Effectiveness of HVAC filters and room air purifiers in mitigating indoor participate matter

摘要

As the COVID-19 pandemic has spread and made its impact worldwide, air filtration has risen to prominence as a potential solution to the spread of viral contagions, as well as in addressing air pollution in general. In the United States, high-efficiency HVAC filters and RAPs (room air purifiers) are widely used for mitigating indoor particulate matters and combating the pandemic. However, some critical questions still need to be answered. How efficient are HVAC filters at capturing virus particles? How effective are HVAC filters and RAPs at reducing indoor particulate matters? What is the energy impact of high efficiency HVAC filters? Researchers from 3M, Emerson and LMS Technologies have recently collaborated in a series of scientific studies to answer these critical questions. Their research results will be published in series of articles in International Filtration News. The following article is Part Ⅱ in this series.