Abstract The electrostatic effect can significantly increase filtration efficiency of a fibrous filter. Numerical tools for the performance evaluation or design of electrostatic enhanced filtration system are lacking. This study developed a numerical model to simulate the performance of an electrostatic enhanced filtration system. The model considered all the physical phenomena in a filtration system: the corona discharge, air flow, particle charging, particle motion and filtration. Measured data from previous studies were used for model validation. The validated numerical method was then used to investigate the influence of filter structure parameters on the performance of electrostatic enhanced pleated filter. The filtration efficiency and energy consumption were evaluated. The effects of pleat distance, pleat height, applied voltage, and discharge wire position were examined. The results show that EEAF with shorter pleat distance and greater pleat height has higher efficiency. An increase in applied voltage raises both the efficiency and the electrical energy consumption. Filter performance is also sensitive to discharge wire placement. Overall, the numerical model developed here is a powerful tool for the design of electrostatic enhanced pleated filtration system.

中文翻译：

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通过数值方法评估静电增强型空气过滤器 (EEAF) 的性能

摘要 静电效应可以显着提高纤维过滤器的过滤效率。缺乏用于静电增强过滤系统性能评估或设计的数值工具。本研究开发了一个数值模型来模拟静电增强过滤系统的性能。该模型考虑了过滤系统中的所有物理现象：电晕放电、气流、粒子充电、粒子运动和过滤。先前研究的测量数据用于模型验证。然后使用经过验证的数值方法研究过滤器结构参数对静电增强折叠过滤器性能的影响。评估过滤效率和能耗。褶皱距离、褶皱高度、施加电压的影响，和放电线位置进行了检查。结果表明，具有较短褶距和较大褶皱高度的EEAF具有更高的效率。施加电压的增加提高了效率和电能消耗。过滤器的性能也对放电线的放置很敏感。总的来说，这里开发的数值模型是设计静电增强折叠过滤系统的有力工具。