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Development of an advanced static feed water electrolysis moduleA Static Feed Water Electrolysis Module (SFWEM) was developed to produce 0.92 kg/day (2.0 lb/day) of oxygen (O2). Specific objectives of the program's scope were to (1) eliminate the need for feed water cavity degassing, (2) eliminate the need for subsystem condenser/separators, (3) increase current density capability while decreasing electrolysis cell power (i.e., cell voltage) requirements, and (4) eliminate subsystem rotating parts and incorporate control and monitor instrumentation. A six-cell, one-man capacity module having an active area of 0.00929 sq m (0.10 sq ft) per cell was designed, fabricated, assembled, and subjected to 111 days (2664 hr) of parametric and endurance testing. The SFWEM was successfully operated over a current density range of 0 to 1076 mA/sq cm (0 to 1000 ASF), pressures of ambient to 2067 kN/sq m (300 psia), and temperatures of ambient to 366 K (200 F). During a 94-day endurance test, the SFWEM successfully demonstrated operation without the need for feed water compartment degassing.
Document ID
Document Type
Conference Paper
Schubert, F. H.
Wynveen, R. A.
Jensen, F. C.
(Life Systems, Inc. Cleveland, Ohio, United States)
Quattrone, P. D.
(NASA Ames Research Center Moffett Field, Calif., United States)
Date Acquired
August 8, 2013
Publication Date
July 1, 1975
Subject Category
Man/System Technology And Life Support
Report/Patent Number
Meeting Information
Intersociety Conference on Environmental Systems(San Francisco, CA)
Accession Number
Distribution Limits

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