Making Dry Ice from scratch
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- Опубликовано: 16 май 2024
- In this video, I'm going to show how to make dry ice (frozen CO2) from scratch. I thought using dry ice to pre-cool my pulse tube cryocooler might help me get lower temperatures, since dry ice is -79C, and adding my pulse tube's ~100C temperature drop on top of that could get me very close to liquid nitrogen temperatures. But instead of just buying dry ice, I wanted to see if it was feasible to make it myself, so I went through the steps of producing, cooling/compressing, and discharging the CO2
as liquid to form ice.
There are several ways to produce CO2 - a few of these are:
-Reacting acid with baking soda
-Cooling and collecting exhaust from combustion of hydrocarbons
-Capturing exhaust from yeast as it consumes sugar
-Capturing human breath
-Dissolving atmospheric CO2 in water and extracting it under vacuum
-Reacting atmospheric CO2 with Calcium Hydroxide, creating Calcium Carbonate, then decomposing the Calcium Carbonate to release CO2 and Calcium Oxide. The Calcium Oxide is later regenerated back into Calcium Hydroxide with sodium hydroxide.
Once the CO2 is captured, it has to be stored. In theory, large gas bags could be used, but that's not very practical, so i used a fridge compressor to force the captured gas into a compressed air tank at ~160 PSI (about 12 bar). Using a 10 gallon (38L) tank, i stored approximately 1.8 lb (0.82kg) of CO2 gas.
However, to freeze CO2, it first has to be liquified by either high pressure, very low temperatues, or both. To liquify at room temperature around 25C requires about 60 bar of pressure (~867 psi), but my compressor was only capable of producing about 400 psi (about 28 bar). In order to liquify the CO2 at this pressure, i had to put the tank in an ice bath at 0C.
Even this wasn't quite enough, though, so to get a little bit of extra pressure, i fed the output from the 12 bar tank into the suction side of my compressor, allowing it to produce close to 600 PSI at the discharge side. In the ice bath, this was enough pressure to liquify the CO2, but it took a little over an hour to transfer and condense the CO2 from the 12 bar tank. I collected about 500 grams of liquid CO2 in the high pressure tank.
Once I had the liquid CO2, i turned my high pressure tank upside down so that the liquid would come out first, and discharged it. Liquid CO2 can't exist at 1 atmosphere of pressure, so as soon as it comes out of the tank, it flash freezes to dry ice at -79C.
The tricky part is capturing the frozen CO2, since most of it blasts out into the atmosphere. The container being used to capture the ice needs to be vented to work properly, but not vented too much, or else all the CO2 will be lost. To do this, I tried a sock (effectively a porous container), which probably collected less than 20% of the CO2 from the tank as ice, and came out in a fine powder, meaning it didn't last long. The second approach used a mold with velt holes, but i only recovered about ~2% of the CO2 this way.
I think the key to creating a block of dry ice is to discharge relatively slowly into a mold. I had my valve full open, and I think instead of allowing ice to collect and settle in the mold, the flow was blasting it out.
Ultimately, the time and cost of producing the dry ice from scratch make it impractical as a pre-cooler for liquid nitrogen generation.
Music Used:
Kevin MacLeod - Lobby Time
Kevin MacLeod - George Street Shuffle
Kevin MacLeod - Groove Groove
For those who are curious, the "KSP Soundtrack" is "Groove Groove" by Kevin MacLeod. Kerbal Space Program used several Kevin MacLeod tracks for their music in early development because they're royalty free, and left them in the game even after they started producing their own soundtrack music.
@@criticalevent Not really. Better to buy the CO2 unless you happened to already have large quantities of the reagents on hand
Might have been a bit easyer if you used like a water chiller for like a laser, they can get super chilled for around 150 bucks and have pretty powerful compressors.
at 14:10 you should really be wearing some gloves for thermal safety from frostbite, aka frozen skin & body tissue. Which is very is nasty & painful to experience. You can quickly cause your hands to become damaged, in very a painful way as they thaw and the flesh may be necrotic. Requiring amputation. Freezing your flesh or "Frostbite"(the name trivializes how serious it can be )is something people climbing mountains like Everest fear more than falling. Cool experiment and great teaching video , just please think about preserving your body.
