Ask HN: What are you surprised isn’t being worked on more?

Re:Ask HN: What are you surprised isn’t being worked on more? by jhayward on Monday December 28, 2020 @11:26PM (#25566711)

There's a very useful and up-to-date writeup of the four main types of geothermal projects, and the latest (AGS) that features 1) no injection wells or other fluid contact down-hole, 2) re-using existing oilfield wells when possible, 3) no need for "hot rock" steam flashing, and 4) no parasitic energy use for pumping (thermosiphon). Well worth the read.

The author, Dave Roberts, is a reliable read in the energy world and has recently launched a Substack dedicated to energy.

[1] https://www.vox.com/energy-and-environment/2020/10/21/215154...

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Re:Ask HN: What are you surprised isn’t being worked on more? by akramquraishi on Tuesday December 29, 2020 @12:40AM (#25567078)

Using Graphene to radiate heat from deep holes to the surface is also one other area being worked on.

Graphene has exceptionally high thermal conductivity, 12000x of copper:

https://futurism.com/thanks-to-graphene-we-may-harness-the-l...

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