Very strong Nitinol Engine running on warm water and ice
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- Опубликовано: 31 мар 2016
- Dr. Johnson's Heat Engine
This is a demonstration of Dr. Johnson's Heat Engine, a Nitinol based engine that works at very low temperatures. I bought it from the company "Smart Wires" in the Czech Republic.
Transcript:
Welcome to a demonstration of Dr. Johnson's Heat Engine (an application of Nitinol, a shape memory metal)
Spring made from Nitinol
Shrinks back to its orginal shape when heated
two pulleys connected with different sized gears
two idler pulleys
warm water
How does it work ?
Spring expands in cold water = it draws with less force
Spring shrinks in warm water = it draws with more force
Pulley with small gear has mechanical advantage over pulley with big gear so it "wins".
I'm sure this would also work with cold beer on the left and hot coffee on the right side.
But the resulting mixture of both would be an environmental hazard worse than nuclear waste.
Did you hear this ? This was me, angry about the mess I have to clean up.
I have no idea, why the image has turned to green color.
One of the many secrets of this Samsung NX500 Camera that I m using.
Hmmm. There are ice cubes left over.
I shouldn't throw them away. It's unethical to throw away food...
Let's see if I have some Bourbon. That would make a good supper, wouldn't it?
I have no idea who this "Dr. Johnson" is, but I will drink this Bourbon to his health!
And I will drink another bourbon to your health, guys , who are watching this video.
For every one of you!
I mean one for every one of you.
So don't share this video if you don't want me to become an alcoholic! 
Наука
That is by far the most ridiculous heat engine i have ever seen, fantastic job.
Some are asking why this isn't more widely used. Answer: Nitinol has a cycle-life of about 1million, so even with constant refresh of cold and hot, the Nitinol will internally "wear-out" within several days of constant use.
no the oil companies used dark magic to make everyone forget about this
You can just re-super heat it and super freeze it again and it'll be good
Not true at all. Nitinol gets even stronger after milion revolutions. Watch the video from the 70's about it. ruclips.net/video/oKmYqUSDch8/видео.html
@@TheSign2020 Free energy is impossible. Don't be so gullible.
@@legendsolobea670 It was a joke.
You should dye the hot and cold liquids so you can track how fast they mix visually.
The mixing isn't important, it's the heat transfer that drives the engine
The mixing of the hot and cold causes a reduction in the thermal differential. This is the main reason the ice is melting so fast, and why is slows down so soon. It is very important.
Collin Reed
What I meant was that the mixing isn't what makes the engine run.
Errol Husaberg I fully understand that the mixing isn't the driving principle of a heat engine, it would just make for a good visual since the engine so profusely mixes the hot/cold reservoirs. It's just a visual way to track how much work is being done by the nitinol and how soon the liquid needs to be replaced.
Errol Husaberg
i would love to see someone use this same idea and make it practical
Very cool. When I was a kid I dreamed of ways to turn nitinol into compact motors. Couldn't work out how to do it. Your design is great.
me too...
i knew it was possible !!! thanks for making it, now use Peltier module and a solar cell
maybe coating the spring in some water repellant would prevent the water from grabbing onto the spring, so the two liquids wouldn't mix as fast, making the runtime last longer? or maybe adding a drop of soap to destroy the surface tension?
dmk also add several setups on two tanks and then add a small dynamo to produce a working prototype.. and then trial it using an electrical hot water service and a dynamo.. and a cold tank.. then have the dynamo charge battery banks and say goodbye to the power company.
Gary Stinten but it can only work for a few days before it “expires”
The coating may resist the springs ability to reshape.
Haha not needed, just lift up the wheel some more.
@@iriswoo8030 BS! Try it your damn self.
Experimenting and also taking care of environment. Good job.
Clever engine. I had not seen one of those before.
"It's unethical to throw away food" Totally hear you man!
Great video, hope them bourbons went down smooth :P
This is the sort of thing I like, nice and simple and has potential for work.
3.6 K views. Latheman's crazy machines promised to have a bourbon for each view.
This machine could have saved the whole world, but the inventor spent the rest of his life inebriated and no more progress was ever made.🤪
Great video. Thanks for sharing.
I like your sense of humor!
I would think there would be a real world applications here, say in geothermal in climates where it's cold. Iceland comes to mind.
Great video! Thanks.
Ha ha.
