Sub-micron loading of aerosols: Experimental and reporting considerations

摘要

1 NaCI is a consistent loading mechanism, but has concerns around dissolution and creating a packed bed independent of contaminant 1.1 No normalization needed to compare medias with different distributions 2 Quenched soot of similar oxidation rates has a consistent behavior, but without tight control on the contaminant size and morphology capacity comparisons are difficult 2.1 Variation in contaminant results in different performance results 2.2 Normalization methods show similar media performance rankings 3 "Wet" soot can be turned dry through passing through a catalyst 3.1 Can be more of a "real-world" by plugging certain fiber grids (e.g. thinly layered fine fibers vs a bed of fine fibers) 3.2 Is a difficult and more variable test to run 3.2.1 Unburned hydrocarbons can evaporate off during test, changing contaminant structure 3.2.2 Some medias load extremely slowly 4 Some medias perform well in "wet" contaminants, some in dry, and some in both (e.g. the bed of fine fibers) 4.1 Given the variability of the real-world, decisions can be made on what an application's aerosol and protection needed to the appropriate media