Micro Tesla Turbine Power Test
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- Опубликовано: 12 фев 2016
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Doing some power testing on the micro Tesla turbine that I made in the previous video. The motor that I used as generator, is probably not the most suitable for this purpose, a more efficient one could have given much better results. I'm thinking that a faulhaber brushless DC motor would be perfect for this. The goal is to produce the power that is being currently produced at 60psi to be produced at 30psi or even lower. Also any suggestions on how to improve the Tesla turbine itself, are very welcomed! Special thanks to Tesla Tech who helped me with these upgrades.
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Hey!! I have some good news about these DT-2234C+ laser tachometers... you might want to write this down and make a "cheat sheet" to put on the back of it. They don't really "give up" at higher speeds than 100,000 RPM... you actually have 150,000 RPM capability! (and possibly a little more)
(For anyone wondering how I determined this, I used a pulse / signal generator to "blink" a super-bright red LED, shone it into the tachometer lens, and tested the readout accuracy with a frequency counter, multiplying the pulse frequency (in Hz - based on seconds) by 60 to get RPM (minute base).
At/above 100,000 RPM the first digit will show what seems like a "nonsense" character... but in reality the tachometer still works fine, it's just that this character needs the following interpretation chart (replace the 'odd' first digit as shown below):
"A" = 10 (100,000 to 109,999 RPM)
"L" = 11 (110,000 to 119,999 RPM)
"u" = 12 (120,000 to 129,999 RPM)
"P" = 13 (130,000 to 139,999 RPM)
"d" = 14 (140,000 to 149,999 RPM)
"n" = 15 (150,000 to 159,999 RPM)
Above 159,999 RPM it gets a little unpredictable... because... at 160,000 RPM the first digit goes blank (" ") at which point it starts counting from "0" again... so that 100 = 160,100; 1568 = 161,568; 7001 = 167,001; 9999 = 169,999 RPM
After 169,999 RPM the first digit goes to an "8", and the "BATT" indicator comes on. However, it stays this way for everything upwards of there (170k, 180k, etc)... so I'm calling my last "predictable" highest RPM reading to be "n9999" - which is 159,999 RPM.
ALSO... I wonder if a better match for a motor/generator would be an in-runner, not an out-runner. Out-runners are optimized for more torque and lower RPM, inrunners are higher RPM, lower torque - which is what your turbine is. Maybe something with a Power rating of 100W or more would help. I think maybe your motor has too thin wire gauge to pull a heavy load like that 10W lamp on one phase.
Using just one Phase of the motor/generator will result in very low efficiency. Rectify the 3 phases (6 diodes), then use a light a bulb. Adding a capacitor would help a little, but 3-phase power is already very smooth, so for this kind of experiment it won't help much.
ALSO, ALSO... With all of the different sizes of these that you've made, it would be rather interesting to see a sequential turbine array... each with a generator... to see what the combined power would be.
Thank you for taking the time to make such an informative comment. Have a nice day!
*blinks*
Oh snap
so in other words, the turbine was running between 108775 and 118775 rpm?
U have really big brain
"A" in hexadecimal is 10, so it looks like the tach can correctly display 100,000 rpm
impressive analysis, but later on it displays an L which is not an hexadecimal digit, invalidating that theory.
+Miguel Not necessarily. What hexadecimal character comes after "A"? And if you tried to display that character on a 7-segment display, what number would it look identical to? So perhaps "L" is used as a substitute for "B" because "B" would be confused with "8". Why did they choose "L"? Perhaps because it sounds like the number it represents, "eleven"?
probably, but normally a B is displayed with a b so we don't make this confusion.
Miguel it is obsessed with all caps!
Jason Pepas hi, checked the manual, it says it reads up to 99,999 only
Use the tachometer on the large gear and get and multiply by 3 to get an estimate of the rpm on the turbine.
+William Delaire Agreed! If the ratio is exactly 3:1, it would be exact rpm, not an estimate. Except it would be under load, of course.
+Pat Sullivan I would prefer under load circumstances anyways , can anyone here give me a reason not to do a 1:3 ratio though? seems like torque isn't an issue here.
+Ceal Losaria The setup that you see on the video is the best configuration that could be made out of the stuff that I had laying around. I did a test with direct coupling and the performace was lower than the geared configuration. Also the turbine was strugling to get the generator to speed.
