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Life SsteMs. JVnc. The electrical requirements of the STS are 24 to 32 VDC at 286 watts and 115 VAC, 400 Hz at 100 watts when the SFWEM was operating at design conditions. Manual control for module current and temperature were contained on this panel as well as the pushbuttons to send the system to the two operating modes, i.e., STOP and ON. Included on the panel are pushbuttons to allow testing of all indicator lamps and resetting of stored information contained on the trend analysis lamps, an indicator to show when the water tank is being filled, and switches to allow the operation of all system functions manually. STATIC FEED WATER ELECTROLYSIS TESTING The objectives of the testing were to (1) prove the SFWEM design concept at the single cell level, (2) experimentally characterize the SFWEM performance, and (3) evaluate new electrodes and matrices. To accomplish these objectives a test program was completed: The SFWEM test system checkout and shakedown tests. Module Design Verification Single Cell Tests. The SFWEM testing (shakedown, parametric, and 90-day endurance). Component evaluation single cell tests. SFWEM Test System Checkout Tests STS was assembled and all components had been installed, a series of checkout tests were performed. These tests were designed to ensure that the STS performed to its.specifications, contained no leaks and was ready for SFWEM use. During this testing several leaking fittings were identified and replaced. A faulty system pressure transducer was also discovered and returned to the vendor for correction. Module Design Verification Single Cell Tests These tests were performed to verify the integrity of the SFWEM design before beginning fabrication of the six-cell module. The tests consisted of2operating the cell at ambient temperature at urrent densities up to 1076 mA/cm (1000 ASF), and pressures up to 1724 kN/m (250 psia). Effect of Current Density The single cell was operated at current densities up to 1076 mA/cm2 (1000 ASF) to verify that the electrical and electrochemical performance was as designed. Figure 22 shows the results of the current density test. The low slope in the curve obtained indicates low IR losses, verifying that good electrical contact and connections between the electrodes and the current collectors and between adjacent cells was achieved with the SFWEM design. The capability of the cell to sustain operation at the high current density levels shown indicated that the design objective of decreased resistance to water feed and increased electrode- matrix-electrode tolerance to electrolyte volume fluctuations had been attained. four-part 1. 2. 3. 4. After the S0PDF Image | WATER ELECTROLYSIS MODULE
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