That is just absolutely stupendous.
I find the spring a non optimal source for the technical memory property being translated accurately. However, The pin of a gear shaft can have a geometric locking pattern that twisted the integral gear, with a small oriface for the water to move in, (account for surface tension so it can enter.) Describing the pin of the gear that we want mechanical energy to translate the gear for an output of that energy with minimal loss to the gear set between the exchange and movement of water between sides. The gear pin, would be twisted on one side going through tho the other side which would be housed in the warm water section. A tighter twist. As the gear changes in the water, The intermediate twist opens and orifacei which warm water enters forcing the gear to turn back, With each turn and interlocking geometry it would slowly turn the gear. However, to explain the geometry, more a mechanical pencil or pen wit ha push button top. If you examine them, you will see how interlocking geometry's are really helpful. Click once, it goes down and locked because it gets trapped in a place where it can't get back because of the one way shape. you push again it gets back because it goes to the top bypassing the interlocking part. Click, click.
I hope that explains what I am stating.
So a hollow pin, that as the other turns and clicks into place, it opens a challen to its hollow inside, the warm water rushes in, and spins it back. Clicks again. its closed. The cold water turns it again. ORificae opens... I think it would be slow... and the water in the oriface and hollow pin would need to escape easily, so when the other click open it then goes ota natural position of closed for the warm water to eh other side, but opens a valve like mid t, that drains the water that entered. This would accurate the process. Further more, then the mechancial energy owed have to then be able to have enough stored energy to pump the solution back into the warm area and heat it up also. Whilst the other side is cold. But moderating the properties of escat temrepratures needed. Room temperature. Also the size, ration and thrust of its memory are important. IT would be an interesting relation. to attempt optimize its potential energy. Most of that energy is stored in the actual metal. IT does have a half life, but not sure on the time..
It's a thought, been following this product for awhile....
Applications that I could see useful, are in cars that have variable environmental controls, with wire heating of windows, one could use the metal to alter the contours of the cars for optimized weather, or other useful things, or for winter ponds, verse summer ponds, a way in which the seasons auto mate a process of control, by utilizing the sun, and cold of the climate changes. As for a engine design, it could be an interesting pneumatic, or combination with copper plates and magnets, as a when the copper gets to hot, it could serve as a auto shut off. There are many interesting uses... .
Genius underrated engine!👍
imagine an airconditioning unit that almost powers itself based on the temp difference from inside and outside..
Yes, then think some minutes more and forget about it.
Unbelievably cool!
So cool!!!
so hot!
so full of kinetic energy
If I could thumbs up twice I would. Hilarious & awesome at the same time!
I cannot imagine that nitinol could shrink and expand sooo fast in cold and warm water,
I also don’t understand how that little motor keeps spinning no matter how am look at it, but it is pretty interesting stuff.
Thanks for the demonstration. It's a neat scientific 'toy'. It's also quite good at extracting water from the reservoirs at the same time as it moves the heat from one to the other! Odd that it starts by removing cold water, and ends with removing warm water. I wonder why? Shall have to look out for one of them, and improve it with a tray to stop the water from making a mess. The green 'white balance' adds a certain je ne sais quois to the video. ;-p
I'd say it's because the differential in temperature is bigger between this cold water than with the hot water.
Genius. Keep up the good stuff.
Informative. I like the video. Thank you.
I saw an article on something like this back in the 60's. Using salt to make the drive-band expand. Israel showed a concept drawing of a huge wheel using the Dead Sea for the salt side.
So how does this compare in efficiency to say a stirling engine?
It doesn't, it's more like a cool little experiment
It's very inefficient. The heating of the water takes a lot of energy and a lot is lost. Ice also takes a lot of energy to make.
It's blow my mind ! So cool ..
Very good idea!
I wonder if you could use this for a Desalinization plant? I mean use the ocean as cold water and let the motor generate warm. Just a thought.
Would make a great science toy! Also, would be an interesting way to build a pump!
Amazing
The last one of those I saw used loops on bicycle spoke like wheel. The loops would expand in the hot water and slide a roller on the spoke to push against a central cam which would spin the assembly. The loops would then move into cold water tank contract then repeat.
Very good! I'm thinking nanoscale applications along the lines of single-celled flagella, rotating discs in a transmission system, etc. Magnetic dynamism could be integrated into the system using Praseodymium.
