A fractional aerosol filtration efficiency test method for ventilation air cleaners

Conference · Tue Aug 01 04:00:00 EDT 1995

OSTI ID:87383

Hanley, J T; Smith, D D; Ensor, D S ^[1]

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1. Research Triangle Inst., Research Triangle Park, NC (United States)

Under contract with the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE 671-RP), a new fractional filtration efficiency laboratory test method has been developed for air cleaners used in general ventilation. The method covers the particle diameter size range from 0.3 to 10 {micro}m using an artificially generated aerosol and an optical particle counter to measure aerosol concentrations upstream and downstream of the test air cleaner. In developing the method, careful consideration was given to a wide range of test parameters, including the type of test aerosol to use, test rig configuration, aerosol measurement instrumentation, aerosol loss in the duct and sample lines, sampling procedures, accuracy, cost, safety, and of use. The method proved to be a reliable, accurate, and highly repeatable means of evaluating the fractional filtration efficiency of ventilation air cleaners. In a series of demonstration tests with three air cleaners, the fractional efficiency was repeatable to within two percentage points for all particle sizes.

• OSTI ID: 87383
• Report Number(s): CONF-950104--
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
AIR CLEANING SYSTEMS
AIR FILTERS
AIR QUALITY
INDOOR AIR POLLUTION
PERFORMANCE TESTING
TEST FACILITIES