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U.S. Department of Energy
Office of Scientific and Technical Information

Aerosol filtration efficiency of ventilation air cleaners. Report for January 1992-December 1994

Technical Report ·
OSTI ID:270195
The paper discusses a test method for measuring the fractional aerosol filtration efficiency of air cleaners. The method provides a reliable and accurate way to measure air cleaner fractional efficiencies over the particle diameter size range of 0.01 to 10 micrometers. The need for a fractional efficiency test comes from several sources: (1) the growing concern with indoor air quality (IAQ); (2) that filtration efficiency is often highly particle-size dependent for particles < 10 micrometers in diameter; (3) limitations of the current American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) efficiency test which, by design, cannot differentiate between particle sizes; and (4) that respirable particles are generally classified as those < 10 micrometers in diameter.
Research Organization:
Research Triangle Inst., Durham, NC (United States)
OSTI ID:
270195
Report Number(s):
PB--96-184387/XAB; CNN: Grant EPA-R-817083
Country of Publication:
United States
Language:
English