baffle chamber

in atmospheric chemistry
https://doi.org/10.1351/goldbook.B00587
A chamber used in @I02997@ design to promote the settling of fly ash and coarse particulate matter by changing the direction and/or reducing the velocity of the gases produced by the combustion of the refuse.
Source:
PAC, 1990, 62, 2167. (Glossary of atmospheric chemistry terms (Recommendations 1990)) on page 2175 [Terms] [Paper]