Well, d'uh.
Well, d'uh.
Good job
Amazing!
Fantastic !!!
Amazing!!
Thanks, good presentation. I got some Nitinol wire, but not sure how best to join it. Can't seem to find any Flux 400 anywhere, or it's not commercially available. How did you join your Nitinol wires? You find it better straight or coiled like you have it?
Love it.
One more to go! Cheers!
but can it run crysis
yes
you still have to heat and freeze the water
yes if overclocked
A hot air and a fan for the coolmside works also. Just need the spacing to be set up different. Air is less messy
After watching this, now I want a bourbon!
This is similar to Sterling engine in that it is a heat difference engine.
I could see something like that possibly used for pumping ground water in a hot climate. The sun and hot air could heat it up while cool ground water cools it down. Or anything similar with solar heat and large body of water.
Yes,,,,,,, an yes that is just cool....
It's more a Nitinol pump !! lol ! Nice idea !
damn that's pretty cool!
O.K. so if you use solar panels to heat the water in a Nitinol engine would It generate more electricity than just using the solar panels?
Awesome. I'll drink to that.
If there was somehow a way to keep the water cold and the other water warm, would that mean infinite energy?
we might not be able to use these for large industrial scales. but these devices are still important. they can be used in cases where resources are limited. Say for instance in the wild or we stranded some where at which we could use nature. eg: get natural ice, get water from hot spring and build one to do whatever you need and can use it for. For the sterling engine; we could use it in times of no electricity. Just build a small one that connects to a small generator, light a candle to get it running and charge your phone or radio.
Differences between hot and cold and space are really huge so maybe it would be vary good for powering space craft for a few years before fatigue stress starts to set in the metal.
Genius!
Hello, I just recently learned about nitinol and was absolutely blown away by it's almost magical properties, and I was wondering if you'd be able to share with me some details about the machine, transition temperatures, or if you even had plans of some sort available and were willing to share. I understand it's a big ask and I'm just glad to see such a fascinating contraption. Amazing work!
Great experiment! Figure out a way so the nitinol wire does not need to touch the water and your engine will work great! Perhaps using a similar idea to how a nuclear reactor cools down with out contaminating its water. Try using a induction method. great job!
The idea of generating mechanical power directly from heat seems like it could be more efficient than the general format of internal combustion engines.
You'd need to refine the mechanism far more than this simple, crude demonstration, of course.
But if we invested as much thought and research in this technology as we've already invested in internal combustion, we would probably have a much more advanced result.
Mark Osmond there has been research into this, it was too expensive and difficult to manufacture
Dorpz YTP I was thinking in terms of an alternative form of fossil fuel engine. So you'd get the heat from burning fuel. And the cold could be maintained by a radiator.
It would still require fuel, like current gasoline / diesel engines, but I think it might be more efficient (so you get more energy out of the same amount of fuel).
But admittedly, this is just a guess on my part. My thought was that there is so much wasted energy (heat, noise, etc.) in an internal combustion engine, and if there was a way to translate heat from combustion directly into mechanical work, it would be far more efficient. Whether this is true or not, I don't know. You'd need to ask an engineer that specializes in this area.
Couldn't it be associated with classic engines ? Engine produce heat and this Nitiol engine need two temperature liquid to function : water cooling system could become energy sources ?
Trials have been made with these and the best output they could get was 16% of the power going in, also the metal fatigues quickly so it needs constant replacements.
You are better off with high precision Sterling engines.
Still a very neat process that could have it's use in smaller applications.
MsSomeonenew I didn't realize the metal fatigued. (It makes sense that it would, but this is pretty weird metal, so I thought maybe it was exceptional in that respect as well.) That would pretty much kill the idea right there. I'm surprised at the low efficiency though. I mean, where else could the energy be going, for it to be wasted? I can't see how vibration, friction, or heat could be accounting for over 80% of the energy input. (Eventually, my curiosity about this will bug me enough that I'll have to either do some proper research or perform my own experiments!)
wonder what the possibilities for using nitinol technologies in the home to recycle energy used in a fridge freezer or your heating.
hmm with some freon and room tempurature air, would this work more efficiently? (with some way to keep the freon of course)
I don’t understand why the wheel stopped turning at the end since there was still heat difference available. Any thoughts?
