morning_gelato
Joined 7 years ago
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56
Member since
Apr 12
Recent submissions
Comment · 3 years ago
Here is a white paper released by Fervo that describes what they've done in more detail: https://eartharxiv.org/repository/view/5704/
Comment · 4 years ago
I think carbon-intensity (gCO2eq/kWh) is a much more important metric than the use of specific generating technologies. Looking at the data [1], Germany has one of the dirtiest electrical grids in western Europe.
Comment · 4 years ago
> Synthesizing h2 from methane is also done by electrolysis
Most hydrogen is currently synthesized from steam reforming of methane [1], not electrolysis.
[1] https://www.energy.gov/eere/fuelcells/hydrogen-production-na...
Comment · 4 years ago
>This shows that Nuclear power might actually be a hindrance towards an electrified future, as governments have historically put to much faith in it, which was ultimately unwarranted, instead of investing in renewables.
Historically the countries that invested in nuclear and hydro have been most successful in lowering the carbon intensity of their energy sector. Looking at the data, Germany does not appear to be nearly as successful as France. In 2021 France's electricity averaged 68 gCO2/kWh, and Germany averaged 364 gCO2/kWh.
https://ourworldindata.org/grapher/low-carbon-share-energy?t...
https://ourworldindata.org/grapher/carbon-intensity-electric...
Comment · 4 years ago
Yes, for example Switzerland uses two of their nuclear power plants for district heating [1][2]. China has also started using it for district heating in Haiyang [3].
[1] https://en.wikipedia.org/wiki/Beznau_Nuclear_Power_Plant#Ref...
[2] https://www.world-nuclear.org/information-library/country-pr...
[3] https://www.nucnet.org/news/city-of-haiyang-first-in-country...
Comment · 4 years ago
> Nuclear power plants are not "carbon free." They have significant operational needs (indirect emissions), making them of the most expensive sources of electricity available today, and by some estimates their indirect carbon footprint is enormous
The United Nations Economic Commission For Europe released a report in 2021 on the life cycle emissions (including construction, operation, and decommissioning) of various power generation options and found nuclear to be the lowest overall at 5.5 gCO2eq/kWh [1].
Comment · 4 years ago
> Demand is usually the highest when PV output is also the highest
Not quite, the mismatch in timing between solar generation and energy demand has been called the "duck curve" [1][2]. Peak demand is normally in the evening when people are done with work [3].
[1] https://www.energy.gov/eere/articles/confronting-duck-curve-...
Comment · 4 years ago
Current geothermal technology requires very favorable geological conditions which significantly limits where it can be deployed. If EGS turns out to be both safe and viable it will mean that geothermal power plants can be widely deployed across the globe. I believe this research is also in the public interest as we want clean highly-reliable power, and EGS is one of the few technologies that can potentially provide that.
Comment · 4 years ago
There's no evidence that they are being used to breed plutonium. In fact the BN-800 burns a mixture of uranium and plutonium to reduce their weapons stockpile.
Comment · 4 years ago
> the economics for fast reactors have never worked (not even in Russia or China)
Russia currently has two sodium-cooled fast reactors that are producing power, the BN-600 and BN-800. They also have another sodium reactor under development, the BN-1200. BREST-OD-300, a lead-cooled fast reactor, is under construction as well.
Comment · 4 years ago
From what I've read[1] it looks like we should be able to use nuclear fission for a significant amount of time (>1000 years). This would involve using uranium and thorium as well as breeder reactors.
[1] https://whatisnuclear.com/blog/2020-10-28-nuclear-energy-is-...
Comment · 4 years ago
Realtek does contribute directly to the kernel, but I think it depends on which internal team is handling the device support. For their PCIe 802.11ac and 802.11ax wifi cards Realtek devs wrote and upstreamed rtw88[1] and rtw89[2] respectively.
[1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/lin...
[2] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/lin...
Comment · 5 years ago
It does not appear that this particular electricity shortage is caused by moving away from fossil fuels. The coal plant shutdowns mentioned in the article were outages (2 unplanned and 1 planned) [1] rather than permanent closures due to an energy transition.
[1] https://www.nasdaq.com/articles/kazakhstan-rations-power-aft...
Comment · 5 years ago
I think Dell and HP offer somewhat comparable sites.
Dell: https://www.dell.com/en-us/shop/partsforyourdell/index HP: https://partsurfer.hp.com/search.aspx
Comment · 5 years ago
Why did you omit the response you received from a netty developer that showed a large performance improvement[1]? Focusing entirely on the few cases where people report regressions and ignoring all of the reports of improvements isn't a good way to make an objective assessment.
[1] https://github.com/netty/netty/issues/10622#issuecomment-701...