So apparently its "Joule-Thomson", not "ThomPson" with the P, but since William Thomson has been dead for over 100 years, I'm gonna keep spelling his name with a "P" cause he can't call me out.
I wish I could put memes in my comments because I want to post a meme of a guy with a SUPER HUGE BRAIN and an arrow pointing at him with the word YOU at the other end ... YOU = BIG BRAINS!! :D
I work in this field with this exact (and I mean exact) same system, but on the 100MW compressor scale. People say the P very often. If you want to be cool, just call it JT valve all the time.
Having worked with refrigeration for some twenty years I love this. You are the single most radical mad scientist in this field bar none. Your understanding of the cooling processes and the mechanical and practical equipment design should be taught in schools and we would all be better off. The description of efficiency relating to economy in a few sentences are coming out as an aside but sum up how you make a business case. I love what you do and how you share it. Mad respect!!
Fwiw this is probably the most info-dense, engaging series I've ever found outside of Applied Science. I'm normally a mechatronics guy and yet I'm having a _really_ hard time resisting the urge to build one of these myself despite having no need for LN2 and knowing nothing other than what I've learned from you. Love it, keep it up! 🍻
I can "see a need" for mechatronics inasmuch as making interference fitting parts go together without beating On the other hand, if you follow Cutting Edge Engineering, you'll know that a 50 litre dewar of LN2 costs about 20-30c/litre and lasts around 4 months if unused (dewars run from $300 s/h to $1500 new) For the price and the faff reduction in mechanical workshops, I'm surprised more engine/transmission guys don't use them
Suggestion: add a sight glass plumbed at the correct level in parallel with the oil separator so you can keep an eye on the oil level. Also, why not use an adjustable needle valve for your expansion valve instead of swapping in cap tubes? (Modern refrigeration systems use EXVs which are often needle valve controlled by a stepper motor.)
@@zyeborm Well, it depends on the materials used and what is expected to be present passing through the valve. Generally refrigerant loops are expected to be very clean, and since we know the temps involved, one can engineer a proper EXV. Most of the ones I've seen don't use any seals or other materials that need to remain flexible. Most are sealed in an hermetic enclosure, and only pass the magnetic fields from the stepper coils though to the rotor/valve assembly. These are used all over the place now and commonly seen in mini-split heat pumps. Tesla uses 6 of them in it's heat-pump system installed in all cars since 2020. Since they are plentiful, that means you can salvage one pretty easily and cheaply for experimentation.
I'm absolutely loving seeing all the ideas and progress you're making... I tried to build a JT liquifier years ago, might I suggest building a small vacuum chamber out of an old lpg tank, I built a large one from a car lpg tank, but your heat exchanger might fit in a regular sized one. Coat the inside of the tank in mylar or flexible mirror to reduce radiation losses, you can then braze the heat exchanger to a decently thick steel sheet for the lid, some soft rubber will work nicely as a seal. I used an adjustable needle valve on the cold tip instead of capillary, you could even put a handle through the side of the vacuum tank so you can adjust the needle valve while the whole system is running in order to increase/ decrease your ratio / remove blockages.... Keep up the awesome work!!
Problem with vacuum chamber that effect of insulation starts after 1/ 100 000 of air pressure so you must have extremely good vacuum, usually 1 millionth of air pressure. "It states that compared to normal temperature and pressure, and with a 1 cm gap, you need the pressure to be below 0.3 Pa to reduce the thermal conductivity of air by a factor of 10. Normal pressure is 101,325 Pa, so that’s a pressure reduction by a factor of about 300,000 just to get ten times better insulation than air."
@@markhivin8670 Oh wow, I had no idea!, I figured it probably wouldn't be proportional to air pressure, but didn't realise the ratio was so high... Thanks for that, I was planning on using a vacuum for some future projects, don't think I'll worry about it any more!
