Effects of Ionization on the Filtration of Fine and Ultrafine Particles in Indoor Air

Table 1

Multifiber filter model parameters for diffusion and interception.

Parameters	Control diffusion	Control interception	Treatment 1 interception	Treatment 2 interception	Treatment 3 interception
Total volume fraction	0.0020	0.0020	0.0020	0.0020	0.0020
Media length (m)	0.015	0.015	0.015	0.015	0.015
Nominal face velocity (FPM)	25	25	25	25	25
Media velocity (FPM)	3.118914308	3.118914308	3.118914308	3.118914308	3.118914308
Media velocity (m/s)	0.015840093	0.015840093	0.015840093	0.015840093	0.015840093
Fiber 1 diameter (microns)	3.32	2.00	0.771	0.80	0.827
Fiber 1 fraction of total	0.33	0.94	0.44	0.60	0.57
Fiber 2 diameter (microns)	4.78	6.00	2.01	2.22	2.40
Fiber 2 fraction of total	0.29	0.03	0.35	0.23	0.30
Fiber 3 diameter (microns)	6.45	6.50	5.75	5.60	6.50
Fiber 3 fraction of total	0.38	0.03	0.21	0.17	0.13
Multiplication coefficient,	1.00	0.95	0.965	0.93	0.946
	0.89	0.82	0.98	0.98	0.96