Step 5: Drill!

Ok, out come the Forstner attachments!** (drill bits are fine, Forstner are best... and really great for all sorts of stuff...)

take it slow, and in steps, and cut all the way through the MIDDLE of both pieces. you're using 7/8" drill bits, as, the PVC will fit snugly in the holes you drill. Nothing fancy here, just drill straight through.

Now, pull out the ruler** and sharpie** (for you chaps in the UK, and people in the rest of the world, a sharpie is a permanent marker... sharpie brand is the best though. Correct me if I'm mistaken, but for some reason it's mainly a US brand and other countries don't seem to know of them, how sad.) and draw two tangents to the hole you just cut. opposing tangents are best... (see below) this is where we'll be drilling for your air lines. (only one for the Archimedes screw type)

** available at Amazon.com!
<p>Unquestionably one of the most confusing <em>Instructables</em> ever written. See earlier questions. This is begging for an exploded parts diagram.</p>
<p>What diameter is the pvc tube? I'm a little confused, you mentioned several different sizes. It says 24&quot; long, but what size?</p>
<p> TROMPE (air compressor with no moving parts) </p><p>+ VORTEX TUBE (heating and cooling with no moving parts)</p><p>= CLEAN ENERGY.</p><p>https://www.youtube.com/watch?v=SScpJMsCm9c</p>
what does it do?
<strong>i<em>ntroThe Hilsch vortex tube<strong></strong></em></strong><br/>The hilsch vortex tube, cools and heats air at the SAME time with no moving parts, and NO electricity. cool huh? it's quite simple, and only a matter of getting the dimensions right! Not to mention EXTREME temperatures!<em></em><br/>
But... don't you need an air compressor? that has moving parts right?
<p>There is an air compressor that uses no moving parts! It is called a TRUMPE. <br>https://www.youtube.com/watch?v=SScpJMsCm9c</p>
so its not productive its just............a..science project
Actually, it is productive, if you build it correctly, you can instantly freeze small samples. there are PLENTY of uses, just think what you could use cold air for!
ooooo ican think of two........ no offense, but its not to exciting
well, can't expect everyone to think it's exciting... thanks for commenting though.
<p>I very greatly appreciate your work to publicize this amazing invention by Ranque and Hilsch. The key to the greatest inventions is simplicity, not complexity necessarily. This device piqued my interest when I first found out about it on the Internet (another great invention) back in 1997 approx. I believe it is a device with very great potential still waiting to be tapped. There have been comments to the effect that &quot;compressed air&quot; technology is inefficient. This is simply wrong, I think. Compressed air is an excellent means of storing energy. Standard methods of compressing air can be improved and made more energy efficient by one obvious method. Cadillac Aera &quot;concept car&quot; winner 2010, would use compressed air at 10,000 psi, and would get 1000 mile range (estimated). This is not &quot;low tech&quot; or &quot;old tech&quot; that has no current value; quite the opposite. It is so far in the future that people to this day have a very hard time grasping the fact that any vehicle can be powered solely by compressed air, running thru piston drive configuration or preferably rotary Wankel air motors (in-wheel hubs configuration, as used in the Aera concept car). EngineAir Australia Pty. Ltd. has made some good progress with this technology, but has been ignored by the investors needed for further commercialization. The Aera would be nearly silent in operation because rotary Wankel air motors do not &quot;clatter&quot; as do the piston configurations. So the technology is all available, but only needs to be systematized and put into commercial production (not as luxury Cadillacs, but as everyday, utilitarian vehicles, to include VTOL vertical takeoff and landing aircraft for everyday transportation, thus obsoleting roads, bridges and tunnels for personal transportation and everyday family errands etc.). Anyway thanks again for your excellent work on this Instructable and thanx also to Instructables.com, a great site that really gets the imagination going.</p>
<p>I forgot to mention that new air pressure tanks are available, made with &quot;carbon fiber composite&quot; and/or other high strength, lightweight materials. These amazing new pressure tanks make entirely new transportation systems feasible, whereas in the past, high pressure tanks made of steel were far too heavy to be practical for these applications. In the USA, a company called Quantum Technologies (QTWW stock symbol on Nasdaq) is or was making these high pressure carbon fiber composite pressure tanks, but may have been focusing on using them for natural gas or possibly for hydrogen storage, rather than for air pressure tanks; QTWW may also be involved in military applications that have limited commercial availability (this irritates me because it keeps happening to some of our best new tech). I am not sure what companies if any, are producing this type of tank for pressurized air specifically, or whether the fuel tanks can be used for air (most likely they can be used for any gas, although hydrogen can usually seep through almost anything). Anyway this is a bit off topic because the RanqueHilsch device can be used to assist in air pressurization, but that's not the typical use intended for it.</p>
it works awesome as a coolling system on grinders
<p>Also, just think what you could use hot air for. (And think what can be done with the difference between hot and cold, hint hint.) Yes, it is productive. Thinking it is not productive is what has kept it in the science museum all of these years. Henry Ford stated something to the effect that he &quot;invented nothing,&quot; he just put together ideas and devices that had taken decades of peoples lives to develop over thousands of years. Thank you for the positive attitude here. We need to encourage invention, as you are doing.</p>
<p>&quot;Just&quot; a science project?? Please... Don't you think science can be &quot;productive&quot;?</p>
Would it be possible to run this on something more continues, eg a fan blowing into the vortex chamber. It would be significantly weaker i assume but if you loop the hot air output back into the input it would increase/decrease the output temperatures respectively?
