DIY Air Liquefier Build- Liquid Nitrogen Generator

[@Spirit-mg6wq]

You rattled that off like you were making a coffee. Legend.

[@Richard-zc1cj]

He speaks of like he's on meth

[@everetthorn7742]

One of most amazing things that I've seen that classify as real science or engineering in a while. I'm a fan instantly :)

[@Exotic_Chem_Lab]

My friend has designed a 3 stage cascade refrigeration system that liquefies methane and nitrogen. Propane in first stage, (-42°C) Ethylene in second stage(-103°C) Methane in third stage(-162°C) He condenses nitrogen under pressure of about 10bar

[@en2oh]

I don't think you're going to liquefy nitrogen with an ethylene second state......

[@Alex-um4fe]

Is that design still available?

[@TheBackyardScientist]

I like your presentation short and to The point

[@ittehgeps]

hi

[@Justin-dv7ul]

awesome channel

[@potatocat42]

Yes I agree

[@MrAndrew990]

liquid helium is like 8 degrees hotter than absolute zero. I would love to be an apprentice with you i'm always amazed by your creativity and projects. Your videos continue to blow my mind. love keep it up.

[@joeylee6094]

damn, I love the way you speak! Weirdly soothing and easy to comprehend. Keep doing what you do, sir. Respect from the other side of the world.

[@SolarSeeker45]

This is extremely helpful, I was wanting to buy one of these but I didn't know what parts I needed to expect it to work.

[@RimstarOrg]

A lot of stuff in a short time, but it's all very cool stuff! Liquefying helium would be amazing. :)

[@BenNBuilds]

I guess its more of an overview. I'm most likely going to do a Hampson-Linde setup to make liquid helium, 4k cryocoolers are very hard to find cheap. Thanks!

[@muntee33]

Woa dood. Our brains do not work as quick as yours. We need more time between words to take the information in. Much more lol. Amazing work👍 Massively impressive.

[@SatisfyingWhirlpools]

Wouldn’t it get colder inside if the outside was insulated? Doesn’t a metal surface allow a lot of heat in?

[@Stythysx]

Awesome video, my favorite part is where you're doing fairly complicated work and you're calling part of cooler "things" XD

[@steelwind345]

I played your video at 0.50 the speed. It made you sound kinda stoned but I was able to understand it all better.

[@calabrais]

This needs to have more views

[@anonimous336]

mann it looks like you can build an atomic bomb.

[@jayv7404]

This channel is just awesome!!! Also, when will the other vid be up about that compressor?? I am desperately awaiting it....

[@neutronspdr]

Liked, right to the point.

[@ClownWhisper]

I used to work for a large genomics proteomics company. when i think of all of the perfectly good gear i tossed in dumpsters because of sarbanes oxley regulations I want to heave. Now that I have a home lab im glad that I took so many things home with me. but i trashed a perfectly good chiller when i was moving that I would kill for now. I need to figure out to make one that will chill enough for ammonia concentration.

[@Abdega]

What all repairs to the compressors did you have to do? Adsorber and O-ring replacement?

[@Alex-um4fe]

How much energy did it take to make a gallon of liquid air?

[@jerrybear3081]

seams pretty straight forward

[@orionmyers9546]

what would happen if you liquidized hydrogen and stripped off the electrons with high voltage? would you get liquid protons or neutrons?

[@giovannifazi1523]

Hi, have you an accessible document with more accurate information for purchasing all the instruments needed? Thanks

[@austinneathery]

Holy moley!...how long did all this take you? I'm very impressed with all that you did. Keep the videos coming!

[@BenNBuilds]

Thanks! The build only took about a week of here and there work as the stuff came in the mail. I was on ebay for a couple months looking for the cryocooler so I was itching to get it going when I finally found a cheap one

[@skyhawk551]

i like the information density but this was too quick

[@ReturnofRage]

Nice set up!

[@ללאכותרת-ט8ל]

Hi, Ben! Nice generator. Have you plans to build Hampson-Linde air liquefaction set up?

[@Iminpain-g3f]

I love your channel

[@glockenspielsdesk]

dont those helium tanks have oxygen and other stuff in them?

[@hinz1]

Hi Ben, where did you get those self sealing helium connectors to refill the compressor from? I got a cryopump with compressor myself and it needs refilling too. It looks like you've used balloon grade helium. Does that work? Because everywhere there's written that only ultra pure 99.99+ helium should be used to refill the compressor or the Gifford McMahon cold head will get frozen with contaminations.

[@BenNBuilds]

Chuck Norris The connectors came with the cryopump+ compressor I got. In the past I have bought separate lines for other cryocoolers, they are just called helium flex lines on ebay. They seem to be fairly universal but are quite expensive. I got away with using balloon helium because it only needed a tiny bit more. I don't think it was the best idea but it runs fine and still works. If you can get purer helium definitely do that. Especially if you spent a lot on the cold head.

