Collection Efficiency of Fiber Mat Filter with Low Dust Loading

Most of the investigation on the collection efficiency of fiber mats have been based on the capture of one particle. In practical fiber mat filters the value of collection efficiency increases with the filtrati on time by the interference effect of collected particles. However, an analytical investigation on the collection efficiency with dust loading effects has not been published.Assuming the increment of collection efficiency Δηe for an isolated fiber with dust loading as Equation (3), the instantaneous collection efficiency E of a fiber mat with dust loading is represe nted as Equation (5). The empirical Equation (15) of Δηe is derived from the experimental dataof (1-E), using dimensionless groups.The collection efficiency of fiber mats obtained by our experimental method are the cumulative collection efficiency E as defined in Equation (6), and the instantaneous collection efficiency E can be calculated from cumulative collection efficiency by Equation (11).