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Post something Weird or Random

I got a donut purse

AB1A933D-5BF1-4815-9623-FC0170F37AB7.jpeg
 
MildredHubble said:
Batteries are great things but also kinda half baked (no pun intended). I think the only real hope on the horizon is Super Capacitors or hybrid Lithium Ion Super Capacitors. This would drastically decrease the amount of lithium involved.
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For domestic power infrastructure Sodium Ion is the way to go. It doesn't get hot, it's half the price and it has a higher energy density.

https://en.wikipedia.org/wiki/Sodium-ion_battery
 
Outdated said:
I've seen a few interviews with different people running their diesel cars on recycled oil from restaurants. This works perfectly, no engine modification required, but if you live in a colder climate you have to add a little bit of kerosene to the oil to thin it down.

All of them have said similar things, that you can smell the difference of what restaurant your oil came from. One bloke collected oil from a doughnut chain and his exhaust smelled like doughnuts.

Brisbane's suburban bus service has been exclusively running on Canola oil for 20 years now. They report that power and fuel economy are identical to running on diesel but they noted one huge difference. With canola oil they don't get any where near as much carbon and tar build up in the cylinders and it has cut their maintenace costs dramatically.
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You can treat waste veggie oil with lye to make it as fluid as regular diesel. I've done it. Heavy machine operators often use a rig that starts the engine on regular desel, but then runs it on straight veggie oil thinned by exhaust heat.
 
Outdated said:
For domestic power infrastructure Sodium Ion is the way to go. It doesn't get hot, it's half the price and it has a higher energy density.

https://en.wikipedia.org/wiki/Sodium-ion_battery
Click to expand...
Where the geography has possibilities, pumped hydro power is still the cheapest storage. If I were setting up off-grid, I'd consider using the wind to pump water, and only make electricity as needed.

About 33 years ago, I was at a tech conference, and got a bonus lecture for over an hour from one of the world's top battery experts. He figured that battery performance had pretty much peaked. We'd never get the mercury out of Alkaline cells, or get lighter batteries for electric cars. Now, there seems to be news about new chemistries and constructions every month, and many of them seem plausible.
I wonder if someone will try using a built-in mechanical element to remove dendrites.
 
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