“Just to meet business-as-usual trends, 115% more copper must be mined in the next 30 years than has been mined historically until now,” the study said.
“Just to meet business-as-usual trends, 115% more copper must be mined in the next 30 years than has been mined historically until now,” the study said.
And it is being tried right now: https://www.electricmotorengineering.com/aluminium-windings/
Some of the stuff about that company says it’s doing aluminum windings and some of it says they’re doing no windings with flux barriers and air gaps. What’s up with that, different experimental technologies?
I’m skeptical of their claims about it being environmentally friendly since more stuff made out of aluminum means more aluminum being pulled out of the ground, but it’ll be interesting to see that develop.
E: their claim that it’s environmentally friendly because it’s got less rare earths makes sense now because they gotta use iron instead cause of the resistivity. I’m genuinely interested to see how much weight or volume savings they get and the efficiency for a given power output compared to a traditional copper and rare earth motor.
It really seems like a strange step backwards (not an insult, plenty of old technologies are perfectly valid and their manufacturing techniques need to still exist) to get cheaper components that sidestep the cost of shipping recycled copper around.
At some point the high cost of recycled materials has to be integrated into the supply chain somehow otherwise the benefit of having recycled them will never be realized. This technology seems like a scheme to increase consumption without dealing with the consequences of previous consumption.