Smart filtration of aerosols in ventilation systems

节能建筑通风系统中的气溶胶影响室内空气质量。本实验和计算项目考察了气流速度、湍流程度和气溶胶大小对典型通风管道中气溶胶集中和沉积趋势的影响。研究结果将指导有效过滤的主动和被动控制。摘要：在现代生活中，通风对于保持身体健康至关重要。通风需要过滤系统过滤掉有害的气溶胶。这些有害的气溶胶可能来自外部，如车辆上的烟灰颗粒，也可能来自内部，如病毒气溶胶。目前的过滤系统在能量上非常昂贵，并且限制了通风系统中的气流。通过利用湍流中惯性粒子的优先浓度和气溶胶的电荷，可以设计出智能过滤系统。这将过滤掉更多的气溶胶，更节能。该系统将促进小颗粒的聚合，从而更容易过滤。

Aerosols in ventilation systems of energy efficient buildings affect indoor air quality. This experimental and computational project examines the influence of flow speed, level of turbulence and aerosol size on aerosol tendency to concentrate and deposit in typical ventilation ducts. Findings will guide active and passive control for efficient filtering.Abstract: Ventilation in modern day living is vital in maintaining good health. Ventilation needs filtration systems to filter out harmful aerosol. These harmful aerosols may originate from outside such as soot particles from vehicles, or they may originate from inside sources such as viral aerosols. Current filtration systems can be very energetically expensive and restrict airflow in ventilation systems. By using preferential concentration of inertial particles in turbulence alongside electric charging of aerosols, it may be possible to design a smart filtration system. This would filter out more aerosol and be more energy efficient. This system would promote coalescence of smaller particles resulting in easier filtration.