I used to work with dry ice in large amounts on shows, often breaking big blocks from the storage coolers into small pieces so they hard more surface area for the dry ice fog machines. There few more safety rules you want to follow, but that bare skin contact is big no no for the risk. Even if just momentary.
13:12 oh god no lol XD
@@ablemagawitch NO
This is so underrated. C'mon, this stuff is much better that all of pop-science channels put together
Trapped farts. LMAO
I know as much as I love channels like NileRed, everything has become clickbait-y and unoriginal.
@@jacobb7608 well okay, not all 1M+ channels suck, but most of them for sure
Explosions&Fire / Extractions&Ire (sis channel) and LabCoatz also don't suck. 😉👍
Although, the latter is just starting out and last time I checked, he only had 20K subs with NileRed's help (I stumbled across him at 10K, and also mentioned him in a E&F community post).
Chemiolis, chemdelic, and chemical force are also great
I used a very simple dry ice puck maker designed for special effects use. It was two disks of wood with velcro hook strips glued and stapled on them, and a pipe connector tapped into one the disks. In use, a larger velcro strap was applied around the two disks with a gap for the puck of dry ice to form inside. Then liquid CO2 was blown in until the puck started making slight creaking noises. When the velcro was undone there was a nice solid puck of dry ice inside.
That was an impressive way of making enough CO2. I wonder if the first compressor was angry about being started under pressure, since they aren't really designed for that.
It may not have been broke, could have just been the starter burned out, easy replacement. There is also a chance it melted some insulation because he ran a heavy load with no cooling (usually refrigerant provides cooling in addition to the oil.) Lastly, he plugged it in with no load (rotor) so of course it'll just overheat and definitely short at that point. It's impossible to say.
I love the carefully included humour and educational value of your content.
I agree
yea, the mask thing had me rolling
newest addition to the crusty sock collection!
3:32 - You need to add an air stone diffuser to your bubbler/scrubber to reduce sloshing and improve absorption of fumes and such. The sloshing is depleting your desiccant capacity too quickly as can be seen with the dripping into your drier. Also add some salt to your ice bath for a few extra degrees of cooling. You can get down to -21C with enough salt, reducing your pressure requirement for condensation down to just 19 bar.
"It could eeeasily be lethal... Anyway"
Stay safe!
If that tread fails all that pressure is released. Frosts damage to skin, suffocation, loss of hearing and turning bottle into ballistic missile that has enough force to punch trough brick wall are the very potential consequences depending on detail like location, top of turning that peace into impro bullet. Local trade school had student be poked to weld cap to pipe, fill it with oxy acetylene mix and hit the spark. End result lead to whole welding section moving it self to walls and removing all the windows in 50 meter radius. Top of that all the gas bottles also went to walls from several broken the valve off and turned into ICBM's going trough the brick wall, metal roof like it was not there. Furthest away one was found 100 meters away, mind those bottles are really heavy even when empty. This one has less mass and pressure, but its still enough to be dangerous if you fuck something up, so learn what is needed to make it safely, well as consider all the risks constantly. Its better if you can do everything remotely from behind the brick wall or similar shield to hinder it and mind having well ventilated area that allows co2 be replaced with fresh air fast. Full lung full of co2 can knock you off pretty damn fast.
Safety 3rd, right?
@@Hellsong89 Yeah I've heard a couple of oxy acetylene bombs go off and they go off with one hell a bang lol. I guy I know made one when he was an apprentice welder. Set it off in the workshop and ruptured his bosses ear drums. He wasn't an apprentice there after that 😂😂
So true,
But so is an outlet
Or gasoline.
