当在空调系统中使用过滤时，空气移动器、相关空调设备、管道壁和空调空间内的表面上会进一步去除颗粒。这种滤除通常称为主动滤除，被动滤除会影响颗粒的分布。为了确定这种效果，在环境室内研究了主动和被动去除机制。有效方法包括在潮湿表面过滤和收集（即除湿）。所研究的被动方法是通过腔室表面去除颗粒（例如扩散沉积、沉降和凝固）和系统（风扇）去除。在这些试验期间，对粒径范围为0.01至1.0微米的颗粒进行了粒度分布测量。主动和被动去除机制的测量结果之间的比较表明，粒度分布随所考虑的去除方法的变化而变化。 关键词:燃烧室，颗粒分布，加湿，过滤，去除，烟草烟雾单位:干燥:研讨会，ASHRAE学报，1988年，第94卷，pt。2、渥太华

When filtration is used in an air conditioning system further removal of particles occurs on the air mover, the associated air conditioning equipment, the duct walls, and surfaces within the conditioned space. This removal, commonly called passive removal, will affect the particle distribution of the active filtration element.To determine this effect, active and passive removal mechanisms were investigated in an environmental chamber. The active methods included filtration and collection on wet surfaces (i.e., dehumidification). The passive methods investigated were removal of particles by the chamber surfaces (e.g., diffusional deposition, settling, and coagulation) and system (fan) removal. During these tests measurements of particle size distributions were made for the particle diameter range of 0.01 to 1.0 microns.A comparison between measured results for both active and passive removal mechanisms shows variations in the particle size distributions with the change in distribution depending on the removal method considered.Key Words: Chamber, Particle Distribution, Humidification, Filtration, Removal, Tobacco SmokeUnits: SI