Thermophoresis particle transport and deposition in a duct flow

Nanoparticles are suspended in fluids during production, handling, processing, and by unintentional and/or undesired release to the environment. From the dusts produced by the daily cleaning and the waste gas discharged from cars and motorbikes, which deposit on the alveolus and do harm to human health, to the semiconductor quality control, the dust-collecting in the clean room, the air-pollution control and the human respiratory system protection, its importance can be seen everywhere. At present, pollutants in the atmosphere which come from industry, transportation, or agriculture, have caused different kinds of environmental problems. Especially, fine particulate matter (PM) less than 10 ¿m such as nitrogen dioxide and monoxide, directly affects environmental quality and human health. This book presents an alternative for capturing and removing small particles from gas streams by thermophoresis application. The particle transport and deposition has been elaborated with the aid of numerical models considering particles in the range of 0.01 to 100 micrometers flowing in the duct.