At this point, I do not even remember what the main goal of this entire endeavor... All I know is that I am buckled in for this cool ride. Such an epic adventure.
liquid n2 production iirc. probably gonna spent more money on power than buying a n2 tank once a month for the rest of his life if he uses this system XD
Very interesting , Great work ! , I have been a Ref. and HVAC tech. 41 years and did not know this system ; To make things easier for yourself , All brazing should be done with Nitrogen flowing through the pipes , Preventing oxidation inside the copper , And carefully preventing any brazing material from entering the piping ,
Usually I watch videos in 1.5-1.8x speed bc of my attention span and information absorption speed, your videos make me rewatch to fully comprehend the density of information is rediculous and I love that your videos provide more content than the length of them for me when it’s the opposite for most just found my new favorite TH-cam channel
Really looking forwards to seeing how those improvements work out. Even if you reach LN2 I think it would be interesting to see you keep trying to improve the efficiency and exploring the different variables.
A few things: 1- scroll compressors will pump more oil than reciprocating compressors 2- all compressors will pump oil when running unloaded 3- oils for refrigerant blends have an affinity for moisture, use mineral oil, 150 sus or less 4- co-axial heat exchangers just don't work well (trust me, I know), consider using plate chillers, they are cheap. The oil separator malfunction is very unfortunate. I'd be pissed. Keep it up, I'm enjoying this....
1. This is rotary compressor not scroll. 2. No compressor pumps oil when unloaded. Oil comes out slowly as vapours when compressor is loaded and it's hot. 3. He is using mineral oil. 4. Plate heat exchangers don't work as recuperative heat exchanger because you need temperature gradient for this cryocooler to work.
@@vivekkumarsingh4226 1- okay fine. 2- All compressors "pump oil", I did not say it was Liquid oil. 3- That green oil does not look like any mineral oil I ever saw, unless it was very contaminated. 4- A heat exchanger causes the gradient to occur, regardless of the type, I know from firsthand experience that a co-axial heat exhanger, especially of the home made variety, just does not woerk as well as a plate chiller.
No one has ever used plate heat exchanger for joule Thomson cryocooler. It just dosent work. I have read hundreds of paper on this topic. For this cryocooler to work you need to keep the cold end and the hot end of the heat exchanger as far as possible. This is impossible with plate heat exchanger as its a solid metal body where cold and hot end are very close.
@@kc5gym coaxial HX might not work as well as plate Hx for general purpose application like water chiller but it cannot be replaced by any type of heat exchanger in this cryocooler
This is really cool! By the way, you can usually make gauge screens look clear again with some grease smeared on them. If you want a more permanent solution clearcoat works very well or a thin/runny clear epoxy can work.
I think this is an amazing series. i study process engineering and always see these diagrams in theory, but i never thought it was possible to perform such experiments at a scale that isn't industrial. it's inspriring to see your mechanical problem solving skills and understanding of the prinicples combined in these videos. Good luck on your further projects, ill be here to see them
Thanks for explaining how they did this in the 19th century, I find those old compressors fascinating. The Liquid Air car experiment and the whole Paris pneumatic system are such interesting feats of innovation even if it was horribly inefficient. Would a TXV valve help your endeavors? Also when are you going to start playing around with ammonia :P
Wondering when we will start seeing college textbooks written by you, as your ability to explain and document with graphs and drawings is stellar!!! Love this series.
Thanks Hyperspace pirate for taking the time and effort to do this project and share it! I randomly hit your channel and idk if I'm ever going to need or ever use this wealth of knowledge you are sharing but its fascinating to watch!
Bro. I just wanted to make a diy a/c for my garage, but now I know how to make ethylene as well as acetaldehyde and what a joule-Thomson coefficient is since I didn’t listen in college. Also a ton of other information I’ll never use but is still super interesting. Thank you. I’ll never get this diy a/c done with all of these other interesting videos you’ve got. You are my new source of adhd procrastination. ETA: thank you for adding the precaution about grounding yourself. This is something I see people make the mistake of all the time. Even something as simple as using a CO2 fire extinguisher, while not as dangerous as methane, can build up quite a large static charge and give a decent shock. I see people holding lines discharging various gases and I cringe every time.
I've made a quick and useful exchanger once by putting my coils into a plastic bag then putting it into a 5 gallon bucket then filling it with closed cell expanding foam. Once it expands and cures you can pull it out of the bucket, if you spray the bag with non-stick spray like the kind used for baking you can even salvage the plastic bag. It seem like it would be much quicker and easier then snaking 30' of foam tubing over the coils as well.
