annodomini2 wrote: Interesting idea, would like to know the efficiency of such a system and obviously cost will be a determining factor.
Sorry, I don’t know anything more about it than what is in the article.
I do like the Rodriguez Ring. It seems to be the most efficient design they have so far.
… Ivan Rodriguez … built a resonator from a … hollow steel tube bent to form a ring … .
In cylinder-shaped resonators, sound waves bounce against the ends of the cylinder. But when heat is applied to Rodriguez
