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Thermoacoustic cooling

L

l0cke

Gawd
Joined
Aug 13, 2005
Messages
810
Has anyone here tried/heard of thermoacoustic cooling? It uses a speaker to change preasure inside a sealed box, making pipes that run through it cold.
this explains it all
http://www.benjerry.com/our_company/sounds_cool/

here is a picture of one and somemore stuff about how it works
http://www.mecheng.adelaide.edu.au/...hp?option=com_content&task=view&id=6&Itemid=2

This would be the ultimate thing to have in your loop. Can support more then one pipe too.

Does anyone want to try building one?
 
Interesting, however I have a feeling it would be highly inefficient....

Just a hunch, I'll bet it is safer for environment, but not very efficient.
 
Shit I'd love to make one of these. Too bad I don't have the expertise/means/tools/funds to do it.
 
In all my years of doing car audio I would never have thought that all those decibles could run the a/c in the junker car I had the stereo in... seriously though. This would not be that difficult of a project to do. Even getting some helium would not be too too difficult. A good 12-inch woofer with plenty of extension bolted to a can filled with helium... Really is quite a simple thing to do To make the accoustic pressurization more efficient you could construct a parabolic cone for the chamber to focus the pressure energy and make things a little more efficient. That would involve some serious metal work though. The only real issue would be current draw. To power something like that I would think would draw more power than a compressor. But I guess if you are not playing dynamic sounds just tones then the draw would stabilize. A custom amp designed around the frequencies to be played would help efficency as well. I would love to try this but my 2 college degrees needing to be finished and my daughter and wife need some love as well. I think its a great idea though
 
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