[@naaffax6700]

amazing work! thanks for sharing your knowledge

[@ricksanchez3106]

Very nice and thank you for sharing.

[@wyattvanorden7709]

Why did you have to pump the chamber down? Doesn't this make it harder to make liquid gasses because lowering the pressure increases the boiling point or is it necessary to get the cryopump to work?

[@Spirit532]

+Wyatt Van Orden It'll work at room temperature and normal pressure, but all it will condense is liquid air. With a vacuum chamber you can get your own mixture of gases, or one specific gas.

[@overbuiltautomotive1299]

darn it need a rig like this

[@derrickcheng349]

hi, I have a question, can the air still breathable when the liquid air turns back to gas?

[@BenNBuilds]

+derrick cheng It would be in strange quantities, because the gasses all have pretty different liquefaction temperatures (likely more argon and co2) but probably fine. If there was a small presence of a "warmer" gas like chlorine, this process would likely amplify the percentage of that gas, which could be bad but i don't think it would be super harmful with normal air

[@TheCuttingtorch]

bowl and weird thing ftw

[@cookrileyw]

Thanks for the information very helpful

[@carl95125]

Ben, Are you using a gifford-mcmahon type cryocooler to "make" liquid air? Does the cryo head have any moving parts...? You were great on "Mythbusters:The search"...

[@BenNBuilds]

Yea, its just a cryopump, basically just condensing a gas on a "heatsink" on the cold finger and collecting it. yes there are a few valves inside the cold head

[@carl95125]

Thx for your reply. What is the make and model of the cryopump?

[@BenNBuilds]

APD- 8S30 If I remember correctly

[@jaybanchero]

Very cool! BenNBuilds; I'm really curious to know if you're able to build a system that could liquefy Oxygen quickly... like 80 ounces per minute? Also, if you're able to build such a system how much power would it use? Great work my friend! Very informative! Best, j.

[@BenNBuilds]

That would be industrially big and expensive, I would go with a hampson linde cycle liquefaction. this paper describes the thermodynamics link.springer.com/content/pdf/10.1007%2Fs10909-016-1733-3.pdf Basically you want half the output of this system, it weighs 75,000 lbs. If you have a few hundred k laying around I'd call them for a quote. www.igskorea.co.kr/backup/igs-usa/html/brochures/E8_Nitrogen%20Liquefier%20Series_E8.pdf

[@jhyland87]

Is your cold head an Al60 or PT60?

[@jamesandonian7829]

so the vacuum pump is used to get rid of all air which contains many gasses? then refilling the chamber with pure nitrogen and using a pump to pressurize it to like 200bar or so? I want to do a research paper on this (college student)

[@BenNBuilds]

pretty much, but I only back fill it with a quarter atmosphere or so as its less thermally conductive. The chamber stays below atmospheric pressure the whole time.

[@FisforFluorine]

Hey Ben, where were you able to find the connector for that cryopump? I found a cheap used cryopump, but I haven't been able to find that corresponding 4 pin power connector. Do you have any insight on this? Thanks!

[@BenNBuilds]

+FisforFluorine You either get lucky and it comes with it, or you need to do a few hours of research to find the pinouts and just make a connector. I've had to do it before, its not awful but it is hard to find info on this stuff

[@bilbo_gamers6417]

Where do you buy a compressor and vacuum pump like that, by the way?

[@AlexanderZapataIndividual]

This vidio is awesome cuz you are awesom.

[@marianoaldogaston]

it will be great if you could speak a little slower for the people that speak English as a second language. that way it will be easier to understand you.

[@halamkajohn]

I have a davey 5000 psi compressor hooked up to a 16 hp bs. How can I make lox? I found stuff in the 1st stage valve which limits it to 1200 psi.

[@lm5050]

impressive

[@johnjacoblyonsmanalad4194]

hey how much does the total system cost including everything,and what alternative parts can you give to me while keeping the price point very low im a researcher!

[@BenNBuilds]

ummm... less than 300$

[@cookrileyw]

How dose the helium compressor work to get the cold finger at cryogenic temperatures because all I can find on the Internet is that you need one to create an atmosphere/ gas cryofreezer

[@BenNBuilds]

Riley Cook It expands and contracts a closed loop of helium. The gas expands in the cold finger and contracts at the top, where it is piped away to the compressor and out through the water cooler(effectively). Its basic thermodynamics, look into Joule Thompson, the linde cycle, expanding gas principle, all pretty much the same principle(sortof). When you expand a gas the molecules seperate and loose energy (Heat) its a bit more complicated than that but its VERY useful. The potential energy turns into kinetic energy, and there are losses due to unbalanced molecular charges.