I saw a TH-cam video about using liquid air as energy storage. Your experiment gives me all the details I need to know how difficult it would be to duplicate such a system and how to troubleshoot the problems I might run into I'd have to watch it three or four times though. Your explanations are very thorough. Thank you so much for posting all this. So fascinating!
I am a process engineering intern working at an oil refinery. One of my projects concerns one of the refinery’s Cryo units. These units use cryogenic temperatures to separate heavier hydrocarbons from H2, C1, and C2s. While these units also use the JT effect, they also extract work from the gas to lower the temperature further. The inlet gas is first compressed in two stages, then runs though turbines that drive the compressors. Probably not doable in the home garage but pretty cool nonetheless.
The compressor running hot is likely due to the fact that they are designed to run with a high flow of high density refrigerant on the outlet, which carries away the heat to the condenser coil. When running as a gas compressor, the mass flow on the output often isn't enough to carry the heat away. Maybe a water bath would help, the compressor oil can transfer some of the heat to the shell.
For putting copper tubes through tubes, blow some rope through the outer tube with compressed air, then pull both inner tubes through at the same time with it ;)
Love this series. Thank you for bring us on your journey towards building something that can condense Nitrogen in a home shop. I am thinking of building a Vacuum Cold Trap, but I need to solve the whole "-50C" issue for the inner chamber, but I really don't want to have to order Ln or Dry Ice and Acetone every time I use it. In a lab setting, We've found these three methods for insulation work well: 1. Conduction - Suspend that b**ch so its not touching anything that can pull heat 2. Convection - Pull a vacuum around that b**ch so no liquids can flow past it stealing heat
This is amazing, nothing else like it on youtube. Cant wait for the next video. Thanks for all your hard work and sharing of diy scientific experiementation.
I love your stuff! I watch every new episode almost immediately after release! I was thinking of achieving liquid nitrogen using a scuba tank filled to 3,300 psi and put in a freezer to cool it down as far as the freezer can achieve (maybe -15C) and then run the cold compressed gas through a Joule-Thompson coil in a thermos similar to your setup. The difference that I'm thinking of doing is using a little turbine taken from a cooling turbine (airplane parts) to help extract as much energy as possible. I'm thinking I can avoid using bearings near the turbine by putting the turbine on a shaft that is a couple inches long to avoid freezing up a bearing. and maybe I would utilize that spikey copper radiator heat sink stuff to absorb the cool gases that are leaving the system. I love the idea of using a mixture of gasses to achieve better joule-thompson coefficients! lots of creative brilliant ideas you have that make me think!
Exelente trabalho experimental! Em breve trabalharei em um experimento parecido aqui no Brasil. Quando eu tiver alguma ideia interessante, compartilho no canal.
!!> To straighten tubing, or wire... stretch it out, clamp one end in a vise, grasp the other end in a drill chuck. Pull the tubing tight, and spin the drill slowly until the tube is straight. Experiment with shorter pieces till you get the hang of it. Twisting the tubing will work harden it somewhat, but dead straight tubing is a joy to work with.
To get rid of the haze from the wet acetone splashing onto your gauge cluster, simply buff it out with some anhydrous ethanol and cerium oxide glass/plastic polish. [remember to remove them from the holder first, because the ethanol will dissolve the PLA and make the problem worse!] Also: once you have polished the face plates, be sure to place them facing upward on a slow spinning drive and rinse the polish off with more pure, anhydrous ethanol, BEFORE they begin to dry on their own, or else it will all have been a waste of time. Once you have spin-dried the lenses, slip a little simethicone onto them, or polish on some carnauba wax to ensure that any micro-pitting is filled equally to reduce ocular distortion.
6:08 hahahhhaa, i love how he's like "refrigerants are better than air for the porpoises of refrigeration!" ... who would've thought! Florida-man! ... all in all, pretty awesome videos :D i love how it makes seemingly industrial and complex business look approachable for common people.
This was awesome. I haven't historically had a lot of interest in science and physics. I just built stuff from wood and you don't need much even when building mid sized structures.
It's nice that, among all this complicated equipment, the actual part that creates cryogenic temperature, is a bit of pipe you squeezed with some pliers.
I love how DENSE with information your videos are. Makes them very re-watchable :) Once you have your system perfected I’m super hoping to be able to copy your work. I don’t NEED liquid nitrogen, but I WANT liquid nitrogen!
