Stirling engine - Explained and animated 3d
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- Опубликовано: 24 янв 2025
- Stirling engine - Explained and animated 3d
A Stirling engine is a heat engine that operates by cyclic compression and expansion of air or other gas (the working fluid) at different temperatures, such that there is a net conversion of heat energy to mechanical work.
amazing how this didn't explain anything! impressive!
actually, its the best explanation I have seen, straight to the point and easy to understand
(given that you know that air cold compresses and hot air expands, if you dont know this then yeah it doesn't explain anything)
I was thinking the same damn thing when I saw your comment.
BTW this video also explains what happens inside a black home
@@terryeaster1 That is racist dude not cool.
@@thomasscalise3776 what
ruclips.net/video/wGRmcvxB_dk/видео.html
Wow, the animation and explanation are way off! The power piston and cylinder are on top. The big disk in the bottom is the displacer, which does not generate power, but simply moves the air between the hot plate (bottom) and cold plate (top). When most of the air is on top, the air cools, causing the pressure to drop, pulling the power piston down. This raises the displacer, causing the air to move down to the hot plate. The air heats up and expands, pushing the power piston up. The power piston and displacer are out of phase because it takes a bit of time for the heat to flow in and out of the air., as well as inertia effects.
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Frage wo ist der Regenerator?
@@1islam1 Islam's prophet Muhammad married a 9 year old and raped and killed anyone that didn't accept his religion.
@@1islam1 unrelated to the video, or comment
@@1islam1no one cares
Have you ever seen how to keep jars? When the inside of the hot jar begins to cool down, the cap collapses down. It is simply sucked down because the pressure decreases (the gas cools down). In your video, the gas is constantly warm from below (error!), The piston pressing (and thus cooling) the cold gas should be shown in the lower position, when the DIPLACER is in the upper. The cold gas sinks to the bottom of the cylinder and draws in the DISPLACER again
Before I watch this video I had an idea how sterling engine works. But now after I have watched this video, I have no idea how the sterling engine works.
Same to me.
try this one ruclips.net/video/tqxLQ3HcXgU/видео.html
Don't treat every source like it's actually true.
Viewers who don't understand the concept will have a hard time translating the mechanical timing without the mention that Momentum of the FLYWHEEL has to drive the motor through a "Stagnant period" in which there is no pressure or vacuum on the green piston. a more efficient stirling (Electronic Stirling Engine) would suddenly SNAP the displacer from hot side to cold side, effectively eliminating the "Stagnant period"
Viewers DO understand THIS will NEVER work.. unless something else turns the flywheel.
@@philip6419 ruclips.net/video/3JZLHJ58ioI/видео.html Stirling engines are 1800s technology. Every highschool physics class should have a chapter on this. It's a good way to teach ideal gas law.
fltywhell and timing mechsnism and the walve is missing.
0:35 Why is the piston going down
Green
I wanna make a DIY engine but my biggest concern is the sides of the piston , do they have to be sealed? Like can the piston be slightly slimmer than the casing?
And how to gas seal the openings between the shaft and the gas room
CAN YOU SEND THE NAME AND AUTHOR OF THE MUSIC IN THIS VIDEO . THANK YOU JAMES , U.S.OF A.
You failed. Somehow the hot gas gets around the large 'piston/blocker' and cools all driven by the power piston. The flywheel must be initially activated externally but after the first power stroke momentum keeps it going. None of this has been shown.
Hello !
It's a very good concept. But it has almost no power. It turns like a soft wind blowing. It's working but what for ? Perhaps for low current like electronics.
Swedish submarines for starters
Unfortunately I think this video does not explain how the Stirling engine works. I would advise jordi3736 to remove it or remake it using my analysis of how the Stirling engine works that rick57hart also presents below in the comments.
The cycle begins when the displacer is in the upper part of the cylinder. The air below the displacer is heated and therefore expands pushing or squeezing up past the displacer that is not in an airtight fit with the cylinder and pushes on the diaphragm or piston causing the crankshaft to turn turning the flywheel. This is where the energy comes by converting the heat energy in say the flame at the base of the engine into the mechanical motion of the flywheel. Then as the flywheel begins to turn the displacer travels downwards leaving a space above the displacer filled with the cooler air. The engine continues to turn over such that the displacer now heads back up towards the diaphragm or piston pushing the cooler air back down into the space below the displacer where it heated again and the whole cycle repeats itself.
I had to watch the first minute and twenty five seconds of this video:
ruclips.net/video/FCjYZT6FJm4/видео.html
many times but I got there in the end when in this video the presenter is talking too quickly for me.
Peter Nolan. Ph.D.(physics). Dublin. Ireland
Peter Nolan
That's what I was thinking. Should have the hot gas went to the top of the big piston?
@Antonius Theiler
Hello Antonius,
Danke, :)
Peter.
Frage wo ist der Regenerator?
