morning_gelato

10 ms·

1.
by morning_gelato 3y ago
Here is a white paper released by Fervo that describes what they've done in more detail: https://eartharxiv.org/repository/view/5704/
2.
by morning_gelato 4y 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. [1] https:/&#x2F
3.
by morning_gelato 4y 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-produc
4.
by morning_gelato 4y 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
5.
by morning_gelato 4y 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_Powe
6.
by morning_gelato 5y 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 f
7.
by morning_gelato 5y 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 whe
8.
by morning_gelato 5y 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 ac
9.
by morning_gelato 5y 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.
10.
by morning_gelato 5y 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 developme
11.
by morning_gelato 5y 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://whatisnuc
12.
by morning_gelato 5y 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] respective
13.
by morning_gelato 5y 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
14.
by morning_gelato 5y 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
15.
by morning_gelato 5y 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
16.
by morning_gelato 5y ago
I think we are in agreement. I was responding to the comment that stated "BTRFS delivers „classic“ RAID1 and more/better.", which is what I am disagreeing with. Requiring that mount options be changed whenever there is a driv
17.
by morning_gelato 5y ago
I would argue btrfs does not deliver "classic" RAID1. Last I checked if you lose 1 disk in a 2 disk btrfs RAID1 setup and then reboot, it will be unable to mount the filesystem until you change the mount options so that it is set
18.
by morning_gelato 6y ago
How could someone demonstrate the safety of these systems if their very association with those systems is a sufficient reason for you to doubt them? If the research and experiments of nuclear engineers, scientists, and regulators from aroun
19.
by morning_gelato 6y ago
With modern reactor designs the inherent safety mechanisms mean that humans are not in the loop to reduce reactivity or remove decay heat. Here's an example from Argonne National Laboratory: > In the first test, with the normal safe
20.
by morning_gelato 6y ago
What's a scenario where passive safety systems, say those of a HTGR with TRISO fuel, fail and cause it to go prompt critical? I'm genuinely curious about this, as everything I've read suggests this is essentially impossible d
21.
by morning_gelato 6y ago
Why is the runaway scenario unavoidable for nuclear fission? Pressurized water reactors for example have negative void and temperature coefficients, and from what I've read about potential future reactors designs (e.g. high temperature
22.
by morning_gelato 6y ago
I thought it went: USB 3.0 (5Gbps) == USB 3.1 Gen 1 == USB 3.2 1x1, and USB 3.1 Gen 2 (10Gbps) == USB Gen 3.2 2x1. Yet the article states: >Accordingly "USB 3.1 Gen 2" became "USB 3.2 Gen 1x1" and "USB 3.1 Gen 1&
23.
by morning_gelato 6y ago
Here's a post from one of the OSv developers on performance compared to Linux in 2020 [1]. It paints quite a different picture compared to those benchmarks from 2013. > While ideally a unikernel like OSv could provide better perform
24.
by morning_gelato 6y ago
I was thinking of Copenhagen Atomics' Waste Burner design where they describe their passive walk-away safety features as "Prime minister safety" [1]. > The CA Waste Burner has a set of systems governed by the laws of phys
25.
by morning_gelato 6y ago
My understanding is that these reactors are designed to have a lot of passive safety features (e.g. if all operators walk away the reactor will cool itself and go sub-critical), so quite the opposite of what you are claiming.
26.
by morning_gelato 6y ago
Small nit but BBR stands for bottleneck bandwidth and round-trip propagation time [1]. [1] https://queue.acm.org/detail.cfm?id=3022184
27.
by morning_gelato 6y ago
VSI (now called VMS Software?) just uploaded a webinar talking about their roadmap for OpenVMS, including the new hobbyist program. https://www.youtube.com/watch?v=4yYmHGp9Z3c
28.
by morning_gelato 6y ago
> The way they are handling ZFS reminds me of the way they handled Reiser4, Tux3 and Reiserfs. The latter file systems were trying to be upstreamed and ultimately did not succeed, I don't know of any interest or attempts at upstream
29.
by morning_gelato 6y ago
I've already said that the OpenZFS community is not trying to upstream it, why do you keep thinking that I'm suggesting otherwise? You continue to conflate support for out of tree kernel modules as being similar to having a separa
30.
by morning_gelato 6y ago
Sure, but that's been Greg KH's stance on pretty much every kernel module that has no chance of going upstream [1]. "Simple, get your kernel driver into the main kernel tree (remember we are talking about drivers released und

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