| CAES (Compressed Air Energy Storage) "Compressed air storage vs. lead-acid batteries" (2022) https://www.pv-magazine.com/2022/07/21/compressed-air-storag... : > Researchers in the United Arab Emirates have compared the performance of compressed air storage and lead-acid batteries in terms of energy stored per cubic meter, costs, and payback period. They found the former has a considerably lower CAPEX and a payback time of only two years. FWIU China has the first 100MW CAES plant; and it uses some external energy - not a trompe or geothermal (?) - to help compress air on a FWIU currently ~one-floor facility. Couldn't CAES tanks be filled with CO2/air to fight battery fires? A local CO2 capture unit should be able to fill the tanks with extra CO2 if that's safe? Should there be a poured concrete/hempcrete cask to set over burning batteries? Maybe a preassembled scaffold and "grid crane"? How much CO2 is it safe to flood a battery farm with with and without oxygen tanks after the buzzer due to detected fire/leak? There could be infrared on posts and drones surrounding the facility. Would it be cost-advisable to have many smaller tanks and compressors; each in a forkable, stackable, individually-maintainable IDK 40ft shipping container? Due to: pump curves for many smaller pumps, resilience to node failure? If CAES is cheaper than the cheapest existing barriers, it can probably be made better with new-gen ultralight hydrogen tanks for aviation, but for air ballast instead? Do submarines already generate electricity from releasing ballast? (FWIW, like all modern locomotives - which are already diesel-electric generators - do not yet have regenerative braking.) |