AAAR 34th Annual Conference
October 12 - October 16, 2015
Hyatt Regency
Minneapolis, Minnesota, USA
Abstract View
An Experimental Study on the Effect of Particle Concentration on Air Filtration
RAHELEH GIVEHCHI, Zhongchao Tan, University of Waterloo
Abstract Number: 102 Working Group: Control Technology
Abstract The objective of this research is to investigate the effect of particle concentration on airborne nanoparticle filtration. Bimodal tungsten oxide nanoparticles in the range of 0.8-4 nm with mode diameters of 1.07 and 2.54 nm were used as test aerosol particles. Emission sampling system (ESS) was employed to dilute aerosol. Polyvinyl alcohol (PVA) electrospun nanofibrous filters were testes for air filtration. A scanning mobility particle sizer coupled with a Faraday cup electrometer (SMPS+E) was used for measuring the nanoaerosol size distributions downstream of the filter holder, both with and without the filter. With this method, the error due to particle loss is minimized because of the identical sampling lines. Results showed aerosol concentration has a great effect on the filtration efficiency of sub-2 nm particles.