摘要：Electret media have the advantage of enhancing the particle collection efficiency while keeping/reducing the media pressure drop by the electrostatic mechanisms in addition to the mechanical ones. This study investigated the effect of operational pressure on the filtration performance of electret filter media. Experiments was conducted at the pressures in the range of 0.33-3 atm and using DMA-classified particles ranging in electrical mobility sizes of 10-600 nm. The penetration of particles in the neutral, singly charged and Fuchs' bipolar charge states of two electret media (both charged and discharged) were measured. The single fiber efficiency due to the induced and Coulombic forces, i.e., eta In and eta C, were obtained. It is found that both efficiencies are a function of the filtration pressure (i.e., fiber Kn#) in addition to those parameters already included in existing models. A simple modification was also proposed for the existing model (based on the single fiber theory), enabling it to predict the particle collection efficiency of electret media operated under various filtration pressures.

关键字：Electret media; Charged fibrous media; Filtration pressure; Aerosol filtration; Particle penetration

ISSN号：1680-8584

卷、期、页：卷: 23期: 2

发表日期：2023-02-01

影响因子：0.000000

期刊分区（SCI为中科院分区）：四区

收录情况：SCI（科学引文索引印刷版）,EI（工程索引）,SCIE（科学引文索引网络版）

发表期刊名称：AEROSOL AND AIR QUALITY RESEARCH

参与作者：Chen, Da-Ren

通讯作者：牛庆贺,门萨

第一作者：刘震,姬忠礼

论文类型：期刊论文

论文概要：刘震,Chen, Da-Ren,牛庆贺,门萨,姬忠礼，Particle Collection of Electret Media under Different Filtration Pressures，AEROSOL AND AIR QUALITY RESEARCH，2023，卷: 23期: 2

论文题目：Particle Collection of Electret Media under Different Filtration Pressures