settling chamber

in atmospheric chemistry
https://doi.org/10.1351/goldbook.S05629
Chamber designed to reduce the velocity of gases in order to permit the settling out of fly ash. It may be either part of, adjacent to, or external to an @I02997@.
Source:
PAC, 1990, 62, 2167. (Glossary of atmospheric chemistry terms (Recommendations 1990)) on page 2213 [Terms] [Paper]