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Supercritical CO2

submitted by Boardallday3 to videos 2.8 yearsAug 29, 2022 11:53:24 ago (+44/-0)     (files.catbox.moe)

https://files.catbox.moe/71wt6o.mp4



22 comments block


[ - ] La_Chalupacabra 3 points 2.8 yearsAug 29, 2022 14:11:08 ago (+3/-0)

[ - ] Boardallday3 [op] 1 point 2.8 yearsAug 29, 2022 14:19:37 ago (+1/-0)

That's even crazier. I've heard at the center of Jupiter and Saturn there is "liquid metallic hydrogen" but there's no way to study it in a lab.

[ - ] Crackinjokes 3 points 2.8 yearsAug 29, 2022 12:40:02 ago (+3/-0)

This seems a lot like basically an ion chamber that you can use to see the traces of atomic particles. They're kind of easy to make homemade I believe if you put alcohol on top of CO2 and if I'm calling correctly in the alcohol forms of vapor which makes it easy to see any radioactive particles going through the vapor as they leave little trails.

[ - ] Boardallday3 [op] 1 point 2.8 yearsAug 29, 2022 13:24:08 ago (+1/-0)

True. I think you put alcohol on dry ice, and the alpha particles make water vapor trails. https://en.m.wikipedia.org/wiki/Cloud_chamber

[ - ] x0x7 1 point 2.8 yearsAug 29, 2022 20:32:07 ago (+1/-0)

And it doesn't need to be pressurized like this.

[ - ] PotatoWhisperer 0 points 2.8 yearsAug 30, 2022 03:35:02 ago (+0/-0)

It's a cool project to do with the kids.

[ - ] usedoilanalysis 2 points 2.8 yearsAug 29, 2022 12:25:08 ago (+2/-0)

They can make turbines that work with SCCO2, they're much more efficient that steam turbines because CO2 maintains its density much better than steam. Getting the gas to a SC state is a bit tricky in a loop.

[ - ] deleted 0 points 2.8 yearsAug 29, 2022 13:16:41 ago (+0/-0)

deleted

[ - ] La_Chalupacabra 0 points 2.8 yearsAug 29, 2022 14:12:55 ago (+0/-0)

Sounds like a good candidate for a Stirling engine.

[ - ] AugustineOfHippo2 2 points 2.8 yearsAug 29, 2022 12:20:15 ago (+2/-0)

what's the youtube channel?
want to show stuff like this to my kids.

edit: oh duh, it's in your comments! just call me retard.

[ - ] KeepPoal4fags 2 points 2.8 yearsAug 29, 2022 14:34:28 ago (+2/-0)

He got the chamber from another channel called "applied science" which is even better than "nile red/blue"

Ben at "applied science" does supercritical CO2 oil/alkaloid extraction from plant matter.
https://m.youtube.com/watch?v=UxAjlmaUNzs

[ - ] KeepPoal4fags 2 points 2.8 yearsAug 29, 2022 14:39:42 ago (+2/-0)

[ - ] Peleg 0 points 2.8 yearsAug 29, 2022 18:35:37 ago (+0/-0)

I DUB THE @AugustineOfHippo2Retard

[ - ] Clubberlang 1 point 2.8 yearsAug 29, 2022 23:19:59 ago (+1/-0)

When you put oxygen on an aircraft you use liquid oxygen to fill a bottle within the plane.

Sometimes this drips into the pan below and for some reason attracts flys and all sorts of bugs in the summer.

We used to dump the pan onto the tarmac after we were done and stomp on the bugs which would make a loud popping noise equivalent to a cap gun.

[ - ] deleted 0 points 2.8 yearsAug 30, 2022 00:01:29 ago (+0/-0)

deleted

[ - ] I_am_baal 1 point 2.8 yearsAug 29, 2022 15:35:18 ago (+1/-0)

Neat, I love stuff like this

[ - ] TardWhisperer 1 point 2.8 yearsAug 29, 2022 14:35:10 ago (+1/-0)

Phase-changes in general are always fascinating. Cool video!

