Fog Droplet Collection by Corona Discharge in a Needle–Cylinder Electrostatic Precipitator with a Water Cooling System
In this study, a needle–cylinder electrostatic precipitator with a water cooling system was designed to enhance the harvest of atmospheric water in wet flue gas. The effects of flow rate, temperature and particles on the collection of fog droplets were investigated. Meanwhile, the energy efficiency...
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| Format: | Article |
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MDPI AG
2022-07-01
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| Online Access: | https://www.mdpi.com/2297-8739/9/7/169 |
| _version_ | 1797443798362488832 |
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| author | Hui Fu Wenyi Xu Zhen Liu Keping Yan |
| author_facet | Hui Fu Wenyi Xu Zhen Liu Keping Yan |
| author_sort | Hui Fu |
| collection | DOAJ |
| description | In this study, a needle–cylinder electrostatic precipitator with a water cooling system was designed to enhance the harvest of atmospheric water in wet flue gas. The effects of flow rate, temperature and particles on the collection of fog droplets were investigated. Meanwhile, the energy efficiency of water collection was analyzed at different voltages. The results show that the current decreases with the increase of air relative humidity under the same voltage, and the breakdown voltage increases obviously. Concurrently, by appropriately reducing the wet flue gas flow velocity, the residence time of fog droplets in the electric field can be increased, fully charging the droplets and improving the water collection efficiency. Moreover, experiments revealed that through decreasing the flue gas temperature, both the water collection rate and energy efficiency can be improved. In addition, the presence of particles in wet gas can improve the water collection rate by 5~8% at different discharge voltages. Finally, based on energy efficiency analysis, with the increase of voltage, although the water collection rate increased, the energy efficiency decreased. |
| first_indexed | 2024-03-09T13:02:12Z |
| format | Article |
| id | doaj.art-e0565d9be7c04ee1b4912e98739ae60e |
| institution | Directory Open Access Journal |
| issn | 2297-8739 |
| language | English |
| last_indexed | 2024-03-09T13:02:12Z |
| publishDate | 2022-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Separations |
| spelling | doaj.art-e0565d9be7c04ee1b4912e98739ae60e2023-11-30T21:53:08ZengMDPI AGSeparations2297-87392022-07-019716910.3390/separations9070169Fog Droplet Collection by Corona Discharge in a Needle–Cylinder Electrostatic Precipitator with a Water Cooling SystemHui Fu0Wenyi Xu1Zhen Liu2Keping Yan3College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310028, ChinaCollege of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310028, ChinaCollege of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310028, ChinaCollege of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310028, ChinaIn this study, a needle–cylinder electrostatic precipitator with a water cooling system was designed to enhance the harvest of atmospheric water in wet flue gas. The effects of flow rate, temperature and particles on the collection of fog droplets were investigated. Meanwhile, the energy efficiency of water collection was analyzed at different voltages. The results show that the current decreases with the increase of air relative humidity under the same voltage, and the breakdown voltage increases obviously. Concurrently, by appropriately reducing the wet flue gas flow velocity, the residence time of fog droplets in the electric field can be increased, fully charging the droplets and improving the water collection efficiency. Moreover, experiments revealed that through decreasing the flue gas temperature, both the water collection rate and energy efficiency can be improved. In addition, the presence of particles in wet gas can improve the water collection rate by 5~8% at different discharge voltages. Finally, based on energy efficiency analysis, with the increase of voltage, although the water collection rate increased, the energy efficiency decreased.https://www.mdpi.com/2297-8739/9/7/169corona dischargeionic windheat exchangewater collectionenergy efficiency |
| spellingShingle | Hui Fu Wenyi Xu Zhen Liu Keping Yan Fog Droplet Collection by Corona Discharge in a Needle–Cylinder Electrostatic Precipitator with a Water Cooling System Separations corona discharge ionic wind heat exchange water collection energy efficiency |
| title | Fog Droplet Collection by Corona Discharge in a Needle–Cylinder Electrostatic Precipitator with a Water Cooling System |
| title_full | Fog Droplet Collection by Corona Discharge in a Needle–Cylinder Electrostatic Precipitator with a Water Cooling System |
| title_fullStr | Fog Droplet Collection by Corona Discharge in a Needle–Cylinder Electrostatic Precipitator with a Water Cooling System |
| title_full_unstemmed | Fog Droplet Collection by Corona Discharge in a Needle–Cylinder Electrostatic Precipitator with a Water Cooling System |
| title_short | Fog Droplet Collection by Corona Discharge in a Needle–Cylinder Electrostatic Precipitator with a Water Cooling System |
| title_sort | fog droplet collection by corona discharge in a needle cylinder electrostatic precipitator with a water cooling system |
| topic | corona discharge ionic wind heat exchange water collection energy efficiency |
| url | https://www.mdpi.com/2297-8739/9/7/169 |
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