[HN Gopher] Building an O2 concentrator for welding and vacuum t...
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       Building an O2 concentrator for welding and vacuum tube work
        
       Author : gtsnexp
       Score  : 56 points
       Date   : 2024-06-15 08:44 UTC (1 days ago)
        
 (HTM) web link (www.nickpoole.me)
 (TXT) w3m dump (www.nickpoole.me)
        
       | gtsnexp wrote:
       | accompanying video:
       | https://www.youtube.com/watch?v=lB3hHk1_2V0&t=97s
        
         | jcims wrote:
         | Great video!!!
         | 
         | I was surprised how quickly the cycle happens between media
         | beds (every few seconds).
         | 
         | I wonder what the energy budget is vs electrolysis. It's
         | probably orders of magnitude cheaper (albeit a bit dirtier).
        
           | cyberax wrote:
           | Electrolysis is super-expensive and slow. Industrially oxygen
           | can be extracted cheaply using fractional distillation of
           | air, but it can't be scaled down for individual welders.
        
       | supakeen wrote:
       | Cool idea. I would be interested in knowing the concentration you
       | achieve and flow rates (LPM/CFH). This wouldn't work in my
       | workshop as we don't treat our equipment nicely enough and we
       | don't have sparkies to tend to it.
        
       | causality0 wrote:
       | I wonder how this performs compared to the cheap concentrators
       | you can get off ebay.
        
       | hristov wrote:
       | Interesting, but why did the original poster link to part 2 of
       | the thing?
        
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       (page generated 2024-06-16 23:02 UTC)