<p>'Atta boy!</p>
<p>Would you mind sharing your feelings about a few things regarding vortex tubes? Firstly, what are the important dimensions you mention regarding effective vortex tubes? Secondly, do vortex tubes scale up well? If one were wanting to make a large vortex tube would they require air compressed to higher pressure, or a larger volumetric flow of compressed air? Thank you!</p>
Thank you for sharing this. I used to use one of these in an automotive repair shop, it was much smaller and completely made of plastic. I cannot remember the manufacturer. I am now back into automotive repair and wish to use one of these again. In your plans you give a list of parts needed but in your schematic there are differences. The main difference is the length of pipe for the project. In your parts list it is 5&quot; but in the schematic it is 24&quot;. Please tell me the length and why it needs to be this length. Thank you, Chuck
For non-relativistic speeds, inertia is not dependent on velocity, only on mass. <br>. <br>I doubt the air is reaching any appreciable percent of the speed of light. <br>. <br>Perhaps the intention was to reference 'momentum' instead of 'inertia'?
I have built several vortex tubes of different materials and sizes. There are a fun and interesting thing to build. The most successful one I made is here and is a bit easier to build:<br>http://ottobelden.blogspot.com/2010/12/another-home-made-ranque-hilsch-vortex.html<br>I have instructions of how I built it along with a video and some thermal images I took with a FLIR camera showing the temperature gradients. The details of the other tubes I built are also there on my blog:<br>http://ottobelden.blogspot.com/p/various-projects.html<br>Scroll down to the Vortex Tube links. I'm more than happy to help folks build these tubes. Leave a comment on my blog or email me!<br> - Otto Belden
i have a quick question <br><br>on step 6 do you use the drill bit to &quot;route&quot; the holes for your air line and could you just clamp the 2 pieces of acrylic together and drill into the seam where they meet thus &quot;routing&quot; the air line?<br><br>thanks <br>fidgety2
in my humble opinion the cooling is caused by the increase in velocity of the molecules without heating them - they will need to absorb heat to retain the velocity- and that will cool the inner slower molecules that don't need to because they are not moving as fast -- in essence i am proposing another law of physics one that if a molecule is accelerated that it absorbs heat to stay at its new velocity -- if such a law exists please excuse my ignorance as i am no physicist ... kind regards Mark <br>
Can this be done with copper pipe to avoid any possible flammability that might be encountered with pvc?