To make copper tubing perfectly straight, use a cable winch betwen two trees and a pair of vice grips at either end, stretch the tubing just slightly enough to yield it and when you release the tension it will be dead straight. :D Things you learn working in a lab.
Im calling in late for work to watch this . Got to come up with a new excuse . 😁 BTW That Ingersoll Rand is a 15T4 looks like. I have a few i never rebuilt. One is a 15T4 rated at 6500PSI and the other 10T4 i think its set up for 1000PSI . 25HP and 15HP. your right at that pressure there's no room for a screw up. good luck bro were all rooting for yah. Cheers from McMurdo station.
@17:44 as a commercial electrician who installs wires in conduit for a living quick tip. If you have pull two or more things into a into a tube pull them both at once. If you try to do them one at a time they are likely to twist around each other and make your life much harder.
Industrial systems e.g. air separation units (ASUs) use a cold box with perlite fill for insulation. They also use expander turbines for energy recovery. You should consider using a needle valve to set your restriction, it will allow you to tune the system. There's another channel who has managed to do this for liquifying N2.
Loving this series! 😎 Not loving the wait for the next installment! 😅 Thanx for taking the time to document your experiments and setup, is like 2 full time jobs here! 🤓
So apparently its "Joule-Thomson", not "ThomPson" with the P, but since William Thomson has been dead for over 100 years, I'm gonna keep spelling his name with a "P" cause he can't call me out.
Tintin had a couple of bros named Thomson and Thompson.
I wish I could put memes in my comments because I want to post a meme of a guy with a SUPER HUGE BRAIN and an arrow pointing at him with the word YOU at the other end ...
YOU = BIG BRAINS!!
:D
I work in this field with this exact (and I mean exact) same system, but on the 100MW compressor scale. People say the P very often. If you want to be cool, just call it JT valve all the time.
imma just call it the Joule Tommy effect
There's also the fact that it sounded like you were saying "dual Thompson"
This is easily my favourite series on youtube. The only time I drop everything to watch something
Same
Same. I wish i could give multiple likes
Same. Shame this dude doesn’t get more attention
@@TheGreyLineMatters I know, I probably watch most of them that are about topics I'm interested in. I just have a strange love for cryocoolers
@@TheGreyLineMattersweird.
Having worked with refrigeration for some twenty years I love this. You are the single most radical mad scientist in this field bar none. Your understanding of the cooling processes and the mechanical and practical equipment design should be taught in schools and we would all be better off. The description of efficiency relating to economy in a few sentences are coming out as an aside but sum up how you make a business case.
I love what you do and how you share it. Mad respect!!
I get so excited whenever I see an upload from you! This whole cryocooler series has been fascinating from the getgo.
Right!?
Indeed! i rarely get this feeling from youtubers but this is a pretty good series.
Same! Wish he got more attention
WORLD. OF. GOOOBBSSSS
Love the R&D in this series, and learning a ton about hobby cryogenics!
"I installed this tap in my natural gas line..." love it
Fwiw this is probably the most info-dense, engaging series I've ever found outside of Applied Science. I'm normally a mechatronics guy and yet I'm having a _really_ hard time resisting the urge to build one of these myself despite having no need for LN2 and knowing nothing other than what I've learned from you. Love it, keep it up! 🍻
Huygens Optics if you want info density and palatability of content
I can "see a need" for mechatronics inasmuch as making interference fitting parts go together without beating
On the other hand, if you follow Cutting Edge Engineering, you'll know that a 50 litre dewar of LN2 costs about 20-30c/litre and lasts around 4 months if unused (dewars run from $300 s/h to $1500 new)
For the price and the faff reduction in mechanical workshops, I'm surprised more engine/transmission guys don't use them
Suggestion: add a sight glass plumbed at the correct level in parallel with the oil separator so you can keep an eye on the oil level. Also, why not use an adjustable needle valve for your expansion valve instead of swapping in cap tubes? (Modern refrigeration systems use EXVs which are often needle valve controlled by a stepper motor.)
Could be needle valve at cryo temps is hard. Cryo is a different world to regular cold stuff.
I second the electronic needle valve idea.
