Acoustic Cooling & How To Manipulate Heat With Sound (Thermoacoustics Part 2)

Resources for further study:

Thanks for watching!
-Ben

[emorag]

Yes, please cover/explore traveling wave engines.

[RealEngineering]

Man, incredible work. You saved me a massive headache in trying to explain this for my James Webb telescope video. Going to reference you in my video as thanks

[sierraecho]

This video is 2 years old and one of the best educational videos of thermoacoustics. Please keep going and create a traveling sound wave demonstration as well, I still do not fully understand how they work.

[hamadaag]

Uhh yeah? Dude turn this into a whole series, please! This is amazing!

[TheFloatingSheep]

Other science channels cover a lot of interesting stuff too but this channel's the one and only channel that I can rely on to find out something new every once in a while, then the other channels start covering the same stuff because of it.

[gavinmurray]

You are very good at relaying info. You simply say what is true. And you disambiguate phrases/words/concepts that people easily confuse. I would definitely love to see more acoustics stuff!

[SoulSukkur]

oh dang. this is advanced. youre even breaking out the mood ring technology

[attilakovacs]

Dear Ben, I'm glad to see the Part 2 of your thermoacoustic video series! You have done a very good job and you are presenting the experiments nicely and clearly. I hope lot of people will start to interest about thermoacoustics because it is a really interesting topic of the heat-engines. It was a good collaboration I'm waiting for your next video! BLADE

[lukearts]

I hope you read new comments on older videos still:
If you combine this video with your more recent video about self-cooling paint, and then build a system made with wind pipes, you could make a fully passive air-conditioner. The wind pipes generate the standing wave, the heat dissipating paint will radiate the heat away (either by feeding heatpipes to a cooling panel, or by painting directly onto the tube in the hot areas. The heat should radiate outward because of how your paint is made (the painted surface sticks to the paint layer slickly, allowing conductive transfer into the paint, while it also prevents the paint from radiating it back into the tube, while the outside will have a greater contact surface with air, allowing for convective cooling on top of radiation as soon as the temperature goes above ambient.
Now if the wind is created by passive ventilation techniques, it would let the hot air create the resonance tone on the way out, while the cooled air pushes down and into the room, creating a fully passive clean cooled airflow even when there is no wind outside.

[squidcaps]

The way those layers were kept separate: genius move. Really good idea.

[ibeauf]

You should try to get a company to send/sponsor you with a thermal camera, you could use one so much!

[KendallHall]

I have YouTube premium so I don't have to deal with ads, but so many YouTubers have sponsors that I still have to skip past. At least the sponsor ads are easily skipped.

[jonasphilbert]

These videos are absolutely excellent! The combination of high production quality and a clear build-up of information works so well. You manage to simultaneously be more informative than most other educational channels, without requiring excessive existing knowledge from the viewer. Bravo!

[BeyondSlowMotion]

Awesome Ben! I always feel like I walk away from your videos creatively inspired. This was incredibly well demonstrated.

[MrLM]

Very much hope there will be a part 3! Also acoustic heat pumps seem to be a very interesting technology, would love to see you discuss the basics of those as well!

[SiloXJones]

The way you've been able to break things down into a MUCH easier to comprehend way is honestly stunning. This is such a complicated topic with so much to try to grasp, yet you've managed to not only flawlessly explain it all, you manage to do it without ever sounding pompous.
That said, HOLY HELL thermoacoustics is SO freaking cool! I never would have thought about using the flow of sound to generate/dissipate heat or even generate power. It would be incredibly interesting to see what the efficiency of such systems would be and explore whether or not they could be feasibly be used in lieu of more traditional methods. Like, is there a way that you could utilize the (natural or artificial) wind to generate a tone that could power one. What kind of energy could a thermoacoustic system provide under those conditions, and would it even be possible.

It'd also be really interesting to see if different gas compositions (in a closed system) would produce results that are different than the natural atmosphere and what difference they would/could make. Higher/lower temps? Faster/slower diaphragm movement? Etc. There are a million questions that could be investigated; could it be possible to generate visible light using a certain gas mixture in a specific situation?

[headbanger]

His models are so clean and more/less ready for a science museum. I hope you get funding from education, sir! Your contribution is massive and very interesting. I hope you’re getting adequate support!

[lorinatzen]

I must say, this is absolutely the highest education-grade quality of YouTube there is. You are a gold standard. Keep it up!

[bigblargh]

I'm a musician and I will gladly watch your videos on acoustics until the cows come home. You are the first person to ever introduce me to thermoacoustic engines & refrigeration. I wish this stuff was taught in physics class, but I REALLY wish it was taught in music class. Thank you!

[sevret]

I'd love to see this developed further, especially chaining the stacks together to get more extreme temperatures and building it into a device that can actually do something even if it might not be the most efficient thing.