Unique Regeneration Steps for the Sorbent-Based Atmosphere Revitalization System Designed for CO2 and H2O Removal from Spacecraft Cabins

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)...

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Published inSAE International journal of aerospace Vol. 4; no. 1; pp. 488 - 493
Main Authors Ebner, Armin D, Ritter, James A, LeVan, M. Douglas, Knox, James C
Format Journal Article
LanguageEnglish
Published Warrendale SAE International 01.01.2011
SAE International, a Pennsylvania Not-for Profit
Subjects
Carbon dioxide
Evacuation
Pressure reduction
Regeneration
Sorbents
Spacecraft
Spacecraft cabins
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Summary: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.
Bibliography:2009-07-12 ICES 169705 Savannah, Georgia, United States
ISSN:1946-3855
1946-3901
DOI:10.4271/2009-01-2532