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Long-Term Operation of a Water Electrolysis Module
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English
Abstract
TRW, under NASA sponsorship, has developed a water electrolysis module (WEM) designed to provide 3.6 lb/day of oxygen at a current density of 100 amps/sq ft and at a pressure level of 80 psia. Although designed for aircraft application, the concepts employed in the design of the module make its use in other life support systems possible.
One of the ten-cell water electrolysis modules fabricated, and designated as WEM No. 1, has been successfully operated for 7525 hr. These hours consist of 300 hr of parametric, 180 hr of cyclic, and 7045 hr of endurance testing, to date. The endurance test program is being conducted at a current density of 80 amps/sq ft, a temperature of 175 F, and a pressure level of 30 psia.
This paper describes the cell and module configurations and the materials of construction selected. Results of the parametric and cyclic test programs are presented and cell performance and servicing and maintenance requirements discussed. The endurance test program of WEM No. 1 is presently continuing.
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Citation
Schubert, F., "Long-Term Operation of a Water Electrolysis Module," SAE Technical Paper 690643, 1969, https://doi.org/10.4271/690643.Also In
References
- Kiraly, R. J. Babinsky, A. D. Quattrone, P. D. “On-Board Oxygen Generating System.” Paper 680716 presented at SAE Aeronautic and Space Engineering and Manufacturing Meeting, Los Angeles October 1968
- Inglefinger A. L. Secord, T. C. “Life Support for Large Space Stations.” Presented at AIAA Fifth Annual Meeting, Philadelphia October 1968
- Wydeven T. Johnson, R. W. “Water Electrolysis: Prospects for the Future.” Trans. ASME 90B November 1968 531 540
- Schubert, F. H. Huebscher R. G. Wynveen, R. A. “Oxygen Generation for Life Support Systems Through Water Electrolysis.” Paper presented at Aerospace Medical Association 40th Annual Scientific Meeting, San Francisco May 1969