4 ms·

If anyone wants a video of it in action: https://www.youtube.com/watch?v=vdD0yMS40a0 https://www.youtube.com/watch?v=vdD0yMS40a0 [Linus Tech Tips]

• wkat4242 3y ago
  Interesting. So it's not actually solid state. It uses piezo vibration to create airflow. It's still got moving parts. But it's much thinner than a traditional fan. Really solid state active cooling would be something like a peltier element which are really inefficient and could cause condensation. I don't think they have been used in off the shelf PCs for those reasons though hobbyists have certainly made builds with them.
  • syntaxing 3y ago
    Piezo actuators are solid state devices, though the definition can get hazy. The biggest issue with heat pumps like TECs is that you’re always paying the entropy price so you need more energy to move energy. But you also need a thermal sink somewhere to remove the generated heat. Ends up being a vicious loop for electronics.
    • wkat4242 3y ago
      The actuator perhaps but the wiggling thing attached to it that moves the air? I don't think that's solid state? If it were you could even call a fan solid state.
      • wkipling 3y ago
        On a macro scale it is solid state. Ultimately everything is vibrating when you look close enough.
      • postalrat 3y ago
        The piezo is a single piece while a fan has at least two.
  • randyrand 3y ago
    Even SSD's have electrons in them that really do move. Gotta draw the line somewhere.