[ - ] usedoilanalysis 1 point 2.8 yearsAug 29, 2022 15:42:02 ago (+1/-0)

Your run of the mill combustion engine does just that. Oxygen and Nitrogen are ionized by your spark plug, along with a mix of hydrocarbons composed largely of hydrogen and carbon. The ionized gases, from the spark energy break the triple and double bonds in the hydrocarbons, liberating hydrogen from the carbon molecules. The oxygen bonds with the free carbon molecules, releasing energy, a chain reaction occurs, until the kinetic energy starts merging oxygen with nitrogen. The self limiting reaction is when air starts to merge with itself.

The reason fuel works is because the constituents of combustion have a much higher density than air does. CO2 for instance, the main byproduct of combustion, maintains its density, and since it's under pressure CO2 is in a supercritical state in the combustion chamber for a split second. NOx has higher density than air, and coincidentally maximum cylinder pressure is achieved in the NOx producing region.

Know why your car runs shitty when combustion is incomplete? You still have high temperatures, but a lot of carbon monoxide which has lower density than air and loses density more than air does with temperature.

It's not just heat from the formation of water and CO2 that drives your engine, it's the fact that these molecules have higher density than air does at those temperatures. Air density goes down with temperature increase, which is why air needs to be compressed, to work in a jet engine. The temperature of the air at the end of the compressor is almost 600 degrees F, but it's compressed 15:1(~220psi), so even though density has been lost with heat, the pressure ratio overcomes whatever is lost in density through sheer mass flow.

[ - ] Boardallday3 [op] 1 point 2.8 yearsAug 29, 2022 17:31:14 ago (+1/-0)

N2 from air isn't broken or ionized in a combustion engine. Nitrogen bonds are triple bonds, and are very strong. That's why nitrogen is a component of the best explosives. The German scientist Fritz Haber found a process to turn nitrogen into fertilizer and was awarded the Nobel Prize.
https://youtu.be/EvknN89JoWo
(Veritasium sucks but that's a good video)

[ - ] usedoilanalysis 0 points 2.8 yearsAug 29, 2022 18:30:26 ago (+0/-0)

Not directly, the heat and pressure in the cylinder breaks the nitrogen bonds in the air and allows oxygen to bond with it. This is an endothermic reaction, and as previously stated a self limiting reaction in the process of gasoline combustion.

https://en.wikipedia.org/wiki/NOx
NOx gases are usually produced from the reaction among nitrogen and oxygen during combustion of fuels, such as hydrocarbons, in air; especially at high temperatures, such as in car engines.

Natural sources
Nitric oxide is produced during thunderstorms due to the extreme heating and cooling within a lightning strike. This causes stable molecules such as N2 and O2 to convert into significant amounts of NO similar to the process that occurs during high temperature fuel combustion.

Spark plugs produce somewhere in the realm of a 50,000-100,000 volt discharge, it creates enough focused energy to ionize and create nitric oxide at the spark gap.

[ - ] Boardallday3 [op] 0 points 2.8 yearsAug 29, 2022 19:23:51 ago (+0/-0)

Yeah not directly. Atmospheric nitrogen N2 bonds aren't broken, only by the spark plugs like lighting.

https://en.m.wikipedia.org/wiki/Nitrogen_cycle

[ - ] x0x7 0 points 2.8 yearsAug 29, 2022 19:08:33 ago (+0/-0)*

I never realized how low a pressure that's done at. I've always seen their thick metal and thick polycarbonate setups and thought that was some serious shit. 75psi isn't that much. You can get pretty close to it in a 2 liter bottle. I've gotten to the high 60s by hand. They aren't rated for that much but you can do it if you're ballsy enough.

The generic brand bottles where they don't have the equipment to make thin walled bottles consistently go several multiples past their rating.

[ - ] DeborahBirxesCunt 0 points 2.8 yearsAug 29, 2022 15:17:56 ago (+0/-0)

Supercritical CO2 Theory: CARBON LIVES MATTER YOU FUCKING BIGOT

[ - ] x0x7 0 points 2.8 yearsAug 29, 2022 19:29:23 ago (+0/-0)

Some people really reach for the shoe horn. You're gonna need one of these to reach it.