[@cookrileyw]

This was very helpful, thank you for responding I'm subscribing to your channel now.

[@TheDaniel366Cobra]

Not what I expected to find under "DIY"... Cryocoolers are way too expensive where I live -__- Nice build though, thumbs up for the project =)

[@Exotic_Chem_Lab]

If ur really interested in building a nitrogen liquefier at home the u need 3 AC or 3 fridge compressor and some refrigerant for making liquid nitrogen at home. My friend build one few years ago its still working and produces 6 liters of liquid nitrogen per hour and uses 2KW power per hour.

[@1989Alternative]

What would be required to further drop the temperature into the liquid helium range? I am trying to use MgB2 superconductors.

[@BenNBuilds]

A 4k cryocooler. Modifying these is really difficult, I have been working on a big joule thomson helium liquefier for a while now and its rather expensive. It uses that giant 4,500psi 12cfm compressor and over 300lbs of 304 stainless tube, I "might" finish it by the end of the summer. Just shop around for a 4k cryocooler, they are super rare but it would be a ton easier than anything else

[@AllYourFriendsThink]

why did you put a vacuum pump here...?

[@TrollDude3]

Where'd you buy all of the components?

[@orionmyers9546]

you make it look easy

[@BenNBuilds]

it kinda is

[@orionmyers9546]

I doubt that

[@orionmyers9546]

what would happen if you liquefied hydrogen and than striped off the electrons with high voltage? would you get liquid protons or neutrons?

[@orionmyers9546]

what would happen if you liquidized hydrogen and stripped off the electrons with high voltage? would you get liquid protons or neutrons?

[@orionmyers9546]

what would happen if you liquidized hydrogen and stripped off the electrons with high voltage? would you get liquid protons or neutrons?

[@gmosphere]

you are is what I want to strive for

[@insanitycubed8832]

Sounds like Eminem got some competition.

[@collinshanks6344]

Does your helium compressor run off of 3 phase power?

[@BenNBuilds]

Surprisingly it was single phase 220V

[@collinshanks6344]

BenNBuilds Interesting. Thank you!

[@gatien3075]

Can I have an detaillled plan of this please ? ☺

[@landlockedviking]

wow! May I come and learn at your feet?

[@suprememuggy6149]

Im trying to make dis but the helium compressor confuses me what does it do does it turn helium to liquid or compress it

[@Exotic_Chem_Lab]

Supreme Muggy its a rotary compressor same as in air conditioner. It compresses helium to about 250psi so that it can flow in the system and perform cooling

[@jimmartin7899]

You seem to know sum things would you like to work on some advanced stuff? Here is just one design, Stirling cryogenic piston to turn air to liquid inside a tank with a bell siphon that fills a heat exchange radiator with a fan to draw air through radiator for air conditioning with the liquid air boil off returning to tank to form liquid air to complete the cycle. A closed system. I am looking for a motivated individual to help me with a few components using liquid air and super conductors. If you're interested?

[@jasonnewbon1803]

If you spoke any faster I wouldn't understand you .... Oh.. No that's right I didn't ....replay

[@nousername3004]

Please do a new build or atleast an update!

[@AL6kar]

It is NOT DIY. It is based on industrial cryocooler.

[@user-hh1dl6bl5u]

You could make rocket oxidizer with that. =)

[@swift10101]

Where the hell do you learn this stuff?

[@BenNBuilds]

+TheHuntHasStarted I petty much just learn as I go

[@KylesYTU]

+BenNBuilds can i have the plans please?

[@nejcdrobnic7899]

+BenNBuilds can I get the plans aswell

[@CombraStudios]

+Kman Meteor Why don't you try to figure it out by yourself?

[@WOLFNBEAST]

+Kman Meteor Someone correct me if I'm wrong, but I believe you take the helium compressor (the blue box) and hook the intake and out take to the cryopump (the big metal thing) the cryo pump has a closed chamber at the top which the helium compressor is attached to. the pump has a heat sink which exchanges with an open chamber bellow the top of the cryopump. essentially the helium compressor cools helium gas to cryo levels which is exchanged in a heat sink inside the cryopump. this cools whatever gas is in the lower chamber. the water chiller is to cool the helium compressor.

[@anythingthatmoves9609]

what's the hydrogen compressor for

[@BenNBuilds]

a liquid helium generator. that project is on hold

[@milathecat5454]

I mean, you could make liquid oxygen from liquid nitrogen and then combine it with burning alcohol at a 60/40 ratio and create a rocket,,,,, I guess,,,,... I made this because you said it's pretty useless

[@Ikeathetalkingbudgie]

Not. Did you go to MIT or something?

[@boxcarz]

*Warning: Safety.*

[@epianguiano7880]

Thats definitely do it yourself for the average joe. 😆

[@acorgiwithacrown467]

I hear making liquid oxygen is relatively terryfing.

