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Unique Regeneration Steps for the Sorbent-Based Atmosphere Revitalization System Designed for CO 2 and H 2 O Removal from Spacecraft Cabins
ISSN: 1946-3855, e-ISSN: 1946-3901
Published July 12, 2009 by SAE International in United States
Citation: Ebner, A., Ritter, J., LeVan, M., and Knox, J., "Unique Regeneration Steps for the Sorbent-Based Atmosphere Revitalization System Designed for CO2 and H2O Removal from Spacecraft Cabins," SAE Int. J. Aerosp. 4(1):488-493, 2011, https://doi.org/10.4271/2009-01-2532.
An SBAR system for H2O and CO2 removal from spacecraft cabin air was studied both experimentally and theoretically. An emphasis was placed on its purgeless, deep vacuum regeneration step. Three evacuation steps were studied: 1) single ended depressurization (SED) through the feed end of the bed; 2) simultaneous dual ended depressurization (DED) through both ends of the bed; and 3) simultaneous triple ended depressurization (TED) through both ends of the bed and a port located at some axial position. TED resulted in a lower average bed pressure at the end of evacuation compared to DED, which, in turn caused more CO2 to be removed. An optimal third port location also existed. The use of TED should allow the SBAR bed size to be reduced.