2023-06-152023-06-152023-07-16ICES-2023-56https://hdl.handle.net/2346/94502Jesus Dominguez, Insight Global/Jacobs Space Exploration Group (JSEG), USAShannon McCall, Qualis Corporation /Jacobs Space Exploration Group (JSEG), USALorlyn Reidy, NASA Marshall Space Flight Center, USAKagen Crawford, NASA Marshall Space Flight Center, USAKaitlin Oliver-Butler, NASA Marshall Space Flight Center, USACara Black, NASA Marshall Space Flight Center, USABrittany Brown, NASA Marshall Space Flight Center, USABrian Dennis, University of Texas at Arlington, USAWilaiwan Chanmanee, University of Texas at Arlington, USAJoseph Fillion, Jacobs Space Exploration Group (JSEG), USAKenneth Burke, NASA Glenn Research Center, USAICES300: ECLSS Modeling and Test CorrelationsThe 52nd International Conference on Environmental Systems was held in Calgary, Canada, on 16 July 2023 through 20 July 2023.The International Space Station (ISS) is presently equipped with an elaborate, heavy, and high-power consuming system that recovers approximately 50% of O2 from metabolic CO2 as part of the atmospheric revitalization (AR) at the ISS habitat. Future long-duration missions will require a more sustainable and efficient system capable of yielding a minimum of 75% O2 recovery to reach the self-sufficiency required for long-duration space missions beyond Earth’s low orbit. A Microfluidic Electrochemical Reactor (MFECR) technology development effort is currently underway at NASA Marshall Space Flight Center (MSFC) to not only increase significantly current O2 recovery efficiency, improving self-sufficiency on AR at the ISS habitat and future long-duration missions, but also reduce system complexity. The authors have developed and deployed a comprehensive 3D multiphysics model that thoroughly replicates the actual configuration and fluid/material domains of the MFECR. The coupled physics in this multiphysics model include multicomponent-multiphase electrochemical-driven reactions, non-ideal mass transport mechanism, free and porous flow, heat transfer, CO2 solubility on alkaline electrolyte, water condensation on porous medium, and DC electrical current generation along with Joule heating effect. This model is aimed to conduct qualitative benchmark on three different MFECR layouts, one without serpentine paths (plain) and two with serpentines leading to four and twelve paths respectively. Once experimental data is generated via a test matrix of 200 tests, the model will be validated to conduct MFECR process optimization and revalidate the qualitative benchmark on three different MFECR layouts.application/pdfengECLSSEnvironmental Control and Life Support SystemMultiphysics modelingElectrochemical modelingO2 conversion from Metabolic CO2Presentations