That being said, again true,
Well said
@@Hellsong89 päüää
Ä0ä0äü0ä
Your DIY chemical engineering is so awesome and inspiring. I’ve studied this stuff in school, yet between all the thermodynamics, transport phenomena and kinetics classes, I can’t think of a better way to demonstrate the spirit of engineering than what you’re doing right now. Keep up the good work!
What else does he make at home? lol
His wife.. happy
I am so used to watching Nile Red and all of his proper glassware and then I find you... I sub'd the second I saw the gatorade bottles as test equipment. Now I know we are about to learn some sketchy fun stuff. This is how I experiment in my garage too. Sometimes you just want to learn but don't have every single part so you just make it out of normal household goods.
you’re level of ingenuity is inspiring!! definitely got yourself a new subscriber!🤘🏽
I work at a big box store in the plumbing department. Sometimes we get people trying to do such creative projects. I'm glad that you understand the danger.
Thank you for allowing us to live vicariously with your videos!
Stay safe!
Hey I love my custom built muskets.
Can ya elaborate on these homemade blunderbus lol
@@humannotanalien8675 You can make the best cannons from scrapped hydraulic cylinders. They even come with a built in pivot and touch port🫣💥
@@amosbackstrom5366
Ha ha !
Yikes. Closest I've come to that was making a u-bend nozzle for my pressure washer to clean gutters from the ground, and even that sketched me out.
I remember seeing in a science equipment catalog, maybe Edmund back in the day, a dry ice sock, the use of which I never explored. I hadn't thought about that in probably 20 years or more until you tied the sock to the outlet. "Hey, so that's how it works!"
I remember that in the Edmond catalog, it came with a denim sock to collect the ice.
@@bobbyvarnell9350 is there anything special to it(material it's made of or something) or is it basically just a sock?
@@KibitoAkuya I think you just want a thick material. You can buy the bags and make your own with a tank of co2. It wastes a lot though. They also make these little plastic blocks that you can release the co2 into. Also wastes a lot of co2. This is fine if you only need to make a little bit every once in a while. Anything more than that and you'll want to spend 5k on a machine that pulls co2 out of the air and makes dry ice like a regular ice machine.
@@kathleenrobertpogue6818 And in-between those, just buy the dry ice directly.
@@KibitoAkuya Denim is good because it's relatively smooth so the dry ice doesn't tend to stick to it.
Our setup used a denim sock surrounding a laboratory beaker, it seemed to be very effective.
Testing the co2 by extinguishing flames is essentially the mechanism by which welding gas works. Keeps the oxygen out to keep the metal from burning and reacting with atmosphere making oxides and shit. Argon does that also but also assists in maintaining an arc.
Humor, knowledge, and safety, perfect!
You, sir, deserve an internet.
Thank you
I think there is still a lot of potential to increase the yield by precooling the CO2 liquid to reduce the vapor pressure.
Try using a bath of ice in saturated saltwater to get it below 0°C.
Also you could take inspiration from the Linde process:
Fix a copper tube to the CO2 pressure vessel and squeeze the end nearly closed, so that the flow of CO2 is throttled there instead of the valve.
Put this upside down inside a thermos bottle or dewar - preferably a narrow one.
The CO2 cools at the throttle at the bottom of the thermos. The escaping gas will then precool the liquid in the copper tube and increase the yield.
Of course you must make sure the copper tube can take the pressure. It might be brittle at low temperature.
Good idea, but you could even use a thermos bottle instead of a Dewar.
Using ordinary table salt (NaCl) can get down to -7 °C or 20 °F. Other salts can get a lower temp, but are not as readily available (you would have to order them online instead of getting it at the grocery store).
@@jimellis1496 In Northern states, you can get rock salts from the grocery store during winter. They can help bring the temp to -15°C.
@@Rollyn01 Actually, the freezing point of NaCl and water is 18 °C. I think CaCl2 and water is -40 °C.
I used such a cold solution of NaCl when I was distilling benzene. It was a bad idea. The benzene froze in the graham condenser (coiled tubing).
