Sound and heat are both vibrations, ironic isnt it

mpteach · Post by **mpteach** » Thu Jan 08, 2004 1:31 pm

How does accoustic foam convert large scale vibrations(sound) to atomic vibrations (heat)?

look at this: www1 & www2
Thats a reversal of the process in which 173dB sound inside a presurized tube is used to create a thermoaccoustical referigerator with no moving parts.

here an internesting discussion on using sound to cook www3

CoolGav · Post by **CoolGav** » Thu Jan 08, 2004 3:18 pm

Cool!

When will we get them as LSFs for PC's??? And will they be quiet on the outside?

mpteach · Post by **mpteach** » Fri Jan 09, 2004 9:50 am

CoolGav wrote:Cool!
And will they be quiet on the outside?

That would depend alot on thier engineering

Most likely they would work in the ultrasonic range. I think that the device creates standing waves inside the tube of highly compressed gas.
at 10 atmospeheres the speed of sound is faster so they would need a decently high frequency to pruduce a small wavength for a practical HSF.

Imagine trying to decouple one of those things? lol