XPost: sci.space.policy, sci.physics   
   From: invalid@invalid.com   
      
   On 10/14/2016 1:30 PM, Fred J. McCall wrote:   
   > Serigo  wrote:   
   >   
   >> On 10/14/2016 6:25 AM, Greg (Strider) Moore wrote:   
   >>> "Jeff Findley"  wrote in message   
   >>> news:MPG.326a76e45028f09b98983c@news.eternal-september.org...   
   >>>>   
   >>>> In article , jimp@specsol.spam.sux.com   
   >>>> says...   
   >>>>>> It's not like we're constrained on how much space we are going to >   
   >>>>> spread out   
   >>>>>> our solar panels over. No neighbors are going to complain.   
      
   >>>>> Yeah, sure it would be possible to cover half of Mars with solar   
   >>>>> panels and get lots of power but that is not practical nor economical.   
   >>>   
   >>> Nor necessary.   
   >>>   
   >>>>>   
   >>>>> To get the energy of a little 50 MW reactor you need well over a million   
   >>>>> square meters of solar panels that only work during daylight.   
   >>>   
   >>> That's nice, you're the one claiming that you want 50 MW of power 24/7.   
   >>> No one else is claiming that.   
   >>>   
   >>>>>   
      
   >>>> So bring a nuclear reactor, but you'll be constrained as to how bit it   
   >>>> can be, so I seriously doubt you're going to see a 50 MW reactor on Mars   
   >>>> anytime soon.   
   >>>>   
   >>>> Jeff   
   >>>   
      
   >>> Nor will you need one! I mean ISS provides its complete power for the US   
   >>> section at 120kw.   
   >>> So small reactor, or a bunch of relatively cheap solar panels.   
   >>>   
   >>   
   >> but ISS does not provide its own food, nor clean clothes, nor   
   >> replacement water and N2 and only supports 3 people, 6 for short times   
   >>   
      
   > Uh, no.  Normal crew on ISS is 6-7 people.  You think we're shipping   
   > up huge loads of WATER to ISS?  That's really quite funny. In reality,   
   > ISS gets about 2,000 litres a year of 'replacement water'.  Most of   
   > the water on ISS already comes from recycling.  Note that water is   
   > used to generate O2 on ISS. 'Replacement' N2 is a vanishingly small   
   > amount.   
   >   
   > Mars has lots of in situ water and nitrogen.  On Mars you'd just wash   
   > clothes.   
   >   
   >   
      
   Nasa says 0.43 gallons per day per person + 0.21 gallons for food per   
   person, another NASA site says ISS uses 3 gallons per day per person   
      
      
   ISS has a N2 tank on the side of it.   
      
   what is needed is a way to "wash" clothes without water.   
      
   https://cei.org/news-releases/federal-efficiency-rules-ruin-washing-machines   
      
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