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cell oltages were as low as 1.38V at current densities of 108 mA/cm (100 ASP) and temperatures of 355K (180F). At the end of 30 days o testing the cell voltages were still only 1.42V at 108 mA/cm * Determination that the Static Feed Water Electrolysis Module does not release an aerosol of the cell electrolyte into the product gas streams after a break-in period of 24 hours following a new electrolyte charge * Completion of a detailed design analysis of an electrochemical Oxygen Generation Subsystem at a three-man level (4.19 kg/day (924lb/day)ofoxygen).T) Theresultsshowedthefollowing THREE-MAN OGS DESIGN ANALYSIS SUMMARY Crew Size Total 0 Generation Rate,(a) kg/day (lb/day) Fixed Hardware Weight, kg (lb) Total Equivalent Weight, kg (lb) Overall Dimension, cm (in) Total Volume, m3 (ft ) Total Power Required, kW 3 420(924) 54 0 (119) 382 (841) 41.3x438x59.7 (16 25 x 17.25 x 23.50) 0.108 (3.81) 109(b) (a) Includes oxygen requirements for the Electrochemical Depolarized Carbon Dioxide Concentrator Subsystem (b)Using power controller conversion efficiency of 85%. INTRODUCTION Technology and equipment are needed to sustain man in space for extended time periods An Oxygen Generation Subsystem (OGS) is required to generate breathable oxygen (02) onboard a spacecraft. Presently considered techniques accomplish this through the electrolysis of water with the byproduct hydrogen (H2) used within the Air Revitalization Syst 2mRS) of the spacecraft to recover 02 from expired carbon dioxide (C02) (1)Numbers in parentheses are references found at the end of this report. 2 Zie Systems, 2ite.PDF Image | STATIC FEED WATER ELECTROLYSIS PROCESS
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