Design of a Medium Scale Ambient PM2.5 Cleaning System
Abstract High concentrations of ambient particulate matter (PM) have caused millions of premature deaths annually worldwide. The source control strategy was normally implemented to bring the PM pollution down to meet the standards. However, it took more than 50 years for UK and US. As PM pollution i...
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| Format: | Article |
| Language: | English |
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Springer
2022-12-01
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| Series: | Aerosol and Air Quality Research |
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| Online Access: | https://doi.org/10.4209/aaqr.220437 |
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| author | Sheng-Chieh Chen Qingfeng Cao Thomas H. Kuehn Charles Lo Manoranjan Sahu Yelia S. Mayya David Y. H. Pui |
| author_facet | Sheng-Chieh Chen Qingfeng Cao Thomas H. Kuehn Charles Lo Manoranjan Sahu Yelia S. Mayya David Y. H. Pui |
| author_sort | Sheng-Chieh Chen |
| collection | DOAJ |
| description | Abstract High concentrations of ambient particulate matter (PM) have caused millions of premature deaths annually worldwide. The source control strategy was normally implemented to bring the PM pollution down to meet the standards. However, it took more than 50 years for UK and US. As PM pollution is hurting people’s health on daily basis in many countries, a fast and inexpensive control technology should be developed to remedy the slow pace of source control. It should be applied in highly polluted areas, e.g., cities and industrial parks, where people are spending a considerable time outdoors. In this study, a medium-scale filter-based blower-driven cleaning system was designed based on a computational fluid dynamic (CFD) simulation and experiments. We found the system with a dimension of 20 m (L) × 20 m (W) × 23 m (H) using 40 sets of 40-HP blowers can output ~1000 m3 s−1 (CMS) of cleaned air. In PM removal, the design of the system, including the filter specifications, filter bank arrangement, and filter quantity, is crucial which results in the PM filtration efficiency, filter service life, and energy consumption. The clean air delivery rate (CADR), the product of the system flow rate (1000 CMS) and filtration efficiency (> 80%), is expected to be more than 800 CMS or ~70,000,000 m3 day−1 (CMD). The experiments showed that the filter service life is expected to be 2 and 6 months for the prefilter and final filter, respectively, under total suspended particulate and PM2.5 concentrations of 600 and 300 (µg m−3, respectively. The CFD simulations showed the area of the effective PM2.5 reduction zone (> 50% PM2.5 concentration reduction) is as large as ~300 m in diameter by this system. The CFD model also shows deploying 400 cleaning systems with 1 km apart, the PM2.5 reduced zone can cover an area of 400 km2. |
| format | Article |
| id | doaj-art-a9166687cbb04017b18571c1873f1907 |
| institution | Kabale University |
| issn | 1680-8584 2071-1409 |
| language | English |
| publishDate | 2022-12-01 |
| publisher | Springer |
| record_format | Article |
| series | Aerosol and Air Quality Research |
| spelling | doaj-art-a9166687cbb04017b18571c1873f19072025-02-09T12:23:29ZengSpringerAerosol and Air Quality Research1680-85842071-14092022-12-0123211310.4209/aaqr.220437Design of a Medium Scale Ambient PM2.5 Cleaning SystemSheng-Chieh Chen0Qingfeng Cao1Thomas H. Kuehn2Charles Lo3Manoranjan Sahu4Yelia S. Mayya5David Y. H. Pui6Mechanical and Nuclear Engineering, Virginia Commonwealth UniversityDepartment of Mechanical Engineering, University of MinnesotaDepartment of Mechanical Engineering, University of MinnesotaDepartment of Mechanical Engineering, University of MinnesotaIndian Institute of Technology BombayIndian Institute of Technology BombayDepartment of Mechanical Engineering, University of MinnesotaAbstract High concentrations of ambient particulate matter (PM) have caused millions of premature deaths annually worldwide. The source control strategy was normally implemented to bring the PM pollution down to meet the standards. However, it took more than 50 years for UK and US. As PM pollution is hurting people’s health on daily basis in many countries, a fast and inexpensive control technology should be developed to remedy the slow pace of source control. It should be applied in highly polluted areas, e.g., cities and industrial parks, where people are spending a considerable time outdoors. In this study, a medium-scale filter-based blower-driven cleaning system was designed based on a computational fluid dynamic (CFD) simulation and experiments. We found the system with a dimension of 20 m (L) × 20 m (W) × 23 m (H) using 40 sets of 40-HP blowers can output ~1000 m3 s−1 (CMS) of cleaned air. In PM removal, the design of the system, including the filter specifications, filter bank arrangement, and filter quantity, is crucial which results in the PM filtration efficiency, filter service life, and energy consumption. The clean air delivery rate (CADR), the product of the system flow rate (1000 CMS) and filtration efficiency (> 80%), is expected to be more than 800 CMS or ~70,000,000 m3 day−1 (CMD). The experiments showed that the filter service life is expected to be 2 and 6 months for the prefilter and final filter, respectively, under total suspended particulate and PM2.5 concentrations of 600 and 300 (µg m−3, respectively. The CFD simulations showed the area of the effective PM2.5 reduction zone (> 50% PM2.5 concentration reduction) is as large as ~300 m in diameter by this system. The CFD model also shows deploying 400 cleaning systems with 1 km apart, the PM2.5 reduced zone can cover an area of 400 km2.https://doi.org/10.4209/aaqr.220437PM2.5Lung cancerFiltrationElectretArea control |
| spellingShingle | Sheng-Chieh Chen Qingfeng Cao Thomas H. Kuehn Charles Lo Manoranjan Sahu Yelia S. Mayya David Y. H. Pui Design of a Medium Scale Ambient PM2.5 Cleaning System Aerosol and Air Quality Research PM2.5 Lung cancer Filtration Electret Area control |
| title | Design of a Medium Scale Ambient PM2.5 Cleaning System |
| title_full | Design of a Medium Scale Ambient PM2.5 Cleaning System |
| title_fullStr | Design of a Medium Scale Ambient PM2.5 Cleaning System |
| title_full_unstemmed | Design of a Medium Scale Ambient PM2.5 Cleaning System |
| title_short | Design of a Medium Scale Ambient PM2.5 Cleaning System |
| title_sort | design of a medium scale ambient pm2 5 cleaning system |
| topic | PM2.5 Lung cancer Filtration Electret Area control |
| url | https://doi.org/10.4209/aaqr.220437 |
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