@@louistournas120 Soooooooooo... CaCl2 + H2O + Stirling heat pump = a really good cryocooler is what I'm hearing? 🤔🤔🤔
I was fearing another silly video with no redeemable science - but instead got physical chemistry and a wealth of information about bodged together pressure fittings! Now, all you needed to do was add some salt to the ice to further lower the temperature below 0C and you would have made my day! Thanks for sharing this! (btw, I'm a p chemist by training - very well done!)
Utterliy fascinating project! Thank you for going through all that and sharing this with the world!
Your Embraco is a R134 refrigerant. In order to reach high pressure you should use a R404 or R410 refrigerant type of compressor. Danfoss series SC12CC or SC15CC. Also preferably look for a "medium back pressure" as they are suited for higher current through the stator. Putting current through the stator without the rotor running results in no counter EMF (Electro Magnetic Force). Every stator will burn if you do what you did. Notice that all hermetic compressors are protected with a bi-metal current limiter. So the click you heard probably is the over current protection, which will reset itself automatically. When you start experimenting with ethylene, make sure the first trap is at least -30'C, otherwise pressure will be too high. Use preferably R410 in your first stage. For the second stage you will be unable to find an expension valve. You can only run this stage using capillary. It is a long way to get a two stage system working from scracttch or know-how. You can reach me via linked-in, Roland van Hall - Tamson Instruments.
Isn't it great watching homeowners try to do refrigeration?
Seems to me like you chose the grippiest material to gather dry ice onto. Thin pillowcases perform much better and its easier to get the dry ice out of them, also dry ice packs rly nice, so u dont have to go straight into pellets. I also think a 3D printed nozzle of some kind could help with creating more snow.
We use a commercially available horn and a denim bag to collect the dry ice.
At a guess, motors often have lower torque starting up than when running, the compressor got to a high enough pressure that while it could still run, the load was too high for the motor to be able to start again, it stalled and instantly burned out.
Compressors actually release pressure when stopping, so that when they start the next cycle, the starting torque doesn't have to fight the pressure inside.
Electric motors produce the most torque when the rotor is stalled. Depending on the type of motor the torque will drop off as the speed rises.
The piece is called a “unloader valve” and releases the compression in the cylinder when the motor cycles off.
Even if the motor was locked it wouldn't instantly burn out. It would draw 2-3 times it's rated current but still take a while to burn out.
@@jonathonhaberkorn233 true of some types of motor, but not all: induction motors which are quite common tend to have this weird humped torque speed curve, where the torque grows to a peak and then shrinks again
@@fascistpedant758 it’s not burned up. It’s a pressure lock. Refrigerant systems don’t use an unloader valve. They have what is called a “compressor delay” if you have ever programmed a thermostat this is the variable that allows the pressure on the high and low side to equalize before starting the pump. These compressors are very high efficiency and rely heavily on the inertia in the rotating mass to achieve the high pressures that are needed. Chances are he could have let the pressure out and it would have started right up.
Really enjoyed the video!! Thank you for putting this all together!👍
Those little compressors are usually cooled by "cold/cool" refrigerant in the return/suction. It was probably working so hard windings got hot and shorted. Like others have said, lubrication is important too.
Definitely interesting! Thank you for all of that time, work, and effort to make the video
Brilliant video. I love how you implement the science with minimal equipment and look for creative rather then expensive solutions :D
As someone who fills cryogenic liquids, the lack of ppe is both realistic and terrifying 😂
Yes, was noticing no gloves. Even in the HVAC field, minor frostbite is common without gloves.
@@todd8155 In HVACR we don't wear gloves with refrigerants specifically because the tips of the gloves soak up the refrigerant before it all boils off. It can actually make things worse. If you know what you're doing and don't have your head up your ass there shouldn't be a situation where your fingertips are coming into contact with refrigerant in the first place, outside of a fraction of a second when you're disconnecting your gauges. I tried wearing gloves when I first started, that stopped on my 3rd call. 20 years later it's smooth sailing and properly callused fingertips.
