Experimental studies on electrostatic-force strengthened particulate matter filtration for built environments: Progress and perspectives

Enze Tian; Yilun Gao; Jinhan Mo

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Experimental studies on electrostatic-force strengthened particulate matter filtration for built environments: Progress and perspectives

机译：Experimental studies on electrostatic-force strengthened particulate matter filtration for built environments: Progress and perspectives

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摘要

Every year, ambient particulate matter (PM) causes more than one million deaths worldwide. Considering that people spend more than 80% of their time indoors, there is an urgent need for efficient air purification in the built environment. Electrostatic forces have been armed with fibrous filters to promote filtration efficiency and avoid large pressure drops leading to large energy consumption, noise problems, and frequent replacements. Here, we summarise the electrostatic-force-strengthened filtration studies with application potentials for indoor PM removal (studies for masks, industrial processes and pollution control are not included), and divide them into three categories according to whether the PM and fibers are charged. Among them, singly-fiber-charged filtration, especially electret filters fabricated by electrospinning, serves in the simplest structure. Synergistically charging both PM and fibers outperforms the singly particle- or fiber-charged filtration, as the PM-fiber Coulombic force is far beyond the dielectrophoresis force. We introduce the working principle for each technology, compare their initial and long-term performance for non-oily particles, oily particles, and bioaerosols, and provide specific research prospects for improving the performance of these technologies.

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《Building and environment》 |2023年第1期|109782.1-109782.24|共24页
作者
Enze Tian; Yilun Gao; Jinhan Mo;
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作者单位

Songshan Lake Materials Laboratory, Dongguan, 523808, China, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China;

Department of Building Science, School of Architecture, Tsinghua University, Beijing, 100084, China, Beijing Key Laboratory of Indoor Air Quality Evaluation and Control, Beijing, 100084, China;

Department of Building Science, School of Architecture, Tsinghua University, Beijing, 100084, China, Beijing Key Laboratory of Indoor Air Quality Evaluation and Control, Beijing, 100084, China, Key Laboratory of Eco Planning & Green Building, Ministry of;

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原文格式 PDF
正文语种英语
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关键词
Indoor air quality; Electret filter; Electrospinning; PM; Ionizer; Charging;

Experimental studies on electrostatic-force strengthened particulate matter filtration for built environments: Progress and perspectives

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