Ultraviolet germicidal irradiance (UVGI) - photocatalytic oxidation (PCO) for COVID-19 risk mitigation: a hybrid technique to develop effective antiviral air purification systems

用于缓解 COVID-19 风险的紫外线杀菌辐照度 (UVGI) - 光催化氧化 (PCO)：一种开发有效抗病毒空气净化系统的混合技术

• 批准号: 553983-2020
• 负责人: Zhong, Lexuan
• 金额: $ 3.64万
• 依托单位: University of Alberta
• 依托单位国家: 加拿大
• 项目类别: Alliance Grants
• 财政年份: 2020
• 资助国家: 加拿大
• 起止时间: 2020-01-01 至 2021-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=704678
• 关键词: Ultraviolet; germicidal; irradiance; UVGI; photocatalytic

This research program brings together experts from the University of Alberta and heating, ventilation, and air conditioning (HVAC) industry to develop advanced in-duct antiviral air purifier systems in buildings. Though the ultraviolet germicidal irradiance (UVGI) has been known for a long time, a lack of conclusive testing data makes it hard to demonstrate the effectiveness of UVGI. In addition, the high airflow for in-duct UVGI equipment employed in air-handling units can lead to the low UV dose and thus low efficiency. This research addresses how the UVGI efficiency on virus inactivation could be maximized in conjugation with photocatalytic oxidation (PCO) technology that provides hydroxyl radicals. This research program will examine: 1) feasibility of the hybrid UVGI-PCO technologies for virus inactivation; 2) design criteria for an optimal antiviral air purifier for efficient virus inactivation; and 3) effectiveness of antiviral air purifier system on the cross-infection reduction. This research directly aligns with the visions of the fund, in particular, to design advanced COVID-19-relevant equipment to mitigate the COVID-19 virus spread in buildings. The results have local, national and international applicability. Therefore, this work will provide essential engineering measures to address the COVID-19 emergency while having implications to treat and mitigate future health crises.

该研究项目汇集了阿尔伯塔大学和供暖、通风和空调 (HVAC) 行业的专家，开发先进的建筑物内管道抗病毒空气净化器系统。尽管紫外线杀菌辐照度（UVGI）早已为人所知，但由于缺乏确凿的测试数据，很难证明UVGI的有效性。此外，空气处理装置中采用的管道内 UVGI 设备的高气流可能导致紫外线剂量低，从而导致效率低。这项研究探讨了如何在与提供羟基自由基的光催化氧化 (PCO) 技术结合时最大限度地提高 UVGI 灭活病毒的效率。该研究计划将研究：1）混合UVGI-PCO技术用于病毒灭活的可行性； 2）最佳抗病毒空气净化器的设计标准，以有效灭活病毒； 3）抗病毒空气净化系统对减少交叉感染的有效性。这项研究与该基金的愿景直接一致，特别是设计先进的 COVID-19 相关设备，以减轻 COVID-19 病毒在建筑物中的传播。研究结果具有地方、国家和国际的适用性。因此，这项工作将为解决 COVID-19 紧急情况提供必要的工程措施，同时对治疗和减轻未来的健康危机产生影响。