@@RT-qd8yl - Thanks for the info!
thanks for posting this A++@@RT-qd8yl
I would recommend Adding a ball valve after the needle valve that you already have in place so that you can set the flow rate and open and close the outlet as necessary. It may also be beneficial to try an atomizer Nozzle similar to what is used in heating oil furnaces.
Nice to see your funny commentary. I was a ammonia operator we used ammonia as a refrigerant making lco2 and dry ice. Our main compressor was 1,750 hp. At 220 psi. The lco2 got down to -21 f before going out to our tanks. 5 tanks at 220 tons each. Btw only fill refrig. Tanks 80% max.
That was incredibly interesting and really fun to watch. One of the most informative and entertaining videos I've ever seen.
Awesome Upload!! Thank you very Much!!
You could add salt to the ice bath to lower the temperature even more and make your poor compressor happier (or at least not that unhappy!) by not having to reach a pressure as high.
Might even be able to liquefy oxygen if you do a 2-stage using the dry ice with an acetone bath to cool the second stage
one of the best videos out there, thanks for sharing
Thank you. You answered like 3 questions ive been asking my self for years.
Great video, I've been wanting to do a co2 generator for a while "sodastream from scratch" type of thing, definitely going to steal some ideas from you 😉👍
Something I was wondering in your last cyrocooler video, it did seem to be getting stuck at around dry ice temperatures. Given you were continuously taking in fresh air (and having to dehydrate it), perhaps you were getting CO2 freezing up inside of your system? At any rate, if you 'recycle' the exhaust, you wouldn't have to do as much drying. But, same goes for closed loop hydrogen, etc.
If you do go the cascade refrigeration way, take a look at making some "R469" - its just a mix of CO2 and R410a (easily recovered from dehumidifiers, etc). Much easier to get than ethane or ethylene, but won't freeze at -55C (triple point at 5Bar) like pure CO2 would. I'd probably add some propane to the mix too for oil solubility goodness. (or better, "MAPP Gas", which is just propylene, boils 10c colder).
Also, add a heat exchanger, warming up the suction line to the compressor, using the 'heat' left in the refrigerant after the condenser. Bit of warmth makes for more oily oil, and makes sure all the bits of the blend have boiled off.
If you haven't played much with diy compression systems before, /other than running stupid high pressures which will cook the motor/ (or, near zero flow, depriving it of cooling) they're a lot more forgiving/harder to fuck up than various tradespeople on forums/youtube/anywhere will go on about - in terms of captube sizing, "fuck it, whats there might work" often does. BBQ tank propane+butane+stinkgas bastard mix will work in just about any system. There is roughly nothing in this world which needs to be brazed, (cheap-ish, "silver bearing", plumbing solder 100%. Cheap, by-the-litre-from-pharmacies "fatty cream" moisturizer+zinc oxide+Hcl= plumbing solder flux), and no brazing means no nitrogen purging (I use CO2 sometimes) - though I flush any flux, etc out of a system with ethanol first. Nothing needs to be vacuumed for more than 30 minutes, if it does, its leaking. (Oh, and try not to vent ODP/high-GWP refrigerants like the "professionals" do. Its so easy to recover them into old gas torch bottles for playing with later)
I have a 20 lb CO2 cylinder for making soda water. It is not expensive to refill so that would be an option for CO2. Back in the 1980's I worked for Liquid Carbonic and we took CO2 from a fertilizer plant (waste CO2 from the manufacture of nitrogen based fertilizer) and processed it then filled railcars and trucks with the CO2. The plant had sold dry ice also (but by the time I started working for them they had stopped making and selling dry ice). The industrial equipment for dry ice was still there and we could still make some.
I love this stuff. The utility of everything around u makes then best alchemist
This is bonkers! Subscribed.
Your crusty sock collection joke just earned you a like lol
Absolutely howled at the "crusty sock collection"...
oh, and wicked video BTW. Thank you for your time and effort!
A very exciting and comprehensive example.
