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kdbeall_

HN member
Joined
Thu, Apr 01, 2021, 4:25 AM UTC
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17
Public activity
22 items

About kdbeall_

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Recent public activity

  1. comment
    Comment #33556443

    > New lower level reserves will be even more expensive to the point where the LCOE of solar is around the raw uranium price. No. From the World Nuclear Association, "doubling the u…

  2. comment
    Comment #33553580

    > then you run out of uranium Won't happen anytime soon. There's a lot. We have a century's worth, and the uranium price could easily be three times higher, without hardly an impac…

  3. comment
    Comment #33551704

    > A 2022 PERC cell has an EBPT of about 3-6 months Okay, so there's a new solar cell that is slightly better and perhaps can be manufactured a little cheaper. Great! So what? You h…

  4. comment
    Comment #33540437

    This is a mostly dumb and gimmicky idea. It will fail. If we want serious climate solutions we need either a massive build-out of nuclear power or wind plus utility-scale battery (…

  5. comment
    Comment #33319064

    Oh, so the Dutch government should expropriate their land?

  6. comment
    Comment #32282952

    Wow, this was a puff piece

  7. comment
    Comment #31903505

    They aren't. See the average EV in China.

  8. comment
    Comment #31073952

    Vanadium redox flow batteries have energy densities of ~10–20 Wh/kg. But for grid storage I think even sodium-ion batteries would be a better candidate. Those have energy densities…

  9. comment
    Comment #31056286

    Yeah, LFP is arguably good enough for 80% of all EVs is my guess. Arguably it is also good enough for energy storage as well. However, for EVs, LFP doesn't have as high energy dens…

  10. comment
    Comment #31044085

    Ask an attorney. I don't think non-compete agreements are valid in some states like California.

  11. comment
    Comment #31043854

    These are both pretty bad takes. We as a civilization do not mine the crust for uranium. We mine high-grade ore deposits. I think with our current resources and technologies we cou…

  12. comment
    Comment #31043687

    Energy density and availability of materials. Li-S ballpark is 550 Wh/kg while conventional lithium-ion is around 200 Wh/kg. Using nickel, cobalt, and other expensive metals is not…

  13. comment
    Comment #31035281

    Depends on what tech comes out. If lithium-sulfur batteries and perovskite solar cells go into mass production I think nuclear will be one of the smaller contributors. Nuclear work…

  14. comment
    Comment #31035255

    Nuclear is not suited for peaker plants. It probably never will be. The fuel is a small part of the cost of a nuclear plant. This is why battery tech is key to energy transition. I…

  15. comment
    Comment #31035130

    > Because mining nuclear materials is an ecological disaster. Also, guess who's a big exporter of uranium in Europe? Russia. Cameco could easily restart Rabbit Lake and McArthur Ri…

  16. comment
    Comment #30940715

    Also, gold content of asteroids is incredibly low. You'd be lucky to find a metallic asteroid with even 1 ppm of gold. Mines here on Earth often have grades above 4 ppm. The highes…

  17. comment
  18. comment
    Comment #30725701

    Kind of? Think Chicago — it's hub for all sorts of agricultural commodities.

  19. comment
    Comment #30376393

    This mission architecture is kinda cool It could fit in neatly with Starship

  20. comment
    Comment #30376315

    I'm not firmly in the terraforming camp, but something I'd like to point out is that humans don't need exactly 1 atm. About 0.5 atm would be sufficient. It's analogous to what is f…

  21. comment
    Comment #30376210

    > mars is nothing more than a further, more annoying version of the Moon. This is simply wrong. Mars has had the geological processes necessary for ore formation. Whereas the Moon …

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