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Time Resolved Size Distributions of Test Smokes and Nuisance Aerosols
Published
Author(s)
Thomas Cleary
Abstract
An electrical low-pressure impactor (ELPI) has been used to measure the size distribution of various test smokes and nuisance aerosols generated in the fire emulator/detector evaluator (FE/DE). Previously reported size results were time-averaged values with sampling times on the order of five minute required to collect a weighable amount. The ELPI is a 12-stage cascade impactor that separates particles between an aerodynamic diameter size range of 0.03 mm to 10 mm, which covers a wide range of particle sizes of interest in smoke alarm research. A complete size distribution is recorded every 10 s. The size distributions of several test smokes including: propene, soot, and smoldering cotton and wood smoke were measured throughout smoke alarm exposure tests. The size distribution of several nuisance aerosols including: dust, cigarette smoke, and cooking smokes were also measured. Additionally, comparisons were made between the ELPI results and results from a tapered element oscillating microbalance and the measuring ionization chamber.
Citation
To Be Determined
Pub Type
Journals
Keywords
cascade impactor, fire emulator/detector evaluator, size distribution, smoke, smoke alarm