[HN Gopher] Solar-powered system offers a route to inexpensive d...
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       Solar-powered system offers a route to inexpensive desalination
        
       Author : Glench
       Score  : 67 points
       Date   : 2022-02-28 18:14 UTC (4 hours ago)
        
 (HTM) web link (news.mit.edu)
 (TXT) w3m dump (news.mit.edu)
        
       | _Microft wrote:
       | Paper, linked from the bottom of the article:
       | 
       | ,,Highly efficient and salt rejecting solar evaporation via a
       | wick-free confined water layer",
       | https://www.nature.com/articles/s41467-022-28457-8
        
       | 6510 wrote:
       | Reminds me of this
       | 
       | https://youtu.be/fJ1NCW5eDNs
        
         | jshen wrote:
         | The video didn't explain how it works :(
        
       | KaiserPro wrote:
       | I'm struggling to understand how this works.
       | 
       | Does the salty water drop to the bottom? or concentrate at the
       | top? How do you extract the clean water?
        
         | learn_more wrote:
         | Clean water evaporates from the top like a traditional system.
         | 
         | This innovation simply helps prevent the water where the
         | evaporation is occurring from getting too salty over time.
        
           | megaman821 wrote:
           | What are all the layers? I have some guesses.
           | 
           | * Dirty Water
           | 
           | * White Foam Stuff
           | 
           | * Heat Absorbing Layer
           | 
           | * Insulation
           | 
           | * Filter
           | 
           | * Brine Water
        
       | thehappypm wrote:
       | This is awesome. Basically it separates the water into two
       | layers, with a sort of a filter of black plastic. The plastic has
       | holes that are optimized such that you get a layer of hot water
       | up top that evaporates easily, but that still allows the movement
       | of salt to prevent the buildup of a really salty brine. Neat,
       | elegant.
        
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       (page generated 2022-02-28 23:00 UTC)