Authors:

Chen Han Chan

Date Created:

Not specified

Course Title:

Professor:

Not specified

About Paper:

The increasing demand for electric energy to power air-conditioning systems during summers has contributed significantly to atmospheric pollution. Maintaining indoor air quality requires filtration systems capable of efficiently capturing sub-micron and coarse particulate aerosols (0.25-1.0 ?m). However, fine particles are challenging to remove and necessitate high-grade filters, which increase airflow resistance and, consequently, fan energy consumption. This creates a need for an energy-efficient method to filter these aerosols while minimizing energy use. This research explores the application of acoustic trapping techniques within air-conditioning systems to enhance air quality without sacrificing airflow or increasing energy costs. Through a combination of COMSOL simulations and testing of 3D-printed acoustic structure prototypes, we investigate the use of twenty 40 kHz transducers to generate a standing wave field. This field creates a pressure differential, pushing particles from pressure anti-nodes to nodes. When the acoustic force surpasses the drag force, effective particle trapping is achieved. The feasibility of integrating acoustic trapping to improve filtration in air-conditioning systems is currently under investigation, with wind tunnel experiments planned to validate the concept. Additional experiments and simulations are needed to further assess performance and support implementation in real-world air- conditioning systems, aiming to provide a sustainable and energy- efficient solution for indoor air quality management. Keywords: [no keywords provided]

Source:

Purdue University / 2025

Topics:

No topics listed

Co-authors:

Chen Han Chan