Refrigerator compressors need to have the oil coming back in the return pipe. This lubricates the motor, cools the winding and provides the wet bath to seal the piston in the cylinder bore. Maybe drip some compressor oil into the intake? It will mean that the output from the compressor will be expelling an oil mist, which your set up will probably need to deal with. This video is good stuff!
Actually most of the oil does not dissolve in the refrigerant, with stationary home style compressors the oil usually stays in the compressor (unless it gets hot like in this circumstances). You really don't want the oil to get into the gasses being compressed, so, hmmm, using a little compressor like this one would need to fine a way to cool the oil. In automotive uses the lubricant, at least with R12(mineral), r134/R152a (PAG, etc.) the oil is soluble and flows with the refrigerant through the whole cycle.
Very cool, I have seen the sock thing done before. This is a lot of work and equipment to pull off. I think it's easier to buy co2 in a cylinder from a welding supply store , cheaper also. But fun video keep up the great content
the cheapest way to source co2 is to pick up a siphon tube co2 bottle as used for soda fountains, they can be picked up for under $50 and refilled for far cheaper than a larger co2 bottle
Such a fantastic learning video. Thank you🎉
Cheers🥂
This is an awesome video man, definitely falling down this rabbit hole and very informative!
Domestic refrigeration compressor’s need off cycle pressure equalisation to start, they can’t start against differential pressure, simple refrigerant metering devices such as the capillary tube that they generally use do this provided there’s enough off time. Normally the Klixon provides some protection in the event of a short cycle restart
really interesting and ive been wanting to see someone do this method, also a little note: i suggest you get some borosilicate beakers, blowtorching that isopropyl in the glass had me a little bit scared as common soda lime glass tends to shatter on heating and ive done that far too many times
i love how you've essentially made a homemade co2 fire extinguisher. i bet you could refill empty ones in the same way 😄
(yes i know that's a horrible idea for many reasons)
As someone who *_doesn't_* know why that would be a bad idea... I'm certainly open to hearing why that would be. ☺️
@@DUKE_of_RAMBLE
i guess its not that doing it is inherently unsafe (you can basically do it as safely as the video) but the danger lies in actually using it as a primary fire safety device.
because (as far as i know) fire extinguishers are extremely regulated devices intended to be refilled exclusively by a certified service company as to insure the upmost reliability, as a faulty fire extinguisher can really make a bad situation MUCH worse
its kinda like building your own parachute for skydiving. can you do it? probably. should you do it? probably not
@@StellaFoxxie Actually, most people who skydive DO pack their own chutes... And if you've ever met any of the people who service fire extinguishers, you'd know this guy has his shit together way better...
@@kleetus92 i meant like sewing your own parachute, out of like bedsheets. and of course you can refill a fire extinguisher easily, that's the whole point of the first comment. why are you so hostile?
@@StellaFoxxie Who's hostile? I'm just saying this guy not only has all his ducks in the same pond, they're also in a row!
There's more cool science info packed into ithis sixteen minute video than probably the last 10 or so other videos I've watched combined. Thanks for the subscription.
Great channel! I am your newest subscriber. Great presentation! Awesome demonstration, excellent pacing, digestible graphics...and O THANK YOU for using your human voice!! On THAT note, consummate job with the audio! Your voice over is so easy to listen to and the music is perfect choice and so expertly tempered against the V.O. throughout!
I have a bar and we used large CO2 bottles for our keg system. The large cylinders are called 50lb CO2 cylinders and cost about $50 bucks to fill up. You can have them filled at a fire extinguisher dealer cheap. Most dealers can also recertify a tank of any variety. Should be able to find some cheap cylinders. For CO2 our tanks stay around 800 psi
Is the CO2 used to refill fire extinguishers "food grade"? Do you have to worry about impurities when using fire extinguisher CO2 with beverages?
I wonder if the CO2 used with paintball guns is food safe?
I've been meaning to get some small CO2 tanks for pneumatic projects. I'm pretty sure CO2 provides much more working gas than pressurized air in a comparably sized of container.
@@ddegn Seltzer bottles use common CO2 carts like airguns use. I've never seen anything about having to use "food grade" CO2 in them.
