RESEARCH NOTE:PRESSURE DROP AND PENETRATION FOR PRE-CHARGED AND NEUTRAL PARTICLES ON FIBROUS AND MEMBRANE FILTERS

摘要

The differences in pressure drop and penetration evolutions for pre-charged and neutralized particles with fibre and membrane filter media has been compared experimentally.A novel experimental setup was developed to perform in situ monitoring of pressure drop,aerosol concentration and diameter distribution.The test aerosol particle was a form of Si bead.The results show that the presence of electrostatics has a positive effect on the pressure drop and efficiency of a membrane filter but a negative action on a fibre filter.