From: gossg@gossg.org   
      
   Serigo  wrote:   
      
   >>>> And what we breath out has the same amount of nitrogen in it, so you   
   >>>> don't need any more but to replace leakage.  And nothing says you HAVE   
   >>>> to use nitrogen for the inert component of atmosphere or that you have   
   >>>> to run 15 psi.   
   >>> what else are you going to use ?  do you have any ideas ?   
   >>   
   >> You can use anything you like, as long as it's non-toxic.   
   >   
   >wrong criteria.  name a gas, and I will show you the problems with it.   
      
   I think argon works.  What happened to those chlorofluorocarbons like   
   in "The Abyss"?   
      
      
   >>> N2 is the only practical one.   
   >>   
   >> No, but it's probably the simplest and cheapest.   
   >   
   >if no, name a gas.   
      
   >>> and you have to take a lot of it,   
   >>>   
   >>   
   >> Not really.  After all, it's not consumed so you really just need   
   >> enough to fill the people spaces plus a little left over for 'make up   
   >> gas'.  There's nitrogen on Mars,   
   >   
   >it is a rare gas on Mars, less than 0.002% so you are going to haul up   
   >an air liquifying plant to Mars ?   
      
   >>> all in *high pressure heavy* tanks.   
   >> Oh, don't be silly.   
   >   
   >what does N2 come in ?   
   The air you're currently breathing.  Strip out the CO2 and the stale   
   socks and add more oxygen, but keep the N2 circulating.   
      
   You're not going to tank ordinary air, are you?   
      
   --   
   We are geeks.  Resistance is voltage over current.   
      
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