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Re:You can have geothermal power everywhere if you drill dee... by raxxorrax on Friday February 25, 2022 @04:51AM (#30465489)
> Meanwhile, the heat vitrifies the side of the hole, turning it essentially into a glass pipe

I think this is pretty essential and maybe even more important than the depth. Until now it was not economically feasible because the porous rock did swallow a lot of the circulated water in such a drilling. But this technique seems to solve that problem pretty effectively.

Re:You can have geothermal power everywhere if you drill dee... by fly-guy on Saturday February 26, 2022 @01:10PM (#30480074)
Conventional boreholes are cased with steel and cement. Vitrified walls would theoretically save that material cost (if it actually worked)