[@Exotic_Chem_Lab]

corgidog no its not. Making cryogenic liquid is actually very interesting and fun also.

[@Exotic_Chem_Lab]

corgidog you can check my friend's video on making liquid methane at home. Just type how to make liquid methane at home in the search.

[@BenNBuilds]

I mean I think its pretty cool

[@vipinsubash041991]

Wow Coool But understood only liquid nitrogen.

[@thebuddha2026]

can you give me leads on generating my own liquid or compressed oxyegen... also i want to build a crucible for batching borosilicate glass...... there is very little information anywhere on diy so im doing it all myself :p but seems you know enough to do exactly what i want

[@SodiumInteresting]

Yeah liquid helium would be more than neat

[@UndergroundRap4eva]

Science :-)

[@bilbo_gamers6417]

2:46 How, exactly, would you liquefy hydrogen? I'm guessing black magic.

[@BenNBuilds]

It condenses at -421F

[@bilbo_gamers6417]

BenNBuilds How? You'd have to put it in a vacuum.

[@dtiydr]

No, why?

[@BenNBuilds]

just get a surface down to< -421F and it will condense if there's hydrogen gas there. It wouldn't work in a vacuum because there would be nothing to condense out. This cryocooler doesn't get that low, however

[@mdetvisser8692]

You talk Soooooooooooooooo fast!!!!!

[@bilbo_gamers6417]

He talks a little fast, but still good video.

[@noavailabeusernames5684]

I really need to see liquid chlorine...

[@BimotaMoon]

Ummm... can you liquefy a fart?

[@jasonlaijy]

Hoooooly shhhhiittt

[@carl95125]

The Siemens cooling cycle counterflow (regenerative) heat exchanger and expansion (steam) engine, that was first used in 1857 to make ice. I'm sure with some mods (a la Georges Claude in 1902), you could make liquid air in no time and it would no take 46 years make it either. kryolab.fysik.lu.se/dokument/e_techn.html

[@bhill777]

Holy shit bro slow down. I literally cannot understand you when you talk to fast

[@sockmonkey03vincent95]

You Gotta take it down a notch buddy. I could barely understand half of what you said in this whole video.

[@tysoncook5152]

Man he talks faaast. Eh, doesn't matter this is a pretty high quality vid.

[@thebuddha2026]

you sir are a beast i have so many plans i need to make please message me if youre intrested in helping me with information

[@kareemsalessi]

Please cut the crappy-background-music which prevents understanding context!!!

[@jaymeselliot8181]

+1

[@wvXvxvXvw]

Chill out, take a breath and calm down.

[@BenNBuilds]

ok.....ok....ooookkkkkkk

[@nuggetczsk]

Well, it's not exactly DIY

[@DmINx9]

Huh? I will make mine liquid nitrogen with peltier modules for less than 100$

[@jakegarrett8109]

Haha, lol! You don't know how Peltiers work then, haha! Let me know when you can't even hit -100c at basically 0 heat load (LN2 at atmospheric pressure is -196c when it boils). Physics bro, you're doomed!

[@ВадимБезруков-я4б]

Я так понял, у этого криостата дно - самое слабое место в его теплоизоляции?

[@BenNBuilds]

+Вадим Безруков Ну, потому что его все изолированы вакуумной изоляцией не является issuefor сам кулер . Изоляция проблема с моей системой сбора , однако, керамическая blaket я использовал имеет сумасшедший объем утечки , так что теперь , когда я использую его я согнуть до большой держатель Stainess , uches о так что есть около 10 дюймов из нержавеющей стали , что любой risidual тепла должны сделать это до конца.

[@Spirit532]

+Вадим Безруков Это так называемый "cold finger" - в нём газ расширяется, и таким образом охлаждается. Это как радиатор внутри камеры морозильника.

[@Em.P14]

geez dude you got to chill down, a bit slower pls XD

[@devitgamer1m630]

I am using caption😢

[@raydoesaudiostuff]

You and I should colabe

[@TheCerberusInferno]

You speak too fast ..

[@devitgamer1m630]

Yup

[@bobtucker4738]

Do you really have to talk fast?

[@joshyoung1440]

Yeah, this was TOTALLY helpful for DIY, lemme go get my fcking extra broken helium compressor... no not that one, the other one... GOSH I JUST HAVE SO MANY OF THESE LYING AROUND WHICH IS WHY I'M DOING DIY lmao I'm sorry, cool vid and all bro, but not sure how it's supposed to be useful, especially with its current title.

[@maxey83112]

Talk slower!!

[@Teachemyoung16]

Check out what we did with our homemade liquid nitrogen! It's closer to the end of our vlog. Thanks. kzbin.info/www/bejne/mJzLdJisjdqmaqs