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Measurement of Trace Water Vapor in a Carbon Dioxide Removal Assembly Product Stream
Technical Paper
2004-01-2444
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The International Space Station Carbon Dioxide Removal Assembly (CDRA) uses regenerable adsorption technology to remove carbon dioxide (CO2) from cabin air. CO2 product water vapor measurements from a CDRA test bed unit at the NASA Marshall Space Flight Center were made using a tunable infrared diode laser differential absorption spectrometer (TILDAS) provided by NASA Glenn Research Center. The TILDAS instrument exceeded all the test specifications, including sensitivity, dynamic range, time response, and unattended operation. During the CO2 desorption phase, water vapor concentrations as low as 5 ppmv were observed near the peak of CO2 evolution, rising to levels of ∼40 ppmv at the end of a cycle. Periods of high water concentration (>100 ppmv) were detected and shown to be caused by an experimental artifact.
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Authors
- Joda Wormhoudt - Aerodyne Research, Inc.
- Joanne H. Shorter - Aerodyne Research, Inc.
- J. Barry McManus - Aerodyne Research, Inc.
- David D. Nelson - Aerodyne Research, Inc.
- Mark S. Zahniser - Aerodyne Research, Inc.
- Andrew Freedman - Aerodyne Research, Inc.
- Melissa Campbell - Hamilton Sundstrand
- Clarence T. Chang - NASA Glenn Research Center
- Frederick D. Smith - NASA Johnson Space Center
Citation
Wormhoudt, J., Shorter, J., McManus, J., Nelson, D. et al., "Measurement of Trace Water Vapor in a Carbon Dioxide Removal Assembly Product Stream," SAE Technical Paper 2004-01-2444, 2004, https://doi.org/10.4271/2004-01-2444.Also In
References
- Wormhoudt, J.C. Miake-Lye R.C. “Technical Support of Measurements of SO 2 , SO 3 , HONO, CO 2 ,” Aerodyne Research Report RR-1362 NASA Glenn Research Center 2003
- McManus, J.B. Kebabian P.L. Zahniser M.S. “Astigmatic Mirror Multiple Pass Absorption Cells for Long Pathlength Spectroscopy,” Appl. Opt. 34 3336 3348 1995
- Jeng, Frank F. et al. “Analyses of the Integration of Carbon Dioxide Removal Assembly, Compressor, Accumulator and Sabatier Carbon Dioxide Reduction Assembly,” Paper 2004-01-2496 34 th Intenational Conference on Environmental Systems Denver, CO 2004