ribbon cable current (2023 Update)

It occurs to me that the coax cables could also be glued to the heat pipes, which ought to prevent cold spots.

Joe Gwinn

Well, they talk about highly mobile surface molecules--that's liquid enough for me. ;) Water has a lot of weird properties, for sure.

Cheers

Phil Hobbs

Phil Hobbs snipped-for-privacy@electrooptical.net wrote in news: snipped-for-privacy@electrooptical.net:

On a 100 below planet (or moon)with shaved methane 'ice' as the 'snow', maybe enough could be accumulated to ski on. Depends on the size of the spheroid too. Less gravity would make it easier to do.

Maybe they should have tried that on the moon. That was before snowboards though. Good way to get down a crater wall.

fredag den 20. august 2021 kl. 11.18.32 UTC+2 skrev snipped-for-privacy@decadence.org:

Lasse Langwadt Christensen snipped-for-privacy@fonz.dk wrote in news: snipped-for-privacy@googlegroups.com:

That's probably what they'll do on Mars. Probably some really long slopes there. Miles...

I'd rather have a mouth full of snow.

From first principles:

At low temperature gradients having high purity in the working fluid fill is essential. else the vapour pressure will be blocked by the impure gas, or the boiling point of the impure liquid elevated above the condensation temperature.

As the gradient increases the vapour flow rate also increases, but the resistance to flow is non-linear. so at high gradients thermal resistance may increase, at extreme gradients you may even get the leidenfrost effect at the hot end which would make things even worse.

water boils at 7 degrees Celsius in a 99 percent vacuum.

How low boiling point do you need?

As long as you don't have a surface below 0 C, water will be suitable; ice, though, doesn't wick fast.