kdbeall_

4 ms·

1.
by kdbeall_ 4y ago
> 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 uranium price (say from $25 to $50 per lb U3O8) takes
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by kdbeall_ 4y ago
> 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 impact to utilities, and unlock more reserves a
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by kdbeall_ 4y ago
> 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 have failed to take into account the burden of energy
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by kdbeall_ 4y ago
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 (or potentially ammonia) storage. Solar energy has a ridiculo
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by kdbeall_ 4y ago
Oh, so the Dutch government should expropriate their land?
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by kdbeall_ 4y ago
Wow, this was a puff piece
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by kdbeall_ 4y ago
They aren't. See the average EV in China.
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by kdbeall_ 4y ago
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 of ~150 Wh/kg. Vanadium is mostly produced as a b
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by kdbeall_ 4y ago
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 density. Something like 70% of all cobalt is mined in the D
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by kdbeall_ 4y ago
Ask an attorney. I don't think non-compete agreements are valid in some states like California.
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by kdbeall_ 4y ago
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 could sustain demand for about 100 years. Nuclear energy is use
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by kdbeall_ 4y ago
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 scalable.
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by kdbeall_ 4y ago
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 works best where there's limited hydroelectric, wind, and s
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by kdbeall_ 4y ago
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. If lithium-sulfur batteries can be produced at scale, we won&
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by kdbeall_ 4y ago
> 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 River. Supply is no issue. Claiming that mining uraniu
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by kdbeall_ 5y ago
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 highest grade mines have above 20 ppm of gold. Second, let&#x
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by kdbeall_ 5y ago
Kind of? Think Chicago — it's hub for all sorts of agricultural commodities.
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by kdbeall_ 5y ago
This mission architecture is kinda cool It could fit in neatly with Starship
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by kdbeall_ 5y ago
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 found in Bolivia's altiplano. Mar&#x
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by kdbeall_ 5y ago
> 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 largely lacked those processes. Furthermore, Mars is rich
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Show HN: xattrdb the extended file attribute powered 'database'(github.com)
1 points by kdbeall_ 6y ago|0 comments