5 ms·

I found this video which seems to animate the concept nicely: https://www.youtube.com/watch?v=udffed4Pq3g https://www.youtube.com/watch?v=udffed4Pq3g

• onceUponADime 7y ago
  Thank you, that was fascinating.
• jpuderer 7y ago
  Awesome. The video made it crystal clear.
• timonoko 7y ago
  Bloody Hell I did not know that. I have parts of broken Katadyn PUR-06. I was thinking of rebuilding it from better materials. The pressure recovery is the worst part. I can totally fathom now a hand-held desalinator with only rotating parts running from solar or Li-On batteries.
  • timonoko 7y ago
    PUR-06 lasts 300 days, not "indefinitely": https://youtu.be/dNjdgfGgPdE?t=208 https://youtu.be/dNjdgfGgPdE?t=208
  • pfdietz 7y ago
    I don't know how well this would scale down. Viscosity would work against you.
• gonzo41 7y ago
  That is such an incredibly smart piece of design. A tip of the hat to whom ever thought it up.
  • pfdietz 7y ago
    Leif J. Hauge https://www.powershow.com/download/3b604b-ZGQwN/Pressure_Exchanger_development_history_powerpoint_ppt_presentation https://www.powershow.com/download/3b604b-ZGQwN/Pressure_Exc... Read the history, including how the then-current prototype (out of series of improved versions developed over the 12 years it took to get to a market ready design) and all the inventor's personal belongings were lost in the invasion of Kuwait.
• zo1 7y ago
  Awesome video. One of the better uses of Youtube, and what we should be striving for in terms of "online content".