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Main Title Air Filter Particle-Size Efficiency Testing for Diameters Greater Than 1 mu m.
Author Ensor, D. S. ; Hanley, J. T. ; Sparks, L. E. ;
CORP Author Environmental Protection Agency, Research Triangle Park, NC. Air and Energy Engineering Research Lab. ;Research Triangle Inst., Research Triangle Park, NC.
Publisher 1988
Year Published 1988
Report Number EPA/600/A-93/077;
Stock Number PB93-180909
Additional Subjects Air pollution control equipment ; Air filters ; Particle size ; Aerosols ; Indoor air pollution ; Performance evaluation ; Air pollution sampling ; Air cleaning ; Air quality ;
Library Call Number Additional Info Location Last
NTIS  PB93-180909 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 9p
Abstract The characterization of indoor air cleaner efficiency over a wide range of particle diameters (from 0.01 to 30 micrometers) is desired to understand performance when these devices are placed in service. The paper discusses tests of air filter particle-size efficiency for diameters greater than 1 micrometer. Evaluation of air cleaner efficiencies in this size range can be quite demanding, depending on the required accuracy. Such particles have sufficient mass to require consideration of sedimentation and inertial losses. The challenge aerosol is usually generated by dispersion of a dry powder or by liquid spray. In-duct particle measurements are preferred to extractive instruments because of particle loss in sampling tubes. Large particles are also sensitive to non-isokinetic sampling effects.
Supplementary Notes Presented at the ASHRAE annual meeting, Ontario (Canada), June 28, 1988. Prepared in cooperation with Research Triangle Inst., Research Triangle Park, NC.
NTIS Title Notes Rept. for Nov 87-Aug 88.
Category Codes 68A; 89B
NTIS Prices PC A02/MF A01
Primary Description 600/13
Document Type NT
Cataloging Source NTIS/MT
Control Number 317523612
Origin NTIS
Type CAT