Badabinski

You’re correct that they can enter thermal runaway, they just can’t autoignite. I really suspect that if this site has been using LiFePO4 cells instead of NMC, it wouldn’t have gone up like it did. 3000 MWh of NMC cells sounds absolutely bugnuts crazy to me.

This is why you don’t use battery chemistries that can thermally run away autoignite in grid storage. The plant was using LG JH4 batteries, which use an NMC chemistry. I don’t think that LiFePO4 cells were as ubiquitous when this plant was first constructed, so the designers opted for something spicy instead.

This shit is why you use LiFePO4. It can’t thermally run away autoignite, it lasts longer, and the reduced energy density doesn’t really matter for grid storage. Plus, it doesn’t use nickel or cobalt so the only conflict resource is lithium.

EDIT: LiFePO4 batteries can enter thermal runaway, but they can’t autoignite.

We lack the materials and engineering necessary to make lifted weight storage systems enter the order of magnitude of energy storage needed to compete with batteries, let alone pumped hydro. It’s just really, really hard to compete with literal megatons of water pumped up a 500 meter slope.

I believe that the plant in question was using something besides Lithium Iron Phosphate batteries. This press release mentions LG JH4 which are deffo not LiFePO4. LiFePO4 batteries are far, far safer than other Lithium chemistries, and are now the norm for BESS (not cars tho, since they have lower energy density but better a better lifetime than NMC/NCA). This fire would not have happened with a BESS using LiFePO4 batteries.

Now that batteries with aqueous sodium-ion chemistries are becoming available, we should begin transitioning pre-LiFePO4 sites to those wholesale. Aqueous sodium-ion batteries should be even safer than LiFePO4, and while they have kinda shit energy density, they’re still fine for grid storage.

EDIT: correction, LiFePO4 batteries can run away, but they are incapable of autoignition.

Beantown

what a name for a company. I wonder someone will repost this when the whole “Lemmy is obsessed with beans” thing happens again.

EDIT: assuming this is your photo, you have a shitton of sodium cyanide there lol

That was the first one I saw. I have never experienced anything like the progression from “huh,” to “what,” to “WHAT,” to inchoate noises that came out of me as I watched him make that boat. The Fabio one is more accessible imo, but the Bezos head boat is just so fucking glorious.

I’m shocked nobody has mentioned Bobby Fingers (266k subscribers at this time). He’s a sassy Irish man with a really deep voice who makes incredibly detailed dioramas of weird moments. My favorite diorama is the one he made about Fabio Lanzoni (the sexy guy on the cover of hundreds of romance novels) getting hit in the face by a goose while riding a roller coaster: https://youtube.com/watch?v=2RIEPKEhE2s

It’s absolutely spectacular. He sculpts the faces out of clay in 1:1 scale, scans them, 3D prints them in miniature, and just goes above and beyond. The videos are funny as all fuck too, with tons of jokes with long setups. I’d highly recommend them.

It’s a thing that makes single sign-on easier and more extensible. If you have a login email matching a server side rule, you get kicked over to a different auth provider (e.g. Okta).

Still drives me absolutely fucking bazonkers though.

How could he do that to my best lad 😭

I’ve kept this vague, but still, SPOILERS ahead for The First Law series by Joe Abercrombie. SPOILERS. I’ll see if I can get the damn spoiler tag working, but SPOILERS.

EDIT: No dice, I can’t seem to get the spoiler tag working on Interstellar.

<details><summary> Spoilers for The First Law series by Joe Abercrombie</summary>

At the very end of the ninth and final book of the First Law series by Joe Abercrombie, your favorite character (possibly just of the series, but they might be your favorite fictional character ever) that you’ve spent three books getting to know and love and cherish is fucking executed in front of people they love and then you find out that execution was orchestrated by the second best character in the entire nine book series. It felt like my heart was being ripped up and I fukken wept like a small child. My partner was angry and depressed for months because this character stood for so much that was good and hopeful and then they just fucking died in such a horrible way. Joe Abercrombie is a fucking amazing writer for being able to elicit an emotional response like that and he’s a bastard for doing so. The moment is totally earned and I’d highly recommend the books. Just make sure you’re in a good place emotionally before you start the last one.

</details>

raidz2 is analogous to RAID 6. It’s just the ZFS term for double parity redundancy.

I dunno if you would want to run raidz2 with disks this large. The resilver times would be absolutely bazonkers, I think. I have 24 TB drives in my server and run mirrored vdevs because the chances of one of those drives failing during a raidz2 resilver is just too high. I can’t imagine what it’d be like with 30 TB disks.