You just save thew world ,man
Ok looks trippy and I like it BUT how will it fair if you were to put a dynamo of whatever size off one of the shafts? Would the resistance kill it making it more of a gimick? It's not very good in the fact you need energy to heat and/or cool water but what sort of power could something like this actually generate?
Genius.
A plastic tray under the two glasses of water ..
I can't wrap my head around why this works.
sir can you upload a video of gear or how to make it that used in this engine. plz
i created a train cart design. it uses es two pistons on each side of the train cart hand and the pistons are cylinder shaped and horizontal.
great video interesting properties inspiring me more in the search of perpetual motion
I wish you the best of luck but I think you will be at it a long time. I appreciate anybody who searches for ultimate efficiency though.
nice goal. will keep you busy untill you die. all goals should be life long.
yeah I agree until I read somewhere laws of thermodynamics only dealt with the infra red spectrum of energy..
fidel catsro
where? donald duck?
@@fidelcatsro6948 what
Hahahahaha
hey have you though of using it as a heat exchanger instead of an engine? pretty much does the same as a vapour chamber just without gases and also you can define the path the wire travels. The only problem is the water sticking to it and falling into the warm water glass. maybe a comparison between this and a plain 6mm solid copper tube in a U shape could show some interesting data.
wonder if this could be used as supplemental motor for a small boat, an outboard heats the water and the outside water is cold Hmmm! nice vid thanks
Did you just figure out how to make electricity to
Because you could add a little generator to it and let it spin to create power 🤩🤩 you are amazing
can that technology be used to make volcano power plant?
how much is the conversion efficiency?
question, would you say it is sort of related to the steam engine? have you done tests on the effectiveness of your device? Things are only rediculous if we cannot find a practical application for them.
Nice job! where did you even find a loop wire like that?
How close do the temp sources have to be? Would it work through a wall with inside and outside temp diff?
It's s good demonstration of real life application of SMA. But the problem is you need to heat/cool water & that takes lot of energy. So this engine can't be called a free energy generator.
Can this run 240sx for drifting pls?
I's it the gear reduction which dictates the drive direction? I guess the problem is if you live in a warm climate it will cost energy to create ice or other cold source in the first place and if in a location with an abundance of ice then again it cost energy to have a heat source?
That burner would have been perfect for keeping the cup on the right hot. Cuz the cold cup although super close would be relatively unaffected, as opposed to a conventional burner stove. Missed opportunity
A great video. Well done sir. Have a drink for me.
Cheers.... Hic!
Would the belt run in the same direction if the upper wheel had the smaller cog?
I still dont get, why it does not block, as the belt "pulls" on both sides inside the warm water.
If it is about torque, the big cog should "win", imho...
Totally cool. How do I construct?
Electic power generator for home use would ground breaking. or when can you build one
Cheers :)
A good one, and a drink for me hey..
Is there any way this could be operated with the heat from sunlight? Maybe to power a fan?
Omg its move so fking fast.i didnt really expect that.
Where can I buy little gears like you have here please? Are they customisable etc
Any idea how much load it can handle?
I wonder if you could use nitinol to improve the efficacy of a stirring engine. Not you, specifically, but someone.
I have a way to optimize the use of this metal in an engine that could power a vehicle interested in hearing about it?
Very clever device! ! Nitinol was discovered by the US Navy in WW2
How did you austinze your wire, i got some and its undeformable. Its just straight and stiff.
Does the gear ratio mean this works with a lot of slip between the spring and the wheels? Since of course the spring can't travel at two speeds at once. If that's the case I imagine the gear ratio needs to be nearly even, with just a slight advantage.
the ratio would be best to be the same as the ratio of expansion of the spring.
it changes length a lot w/ temp, the wheels can spin at different speeds with no slip, that's how it works.
Lets supuse we use it in cars, how would you keep it warm and cold?
I bought one but can't get it to run, the wheels look a little chewed up and I think the plastic gears are slipping. Did I just get ripped off or is that the condition of yours as well?
I see you use a spring but how do you connect the two ends. the ones I can order are strat.
Where can I buy the pulley system from?... Do you sell it?... or can you please give details on how to make it?... Thank you, love this video. I want to have fun and teach kids.
Tony Macklin
His source is in the top drop down description
Hello ,
can you please explain why the result of the mixture of coffee, and there would be an environmental hazard?
Can we use this nitinol with peltier? It is complete engine..