Record Display for the EPA National Library Catalog


Main Title Effect of Loading Dust Type on the Filtration Efficiency of Elctrostatically Charged Filters.
Author Hanley, J. T. ; Ensor, D. S. ; Foarde, K. K. ; Sparks, L. E. ;
CORP Author Research Triangle Inst., Research Triangle Park, NC.;Environmental Protection Agency, Research Triangle Park, NC. Air Pollution Prevention and Control Div.
Publisher 1999
Year Published 1999
Report Number EPA/600/A-99/070;
Stock Number PB2000-100897
Additional Subjects Filtration ; Electrostatic charge ; Air cleaners ; Dust ; Efficiency ; Air pollution control equipment ; Electrostics ; Electric corona ; Electrodynamics ; Filters ; Indoor air pollution ; Aerosols ; Particles ; Loading ; Performance evaluation ;
Library Call Number Additional Info Location Last
NTIS  PB2000-100897 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 10p
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.