For exhaust systems that handle dusts, a minimum transport velocity is required to prevent settling and plugging of ductwork. The minimum transport velocity required was studied experimentally for different kinds of dusts. In the case of horizontal ducts, three different velocities related with the minimum transport velocity were measured: saltation velocity, settling velocity and pick up velocity. The experimental results obtained are shown in different graphs, plotting minimum transport velocities vs. particle size and density. From them, empirical exponential relationships were derived.
Minimum transport velocities of mineral and metallic dusts in exhaust systems.
![](https://www.aivc.org/sites/default/files/default_images/default_image_5.png)
Year:
1997
Bibliographic info:
Canada, Canadian Environment Industry Association, 1997, proceedings of Ventilation '97: Global Developments in Industrial Ventilation, 5th International Symposium on Ventilation for Contaminant Control, held in Ottawa, Ontario, Canada