Browse Publications Technical Papers 2009-01-2388
2009-07-12

PLSS Scale Demonstration of MTSA Temperature Swing Adsorption Bed Concept for CO 2 Removal/Rejection 2009-01-2388

Metabolic heat regenerated temperature swing adsorption (MTSA) that is incorporated into a Portable Life Support System (PLSS) is being explored as a viable means of removing and rejecting carbon dioxide (CO2) from an astronaut's ventilation loop. Sorbent pellets, which were used in previous work, are inherently difficult to heat and cool quickly. Further, their use in packed beds creates a large, undesirable pressure drop. Work has thus been done to assess the application and performance of aluminum foam that has been washcoated with a layer of sorbent. A to-scale sorbent bed, which is envisioned for use by a Martian PLSS, was designed, built, and tested. Performance of the assembly in regards to CO2 adsorption and pressure drop was assessed, and the results are presented here.

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