Interesting article in Vortex and on making one.<br> You explanation of a Vortex only separates the hot molecules from the cold ones I cannot disprove, but I have read of other theories like this one......<br> <br> <em>&quot;While one airstream moves up the tube and the other down it, both rotate in the same direction at the same angular velocity. That is, a particle in the inner stream completes one rotation in the same amount of time as a particle in the outer stream. However, because of the principle of conservation of angular momentum, the rotational speed of the smaller vortex might be expected to increase. (The conservation principle is demonstrated by spinning skaters who can slow or speed up their spin by extending or drawing in their arms.) But in the vortex tube, the speed of the inner vortex remains the same. Angular momentum has been lost from the inner vortex. The energy that is lost shows up as heat in the outer vortex. Thus the outer vortex becomes warm, and the inner vortex is cooled.&quot;</em><br> <br> I bought a Vortex Tube in the 1980's and used it to cool carburetor choke bimetal coils to test them and the choke linkage. Also was handy to cool temperature sensors to test their accuracy instead of waiting overnight or removal and install in freezer etc. Here is a video I did on my old Blue-Point Vortex. <a href="http://www.machine-history.com/Vortex%20Tube">http://www.machine-history.com/Vortex%20Tube</a>
I am really determined to build one of these (I've wanted one since I saw it in a McMaster and Carr mag. but didn't feel like forking over 200 bucks for one) but I have a question about this step.<br /> <br /> What exactly am I supposed to be dremeling? After I drill the holes and use the paddle-bit, what piece am I supposed to dremel and what am I trying to remove/smooth/etc.<br /> <br /> Please reply if you get a chance, I would be very thankful!<br /> <br /> And Great instructable btw, so far this is the only informational tutorial I've seen for making a vortex tube!<br />
I think what he means is that you don't use the paddle bit to dig down and make the indentation for the washer. You use the dremel for that. Most paddle bits have 3 points, one at the center and two on each end.<br> | __ __ |<br> |/ &nbsp;&nbsp; \/ &nbsp;&nbsp; \|<br> Normally, when you drill into wood with them, the center point digs in first, then the two outer points dig in (and the circle appears), then the flat part digs in &amp; starts tearing out wood. Here, the purpose of the paddle bit is just to dig the perimeter of the circle. You're only using those two outer points of the bit. At least I hope that's what he means, since I'm starting the project tonight.
That's the way I understand it as well. Although I do have a cheap and cheezy backup index of spade bits that don't have the scribe edges. They're not good for much though.
I have had on several occasions, the need for a 'stepped' bore similar to the above picture. One of the requirements was that the two bore sizes be concentric.<br><br>I find it easiest to start first with the large shallow bore so I still have material in the hole with the centering pilot from the big bit to target the smaller bit with.
Do you drill into the wall of the PVC pipe? Doesn't the washer block the flow of air? It looks like it's right in front ot the air tubes. Are both halves of the MDF (er. acrylic) the same?
Some about this site.<a href="http://www.erkim.com.tr/Vorteks_Tupleri.html" rel="nofollow">www.erkim.com.tr/Vorteks_Tupleri.html</a>... I made one vortex tube.İts&nbsp; good and cheapest working on cnc <span class="long_text" id="result_box"><span title="">lathe</span></span> machine .<br />
I have a question about the Archamedes Design<br /> <br /> In the picture, there is a weirdly shaped white space in the center of the design, is this supposed to be cut out? Left intact? or is the white space just unnecissary?<br /> <br /> From the look of it, the Archamedes design looks like the Opposing jets but with only 1 tube (that is double the size). Other then the number of tubes leading into it, it looks pretty much the same. If you've had a chance to compare the 2, I would be really appreciative if you could share your findings, and also if you could explain the white space in the Archamedes design..<br /> <br /> Thankyou!<br /> And great instructable! Very informative and very well put together<br />
&nbsp;The vortex tube is such a nice concept, in the lab we have an Exair Vortex tube (exair.com) which produces about 5 liter/s air at -30 degrees C.<br /> <br /> It's so noisy that without mufflers, I suspect it goes above 120 decibels!<br />