+johnnyq90 I would assume that the turbine has a optimal pressure yes? is it 30 psi? and if so I'm really interested at how different liquids would interact with it. like steam yada yada
+johnnyq90 I really gotta say I'm transfixed at how well it sounds I wish I could show you how scalar it is audacity . I don't understand why changing the ratio made it struggle to get to speed but I would like to know how to maximize the potential of a motor like that, the concept it awesome and seems more effective than even those pelton wheels in the dentist drills. if you were to hook a set of these turbines up in series what happens?
my dentist will love it
Leandro Lopes Pereira hahahhahahha nice loool
EPIC COMMENT!
what's an dentist??
What's a RUclips?
Dentist will cut head off with this thing
Great job Johnny, keep up the good work and off course all new development.
Always a pleasure to watch your channel
Tesla was asked out of all his inventions, which was his favorite.
He said," my turbine".
Good going ,I've watched your work for years ,and you are advancing in leaps and bounds !!
Beautiful sound, no hard vibrations, fantastic job.
YES ! Power testing ! Thank you.
Dude you are a Genius...
you are a Master to build these parts .
Great Job , congratulations!!!!
sick fuarkin video! the music and layout was awesome.
Good to see always improving
If you're getting 9.5 watts how many watts of air are you putting through it? Just wondering what its efficiency is
Very Cool!
This is fantastic well done.
Btw when your tachometer reads A9066, it isn't giving up, it's displaying the rpm in hexadecimal. So it's at 109066 rpm
Thank you!!
that is one of the most beautiful things I've ever seen!
the sound is sooo awesome
I like what you are doing and encourage you to continue. You need to quantify the SCFM of compressed air that you are driving your turbine with. If you get 1 amp at 12 volts you are generating 12 watts of power. The SCFM and air pressure will define your input power. Track this info then as you make improvements to your turbine you can express those improvements in terms of increased efficiency. You are doing fantastic work !!
Wow awesome!
Really nice crafted tiny Tesla turbine...^^
Man…. I’m working on my 10 in Tesla turbine… but gott dang I couldn’t imagine having to be so accurate in such a a small space on all those holes that you’ve made. Well done. I will at you are the only one on the inter webs that I can find that’s using s tight of disc spacing. It’s sooo critical for these smaller Turbine.
Why don't generating some psi from 20 gallon water tank 10 meter high above to drive this micro-tesla-turbine to see how much electricity?
fantastic!
WoooooW mann!!! congratulations!!!! you´re the master of air machinery!!!! i can´t believe that a tiny generator could load almost 10 W of energy!!! amazing!!!!!!
This sounds amazing!
Please music name
Perfect :)
Very good job, congratulations.....
good job !
good job :)
Ahaha nice! Audio out behind the brushless motor! Best use of a pci bracket!
Why your subs are not in millions just why your content is so professional bro you deserve billions of subs
Very, very good.
Have you calculated the efficiencies for the tested cases? With the flow rate from the air gun that would be very intersting to calculate.. if you have the nozzle diameter an estimation for the airflow could be made at the given pressure.
Also how have you determined the relationship between disc diameter and gap width?
Interesting project!
will this fit in my honda?
KhemDawg MCM!
KhemDawg but this has no VTEC.
KhemDawg rice! rice! baby yeaaahhh ↘↘↙⬆⬇
Yes
Do you machine these components yourself on a lathe?
you should be using a 3 phase DC rectifier to get the full output from the motor.
yup. i hope he will do that. i bet he will get around 3-5w more from the generator if he will use all the phases.
+Ben Simms Should use all 3 phases (3 bulbs), but using a rectifier would only help if the AC voltage is 10x the diode forward voltage... otherwise too much Voltage will be lost in the rectifier. Using a schottky diode bridge would help a lot... so would knowing what Load impedance the motor he's using requires to get best Power output. If it's a motor rated for 7.2V operation, the load should allow the Voltage to be at least double that.
With a 3-phase bridge diode setup (and a large electrolytic capacitor as a DC filter), you can change the load resistance to do comparative tests for maximizing output DC Power. I found that allowing for 2-4 times the rated running voltage gives best output power when generating versus motoring.
Love this guys' builds though! I'd like to see a video showing alllllll of his projects gathered together!
the forward voltage in a rectifier couses no loses u just have to lower the impendance of your load to get more current on the lower voltage ;)
But the loses in the wire will increase :(
Sorry, but you are incorrect. Diode forward-bias voltage drop is a "loss", and is significant if the rectified voltage is not much higher than the diode drop. Every diode in a silicone bridge rectifier drops 0.7 up to 1.0V per diode, depending on the load impedance. In the video he showed about 3.5V AC, which would only result in maybe 2.0 to 2.5V DC at the load. Every diode has in its specification "Vf"which is the Forward Biased Voltage Drop. This Voltage is "lost" between the Source and the Load, and turns into heat as a result of Vf * Current.
