Particle Collection of Electret Media under Different Filtration Pressures
Abstract 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 el...
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| Format: | Article |
| Language: | English |
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Springer
2023-01-01
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| Series: | Aerosol and Air Quality Research |
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| Online Access: | https://doi.org/10.4209/aaqr.220405 |
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| _version_ | 1823862822398853120 |
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| author | Zhen Liu Da-Ren Chen Qinghe Niu Desmond Asiedu Mensah Zhongli Ji |
| author_facet | Zhen Liu Da-Ren Chen Qinghe Niu Desmond Asiedu Mensah Zhongli Ji |
| author_sort | Zhen Liu |
| collection | DOAJ |
| description | Abstract 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., η In and ηC, 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. |
| format | Article |
| id | doaj-art-7d9c2680897848b5b5027a1fb4c33f46 |
| institution | Kabale University |
| issn | 1680-8584 2071-1409 |
| language | English |
| publishDate | 2023-01-01 |
| publisher | Springer |
| record_format | Article |
| series | Aerosol and Air Quality Research |
| spelling | doaj-art-7d9c2680897848b5b5027a1fb4c33f462025-02-09T12:23:28ZengSpringerAerosol and Air Quality Research1680-85842071-14092023-01-0123211610.4209/aaqr.220405Particle Collection of Electret Media under Different Filtration PressuresZhen Liu0Da-Ren Chen1Qinghe Niu2Desmond Asiedu Mensah3Zhongli Ji4Beijing Key Laboratory of Process Fluid Filtration and Separation, College of Mechanical and Transportation Engineering, China University of PetroleumParticle Laboratory, Department of Mechanical & Nuclear Engineering, Virginia Commonwealth UniversityBeijing Key Laboratory of Process Fluid Filtration and Separation, College of Mechanical and Transportation Engineering, China University of PetroleumBeijing Key Laboratory of Process Fluid Filtration and Separation, College of Mechanical and Transportation Engineering, China University of PetroleumBeijing Key Laboratory of Process Fluid Filtration and Separation, College of Mechanical and Transportation Engineering, China University of PetroleumAbstract 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., η In and ηC, 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.https://doi.org/10.4209/aaqr.220405Electret mediaCharged fibrous mediaFiltration pressureAerosol filtrationParticle penetration |
| spellingShingle | Zhen Liu Da-Ren Chen Qinghe Niu Desmond Asiedu Mensah Zhongli Ji Particle Collection of Electret Media under Different Filtration Pressures Aerosol and Air Quality Research Electret media Charged fibrous media Filtration pressure Aerosol filtration Particle penetration |
| title | Particle Collection of Electret Media under Different Filtration Pressures |
| title_full | Particle Collection of Electret Media under Different Filtration Pressures |
| title_fullStr | Particle Collection of Electret Media under Different Filtration Pressures |
| title_full_unstemmed | Particle Collection of Electret Media under Different Filtration Pressures |
| title_short | Particle Collection of Electret Media under Different Filtration Pressures |
| title_sort | particle collection of electret media under different filtration pressures |
| topic | Electret media Charged fibrous media Filtration pressure Aerosol filtration Particle penetration |
| url | https://doi.org/10.4209/aaqr.220405 |
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