I know this is a shitpost, but treads are not durable compared to good ol’ tires. I’ve heard that setups like this require frequent maintenance. They’re certainly more capable of handling certain kinds of terrain, but tires last longer and are simple to replace.

Hey there! I can relate a lot to what you’re saying here. I’ve often felt trapped in a bad place because all of the alternatives seem worse. I had a fairly traumatic upbringing (some emotional abuse, a little bit of physical and sexual abuse, lots of emotional neglect), and I also suffered from a fear that the people around me would mess with me and invade my privacy.

For me, the need for privacy came from a place of deep self-loathing fueled by a shitton of criticism from my dad (why can’t you do anything right/think the right things/just focus on something). I didn’t want others to see who I really was, so I went to extreme lengths to hide it from the world. Everything was locked, and I used to write my thoughts down in an intentionally opaque way to try to mask what I really felt.

I dunno if that matches your lived experience at all, but one of the consequences of all this was that I did this thing called catastrophizing. I’d become totally crippled and stuck and lost because I’d only see the worst possible outcome in every decision I might make. It’s very common for people who have suffered emotional abuse (especially for those who have their judgement, sanity, or morality criticized by their parents). I could absolutely be off base here, but like, I started feeling those feelings of doom and danger as I was reading your comment. I am absolutely not trying to minimize your situation. Catastrophizing is a horrible thing to battle with, and it takes actual traumatic catastrophies before you begin to catastrophize.

w.r.t. home invasions and safety, it might be good to reevaluate that. Is it really so dangerous that you would need to defend yourself? Like, maybe that’s the case! I grew up in a pretty safe place, so I lack the proper context to understand that fear. I do know that violent crime is very uncommon. Your situation may seem hopeless and you may feel trapped. I’ve felt that way. Just know that while some choices have risks and may feel dangerous, things don’t always go that way. You deserve to feel safe and secure.

Does runit have the equivalent of systemctl --user for managing per-user daemons like pipewire? I had some issues with pipewire recently and being able to journalctl --user -u pipewire and systemctl --user restart pipewire was a total godsend for me.

ngl, I’d think that someone with the word “water” tattooed on them in a sharpie style like that is cool. It just has a vibe I like.

Yeah, the lifespan and ability to leave a flywheel “discharged” makes me wish I could have one for my homelab (as unrealistic as that might be). I have a solar generator as a battery backup, but it’s not a true UPS with a fast transfer switch (I needed at least 3kWh of capacity for long power outages, my max draw is like 600 watts before I finish load shedding). Most of my servers can tolerate the brief voltage sag, but my R640 chokes and dies. My battery is hooked up to one of my PDUs, and I’d love to have a flywheel hooked up to the other PDU. The battery would be fully transitioned by the time the flywheel was discharged.

On the point of safety, I have a question. I feel like it’s probably easier to prove that a flywheel system is deenergized, but there is the very slight risk of confinement loss. With a chemistry like Lithium Iron Phosphate that can’t sustain a flame and doesn’t produce flammable gasses, do you feel that batteries might begin to approach the safety of flywheels? It sounds like you have actual experience with flywheel systems, so I’m quite curious.

EDIT: holy shit, someone is actually selling a 300 KVA flywheel system on eBay for $30,000. I wonder who the hell would buy something like that used.

EDIT: I said “very slight risk” of confinement loss, and I should probably correct myself. The risk is ridiculously, stupidly small for a system like I linked above. Maybe the bigger systems that get buried and have concrete poured on them are riskier, but I don’t know if people even do that anymore for datacenters.

Full disclosure, I haven’t watched the video, I’m just going off of the other comments. Mechanical energy storage is definitely already a thing. Flywheels are the past, present, and future of energy storage in certain niches. My dad was a PM for IBM for many years and told me all about installing them while building out datacenters in the 90s. They’re great for powering large loads while a generator spins up. They’re, uh, not really that great for multi-day storage. You’re going to lose energy no matter what. Magnetic bearings won’t help this, they still have something analogous to friction.

Anything other than batteries or pumped hydro is probably a fool’s errand when it comes to grid-level storage. You’re not going to make a crane big enough to compete with millions of gallons of water pumped up a hill. You’re not going to be able to make a flywheel spin fast enough to compete with millions of gallons of water pumped up a hill. Do not try to compete with the water using your giant spinning death wheel or big dumb crane. Batteries get a pass because they’re dense as fuck and very simple to deploy.

Brainrot.

Yep, I put hundreds of hours into Red Alert 2 as a youngun. I would absolutely play the shit out of a remake, provided a map maker was furnished or created by the community. I fucking loved custom RA2 maps.

I can definitely see how that’d be someone’s first thought. In general this is just a weird-ass question lol.