Let's say you have a 3V power source, flowing through a Diode to a Load.
If you have 2 Amps flowing through the diode to the Load, and the diode has a Vf of 1.0V, then you have 2 Watts being lost in that diode.
i want to see the thermals of that thing running at 40psi.
you are my hero
exclente video, felicitaciones por esa turbina tesla... suscrito a tu canal 👏👏👍👌
saludos desde colombia
You are so smart!
great job, I hope you also make the Tesla Dynamo Electric machine a reality someday!!
great video thumbs up..can the generated output be more than power needed for pressure? or equal at 100% efficiency? what's the max efficiency u got so far?
You have great machining skills..
Wow that is impressive bro
AWESOME
That's impressive! 11 volts and almost a full amp...more than enough to be lethal.
Awesome
If you build this 10 times bigger, is the power generated proportional or exponential?
Robert Artenie I dont know, but the noise sure.
Do you think you could build two of them, so you could have one take the air pressure that builds up from the first one to double back on itself to feed?
You're damn good man, the stuff looks awesome! I was curious though, do you have any measurements on how much power you were putting in (via the compressor) vs how much you got out of it. How long could you the turbine before you didn't have enough air to adequately produce reasonable voltage to keep the light lite. As in, how long until the light would reach a level you'd consider to be too dim for acceptable use.
Esse cara e um GÊNIO !!!
com certeza!
it's amazingly well built. awesome work. I would attempt to replicate if I had that skill set and equipment.
+Jeff Austin Thank you!
+johnnyq90 oh k... now what does the turbines look like in your Pneumatic motor. hmm?!?... OR did you even billed that thing.
Excelente trabalho muito bom
Thank you
АБЗАЦ Я ПРОСТО ОХРЕНЕВАЮ ОТ ТАКИХ РАЗРАБОТОК В ДОМАШНИХ УСЛОВИЯ!!!!!! :))))))))
БОЛЬШОЕ СПАСИБО ЗА РЕАЛИЗАЦИЮ ТУРБО-ИДЕИ!!!!
Hello, What is air comsumption litter per second or some rate?
any idea if the outrunner stator coils started getting hot making the 9.4 watts? i'm looking to use one as an alternator but am concerned about heat buildup.
Nice
Have you thought of using a flywheel to store some of that rotational mass when the load on the generator changes. With the right weight flywheel you might be able to use pulses of air to keep the rpm up while pulling an electrical load. I'm impressed with your work.
Most of us had Mr.L
hey im just wondering if this could be run in reverse. im currently looking for a solution to a problem i have . i need to find a air compressor thats very small capable of pumping a tank that .25 liter and maintaining 1000 psi. is this your video?
That is very impressive! 10Watts at very reasonable pressures. Will it work on steam? e.g. survive the heat and moisture? Can a campfire steam generator be made to generate enough steam to produce those 10 watts?
+James Newton I guess it would, and much better than air.
+johnnyq90 Wouldn't that be a cool thing to demonstrate? People could make them for camping, survival, off grid power, etc...
+James Newton I agree, but the boiler needs a lot of development in order to be efficient and do some useful work.
+johnnyq90 I'm fascinated by the flash boiler in the Doble Steam cars. See Jay Leo's videos on the subject. I've been fortunate enough to be around a replica car which was being built by a guy in Oregon, and the boiler is NOT heavy at all. Doble put years of research into that boiler, and using it as a starting point would be wise. Kimmel is a good source for information:
www.kimmelsteam.com/
for example (not a Doble, but nice plans)
www.kimmelsteam.com/docs/Bolsover%20Water%20Tube%20Boiler%20Fig%20A-F%20and%20discriptions-web.pdf
+James Newton Thank you for your interest, I really appreciate it.
what are the applications of this kind of tesla turbine/motor? its a alternative rotor for tools that use pressured air, like pneumatic sanders?
Cool! How many blades inside the fan?
Fantástico, muito potente.
Hi, i would like to do something like this for a college project, do you have any sketches or blueprints that i may use? Would this work if i use steam from a boiler instead of air? Thanks
Hi what is so unique about tesla trubine ? is it effiecient ? can you calculate the efficiency ratio ? ( how much power did you use for air compressor to run generator up to 7W ?