@@zyeborm Well, it depends on the materials used and what is expected to be present passing through the valve. Generally refrigerant loops are expected to be very clean, and since we know the temps involved, one can engineer a proper EXV. Most of the ones I've seen don't use any seals or other materials that need to remain flexible. Most are sealed in an hermetic enclosure, and only pass the magnetic fields from the stepper coils though to the rotor/valve assembly. These are used all over the place now and commonly seen in mini-split heat pumps. Tesla uses 6 of them in it's heat-pump system installed in all cars since 2020. Since they are plentiful, that means you can salvage one pretty easily and cheaply for experimentation.
And... looks like he listened.
@@2pist Yup, and they work! Nice!
I'm absolutely loving seeing all the ideas and progress you're making... I tried to build a JT liquifier years ago, might I suggest building a small vacuum chamber out of an old lpg tank, I built a large one from a car lpg tank, but your heat exchanger might fit in a regular sized one. Coat the inside of the tank in mylar or flexible mirror to reduce radiation losses, you can then braze the heat exchanger to a decently thick steel sheet for the lid, some soft rubber will work nicely as a seal. I used an adjustable needle valve on the cold tip instead of capillary, you could even put a handle through the side of the vacuum tank so you can adjust the needle valve while the whole system is running in order to increase/ decrease your ratio / remove blockages.... Keep up the awesome work!!
Problem with vacuum chamber that effect of insulation starts after 1/ 100 000 of air pressure so you must have extremely good vacuum, usually 1 millionth of air pressure.
"It states that compared to normal temperature and pressure, and with a 1 cm gap, you need the pressure to be below 0.3 Pa to reduce the thermal conductivity of air by a factor of 10. Normal pressure is 101,325 Pa, so that’s a pressure reduction by a factor of about 300,000 just to get ten times better insulation than air."
Cody tried but it was very far from a true dewar...
@@markhivin8670 Oh wow, I had no idea!, I figured it probably wouldn't be proportional to air pressure, but didn't realise the ratio was so high... Thanks for that, I was planning on using a vacuum for some future projects, don't think I'll worry about it any more!
You know, office workers could benefit from watching these because you don’t even realize that you’re watching a PowerPoint…
At this point, I do not even remember what the main goal of this entire endeavor... All I know is that I am buckled in for this cool ride. Such an epic adventure.
I believe the goal was reaching below absolute zero.
liquid n2 production iirc. probably gonna spent more money on power than buying a n2 tank once a month for the rest of his life if he uses this system XD
Science isn't about *why!* It's about *why not?*
Very interesting , Great work ! , I have been a Ref. and HVAC tech. 41 years and did not know this system ; To make things easier for yourself , All brazing should be done with Nitrogen flowing through the pipes , Preventing oxidation inside the copper , And carefully preventing any brazing material from entering the piping ,
The editing on these videos is top notch! Funny and so clearly explained!
I’ve been averaging between 40 and 50 hours of TH-cam a week for the last 2 years. This is the first time I will be clicking the notification bell.
Usually I watch videos in 1.5-1.8x speed bc of my attention span and information absorption speed, your videos make me rewatch to fully comprehend the density of information is rediculous and I love that your videos provide more content than the length of them for me when it’s the opposite for most just found my new favorite TH-cam channel
Thia series is amazing. Im so excited for your eventual success!
Really looking forwards to seeing how those improvements work out. Even if you reach LN2 I think it would be interesting to see you keep trying to improve the efficiency and exploring the different variables.
A few things:
1- scroll compressors will pump more oil than reciprocating compressors
2- all compressors will pump oil when running unloaded
3- oils for refrigerant blends have an affinity for moisture, use mineral oil, 150 sus or less
4- co-axial heat exchangers just don't work well (trust me, I know), consider using plate chillers, they are cheap.
The oil separator malfunction is very unfortunate. I'd be pissed.
Keep it up, I'm enjoying this....
1. This is rotary compressor not scroll.
2. No compressor pumps oil when unloaded. Oil comes out slowly as vapours when compressor is loaded and it's hot.
3. He is using mineral oil.
4. Plate heat exchangers don't work as recuperative heat exchanger because you need temperature gradient for this cryocooler to work.
You need temperature gradient otherwise this won't work. Unfortunately you can't get temperature gradient using plate hx
@@vivekkumarsingh4226
1- okay fine.
