[Liftyee]

Isn't liquid oxygen cryogenic (boils at -183C)? The engineering of keeping that ...there... gets interesting fast, especially when dealing with all the cold (absorbed heat from expanding gas) and containing the pressure while also releasing oxygen slowly.

[estimator7292]

The oxygen gas is dissolved into a different liquid, some kind of perfluorate in this case. You can put more oxygen molecules in a given volume when dissolved in a liquid than if you just compress the gas.

[o11c]

Um yeah don't use liquid oxygen.

But oxygen dissolved or otherwise absorbed in a material is fair game. Even without anything fancy, water can contain about 1% free oxygen, which is 8x what you could do with gaseous oxygen (which is in turn 5x what atmospheric mixture has).

And there are a lot of chemical reactions that can produce oxygen much better than 1%. The trick is going to be avoiding heat changes.

[hobs]

There's a lot of water so as long as my anal cooling fins project into the cooling fluid it sounds like I'll be down there for hours.

[jcgrillo]

> Um yeah don't use liquid oxygen.

You could probably do it once..

[whycome]

Watch the abyss. The mouse!