Noren Products Enclosures
...came up recently in Article Reviews...
"To make the units more compact and affordable, the ACL-RC series uses custom-tuned electrostatic air movers
to assist in the removal of heat. The air movers stealthily pull air across the outer fins of our heat pipes, allowing us to use a smaller external fin stack."
I wonder what that's about? Electrostatic speaker? Electrostatic air propulsion like ionizers? Interesting any way you slice it...
Still, I think that subwoofers seem like the practical technology: Easy to drive with common circuits, cheap, efficient. I wonder if very light check valves could be used instead of the 'jet' effect. Would allow for true air pumping, like for CPU. Probably possible with proper tuning.