@@Centar1964 Good to know. Thanks.
@@Centar1964 That's "food grade" CO2 because it's just clean CO2, I don't know if the CO2 used in fire extinguishers is suitable for food use or not.
But CO2 cylinders used for welding have some oil from the compressors, at least some of them.
You will always burn compressor without starting device what is sitting on connector to steel egg that compressor sitting in. compressor have double winding... one for working and one for starting. This starting winding gettin power thru thermistor in starting device only for few seconds, because thermistor getting hot and resistance rise rapidly. Normally spark and boom comming from thermistor and many times You just have to change it to keep compressor starting again.... You can even use crued methood and use momentary switch to energize starting winding. Best regards.
This video was literally the coolest thing I've seen this week
Thanks for this video. Not only did I learn a simple way to make dry ice, but also a way to store wood gas.
I think even if the motor was still okay powering the windings without the rotor like that can set it on fire, because if there is no ferrous something for them to magnetize their inductance is way lower.
"with a little bit of force, a standard barbed fitting can be pushed into the inflation valve of the beach ball, and now we've got our gas bag"
gets me every time
Eat your heart out Mr. Wizard! This is great! well done HP!
Unorthodox. Cavalier. But literally cool and awesome! Thanks for sharing.
Every time I watch a chemistry video, I feel like I'm acquiring forbidden knowledge, thus becoming more powerful
*In a sense u r .. which should make u question many things*
Have you played with vortex tubes? They're pretty neat.
They separate the hot and cold air molecules and at their respective exits can boil or freeze water by using only compressed air at common pressures (I ran them off the regular pneumatic/air taps at work).
Cool, any videos of that?
@@willyouwright actually yes! Linus Tech Tips has a video where they tried to cool a computer. The video title is "This is a CPU Cooler?"
ruclips.net/video/Hn8hDY4bvpI/видео.html Here's one on machining one.
Very interesting thanks. Watching the CO2 powder just disappear was sublime.
Love the attention to detal,just awesome, great job!!😎👍
Very nice. What types of fittings would be appropriate for those pressures if one was concerned about safety?
A proper adapter for the paintball tank fitting would be fine. I just jury-rigged mine by drilling/tapping
Hydraulic. Hvac refrigerant lines are usually rated at 10k or 8k psi but brass fittings “shouldnt” explode. But its not like those 10$ home depot fittings are stress tested to pressures that high when theyre sold as water fittings.. ive gotten brass fittings new out of box with hairline cracks and at those pressures a defect in the casting will blow apart a fitting with enough force to embed pieces in your meaty parts.. plus a hose burst or sudden purge of 1000 psi will also easily rupture an ear drum.. not from the pressure differential of the room but the sound that shit makes is crazy loud.. i had a 450psi pop off valve go on me once and had it on recording. What the camera picked up was just psssd. But what i heard was a bbrrrrrrr.. thought that was wild..
When considering which fittings to buy, you're quickly going to realize that the ones you NEED are pretty expensive. If you can cross reference them from Chart Industries to their supplier, you'll be fine. I maintained the equipment at an Industrial and medical gas distributor and there's so much that can kill you in a project like this that while fun and cool, it's like playing with dynamite. Safe until it's not.
English brass/copper ,yorkshire fittings WITH OLIVE RINGS . YOU CAN G#ET FROM PLUMBERS MERCHANT S in U,k.
You could have added a lot of salt to the ice bath to drop the temperature below 0 .... wonder how much that would help you keep the pressure more down...
I figured out how you figured this out .. the dog 🐕... The brains of the operation... Dude your amazing! Thanks for the video!
Beautiful , Interesting and very well explained, congratulations and thank you for shearing your knowledge
Now this is, some cool shit
Hmm ... at what pressure does your baking soda+acid reaction still produce CO2? It's not going to easily stop just because there's already a high pressure of CO2 around, right?
