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Virtual Design of a 4-Bed Molecular Sieve for ExplorationSimulations of six new 4-Bed Molecular Sieve configurations have been performed using a COMSOL model. The preliminary results show that reductions in desiccant bed size and sorbent bed size when compared to the International Space Station configuration are feasible while still yielding a process that handles at least 4.0 kg/day CO2. The results also show that changes to the CO2 sorbent are likewise feasible. Decreasing the bed sizes was found to have very little negative effect on the adsorption process; breakthrough of CO2 in the sorbent bed was observed for two of the configurations, but water breakthrough in the desiccant beds was not observed. Nevertheless, both configurations for which CO2 breakthrough was observed still yield relatively high CO2 efficiency, and future investigations will focus on bed size in order to find the optimum configuration.
Document ID
20170008969
Acquisition Source
Marshall Space Flight Center
Document Type
Conference Paper
Authors
Giesy, Timothy J. (NASA Marshall Space Flight Center Huntsville, AL, United States)
Coker, Robert F. (NASA Marshall Space Flight Center Huntsville, AL, United States)
O'Connor, Brian F. (NASA Marshall Space Flight Center Huntsville, AL, United States)
Knox, James C. (NASA Marshall Space Flight Center Huntsville, AL, United States)
Date Acquired
September 22, 2017
Publication Date
July 16, 2017
Subject Category
Man/System Technology And Life Support
Report/Patent Number
M17-5887
ICES-2017-111
Meeting Information
Meeting: International Conference on Environmental Systems
Location: Charleston, SC
Country: United States
Start Date: July 16, 2017
End Date: July 20, 2017
Sponsors: International Conference On Environmental Systems, Inc.
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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