3 ms·
I don't want to be a naysayer, but I do have to wonder, are there any risks associated with making the walls themselves store large quantities of energy? I'm t
by amarant 2y ago
I don't want to be a naysayer, but I do have to wonder, are there any risks associated with making the walls themselves store large quantities of energy?
I'm thinking fire hazards or shorts associated with, say, hanging a framed picture on the wall (or anything else that would involve drilling in the concrete)
- teraflop 2y agoI mean, one way to look at it is that the energy density of this concrete supercapacitor, when fully charged, is about 4 orders of magnitude smaller than the chemical energy density of wood. So depending on the design, electrical shorts might be something to worry about, but I have a hard time worrying about it as a significant fire hazard when compared to all of the other flammable things you might find in a house.
- killingtime74 2y ago300 watt-hours per cubic meter is not large by any means. You can get 300wh portable batteries and they are the size of a loaf of bread, this is at least 1 magnitude bigger/less dense
- Earw0rm 2y agoNot even. I've a 500wh ebike battery which is about 3 litres in volume. We're talking 1/500th the density. Which is a good thing, as EV battery fires are nasty. A lot of stored energy there!
- kwhitefoot 2y agoIt's only half the energy associated with raising the temperature of the same mass of concrete by one kelvin.