2- All compressors "pump oil", I did not say it was Liquid oil.
3- That green oil does not look like any mineral oil I ever saw, unless it was very contaminated.
4- A heat exchanger causes the gradient to occur, regardless of the type, I know from firsthand experience that a co-axial heat exhanger, especially of the home made variety, just does not woerk as well as a plate chiller.
No one has ever used plate heat exchanger for joule Thomson cryocooler. It just dosent work. I have read hundreds of paper on this topic. For this cryocooler to work you need to keep the cold end and the hot end of the heat exchanger as far as possible. This is impossible with plate heat exchanger as its a solid metal body where cold and hot end are very close.
@@kc5gym coaxial HX might not work as well as plate Hx for general purpose application like water chiller but it cannot be replaced by any type of heat exchanger in this cryocooler
This is really cool! By the way, you can usually make gauge screens look clear again with some grease smeared on them. If you want a more permanent solution clearcoat works very well or a thin/runny clear epoxy can work.
Happy to see MRJT cryocooler for the first time on youtube
I think this is an amazing series. i study process engineering and always see these diagrams in theory, but i never thought it was possible to perform such experiments at a scale that isn't industrial. it's inspriring to see your mechanical problem solving skills and understanding of the prinicples combined in these videos. Good luck on your further projects, ill be here to see them
Thanks for explaining how they did this in the 19th century, I find those old compressors fascinating. The Liquid Air car experiment and the whole Paris pneumatic system are such interesting feats of innovation even if it was horribly inefficient. Would a TXV valve help your endeavors? Also when are you going to start playing around with ammonia :P
TXV valve only works for refrigerant it's designed to work for.
Mmmmm the spicy R717
Wondering when we will start seeing college textbooks written by you, as your ability to explain and document with graphs and drawings is stellar!!! Love this series.
Thanks Hyperspace pirate for taking the time and effort to do this project and share it!
I randomly hit your channel and idk if I'm ever going to need or ever use this wealth of knowledge you are sharing but its fascinating to watch!
I've been hyped to watch every video that's been coming out in this series. Learning the ins and outs of a diy cryocooler is pretty awesome.
as a HVAC Tech and now becoming an mech engineer, i pull my hair out watching your vids lol Shoutout from St. Pete, FL btw
These videos are so *cool*
I see what you did there, hue.
@@TracyNorrell you solved the cold case
Chilling, one might say
Love your sense of humor! And your dedication to finishing what you start! Cheers
Your sstc series is best on TH-cam, i love it. Please make a series on HFSSTC
Your patience on this build is legend.
Finally a video about making a refrigerator that isn’t an ice cooler or peltier.
Applied Science made one from rubber bands.
Bro. I just wanted to make a diy a/c for my garage, but now I know how to make ethylene as well as acetaldehyde and what a joule-Thomson coefficient is since I didn’t listen in college. Also a ton of other information I’ll never use but is still super interesting. Thank you. I’ll never get this diy a/c done with all of these other interesting videos you’ve got. You are my new source of adhd procrastination.
ETA: thank you for adding the precaution about grounding yourself. This is something I see people make the mistake of all the time. Even something as simple as using a CO2 fire extinguisher, while not as dangerous as methane, can build up quite a large static charge and give a decent shock. I see people holding lines discharging various gases and I cringe every time.
This is the most interesting thing on UT to me, thanks man!
My great great uncle was in the ICE delivering business, cool ya.
This man's animations are on point
I've made a quick and useful exchanger once by putting my coils into a plastic bag then putting it into a 5 gallon bucket then filling it with closed cell expanding foam. Once it expands and cures you can pull it out of the bucket, if you spray the bag with non-stick spray like the kind used for baking you can even salvage the plastic bag.
It seem like it would be much quicker and easier then snaking 30' of foam tubing over the coils as well.
Bro I need part 2, you got me hooked on the science and series, don't leave us hanging :)
I had no idea I was missing something so cool until you came along.
Thanks for these complex home experiment. I don't have the equipment to do this so I get to do it through you.
I saw a TH-cam video about using liquid air as energy storage. Your experiment gives me all the details I need to know how difficult it would be to duplicate such a system and how to troubleshoot the problems I might run into I'd have to watch it three or four times though. Your explanations are very thorough. Thank you so much for posting all this. So fascinating!
