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by londons_explore
1614 days ago
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> conductivity does not depend on pressure I think it might be fumed silica aerogel at about 0.1 bar. This paper describes the use of the same material for building insulation: https://www.researchgate.net/figure/a-The-thermal-conductivi... I suspect the key issue will be maintaining that low pressure for the ~100 year lifespan of the building. Perhaps future versions will come with micro pumps so that once per year the pressure can be pumped back down to 0.1 bar. Looks like for about a dollar you can buy a little 3 volt vacuum pump. One per panel out to do a decent job. |
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