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£if/SYst&cs, /n. Program Organization To accomplish these objectives the program was divided into four tasks: Task 1.0 2.0 3.0 4.0 Description Design, fabricate, and assemble the SFWEM, water supply, and DM Design, fabricate, and assemble the SFWEM and DM test systems Single cell and module testing Program management and data requirements STATIC FEED WATER ELECTROLYSIS MODULE The design of the SFWEM was based on the specifications set forth in the Statement of.Work (SOW) and the background knowledge that the Contractor possessed in the area of static water feed, in particular, and water electrolysis in general. Major emphasis was placed on using design concepts that allowed module operation at conditions resulting in the elimination of condenser/separators in the module's product gas lines and elimination of the need for water feed compartment degassing. Design Specifications The detailed design specifications to which the SFWEM was designed are listed in Table 1. The accepted figure for man's metabolic oxygen (02) requirement of 0.835 kg/d (1.84 lb/day) falls within the 0 generation rate specified for the SFWEM. The capacity of the module was, theiefore, sufficient for a one-man 02 generation system. The increased operating pressure range was selected to allow operation without feed water degassing and without condenser/separators. The specified performance of 1.7 volts at 107.6 mA/cm' (100 ASF) and 1.9 volts at 215.2 mA/cm (200 ASF) had been demostrated with modules in short-term operation at pressures less than 689 kN/m (100 psia). The voltage performance goal at elevated pressures and for long operating durations presented a challenge. Electrolysis Design Concepts The design of any water electrolysis module requires the definition of four basic concepts. 1. Electrolyte (acid or alkaline). 2. Electrolyte incorporation. 3. Water feed. 4. Heat removal. They are: 4PDF Image | WATER ELECTROLYSIS MODULE
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