ABSTRACT
Although fibrous filters are the most efficient and commonly used means of air cleaning, there are limitations often associated with this high filter efficiency, one of which is the relatively low dust-holding capacity. The primary problems associated with the fibrous filters stem from the direct contact of dust with a physical filtration media. This
contact
process accumulates dust onto the media quickly, and the media requires frequent maintenance or replacement. In many dusty environments, such as a grain elevator or an off-road vehicle, the dust concentration is typically tens or hundreds times higher than that of a residential building. As a result, filtration media of an air-cleaning device must be frequently maintained or replaced, which incurs high capital and operating costs.
