Characteristics of the collection efficiency for a cyclone with different vortex finder shapes [An article from: Journal of Aerosol Science]

This digital document is a journal article from Journal of Aerosol Science, published by Elsevier in 2004. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser. The performance of a cyclone, with different vortex finders, was evaluated to examine the effect of the vortex finder shape on the characteristics of the collection efficiency. Four cylinder-shaped and six cone-shaped vortex finders were designed and employed to compare the collection efficiencies of the cyclone, at flow rates of 30 and 50l/min. The cylinder-shaped-vortex finders had different diameters, i.e. 15, 11 and 7mm, and the cone-shaped vortex finders had different cone lengths, i.e. 10, 25 and 45mm, with 7 and 15mm diameters at both ends of the cone. The collection efficiencies of the cone-shaped vortex finders were found to only be slight different, regardless of the cone length, which were higher than that of the cylinder-shaped vortex finder with a 15mm diameter, but lower than that of cylinder-shaped vortex finder with a 7mm diameter. This result indicates that two cone-shaped vortex finders, with different diameters, had the collection efficiencies between those of the cylinder-shaped vortex finders with the same diameter, and that a smaller pressure drop per flow rate unit could be achieved for the cone-shaped design, but the cone length did not affect the collection efficiency and pressure drop of the cyclone.