空气过滤器在邮轮预防新冠疫情中的应用

A Discussion on the Application of Air Filters in Preventing COVID-19 Epidemic Onboard Cruise Vessels

通过监测证明邮轮上存在新型冠状病毒通过气溶胶进行空气传播的风险,并论证采取高级别空气过滤器降低该风险的技术方案的可行性。采用WM-B600型在线气溶胶监测设备对邮轮上典型密闭公共场所中的气溶胶含量进行实时监控,发现被监测的场所出现周期性的气溶胶质量浓度急剧上升的情况,且与船上用餐、集会和登船等人员聚集在场所内的时间相吻合,证实船上存在病毒通过气溶胶进行空气传播的风险;通过分析常见预防措施的适用性,论证在船上采用高级别空气过滤器是预防病毒传播的有效措施。在此基础上,给出通过升级现有邮轮隔离区等高风险区域的中央空调系统空气过滤器等级预防病毒在船上通过空气传播的实船应用方案。

This article is to prove that there is a risk of airborne transmission of COVID-19 through aerosol on board cruise vessel and to demonstrate the technical solution to reduce this risk by adopting high-level air filters.The WM-B600 online aerosol monitor was used to monitor the aerosol content in the typical enclosed public areas in real time.It was found that the periodic aerosol concentration rose sharply in these areas during boarding,meal and meeting,so the risk of airborne transmission of COVID-19 through aerosols on board was confirmed.After analyzing the applicability of common preventive measures,the high-level air filter is identified to be an effective preventive measure on board.On this basis,a modification plan of upgrading the air filter of the HAVC(Heating,Ventilation and Air Conditioning)system in high-risk areas of the ship was put forward to prevent and reduce the risk of air transmission of COVID-19.