| Assuming your 278 factor is correct in value and scale (I didn't check) 9.8 * 30000 * 100 * 0.000278 * 0.0001 = 0.81732 kilowatt hours per 30 ton brick. should(?) read 9.8 * 30000 * 100 * 0.000278 * 0.001 = 8.1732 kilowatt hours per 30 ton brick. surely? 0.1 is a tenth, 0.01 is one hundreth, looks like you threw in an extra shift for luck. > My guess is it's probably a lot more expensive than batteries or pumped hydroelectric storage. Location, location, location!! Not everywhere is suitable for pumped hydroelectric - relatively few places have dams or are dam suitable. This at least fits in with modern city aesthetics and might be integrated and expanded to include dual use electric vehicle parking functionality ... (with vaguely interesting optimal usage algorithms). |
I'm still kind of skeptical. I mean, pumped hydroelectric storage is pretty cheap. It's hard to compete with that; but then maybe there are uses for a big gravity battery in a dense urban area where hydroelectric isn't an option and maybe even batteries are a potential public health and safety risk. Maybe I've spent too much time alternating between Kicad and Factorio lately, but the concept of plopping down a bypass capacitor the size of a large building to buffer out "noise" on your power grid seems kind of like a normal thing to do.