I am a process engineering intern working at an oil refinery. One of my projects concerns one of the refinery’s Cryo units. These units use cryogenic temperatures to separate heavier hydrocarbons from H2, C1, and C2s. While these units also use the JT effect, they also extract work from the gas to lower the temperature further. The inlet gas is first compressed in two stages, then runs though turbines that drive the compressors. Probably not doable in the home garage but pretty cool nonetheless.
The compressor running hot is likely due to the fact that they are designed to run with a high flow of high density refrigerant on the outlet, which carries away the heat to the condenser coil.
When running as a gas compressor, the mass flow on the output often isn't enough to carry the heat away.
Maybe a water bath would help, the compressor oil can transfer some of the heat to the shell.
It might have had something to do with it not having oil in it too.
For putting copper tubes through tubes, blow some rope through the outer tube with compressed air, then pull both inner tubes through at the same time with it ;)
Love this series. Thank you for bring us on your journey towards building something that can condense Nitrogen in a home shop. I am thinking of building a Vacuum Cold Trap, but I need to solve the whole "-50C" issue for the inner chamber, but I really don't want to have to order Ln or Dry Ice and Acetone every time I use it.
In a lab setting, We've found these three methods for insulation work well:
1. Conduction - Suspend that b**ch so its not touching anything that can pull heat
2. Convection - Pull a vacuum around that b**ch so no liquids can flow past it stealing heat
I think the best solution is to make a mini 2stage cascade cooler for this.
Great job bro! Waiting for future episode
a real engineer and scientist.. keep it up bro
This is amazing, nothing else like it on youtube. Cant wait for the next video. Thanks for all your hard work and sharing of diy scientific experiementation.
One of my favorite TH-cam series
I've always wanted to make a cyro cooler. Now I know I'm FAR to dumb to do so. GREAT vids BTW.
Very well done sir. I have a very basic understanding with HVAC but I was able to understand your video and enjoyed it. looking forward to pt2
I have been on the edge of my seat this whole series. Love your work ❤
I've been waiting so long for this video
I really don't understand anything about heat exchanges but really like the video and edits, been watching all the series til now
Used one of these wi He in conjunction with a two stage GM cryocooler to get down to 1.8K. Lots of fun to see it explained like this.
Found your channel in my recommended, happy it did, lots of good content!
i cant wait until you get this working, so fun to watch, we will all be cheering
Hyped every time I see your uploads. I cant wait to see what happens next!
I never thought I would enjoy so much seeing someone playing with old air conditioners! Can't wait for the next video!
I found this out, too, when i was making a chiller for my beer making hobby. I too found my self in the awesome rabbit hole of chilling.
This keeps getting more fascinating on each video.
This is absolutely amazing! Thank you for posting this!
Awaiting anxiously for the next episode! This is amazing work!
I am always glad when I see your videos pop up
I love your stuff! I watch every new episode almost immediately after release! I was thinking of achieving liquid nitrogen using a scuba tank filled to 3,300 psi and put in a freezer to cool it down as far as the freezer can achieve (maybe -15C) and then run the cold compressed gas through a Joule-Thompson coil in a thermos similar to your setup. The difference that I'm thinking of doing is using a little turbine taken from a cooling turbine (airplane parts) to help extract as much energy as possible. I'm thinking I can avoid using bearings near the turbine by putting the turbine on a shaft that is a couple inches long to avoid freezing up a bearing. and maybe I would utilize that spikey copper radiator heat sink stuff to absorb the cool gases that are leaving the system. I love the idea of using a mixture of gasses to achieve better joule-thompson coefficients! lots of creative brilliant ideas you have that make me think!
Exelente trabalho experimental! Em breve trabalharei em um experimento parecido aqui no Brasil. Quando eu tiver alguma ideia interessante, compartilho no canal.
Wow, what an epic voyage of discovery! Really great work at quantifying all the issues and planning for the next attack on the problems.
!!> To straighten tubing, or wire... stretch it out, clamp one end in a vise, grasp the other end in a drill chuck.
Pull the tubing tight, and spin the drill slowly until the tube is straight. Experiment with shorter pieces till you get the hang of it.