&quot;popular science monthly&quot; magazine, may 1947, p. 144 had the article &quot;homemade maxwell's demon blows hot and cold&quot; in which plans are given out to make a Hilsch vortex tube. Required tools are just a drill press.<br/><br/>The plan specifies an input of 75 to 100 PSI<br/>Output is claimed as &quot;hot end too hot to touch, and cold end gathered frost.&quot;<br/>A photo is shown with 2 thermometers reading 68 and 110 degrees respectively. the nature of the tube is that it is adjusted to maximize either heat or cold, you can't have both at the same time.<br/><br/>the entire tube is 12 inches long and made from 9/32&quot; brass tubing.<br/><br/>Unfortunately, this issue is missing from Google book search beta, although all the other issues are there. <br/><a rel="nofollow" href="http://books.google.com/books?atm_aiy=1940&ie=ISO-8859-1&id=9CkDAAAAMBAJ&q=hilsch#search_anchor">http://books.google.com/books?atm_aiy=1940&amp;ie=ISO-8859-1&amp;id=9CkDAAAAMBAJ&amp;q=hilsch#search_anchor</a><br/><br/>The article was reprinted in &quot;mammoth home workshop manual&quot; 1950, by popular science publishing. A great book, chock full of the sort of home handycrafts common in the &quot;mens magazines&quot; of the day. those WWII era magazines like pop. sci, pop. mechanics, mechanix illus. kinda seem to me like Make magazine's eccentric uncle.<br/>
<a href="http://www.popsci.com/archive-viewer?id=KiYDAAAAMBAJ&amp;pg=144&amp;query=Hilsch+vortex+tube" rel="nofollow">www.popsci.com/archive-viewer</a><br /> <br /> Pop sci just released their entire archive online (searchable by keyword).&nbsp; Found that appropriately named article.<br />
<p>It depends on the settings. For maximum heating and or cooling temperature you can adjust the flow proportions. But for maximum heating and cooling btu's, (different than temperature) adjust for 50/50 flow, and indeed you will have heating and cooling at the same time.<br /> <br /> The higher your input temperature the lower your cold temperature and the higher your hot temperature.<br /> <br /> &nbsp;</p>
From my understanding, the air that enters the Vortex Tube passes through some kind of generating device and spins at extremely high rpm's towards one end of the tube. Then an inner vortex of air spins towards the other end and exhausts as cold air. There is a real good flash animation at <a href="http://www.stream-tek.com/products/vortextubes/vortex-tube-works.php" rel="nofollow">http://www.stream-tek.com/products/vortextubes/vortex-tube-works.php</a>; gives a good visual on the inner workings of the Vortex Tube.<br /> <br /> --&nbsp;JP<br />
First go down to your local stream and build a "trompe" so as to supply your compressed air. Then apply the heated and chilled air from your Hilsch vortex tube to your favorite Sterling engine.
Here's a question fer ya.... You said in step 11: attach it to the air line (nearly close the ball valve) and slowly open and close the valve until the hot side gets VERY hot. Are you referring to the ball valve as the one you need to open and close, or is it on the air inlet from the compressor?? The two references to a valve has me confused a bit.
I think he means the one on the end of the pipe.
would you need a "compressor", after all, you have no need to jam the air in permanently, could you just use a impeller or centrifugal fan? . After all, centrifugal fans can pump out a lot larger volume of air and are quieter too, they may not have the pressure capabilities of a compressor, but it may not need to.
I like this instructable. You might mention what volume and pressure you need to get 'acceptable' results. Even using your MDF, it would be OK for a while if you first take some wood glue, thin it about 50-50 with water, then use it to 'paint' the surface. That will fill in lots of the pores, make it smoother, and make it last longer in the presence of water. Do this even if you want to paint it. The glue makes a reasonable 'primer' for the MDF.
I may be missing the stated use of this thing, but does it have any practical applications, or, is this a demonstration project for teaching science?
I have seen commercial ones used for cooling instrumentation in an industrial area where they don't want to put more mechanical equipment. Like inside otherwise explosive areas in buildings or areas in labs where the kind of work done is prone to fires or explosives. The good thing is big industrial plants often have large central air compressors. I remember the plant my dad worked in while I was growing up had 4 800HP compressors powering the 400PSI air in the plant near FtWorth. (I could be wrong about the number and size, it was man years ago, but it was huge).
They are occasionally used in machining as an alternate to coolant. There's a lot less mess, and some metals machine better without a liquid coolant present. YMMV
Just think what you would use a hot air gun for, or a can of freeze spray. It's not exactly taxing to come up with uses!
in theory could this be used to lower the air coming into a cold air intake on a car? - how would one hook up the compresssed air if this doesnt use any electicity? would it need a compressed air feed at all in this scenario? - or would the cold in coming in be enough to work this? many thanks - there are cryo systems being sold that use co2 for the air feed. im keen to use this system though.
In theory, it could be used to lower the temperature, BUT, unless your car has a high pressure line, I doubt you'd experience anything. The TUBE itself doesn't use any electricity, and you could just as easily (or more easily, but not so cheaply) use a bottle of compressed air instead of a compressor, but, one keeps going and lets you fiddle. The other's pressure drops (probably rapidly unless it's pretty large) and then you've got to recharge it.
hummers have a built in air compressor......

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