@@antoniustheiler1494 I can only understand English. I'm sorry.
Thousand animations of stirling engines on youtube. Like five are right. This one is wrong. For some reason, almost everyone seems to think the displacer is being moved up and down by the expanding and contracting gas. Hint. It's not.
I am glad you commented on this because i noticed the same thing. The displacer is powered by the flywheel, the piston is directly powered by the expanding steam. This animation is in reverse.
If you would link a video that is right that would be nice
And none explains the diesel sterling engine like in Saab submarines. I guess it's a secret.
I agree the explanation is wrong, lots of people on RUclips try to explain something which they do not understand themselves:-((
@@1495978707 Here's one that seems to be right. ruclips.net/video/aagF0v5qjtk/видео.html.
Graphic should slighty turned so it is possible to have a better view of the crankshaft
Nicely done, it becomes plane in an instant.
You have understood nothing my friend, the hot air has to pass on top of the displacer piston that is why it does not fit properly and it passes into the power piston and cools down!!!!! this chap does not know how a Stirling engine works its a case were a blind man leading another blind man 👎👎👎
@@johnhili8664
Mate, I was taking the mickey. Better that than totally deride. Like some.
no matter what the video it has to have background music, why ?
this präsentation ist doesnt correkt. The heat goes biside the big piston an press the little piston to high position. Thats korrekt
Tell me what's inside
Die Animation macht mir die Funktionsweise der Stirlingmaschine nicht klarer. Warum geht der Kolben wieder herunter, wenn darunter heiße und darüber kalte Gase sind? Ist es allein das Schwungrad? Dann frage ich mich, wo verbleiben die heißen Gase unter dem Kolben. Die einzige Möglichkeit ist die, am Rande des Kolben nach oben vorbei zu huschen; nur, warum gehen sie nicht gleich da vorbei und lassen den Kolben stehen?
ytdopaso a
WOW
The Best explanation!!!!
Simple... wonderfull!!! Step By Step.
Really good job!!!
You forgot the timing mechanism controlled walve... without that it wont work.
من الجزائر . بارك الله فيك اخي على الشرح الميسر
Why i didnt see transferring gas
Sehr gut erklärt 😁🔥
What aplication you use??? , i got homework to make animation about how stirling works, but in single silinder design.. please tell me 😢
@Dirk Pitt And your teacher should have told you that in English the word cylinder is not something one should write with a capital.
The only wrong things about this video is that the displacer should have a little clearance at the bottom so the air heats up... The displacer is not doing useful work, it's just moving the air inside the chamber from hot to cold to expand and contract. When it says "Expansion gas"in the video, it should actually be contraction because the total volume of the chamber still contracts if you carefully look at the power piston( that still comes down a quarter of a turn). When it says "Transferring hot gas" it actually transfers the cold one into the warm region in order to be heated (because the displacer is moving up..), and so on...
Apart from the writing, the animation is very accurate though.
WHAT? "The ONLY thing wrong.."
Khristian.. EVERYTHING is wrong with this contraption.
The animation is good, but the explanation is wrong. I'm afraid, that the author did not really understand this machine. 1. The yellow piston can not work, because it is not tight - the air flows around it. 2. In the beginning, there is no air under it - so what should expand? Only the green piston is able to work. The yellow piston is moved by crankshaft, piston rod and flywheel.
1. "the air flows around it" The air MUST flow around it. The heated air (near the bottom) flows up, past the yellow cylinder. The volume inside the can increases, forcing the green piston upwards....driving the machine.
2. The crank shaft then allows the yellow piston to descend, forcing more air to the top (again, PAST the sides of the yellow piston), resulting in less air being heated. Total volume decreases and the green piston descends.
The key point is that the yellow piston is "floating" (the connection to the crank shaft is usually something like a thread). It doesn't drive the machine, it simply displaces the air so that it's primarily close to, or far from, the heat source.
Presumably, if you engineered your engine precisely, then the yellow piston could have a rigid attachment.
That is exactly what i said. But the explanation says, that the expanding hot air would move the displacer(yellow piston) upwards. But, that is wrong. It would be better, if he animation would start with the displacer at its top position. Then it would be clear: there is hot air below it. As next the displacer is pressed down by the piston rod. Now the hot air over it cools down, its volume contracts, and the green piston gets sucked down (is working). As next, the displacer gets lifted up by the piston rod. Now the cool air is moved to the hot bottom, heats up, expands and this moves the green piston upwards(work). The green piston is only reacting to the total volume, not to the movement of the displacer. The movement of the displacer does not bring power to the crankshaft - the opposite is right: It costs power to move the displacer up and down. The displacer is functioning, but is not working, it is not transferring work to the crankshaft.
Nice explanation Rick, thanks.
The yellow piston cannot be tight because the gas must freely flow around it, The displacer is the beauty of the Stirling engine.
dan ricci
And I've seen some displacers with holes drilled in them.
