通风用空气过滤器的细颗粒物（PM2．5）过滤效率研究

摘要

鉴于在考虑采取通风措施降低室内空气PM2．5浓度时，面临不掌握空气过滤器的PM2．5过滤效率的困惑，以在相同的、规范的试验条件下得到的不同材质、不同过滤效率的多台空气过滤器的计数计径过滤效率和PM2．5计重过滤效率的测试数据为基础，分析探讨了2种过滤效率之间的关系，为空调通风系统针对室内PM2．5计重浓度的空气过滤器选型提供了初步依据。%There are some difficulties in choosing suitable air filters because of the lack of PM2 .5 filtration efficiency of the air filters when reducing the indoor PM2.5 concentration by ventilation system. Based on the data of the particle counting and sizing filtration efficiency and the PM2 .5 arrestance filtration efficiency of different air filters obtained under the same and standard testing conditions,analyses the relationship between the two kinds of filtration efficiency.The results provide preliminary basis for choosing air filters of air conditioning and ventilation systems at different PM2 .5 arrestance concentrations.