Twisting the tubing will work harden it somewhat, but dead straight tubing is a joy to work with.
Little by little legitimizing your setup - kudos!
This guy is making thermodynamics interesting again
To get rid of the haze from the wet acetone splashing onto your gauge cluster, simply buff it out with some anhydrous ethanol and cerium oxide glass/plastic polish.
[remember to remove them from the holder first, because the ethanol will dissolve the PLA and make the problem worse!]
Also: once you have polished the face plates, be sure to place them facing upward on a slow spinning drive and rinse the polish off with more pure, anhydrous ethanol, BEFORE they begin to dry on their own, or else it will all have been a waste of time.
Once you have spin-dried the lenses, slip a little simethicone onto them, or polish on some carnauba wax to ensure that any micro-pitting is filled equally to reduce ocular distortion.
Why polish with anhydrous ethanol and not simply polishing paste?
This is very cool. Your videos give me chills
Making such an ambitious project step by step is really the best content 😊.Keep it up buddy!
Props bro this is really advanced content. I was good in my first thermo exam in engeneering and I still understand like 85% of it.
What books does he read to learn all of this? It’s incredible how fast he can put together these videos with so much progress in between each video
Great update, stinks about the separator, compressor and gauges. I can't wait to see more!
Love this series! Great content and editing!
your determinism is an inspiration!
Love this series! Great content and editing!. Love this series! Great content and editing!.
Great video to watch before work.
6:08 hahahhhaa, i love how he's like "refrigerants are better than air for the porpoises of refrigeration!" ... who would've thought! Florida-man! ... all in all, pretty awesome videos :D i love how it makes seemingly industrial and complex business look approachable for common people.
This was awesome. I haven't historically had a lot of interest in science and physics. I just built stuff from wood and you don't need much even when building mid sized structures.
When this is done I want to build. Due to the massive amount of info you would need to post a build guide of sorts so others can follow
I don't really understand everything but i love this serie !
It's nice that, among all this complicated equipment, the actual part that creates cryogenic temperature, is a bit of pipe you squeezed with some pliers.
You’re literally the mad scientist down the road
Channel continues to grow, keep on keeping on.
I push thumbs up before i even starting to look at the video, really good and informative work!
Why am I so interested in this? This is stupid, but I can't stop watching, and I want more.
Incredibly exciting. I can't wait for the next video.
I've watched a few of these. They're fascinating! You've earned a sub.
Thank you! This is very helpful information for my projects and the information has been very hard to find
I love how DENSE with information your videos are. Makes them very re-watchable :)
Once you have your system perfected I’m super hoping to be able to copy your work. I don’t NEED liquid nitrogen, but I WANT liquid nitrogen!
To make copper tubing perfectly straight, use a cable winch betwen two trees and a pair of vice grips at either end, stretch the tubing just slightly enough to yield it and when you release the tension it will be dead straight.
:D Things you learn working in a lab.
Can't wait to see you liquify air! Well done so far!
That oil separator having a printed date of 1996 on it surprised me when I first saw it, apparently it did end up being defective too
Obsessed with the animations on these videos
bro keep it up, its really some interesting stuff
Im calling in late for work to watch this . Got to come up with a new excuse . 😁 BTW That Ingersoll Rand is a 15T4 looks like. I have a few i never rebuilt. One is a 15T4 rated at 6500PSI and the other 10T4 i think its set up for 1000PSI . 25HP and 15HP. your right at that pressure there's no room for a screw up. good luck bro were all rooting for yah. Cheers from McMurdo station.
if you're really in Antarctica post a selfie with a penguin
“Theory alone is stupid.” Preach!!
@17:44 as a commercial electrician who installs wires in conduit for a living quick tip. If you have pull two or more things into a into a tube pull them both at once. If you try to do them one at a time they are likely to twist around each other and make your life much harder.
Industrial systems e.g. air separation units (ASUs) use a cold box with perlite fill for insulation. They also use expander turbines for energy recovery.
You should consider using a needle valve to set your restriction, it will allow you to tune the system. There's another channel who has managed to do this for liquifying N2.
Loving this series! 😎
Not loving the wait for the next installment! 😅
Thanx for taking the time to document your experiments and setup, is like 2 full time jobs here! 🤓