Design and construction of a test rig for grouping of tiny particles using acoustic combined with flow oscillations

• Main Author: Lu, Zhen Hao
• Other Authors: Huang Xiaoyang
• Format: Final Year Project
• Language: English
• Published: Nanyang Technological University 2020
• Subjects: Engineering::Mechanical engineering::Fluid mechanics
• Online Access: https://hdl.handle.net/10356/141989
• Institution: Nanyang Technological University

Southeast Asian haze has caused air pollution throughout the years. To reduce the level of airborne particulate matters (PM) in a building, the High Efficiency Particulate Arrestance (HEPA) filter was introduced. Since it is costly to regularly replace HEPA filters, acoustic agglomerations in the pre-filter region were introduced to improve the formation of air particles to enhance the efficient capturing of PM without adding additional flow resistance in the system. This report explains the primary function of acoustic agglomeration along with factors to improve the efficiency of agglomeration. The construction of the chamber, spraying agglomeration and difference in particle sizes in the pre-filter region will be proposed and conducted in this report. The experiment results indicate that acoustic agglomeration has improved the grouping of particles without additional pressure drops in the system.