北京冬季某静电净化器新风净化性能研究
Outdoor air purification performance of an electrostatic precipitator in Beijing winter
摘要：
对北京冬季（2015年11月至2016年1月）某静电净化器新风净化性能进行了连续2个月的性能测试。主要研究了积尘前后对0.01~5 μm粒径颗粒物的净化效果；在不同室外环境下测试了积尘前后的臭氧产生情况，分析了臭氧超标原因；研究了初始未积尘的静电净化器在2个月内连续净化新风时效率的衰减情况。结果表明：该静电净化器净化效率受集尘板积尘和环境颗粒物浓度影响，集尘板积尘时效率下降，且环境颗粒物浓度越低，净化效率随时间下降越快。新风温度较低（＜-2 ℃）、PM2.5浓度较高（＞160 μg/m3）时，产生的臭氧增多。根据实测结果给出了使用静电净化器的注意事项。
Abstract：
Conducts a two-month test on outdoor air purification performance of a commercial electrostatic precipitator (ESP) in Beijing winter (from September 2015 to January 2016).Mainly studies the purification efficiency of particles (0.01 to 5 μm) before and after dust accumulation, and the ozone generation under different environment parameters before and after dust accumulation, the cause for the exceeding ozone generation, and the decline of efficiency during the two-month operating of ESP. The results show that the purification efficiency of the ESP is influenced by dust accumulation on collecting plates and ambient particle concentration. The purification efficiency decreases as dust accumulates on collecting plates, and the lower the ambient particle concentration, the faster the decrease of the purification efficiency. The amount of ozone increases when the temperature of outdoor air is lower than -2 ℃ and the concentration of PM2.5 is higher than 160 μg/m3. Presents several attention points of ESP application based on the measured results.
Keywords:electrostatic precipitator, outdoor air purification, dust accumulation, long term performance, ozone, purification efficiency