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NASA NTRS · 20230013205

Lunar Passive Fuel Cell Technologies: Evaporator + Fluid Polishing Elements

Thomas Cognata
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Abstract

This project investigates key elements of a fully-passive, fuel-cell based, surface power generation concept. The overall concept replaces the actively pumped thermal management of a state of the art (SOA) fuel cell/electrolyzer stack with a passive 2-phase thermosyphon for heat transport and a passive shape memory actuating radiator for temperature management. The elements of the concept investigated in this project are: Evaporator Element: Evaluating the compatibility of common fuel-cell interconnect materials in the evaporator of a 2-phase water thermosyphon Fluid Polishing element: The use of membrane gas separation and resin water polishing to address non-condensable gas removal and water purity.

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Fuel Cellthermosyphonthermal managementwater polishingdeionized water

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Thomas Cognata. Lunar Passive Fuel Cell Technologies: Evaporator + Fluid Polishing Elements. https://ntrs.nasa.gov/citations/20230013205

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