even now, these simple graphics are great for demonstration, not to mention how cool it is to fin an old video like this one

Thank you, I wanted to fully understand how these work before having a go at building one. This is the best explanation I've found on the web so far. Thank you for all the effort you put into it.

Absolutely fabulous. I never knew how these engines worked, let alone the different types. Thanks for your superb production.

the best explanation of stirling engines! thank you very much for this

Thank you for the excellent video. I think I finally understand the sterling cycle now. Great animation.

Beautifully made animation - clear, uncluttered and instructive! Thanks. Now I understand the principles of Stirling engines.

Thank you for a very informative and graphic description of the Stirling Engine.Really enjoyed it!

The power derived from these engines is proportional to the temperature difference between the hot cylinder and the cold cylinder, so do everything to make the hot cylinder as hot as possible and the cold cylinder as cold as possible. To do this, the engine should be built to extract as much heat as possible from the hot gas over the flame, and to cool the cold cylinder as much as possible. With the open flame, as pictured, a lot of heat energy is lost in the hot air that does not heat the cylinder but just passes by. This is true of almost all of the working models on You Tube. The overall efficiency could be improved by increasing the heat transfer to the cylinder. One of many solutions would be to put fins on the cylinder, and then shrouds around the outside of the fins. Thus more of the hot air would pass over the metal and transfer a higher percentage of the heat in the air. An addition improvement would be to duct the outcoming air through a heat exchanger to preheat the air before it enters the combustion area. A second improvement would be to improve the transfer of heat from the cold cylinder to the surrounding air by putting fins on the cylinder. An additional improvement would be a ducting system like a stack to help speed up the cool air flowing over the cylinder. For maximum heat transfer, both cylinders should be made of copper, or aluminum. the former having the higher heat conductivity and higher cost, with the latter having a slightly lower conductivity but much lower cost. The principle value of the sterling engine is that it can use fairly low temperature heat, possible waste heat from a different type of heat engine. For example, the hot cylinder could be placed in the exhaust pipe of an gasoline engine, BMW used a similar idea; they added a steam engine to a gasoline engine where that water was heated by the exhaust gas and improved the overall efficiency. Back in the 1900's sterling engines were used to drive pumps and other machines because the heat could be derived from burning firewood. I have seen some of these working. Basically, there was a firebox with the hot cylinder placed in the chimney. If it were used to pump water, some of the water could be used to cool the cold cylinder, or the cold cylinder could be placed in the pump outlet. Dave Alexander, Bachelors and Masters degrees in Mechanical Engineering from Ohio State University.

This really helped me understand the concept behind the Stirling engines, thanks so much and keep up the good work.

This is the best video i could find of how these engines work. Thanks

The easiest to understand explanation I have come across, brilliant work, thanks.

Simple straightforward and extremely educational best video I have seen for a long time congratulations please keep up the good work God bless thank you

Beautifully done and explained video! Thank god for computer modeling and awesome channels like these, I wasn't even aware of the ALPHA Stirling engine until now, that's very clever adding a cold cylinder!

Nice job, impressive!!

excellent video on how the 3 types of Stirling engines work, I have never heard of this engine before seeing one at an agriculture show in 2017.

thank you so helpful to see the inside of these engines!

Well done thank you. best explanation found on the net so far.

Incredible machine...as is the presentation! Well done! I learned a lot from this!

Excellent explanation. Thank you.

Brilliant! Absolutely brilliant!. Thanks for putting that together.

Excellent demonstration, thank you.

This is an excellent video. this is probably the best video or explanation I've seen to date very well thought out an excellent presentation.

Best explanatory Stirling video I have ever seen.

Very Cool, on one side...

I have not seen a better technical video anywhere and in this case demonstrating use of the Stirling Engine. I am looking forward to what else you have. Thanks.

this is a fantastic video. thank you

My god, hats off to your animation sir, you saved me a lot of time, this video really helped me understand and remember the concept for all my life.. thanks alot.. keep it up..

awesome video 10/10. thanks for the terrific presentation.

Very good, I showed this video for my students, very good realization. Excited, Thank you so much.

Congratulations for the excellent explanation. Thank you so much for the video.

This is the best animation+explanation I found untill now on youtube.

Absolutely fantastic, my children will love this & force me to keep my promise of building an engine. Thanks, Vin.

this is very useful! Best stirling demonstration on youtube I would dare say

Just finished thermo and I thought this was so cool! Thanks for the video!

Wonderful explanation.... Thank you for such videos :)

Excellent video, thanks for sharing!

Voici une explication très didactique et claire du fonctionnement du moteur Stirling, le sujet est très bien synthétisé ! Clear explanations on the Stirling Engine working principle, the best video I have found so far about it !

Fantastic presentation! 😀👍

thank you sir.

Like others already said, it is the best video I have seen to explain how these marvels work. All you regularly see is botched together beer cans and coat hangers, which leaves a lot not explained. I have a great understanding of how they work. Now I can move on to implementing my new knowledge and start a build of my own. Thank you very much.

VERY nice! My engine is a cross of BETA and GAMMA. Well done, and thanks for posting this. GREAT educational stuff here.

