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s® I > Vvv Oz UJ o VOLTAIC EFF. CYCLE NUMBER USEABLE COULOMBIC EFF. ENERGY / EFF. E LL UJ Figure 25-7. cycle number....—...... —........ -..... -......... ..... -...... — .-.... —.......-. -.... PUMPS: Reference Component Number Type of Failure 55-100 Cycle Nuirtoer Preceding Failure Cycle Interval 101-200 201-300 301-400 401-500 455,459 438 437,438 Total Failures of Each Type 3 1 2 1 3 3 1 5 6 1 3 2 3 4 1 5 7 2 4 3 15 2 5 3 30 3 2 1 4 2 127 Gas recirculation 1 2 Gas injection 3 4 5 Main electrolyte 6 Store purge 7 STORE: Agitator 8 Seal leakage Worn gears and shaft Worn pump head Loss of motor efficiency Pump decoupled from motor 61 Seal leakage 98 Loss of motor efficiency 120,156 295 120 136,192 Coolant loop Decomposition loop Miscellaneous DATA ACQUISITION SYSTEM: Microprocessor based control unit Teletype MISCELLANEOUS: Low energy efficiency INDETERMINATE REASON: Charge Discharge Impeller decoupled from motor 9 Worn brushes 10 Motor turned off 11 Cooling inefficiently 12 Loss of pump motor efficiency 13 Line blockage 14 Motor control not working efficiently 15 Thermocouple not working properly 16 Fluid exchange between store and battery 17 Memory loss 18 Electrical noise causing control problems 19 Inlet tube heater not turned on 20 Controller put system in charge prematurely 21 Miscellaneous 22 Inoperative , 23 Power outage in building 24 No auxiliary chlorine 25 Plugged vent holes 26 Unknown reason 27 Low voltage 28 Low current 29 Low chlorine concentration 30 Low voltage TOTAL FAILURES IN EACH INTERVAL 189 206 350 302,398(5)* 294 130,134(2) 224 164 297(2) 113 224 295 112 301(2) Performance efficiencies of the l.VkWh battery system plotted against •Number in parenthesis indicates number of times this failure occurred. Table 25-2 FAILURE TABLE FOR 1.7kWh BATTERY 25-10 2 115 100 15 284,295 302,373 320 320(15) 303(4),320(3) 344(4),350(4) 224 320 217 230 301,344(2) 249 320 27 69 192 217,220 222,224(2) 303(2) 327(2) 301(4) 332,340 332 250 340 301 226 217,277 280 295 301,302 319(2),320(3) 495,497 220,229 322,381 492,493 499 499 452,456 463 14PDF Image | Development of the Zinc-Chlorine Battery for Utility
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