Capillary Fluidic CO2 Scrubbing Aboard Spacecraft: the CVS Demonstration on ISS: Part II Results



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2024 International Conference on Environmnetal Systems


The CVS flight experiments conducted aboard ISS during April 18 – 21, 2023 focus on microgravity thermal-fluid technology demonstrations related to liquid amine CO2 scrubbing aboard spacecraft. The central objectives of the work include the establishment and limits of stable passive capillary-driven 'massively' parallel planar thin film flows across 'Contactor' and 'Degasser' as functions of flow rate, flow direction, flow resistance, heat input, viscosity gradients, condensate collection and return, fluid distribution, and interfacial stability, among others. An overview of the flight hardware including description of the components, crew procedures, flight operations, and summary of accomplishments is reported in a companion paper (Part I). This paper (Part II) highlights certain details of the tests performed, data reduction, data archive, analysis, and technology impacts. Over 49 diagnostics are recorded using a single HD video downlink during the nearly 22 hours of operations.


Mark Weislogel, IRPI LLC, USA
Logan Torres, IRPI LLC, USA
Oleg Krishcko, IRPI LLC, USA
Ben Bizeau, IRPI LLC, USA
Ryan Jenson, IRPI LLC, USA
Julie Levri, NASA Ames Research Center, USA
Grace Belancik, NASA Ames Research Center, USA
Darrell Jan, NASA Ames Research Center, USA
Selda Heavner, NASA Ames Research Center, USA
Lawerance Hand, NASA Ames Research Center, USA
John Graf, NASA Johnson Space Center (JSC), USA
ICES306: Physico-Chemical Life Support - Air Revitalization Systems - Carbon Dioxide Removal - Technology and Process Development
The 53rd International Conference on Environmental Systems was held in Louisville, Kentucky, USA, on 21 July 2024 through 25 July 2024.


microgravity fluid mechanics, capillary fluidics, carbon dioxide, co2, wet scrubbing, ISS, engineering development, technology demonstration, space experiments, flight experiments