||Effect of Loading Dust Type on the Filtration Efficiency of Elctrostatically Charged Filters.
Hanley, J. T. ;
Ensor, D. S. ;
Foarde, K. K. ;
Sparks, L. E. ;
||Research Triangle Inst., Research Triangle Park, NC.;Environmental Protection Agency, Research Triangle Park, NC. Air Pollution Prevention and Control Div.
Electrostatic charge ;
Air cleaners ;
Air pollution control equipment ;
Electric corona ;
Indoor air pollution ;
Performance evaluation ;
||Some EPA libraries have a fiche copy filed under the call number shown.
||The paper gives results of an evaluation of the effect of loading dust type on the filtration efficiency of electrostatically charged filters. Three types of filters were evaluated: a rigid-cell filter charged using an electrodynamic spinning process, a pleated-panel filter charged using a corona charging process, and a residential filter charged using a split-fiber process. The filtration efficiency measurements covered a 0.3-10 micrometer diameter size range. Exposures consisted of outdoor ambient air, in-home air, American Society of Heating, Refrigerating and Air-conditioning Engineers (ASHRE) dust, ASHRAE dust without carbon black, and a sub-micrometer salt aerosol. Results show that all the ambient and in-home exposed filters had substantial decreases in filtration efficiency. The submicrometer salt aerosol came closest to duplicating the outdoor and in-home aerosol exposure results, although the magnitude of the efficiency decrease was underestimated in some cases.
||Presented at Indoor Air '99, Edinburgh, Scotland, August 8-13, 1999. Sponsored by Environmental Protection Agency, Research Triangle Park, NC. Air Pollution Prevention and Control Div.
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|NTIS Title Notes
||Rept. for Mar-Dec 98.
||PC A02/MF A01