Mathematical Analysis of a Novel Approach to Maximize Waste Recovery in a Life Support System

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NASA has been evaluating closed-loop atmosphere revitalization architectures carbon dioxide, CO2, reduction technologies. The CO2 and steam, H2O, co-electrolysis process is another option that NASA has investigated. Utilizing recent advances in the fuel cell technology sector, the Idaho National Laboratory, INL, has developed a CO2 and H2O co-electrolysis process to produce oxygen and syngas (carbon monoxide, CO and hydrogen, H2 mixture) for terrestrial (energy production) application. The technology is a combined process that involves steam electrolysis, CO2 electrolysis, and the reverse water gas shift (RWGS) reaction. Two process models were developed to evaluate novel approaches for waster recovery in a ... continued below

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McKellar, Michael G.; Wood, Rick A.; Stoots, Carl M.; Mulloth, Lila & Luna, Bernadette February 1, 2011.

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NASA has been evaluating closed-loop atmosphere revitalization architectures carbon dioxide, CO2, reduction technologies. The CO2 and steam, H2O, co-electrolysis process is another option that NASA has investigated. Utilizing recent advances in the fuel cell technology sector, the Idaho National Laboratory, INL, has developed a CO2 and H2O co-electrolysis process to produce oxygen and syngas (carbon monoxide, CO and hydrogen, H2 mixture) for terrestrial (energy production) application. The technology is a combined process that involves steam electrolysis, CO2 electrolysis, and the reverse water gas shift (RWGS) reaction. Two process models were developed to evaluate novel approaches for waster recovery in a life support system. The first is a model INL co-electrolysis process combined with a methanol production process. The second is the INL co-electrolysis process combined with a pressure swing adsorption (PSA) process. For both processes, the overall power increases as the syngas ratio, H2/CO, increases because more water is needed to produce more hydrogen at a set CO2 incoming flow rate. The power for the methanol cases is less than the PSA because heat is available from the methanol reactor to preheat the water and carbon dioxide entering the co-electrolysis process.

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  • Report No.: INL/EXT-11-21041
  • Grant Number: DE-AC07-05ID14517
  • DOI: 10.2172/1009154 | External Link
  • Office of Scientific & Technical Information Report Number: 1009154
  • Archival Resource Key: ark:/67531/metadc845099

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • February 1, 2011

Added to The UNT Digital Library

  • May 19, 2016, 3:16 p.m.

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  • Nov. 29, 2016, 7:28 p.m.

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McKellar, Michael G.; Wood, Rick A.; Stoots, Carl M.; Mulloth, Lila & Luna, Bernadette. Mathematical Analysis of a Novel Approach to Maximize Waste Recovery in a Life Support System, report, February 1, 2011; Idaho Falls, Idaho. (digital.library.unt.edu/ark:/67531/metadc845099/: accessed October 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.