Suthyvann Sor
INTA, Spain
Title: Aerodynamic characterization of new filters of bioaerosol for INTA investigation aerial platforms
Biography
Biography: Suthyvann Sor
Abstract
Statement of the Problem: A prototype of a new filter of bioaersol particles dedicated to biology investigations has been developed. This prototype was designed to be installed on board investigation aerial platforms of INTA. The air, that contains the particles, enters the filter in the upper side. Then the air encounters a mechanical deflector that throws the air and the particles towards the side walls, where particles are collected. Additionally, a high voltage difference is created between the mechanical deflector electrode and the outer metallic plates acting as sides walls, to pull the charged particles to the side walls increasing the number of particles collected. In the down side, a cylindrical tube that has a spline hole in the down side is connected to a vacuum pump that creates a bi dimensional movement of the air. The experimental characterization of the aerodynamic flow was performed to investigate the behavior of the filter when different air intake velocities and different mechanical deflector geometries are employed.
Methodology & Theoretical Orientation: Five different impactor filters have been investigated by means of PIV measurements. The width of the filter was 100 mm and the filter span was 200 mm. The air intake velocity ranged from 9 m/s to 20 m/s.
Conclusion & Significance: Five filters have been investigated by means of PIV measurements. If the air intake width is decreased, the velocities obtained are higher for the same mass suction. However, the ratio of the horizontal velocity in the impact zone in the wall and the intake velocity decreases. Increasing the plate deflector width increases 10% the velocity between the deflector and the collector walls. However, a gradual deflector allows greater velocities and the impact of the particles in the mechanical deflector is minimum
Recent Publications
1. Dechraksa J, Suwandecha T, Maliwan K, Srichana T (2014). The Comparison of Fluid Dynamics Parameters in an Andersen Cascade Impactor Equipped with and Without a Preseparator. AAPSPharmSciTech. 5(3):792-801.
2. King M D, McFarland A R (2012) Use of an Andersen Bioaerosol Sampler to Simultaneously Provide Culturable Particle and Culturable Organism Size Distributions. Aerosol Science and Technology. 46(8):852-861.
3. Meheust D, Gangneux J P, Le Cann P (2013) Comparative evaluation of three impactor samplers for measuring airborne bacteria and fungi concentrations. Journal of Occupational and Environmental Hygiene. 10:455-459.
4. Pastuszka J S, Iwasiewicz P, BrÄ…goszewska E (2013) Preliminary testing of a new bioaerosol sampler developed for the measurements of low and medium concentration levels of airborne bacteria and fungi. Environment Protection Engineering. 39(1):129-138.
5. Simon X, Bau S, Bemer D, Duquenne P (2015) Measurement of electrical charges carried by airborne bacteria laboratory-generated using a single-pass bubbling aerosolizer. Particuology. 18:179 -185.