Record Display for the EPA National Library Catalog


Main Title Air Cleaners for Indoor Air Pollution Control (Chapter 10).
Author Viner, A. S. ; Ramanathan, K. ; Hanley, J. T. ; Smith, D. D. ; Ensor, D. S. ;
CORP Author Research Triangle Inst., Research Triangle Park, NC.;Environmental Protection Agency, Research Triangle Park, NC. Air and Energy Engineering Research Lab.
Publisher 1991
Year Published 1991
Report Number EPA-R-814169; EPA/600/D-91/223;
Stock Number PB91-242446
Additional Subjects Air pollution control ; Indoor air pollution ; Performance evaluation ; Air cleaners ; Dust filters ; Sorbents ; Volatile organic compounds ; Particulates ; Stationary sources ; Reprints ;
Library Call Number Additional Info Location Last
NTIS  PB91-242446 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 19p
The chapter describes an experimental study to evaluate performance characteristics of currently available controls for indoor air pollutants, including both particles and gases. The study evaluated the particle-size-dependent collection efficiency of seven commercially available devices for particulate control: a common furnace filter, four industrial filters, and two electronic air cleaners (EACs). The furnance filter had negligible effect on particles with diameters between 0.1 and 1 micrometer. The industrial filters, with ASHRAE ratings of 95, 85, 65, and 40% showed minimum efficiency at about 0.1 micrometer, which was substantially less than the ASHRAE efficiency. One EAC, essentially a furnance filter with a high-voltage electrode, reached a maximum efficiency of 30% at low flowrates (7 cu m/min); however, it had a negligible effect at higher flowrates. The other EAC, similar to an industrial ESP, showed efficiencies of 80-90% over the entire size range at low to moderate flowrates. At the highest flowrate, a minimum efficiency was detected at 0.35 micrometer. The study also evaluated the suitability of commerically available carbon-based sorbents (wood, coal, and coconut) for removing low concentrations of volatile organic compounds (benzene, acetaldehyde, and 1,1,1-trichloroethane).