Could you sidestep a big portion of this process by directly making the CO2 in a pressurized system? Instead of running the chemical reaction at 1 atmosphere and then pressurizing, just letting the reaction itself make your pressure. Maybe it's more hassle than worth but it would be cool.
you would find the equilibrium point of partial pressure for this reaction
I was not able to find how much pressure this reaction could produce but I think it's pretty high. I did find examples of using baking soda and acid to launch rockets made from 2L pop bottles.
I think your idea is worth investigating (as long as I don't have to do the work).
@@ddegn Chemical reactions like this (just by looking happening instantly) tend to be able to push a lot of pressure. Dangerously high ammount in fact which is why I would personally never "investigate" this idea as you say. But for those who know how to be safe about these things...
thank, you for you're video. this, works great and last a long time.👍
With no load and not all ferric parts in place resistance will be very low in the windings and will thereby very easily be heated up if used incorrectly.
Very nice video! I've been working with dry ice production for a few years. Nice to see some hobby production!
13:16 Making it the newest addition to my crusty sock collection 😂😂😂
Had to look that one up, definitely shouldn't have 🤦
This guys like I did a thing and Nile red at the same time
This is pure genius!
This was fun. I was not expecting to stay for the whole video. Good video
Actually backed away from screen as gauge approached 800psi
You can easily convince me to wear a mask, but no shot that I'm carrying around a CO2 tank. Or a fucking beach ball.
Absolutly loved the video! All aspects of it. Subscribing and looking forward to more!
Awesome food for thought. I love the humor as well. Thank you
This is AWESOME
09:00 I was half-expecting a "get well soon" card lying off tot the side. You have a great sense of humor man, keep it up :)
I worked in air-conditioning and refrigeration and enjoyed this video.
Very entertaining!! Basic chemistry! Awesome and amazing
Excellent presentation. Subscribed.
You are a very brave man.
Congratulations on 100k!
Awesome.tysm for sharing
Just found you and I gotta say I'm already loving this. You are like Cody's Lab but more concise. As for your cryo cooler, perhaps if you used another means of cooling it, like a salt bath as salt tends to have a cooling effect on water.
The big brained move though would be to figure out how to use the cryo cooler to cool itself down. But I doubt that will work very well without a closed looped system that will work against what you intend to use it for.
love the video and the info is amazing and u keep it interesting the whole time!!
I'm impressed 👍! Ty
Now this is a truely scientific spirited video, congratulations friend!
Wow! The compressor collection beachball storage setup was simple genius.
Thank you Pirate, very cool
I loved that the step-by-step process was easy to follow. I think a couple more iterations and you'd make as much as you want.
I never laughed so hard on one of these howto videos. Love your sense of humor. Keep it up.
Very cool! Great job and fantastic narrative!! (Latest addition to my crusty sock collection!🤣)
This is powerful knowledge
This is a job well done.
Love this., have co2 tanks id like to refill myself. Most of these tools including lab equipment, vacuum pump, we already have. Fun stuff.
I love this stuff.
Have you seen commercial dry ice production? They expand the liquid into a large chamber which makes CO2 snow, then compress the snow into large blocks that are then cut into smaller blocks with a band saw. You can make the snow just need a way to gather it and then compress it into the final form. Your video is great, thank you.
Put salt in the ice bath. It will get colder and you can condense the gas at a lower temp and pressure. There are other things you could add also. In addition you might want to make sure you purge air from the hoses. Good luck.
Great video, thanks for uploading. As a bit of a science nerd and a new subscriber I really am enjoying your videos. My first encounter with chemistry was way back on the 1960’s in an English Grammer school, a sort of Private but state funded place,
… where we had really cool stuff to play with and did some really crazy stuff that is certainly not allowed now. I once accidentally sniffed bromine gas, but luckily no long term effects and the science labs demos were awesome. Looking back giving 15 year olds access to sodium, magnesium, potassium nitrate, a load of dodgy hydrocarbon based liquids, hydrochloric and sulphuric acid was probably not too smart. But hey, we also had an armoury with live rounds for our school cadets to shoot .303 rifles on the school shooting range. Happy days …