+johnnyq90 There is only one word that I can think of that accurately describes the motor and it's function; and that's, "SUPERB". Thanks, I really enjoyed the video.
The sound of precision.
Neat device! I'd love to see air being "pulled" through it into a vacuum instead of "pushed" through by a compressor. A steam vacuum like the ones that can implode oil drums and industrial tanks would draw pretty massive force through the turbine as the pressure differential attempted to equalize itself... (in my mind at least.) Also, I'd like to make a fractal Tesla valvular conduit from a thermally conductive material and draw air through it in the same fashion to see if heat could be generated from the vortices generated within. Sadly, I have neither the technical expertise nor the equipment to do it myself. I'm saving up for the day when I do (:
Hey, I have query. Can this be used in reverse as a air compressor? does supplying 3.5 watts to the same motor make 30 psi at the turbine?
Could you explain more about the motors and electronic side please? I could make the turbine but I don't understand enough about the electronic side to make a generator.
damn maxed it out.
2,900kv motor as the generator? Is that a typo or is it really possible to have a 2,900kv motor that size ?
Second speed test went to "L3474" which equals 113474rpm and I think he backed off before max rpm. Critical torque velocity where vortices and turbulence threshold can be noted at around 50000rpm where there is a sudden increase in rotational acceleration. Epic demonstration.
Well done brother. Please keep up your excellent work. I love the very high rev's. What would happen if a larger one was made?
+Adam Allen I guess better torque, but I'm insisting to improve it on this scale so I could use it as a portable device like a tool for instance.
The rpms are crazy! Sounds like it ran good under 30psi
wow great
Tacho didn't give up bro. Your observation did.
s possible to skip the gears, making the end part as the generator itself?
Or what about a more significative gear ratio to increase speed?
1:35 when VTEC kicks in
Verry cool turbine. Excelent work.
One tip regarding the bldc as a generator:
You will get much more out of your motor if you use a 3 phase Rectifier to convert your three phase AC into DC. Can simply be built out of 6 diods.
Also you could use a motor with a lower kv Rating to get more voltage at lower rpm. I easily lit a 21W 12V Bulb hooked to a CF2822 Brushles via a 3 phase rectifier made from 6 diods. The motor was spun by a dremel working not even close to full power.
I'm thinking of using a Faulhaber brushless dc motor for this application. Much smoother and more efficient.
Actually I don't know much about Faulhaber other than they are expensive. But efficiency allways sounds good.
Anyways you should really think about trying the rectifier. Because if I'm right by connecting 2 phases you only use a third of the power that the motor could produce, so the Faulhaber will as well struggle to put out good power.
Hello, Can I ask you what camera you using to record your films on YT?
+BlackPowderGuy This is the first video that I'm using my new camera (Canon 100D). All my previous videos were shot using my cellphone (Sony Xperia ZL)
Thank you for your reply :)
Tesla was a great scientist 👍👍
Would low torque for more heavy duty applications be an issue with a Tesla Turbine? Thank you!
Where can you buy all of the stuff your using?
Is your turbine reversible ? Did you test it as a compressor ? I am curious about the maximum pressure it will reach if you drive it with an electric motor. You can for instance directly connect a pressure sensor at the output to measure the max pressure it can feed a close volume.
Lovely build. What air compressor are you using and how many watts does it use at 45PSI ? I think the turbine is around 98% efficient in it's original design.
1:50 this guy will get your cavities filled in for you
Would putting the discs in a spherical cage be beneficial?
Can you measure how much air is consuming per second?
any idea of what the flow rates were in any of these examples? I'm guessing the turbine is massively inefficient as Tesla turbines usually are, but it would be nice to have some quantitative idea.
IT'S OVER NINETY NINE THOUSAND, NINE HUNDRED AND NINETY NINE!
so whats the efficiency? I dont know how much power you spend to compress 60 psi
nice! : )
Thank you!
I'm still more interested in the output compression, being spun by an electric motor or a turbo-like design with compression spinning it up.
666 likes and 6 dislikes: Seems that someone is trying to contact us..
Gadget Lumic
Awesome videos. I'm sure it's been thought of already, but I think a practical use for one of your machines would be add a gear box and chuck to replace your lathe mounted Dremel.
I though of this already, but I don't think it would have enough power to do the job. It would be very cool for sure.