Browsing by Author "Iacomini, Christine S."
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Item Feasibility Tests of Oxygen Recovery Technology as an Internally Reforming Regenerative Fuel Cell(45th International Conference on Environmental Systems, 2015-07-12) Iacomini, Christine S.; Benjamin, Phillip; Milobar, Daniel G.A Solid Oxide Electrolysis/embedded Sabatier reactor system used to produce oxygen and methane products may provide a carbon deposition resistant system capable of internally steam reforming methane and generating power. Minimal start-up water is required; operations are sustained by recycling water from the effluent using spaceflight- qualified humidity control membrane technology. The system is gravity-independent and compact with no moving parts. Leak-tight operations are improved by employing a new glass seal approach. Laboratory tests on single cells were performed to confirm simultaneous internal methane steam reforming and fuel cell operation without carbon deposition. Tests also demonstrated seals at high differential pressure and multiple thermal cycles.Item Nafion Bundle Technology for Space Flight Humidity Control(45th International Conference on Environmental Systems, 2015-07-12) Iacomini, Christine S.; Harrell, James; Lopez, JavierNafion bundles are being made for use in spaceflight humidity control systems. To remove water from a process stream, Nafion only requires modest particulate filtration of the process stream, forced convection (i.e. a fan) to move the process stream through the bundle, and access to space vacuum or dry gas purge. Bundle quantity and configuration (parallel or series) can be adjusted to achieve a specified water removal performance requirement. Specific applications are discussed including humidity control of a spacecraft cabin, water separation/supply for air revitalization systems, and water separation/supply for in situ resource utilization systems on the moon and Mars. Nafion bundle testing has been performed to characterize water removal performance and response to spacecraft-like shock and vibration environments.