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dc.contributor.authorTsai, Chuen-Jinnen_US
dc.contributor.authorChen, Sheng-Chiehen_US
dc.contributor.authorPrzekop, Rafalen_US
dc.contributor.authorMoskal, Arkadiuszen_US
dc.date.accessioned2014-12-08T15:14:32Z-
dc.date.available2014-12-08T15:14:32Z-
dc.date.issued2007-03-01en_US
dc.identifier.issn0013-936Xen_US
dc.identifier.urihttp://dx.doi.org/10.1021/es060518oen_US
dc.identifier.urihttp://hdl.handle.net/11536/11059-
dc.description.abstractAn axial flow cyclone for removing nanoparticles was tested for collection efficiency. Data were validated numerically in vacuum conditions of several Torrs, with flow rates of 0.35-0.57 slpm. The experimental cutoff aerodynamic diameter of the cyclone ranged from 21.7 to 49.8 nm. A 3-D numerical simulation was conducted first to calculate detailed flow and pressure fields, then a Brownian Dynamics simulation was done to determine the collection efficiency of nanoparticles. Both centrifugal force and Brownian diffusion were taken into account. The simulated results for both pressure drop and cutoff aerodynamic diameter are in good agreement with the experimental data. In comparison, previous theories using simplified tangential flow field assumption are not able to predict collection efficiencies accurately. The numerical model developed in this study can facilitate cyclone design to classify valuable nanopowders below a certain diameter, or to remove toxic nanoparticles from the vacuum exhaust of process chambers commonly used in high-tech industries.en_US
dc.language.isoen_USen_US
dc.titleStudy of an axial flow cyclone to remove nanoparticles in vacuumen_US
dc.typeArticleen_US
dc.identifier.doi10.1021/es060518oen_US
dc.identifier.journalENVIRONMENTAL SCIENCE & TECHNOLOGYen_US
dc.citation.volume41en_US
dc.citation.issue5en_US
dc.citation.spage1689en_US
dc.citation.epage1695en_US
dc.contributor.department環境工程研究所zh_TW
dc.contributor.departmentInstitute of Environmental Engineeringen_US
dc.identifier.wosnumberWOS:000244467500038-
dc.citation.woscount9-
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