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The widely utilized high efficient particulate air filters (HEPA) lead to high building energy consumption. Indoor particle removal technology with minimal pressure drop is urgently needed for both air purification and energy conservation. Electrostatic enhanced air filter (EEAF) has potential to achieve high filtration efficiency and low energy consumption simultaneously. It uses external electric field to improve fabric filter performance without adding pressure drop. However, available researches utilized EEAF with flat filter in laboratory-scale study, which restricted engineering applications due to limited filtration area and high pressure drop. In order to improve EEAF, the present study developed electrostatic enhanced pleated air filters (EEPF). Experiments and mathematical model established in our previous study were adopted to investigate filtration performance of EEPF for fine particles (0.01–10 μm). Compared to …