭实验室中接触患者释放的载有病毒颗粒的情况。在典型的病房环境中，评估了四个类别（顶部送风和排气、侧面送风和排气），包括 16 种不同的空气分配模式。HW 的累积暴露水平最大降低为 70。通风策略 D 中为 8%（侧壁供应的上扩散器和同一侧壁返回的下扩散器）。靠近与策略 E 相关的污染源的患者的累积暴露水平的最小值（侧壁供应的上扩散器和相对侧壁返回的下扩散器）。侧向通风策略可以为病房操作提供重要指导，以最大限度地减少空气传播的病毒污染。本研究可为可持续建筑构建健康的室内环境提供参考。侧向通风策略可以为病房操作提供重要指导，以最大限度地减少空气传播的病毒污染。本研究可为可持续建筑构建健康的室内环境提供参考。侧向通风策略可以为病房操作提供重要指导，以最大限度地减少空气传播的病毒污染。本研究可为可持续建筑构建健康的室内环境提供参考。