Generalized Performance Characteristics of Miniature Cyclones for Atmospheric Particulate Sampling

Publisher Website
Google Scholar
Abstract
Small cyclones are advantageous for size selective sampling of atmospheric particulate matter because they are capable of collecting large samples and are less subject than impactors to particle bounceoff and reentrainment. However, there has been a lack of an accurate generalized quantitative description of their performance, which has necessitated extensive calibrations of each design. Collection efficiency data for 30 cyclones have been accurately fitted by two simple equations using outlet Reynolds number as a variable rather than flow rates. They also fitted the limited available data for the effects of temperatures ranging from 25 to 204 °C. Normalized particle sizes plotted on log probability paper vs collection efficiency as a single straight line for all experimental flow rates. Three constants fully described the performance of each cyclone, and these constants could be estimated since they varied over a small range for most of the cyclones. The new generalized empirical equations should facilit...

This publication has 3 references indexed in Scilit: