5 ms·

You know 'space' is a vacuum, right?

• roer 4mo ago
  I don't see how that would lessen their concerns? Exactly because space is a vacuum, cooling is harder since you can't do convection. The math still checks out though. Scott Manley did a video on it, and the top comment has some corrections: https://youtu.be/FlQYU3m1e80 https://youtu.be/FlQYU3m1e80
  • dzhiurgis 4mo ago
    30% of terrestrial datacenter power use is cooling. Space cooling is easier!
    • dgellow 4mo ago
      What makes cooling easier in space? Isn’t it harder due to the lack of atmosphere?
      • dzhiurgis 4mo ago
        Just need radiators, no fans, no piping, no ac compressors, no moving parts.
        • nickburns 4mo ago
          But, but—convection!
        • dgellow 4mo ago
          How? There is no heat dissipation without an atmosphere. I mean, you have dissipation via radiation but that’s very slow
          • roer 4mo ago
            Not that slow if the temperature is high enough. Power radiated is proportional to T^4
            • datadrivenangel 4mo ago
              I don't want to run my cpus at optimal radiator temperatures... 1000s of degrees is not ideal.
              • noitpmeder 4mo ago
                Not on earth at least!
  • nickburns 4mo ago
    [flagged]
    • roer 4mo ago
      Scott Manley is a much more respected source than I am
      • deleted 4mo ago
        [deleted]
    • tomhow 4mo ago
      Please don't post snarky dismissals on HN. The guidelines make it clear we're trying for something better here. https://news.ycombinator.com/newsguidelines.html https://news.ycombinator.com/newsguidelines.html