Aerosol Filtration with Mobility-Classified Particles: Role of Multiply Charged Particles in Skewing Penetration Measurements

摘要: Filter media exhibit strong particle-size dependent capture characteristics that have a complicated dependence to filter properties and operating conditions. As simulation-based determination of the filtration real is very challenging, accurate experimental approaches are critically necessary. Conventionally, penetration measurements were made using test particles extracted from differential mobility analyzer (DMA) measuring ratio particle counts downstream upstream. Size-dependent can be directly determined these if DMA was operated at high resolution contribution multiply charged negligible. The accuracy this well-established approach has, however, never been fully assessed. In study, influence efficiency system-modeling approach. model results suggest mu...