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Performance of a fiber length classifier.

Authors
Baron-PA; Gao-P; Deye-GJ; Maynard-AC
Source
J Aerosol Sci 1998 Sep; 29(Suppl 1):S11-S12
NIOSHTIC No.
20024749
Abstract
A differential mobility classifier that separates fibers according to length using dielectrophoresis has been constructed and used for several applications (Baron et al. 1994; Baron et al. 1998). The performance of the classifier was predicted using a two dimensional axi-symmetric model of the flow field and then calculating particle trajectories for a variety of conditions. Based on the flow calculations (e.g. Figure 1), several regions of the classifier were improved to reduce likelihood of turbulent losses. For a given total flow through the classifier and a maximum voltage across the electrodes, the performance of the classifier was found to depend on the ratio of the aerosol flow to the inner and the outer sheath flows. The minimum classifiable length, the minimum length distribution width, and the throughput of classified fibers could each be optimized, but not independently.
Keywords
Fibrous-dusts; Aerosol-sampling; Sampling-equipment; Sampling-methods; Sampling; Analytical-instruments; Air-flow; Equipment-reliability; Performance-capability
Contact
National Institute for Occupational Safety and Health, U.S. Centers for Disease Control and Prevention, Cincinnati, OH, 45226, U.S.A
CODEN
JALSB7
Publication Date
19980901
Document Type
Journal Article
Fiscal Year
1998
NTIS Accession No.
NTIS Price
ISSN
0021-8502
NIOSH Division
DPSE; DRDS
Source Name
Journal of Aerosol Science
State
OH; WV
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