71–80 of 127 posts
Hello hath no fury like a lithium ion battery fire.
As a firefighter, the training I've had tells me that they're generally no big deal. You spray water on them to keep the overall temps down, and wait. Not a big deal. The main difference is that they don't tend to go out quickly, so you may be stuck nursing it as it burns itself out for a long time.
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Someone just recommended this to me the other day! I must also recommend the recently-deceased legend Sebastiao Salgado's photos from Kuwait oil fires. https://publicdelivery.org/sebastiao-salgado-kuwait/
https://m.imdb.com/title/tt3674140/ I watched this movie on cinema a decade ago. Highly recommended.
That "deltic" engine just for the water pumping is incredible, I'd never seen that cylinder layout before. > https://en.wikipedia.org/wiki/Napier_Deltic
The type 55 "deltic" locomotives, named after army regiments used to do the east coast Edinburgh-London train run, there were 22 of them in service and one in the science museum London. They had the first 100mph rating for diesel passenger service. The engine had a unique characteristic whine or whistle. As an avid train spotter at Waverley station in edinburgh I loved hearing it, saw every one and was in the cab of…
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H-h-how did you learn this?
The hard way.
Also, please set up something like this or give me a link to a North American fire department that has such high production value videos: https://www.youtube.com/@BrandweerLunteren
I just love that the guy literally bikes to the fire station in like a minute and he's not even the first guy to arrive or just barely. And the others following in the van are like a couple minutes out at most. Where I am, the volunteers at the fire department have to be there within 15 minutes plus the time it takes to get to the actual fire.
(no worries I understand that the Netherlands is a much different country with regards to fire hydrant infrastructure and closeness to the station from the US / NA, at least/especially the rural US/Canada. I just want such awesome videos from other places around the globe really)
SysAdmin related: I was once talking to a fire chief and I asked about how much water the fire engines carried. He said that they carry about enough to put out the typical house fire. The first engine on scene immediately jumps to fighting the fire. The second engine on scene hooks the first engine up to the water supply before going on to fight the fire. I've often thought about that when there's a work crisis: If I…
Our engine holds 1200 gallons. It goes in first* and starts putting the wet stuff on the red stuff. As the engine drives in it drops a 3" hose along its path. Next is our big tender with 3000 gallons. It stops at the street and connects to the dropped hose to pump more water up to the engine. The tender also has a drop tank -- think about a portable kids' wading pool but much larger and deeper. Shuttle tenders refill…
I was a farm hand as a summer job to cover beer and books in my college years. We harvested wheat which carries a high fire risk. Most farms kept a tractor with a large plow hooked up so it could quickly encircle and contain any fires.
Pulling a 40’ wide plow is hard. Tractors can do it because they have huge engines that suck in huge amounts of oxygen.
Just like fires.
If you get a tractor too close to a fire it starves for oxygen and stalls out. The plow becomes an anchor. There’s just enough time to bail out before the tires catch fire. After a few minutes the whole thing is a pile of ash and melted steel.
2400 hp sounds like a lot, but a Model X Plaid is 1020 hp. I assume it couldn't output 1020 hp for as long though.
torque is the more important figure. Which is why 13l truck engines output only about 600hp.
>and flow over 10,000 gallons per minute at low pressures if the situation called for it. When the pressure was ramped up to to 350psi, it could move 8,800 GPM. That sounds counterintuitive . What about higher pressure will slow water down? The price of the system was huge. It's a theme that as we move to better and more efficient systems they become more boring. Most of the magic of driving is lost in electric vehic…
I suppose that means back-pressure. More back-pressure on a pump means it can't provide such a high flow rate at the same power output because power = flow rate * pressure.