Thank you so much for doing this. I FINALLY understand how these blasted things work !!! Exceptionally well done video.

A good video explaining the working principle of [Stirling Engines] most clearly! TKS very much !!

Very cool illustration with the music and stuff there, thank you. :)

Thanks very much for this clear and welldone video

great explanation through a beautiful animation

Thanks, this was the explanation that helped me understand stirling engines, all the others were very confusing.p.s. I'm a big fan of alpha stirlings :D

Informative. Great, simple design. Cheers

Very cool YT. I really enjoyed your animation of how they work. Thanks!

These engines are fascinating ! I only discovered their existence a couple of weeks ago and wondered what kind of magic powered these littles devices. Thanks for the video demonstrating the pretty simple (and yet awesome) physics behind it :)

Excellent video! Thank you so much!

Very good video. I can understand 3-type stirling engine with the video. Thank you !!!

Finally an animation that show show it works

Thank you, the best explanation I've found on the Internet

0:20 just looking at the 3d model made me understand how they work big thanks to you kind sir

Great vid!!I finally understand.. QUestion Sir, DO we need to have the cylinders seal tight? And which design is fastest and with stringer torque?

Brilliant explanation between the alpha, beta and gamma Stirling engines. As far as the heat cycle is concerned they all operate the same but the mechanism how it is achieved varies as shown so clearly in this videos. There are other related machines as the Manson Engine and the thermoacoustic Sterling engines which are as brilliant as the ones shown in this video. Congratulations.

excelent demostration

Wonderful explanation.

Thanks a lot for your hard Work!!

great explaination...simple to understand

Definitely needed this thank you!

Very good explanation. Nice..

I have to say, the gamma type is my favorite because it seems to be the most efficient as well as the easiest to implement in e.g. a canoe or water cooled setup.

excellent video

Nice Work Bravo !

This is a very nice, informative, video.

Thank you! Thanks to you I can understand how it works

This is the best explaination!

Brilliant illustration and explanation. The Beta and Gamma engines, having a non-tight fitting piston, presumably can be optimised by the space allowed around the displacement cylinder: it's not clear what this should be.

Sunt fascinante cu aceste exemple se poate incepe educatia unei GENERATII.

excellent .. you done a brilliant job made my biggest confusion solved to understand engine ..very many thanks ;)

A WOW-moment on the internet! Thanks!

Good stuff. Looked at a few other vids that did less of a job explaining. This was a solid job.

Nice video, thank you. I'm interested in designing one of these using Solar to heat the hot side. I think to increase efficiency, it would help to put vacuum insulation around the hot side, use ultra black carbon nanotube to coat the hot plate with. Then for the cold side, use composites of super high thermal conducting material, with also also a evaporation unit connected to it, that you can put water, alcohol, or a blend in, to speed up the cooling down process. Everybody wants to use parabolic or Fresnel lenses as the solar concentrators, but honestly a funnel design while less efficient at concentrating the Solar energy to a point, you don't have to move it around as much to adjust for Sun shifting and it spreads the heat across the plate better, because it's more diffuse. If you're using vacuum insulation (double thick wall borosillicate glass) and ultra black/ultra light absorbing material, you don't need or do you want the crazy high temps that a parabolic or fresnel lens can produce anyways. That, and I'm curious if this could drive something like an ultra light weight scooter or the like, and neither parabolic nor fresnel could work for that. What's interesting is that at night time, theoretically, you could reverse the process and use the hot side as the cold side by radiation up to space. For the hot side that is more tricky. Maybe a cheap, light weight, chemical exothermic type reaction? And switch out the evap unit with a vacuum insulated unit to hold that heat in as long as possible.

Great work, sir !! ..

Good explanation with animation

Excellent video - thanks! I learned a lot. Will check out the kits and plans to see what else you have - potentially very useful in my classroom.

Hi, best description and animation of sterling engines that I have seen. Bye

This is very helpfull. TANKS

I like this a lot

The only thing missing from this awesome presentation is the regenerator, you could have had it changing colour like the gas spheres.+1 though :)

lots of information thank you so much to put something like this into that easy to comprehend thank you.

That was excellent. Thank you.

Nice presentation.

Great video with simple and easy explaination very nice😁

very well explained. thanks

Very good visualization of heat and airflow and distinguishes the different types very well. Better than any versions I have seen on KZfaq. However, you did not show the regenerators at all. Perhaps you could improve your video by describing regenerators at the end of the video.

Thanks. Very good work.

very interesting and valuable video

great video sir

These type of stirling engines or similar, can be designed into a residential or industrial boiler system or combi boiler to run off the same burner or heat source as a boiler and be used to generate power. The power can be used in conjunction with solar panels to charge a lithium ion battery pack as an example.

excellent video! which model is more efficient? I assume the last because it requires less energy to run....?

Nicely done!. Thanks :)

Perfect thanks 💪👍

Great video, much better explanation than others i found. The Alpha design is really tough to understand still haha

Great video, renderings and illustrations! However, it is hard to see (at least for me) if the Alpha config. has 4 strokes - it seems that it only has 2 strokes as do the other two!

An excellent video.

Very nice good does for the knowledge. Thanks.

Outstanding!