Record Display for the EPA National Library Catalog


Main Title Fractional aerosol filtration efficiency of air cleaners
Author Hanley, James T. ; Smith, D. D. ; Ensor, D. S. ; Sparks, L. E.
Other Authors
Author Title of a Work
Sparks, Leslie E.
CORP Author Research Triangle Inst., Research Triangle Park, NC.;Environmental Protection Agency, Research Triangle Park, NC.
Publisher U.S. Environmental Protection Agency, Office of Research and Development, Air and Energy Engineering Research Laboratory,
Year Published 1993
Report Number CR817083-01-0 ; AEERL-P-1043 ; PB93-236636 ; EPA-600/A-93-234
Stock Number PB93-236636
OCLC Number 38736263
Additional Subjects Air cleaners ; Filtration ; Air pollution control ; Aerosols ; Buildings ; Environmental engineering ; Performance evaluation ; Measuring instruments ; Furnaces ; Residential buildings ; Office buildings ; Indoor air pollution ; Fractional aerosol filtration efficiency
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EKBD  EPA-600/A-93-234 Research Triangle Park Library/RTP, NC 03/28/1998
NTIS  PB93-236636 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 6 leaves : ill.
The paper gives results of an evaluation of the fractional filtration efficiency of air cleaners. The test duct accepts air cleaners up to 610 x 610 mm in size and provides test flow rates up to 470 L/s. Filtration efficiency is computed from upstream and downstream aerosol concentration measurements performed with a differential mobility analyzer, a laser aerosol spectrometer, and a white-light optical particle counter. The measurements cover the particle diameter size range from 0.0l to 3 micrometer in 16 sizing channels. Air cleaners tested include furnace filters, pleated filters, and statically charged panel filters. The efficiency of the air cleaners was often found to be highly dependent on particle size and dust load. A minimum in efficiency was frequently observed in the 0.1 to 0.5 micrometer range. The presence of a dust load on the air cleaners frequently increased their efficiency. However, for some air cleaners, little change or a decrease in efficiency accompanied the dust loading. The common furnace filter was seen to have a fractional efficiency of less than 10% over much of the 0.01 to 1 micrometer size range.
Project Officer: Leslie E. Sparks. Performing Organization: Research Triangle Institute. "Presented at IAQ '93, Helsinki, Finland, 7/4-8/93"--Technical Data Report insert. EPA/600/A-93/234. AEERL-P-1043. PB93-236636. Includes bibliographical references (leaf 6) and abstract.