This explanation is wrong. The large piston looking thing just moves air around (thus the name displacer). It is not a piston and does not compress the gas. Contraction occurs when hot air moves to top of bottom vessel and it is cooled by the cold upper surface. This contracts the air volume and pulls down the little piston (the thing on top). The contraction volume must be less than or equal to the air in this piston. This system is completely closed.
No esta bien explicado
Falta el ciclo donde el gas frío de arriba pasa para abajo para luego calentarse otra vez y expandirse
I watched this video and I still dont get it.
The efficiency of Stirling cycle is __________ Carnot cycle.
A. greater than
B. less than
C. equal to
Great video
Wrong !!!
It is brilliant self explanatory beautiful presented love it,heat pushes up cold push it down momentum continue.
Really mamoo? There's nothing under the disc! HOW does heating 'nothing'.. push up a disc that isn't sealed, anyway?
In todays schools.. I bet you get an A.
Cold shouldnt push it down ffs
This isnt convection
اشعر انا الفيديو مفبرك هي اداة محكمةالاغلاق كما شاهدنا الفيديو من اين دخل الهواء البارد اليها
Not too shabby, thank you
Nice model ossumes
This could be done with magnets
All wrong, do not explain how its work.........but showing wrong function in animation.
this is wrong! it doesn't explain well
No u
que pena me da. Hay 1,7MIL de personas engañadas por este video! Antes de dar un like se ha de asegurar de que es cierto.
Its gamma type of stirling engine
Good idea
I watched the video and thought this is the worst piece of "explanation" i have ever seen posted.
Jetzt hab ich das kapiert, ich wusste das aber schon mal
Heil Merkel
Useless vid, does not show the gasses transferring around the disperser, many other mistakes.
This video confused me more!
I see a lot potential for improvements: The housing, and also the yellow piston will lead heat to the cold side. So, the hot side and the cold side should be separated as far as possible. Maybe it would be the best, to have a hot housing and a separated cold housing. The yellow piston should be made from a bad heat conducting material. It, and also the cylinder should be much higher. The losses of heat(energy) should be minimized.
Rick57hart I agree that the explanation is not all that good but I have studied and built stirling engines for about three years and designed an electronic stirling engine. THIS animation is GREAT!!! you have made it clear that you do not know how Stirling engines work. Your point about the yellow piston not fitting tight enough is precisely why it DOES work. NOTE; the yellow piston is not a drive piston, it is a DISPLACER PISTON! it only moves the air from the hot surface to the cold surface. Your point about the Yellow piston being made of insulating material is RIGHT ON _ it is usually made of styrofoam or wood or some non conducting material for exactly the reason you said. I suggest you keep watching Stirling engine videos until you get the concept. Here is a hint. NO AIR GOES IN OR OUT OF THIS ENGINE the air only becomes hot or cold supplying pressure or vacuum to the GREEN piston. Hope you get it because it is truly an amazing engine concept! ! !
This animation might be great, but the explanation in it is entirely wrong. The author clearly did not understand how a stirling engine works.
كيف يمكنني ان احصل على محرك مماثل
Hichem Ziin
مالفائده من هذه الآله
Title change: Stirling engine - poorly explained and poorly animated 2d
incorrect, backwards explanation.
also is fake .. you say that the gaz need to expand with fire but there is no gaz on the piston even if there some oxygène they will be disappears between seal and piston .there is no power push
I just realised It's STIRling
and not Starling🐦
😅
This is the worse i Have seen, I want the money back that you received on the advertisement
Totalmente erróneo, no explica nada de acuerdo con las leyes de la termodinámica.
Yeah that’s not how a sterling engine works
Tel que c'est expliqué par le dessin animé, ce système ne peut fonctionner !
My friend your are trying to explain something which you don't understand yourself!!!!!!! go and find a site to teach you how a stirling engine works if Rev Stirling saw your video he would be laughing his head off😁😁😁
Awesome
ややこしいなぁ
Wow
muito bom
We came to be educated and you play horrible intrusive music instead? Best of luck, but this is a rather awful format.
“I bear witness that there no other God but Allah, and I bear witness that Prophet Muhammad is the Messenger of Allah”
👍💯
De diex
The worst explanation of all Sterling engine demonstrations
Damn you just wasted my time
USELESS...and from the little I know, WRONG!
This is a bad video
Utter rubbish.
Seriously? This explains nothing!
How does Hot air make the big disk rise when there's NO air under it to heat up?
'Cold air'? From where? The air above the big disc? That will get HOT if it's being compressed.. and That happens ONLY if the disc is sealed.. but your isn't sealed so then it WONT rise.. because there ISN'T ANY PRESSURE to raise the disc. NOT sealed means the HOT air will just circulate all around the sides of the big disc.
You have NO idea what your trying to explain.