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Main Title Fundamental Evaluation of an Electronic Air Cleaner.
Author Hanley, J. T. ; Smith, D. D. ; Lawless, P. A. ; Ensor, D. S. ; Sparks, L. E. ;
CORP Author Research Triangle Inst., Research Triangle Park, NC.;Environmental Protection Agency, Research Triangle Park, NC. Air and Energy Engineering Research Lab.
Publisher c1990
Year Published 1990
Report Number EPA-R814169-03; EPA/600/D-91/020;
Stock Number PB91-176735
Additional Subjects Air pollution control equipment ; Air cleaners ; Aerosols ; Indoor air pollution ; Ozone ; Particle size ; Filtration ; Performance evaluation ; Residential buildings ; Ventilation ; Air pollution sampling ; Concentration(Composition) ; Reprints ;
Library Call Number Additional Info Location Last
NTIS  PB91-176735 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 8p
Abstract The paper gives results of a fundamental evaluation of an electronic air cleaner (EAC). The ozone generation rate and particle-size-dependent (0.01-10 micrometers) filtration efficiency of an in-duct residential EAC were measured. Filtration efficiencies were typically 70-90%, showing decreasing efficiency with increasing flowrate. Ozone generation rates were about 3 micrograms/s. Scans of the aerosol concentration on the downwind face of the EAC were used to locate, then eliminate, areas of aerosol sneakage. Sneakage was detected along the top and bottom of the EAC face, apparently due to incomplete aerosol charging for aerosol passing near the ends of the ionizing wires. Areas away from the top and bottom had near-zero aerosol penetration. Based on these results, the inlet to the EAC was masked to eliminate airflow through the sneakage areas. The resultant efficiency of the masked EAC was nearly 100% for particles larger than 0.1 micrometer diameter; however, the filtration efficiency for particles smaller than 0.1 micrometer was not significantly affected by masking.
Supplementary Notes Presented at IAQ '90 held in Toronto (Canada) on July 29-August 3, 1990. Sponsored by Environmental Protection Agency, Research Triangle Park, NC. Air and Energy Engineering Research Lab.
Title Annotations Reprint: Fundamental Evaluation of an Electronic Air Cleaner.
Category Codes 68A; 89B
NTIS Prices PC A02/MF A01
Primary Description 600/13
Document Type NT
Cataloging Source NTIS/MT
Control Number 116429837
Origin NTIS
Type CAT