Gas separation via Condenser, possible?

[Gfurst]

Just food for thought, but here I was thinking of more interesting ways to make gas filtering possible, and watched that video on realistic gas filtration by phase change.

But now something has popped into my head, but what about using the actual condenser for separation of a main line, given that you could theoretically set different pressures for each gas, what happens to the condenser when it has a mix of gases on the input.

Of course I would imagine the need to have a base coolant, perhaps even water as steam from a evaporation chamber.

Would that work the I'm thinking? It all depends on how the conden/evaporation chambers work with a mix of gases.

[Alizia Kaline]

Of course it's possible. It was discussed a few ago on this post : https://steamcommunity.com/app/544550/discussions/0/7119694643866277770/

[Gfurst]

Originally posted by Alizia Kaline:

Of course it's possible. It was discussed a few ago on this post : https://steamcommunity.com/app/544550/discussions/0/7119694643866277770/

Thanks but what I suggested isn't mentioned in the thread, but I will ask there too.

[Lugard]

Cows are Evil recently made a Getting started on Mars video for phase change and he used it instead of any filters by condensing all the gasses that he didn't want from the mars atmosphere.
Cold night air -> -80c removed CO2 and X at the correct pressure and left N2 and O2 (for breathing indoor and cooling).
Day/Indoor air -> +20c removed only X, so it gave him a decent source of C02 and a little bit of N2 and O2 (to add enough CO2 if needed for the plants indoor in bursts).
The night air example pretty much confirms that mixed gasses is no issue, as long as the pressure and temperatures are right for each gas.

It's actually what made me play again because I finally understood the potentials.

The only thing that makes me a bit hesitant to make a full filtration system for my furnace waste gasses is because it needs to be cooled down a lot before it can be condensed. Filters are just a bit more responsive.

Though storing my gasses as Pure ice was pretty neat (it does some rounding things though so you might loose some gas in the process).

[Gfurst]

Originally posted by Lugard:

Cows are Evil recently made a Getting started on Mars video for phase change and he used it instead of any filters by condensing all the gasses that he didn't want from the mars atmosphere.

Just watched that, and while it was fun, that's pretty damn easy, I even did it myself on my Moon base, but instead getting rid of pollutants while pressurising my first base's air supply (I even used a solid generator initially to get me filled on CO2).

Also this wasn't what I meant either, I was wondering filling up the actual condensation chamber with a mix of gases. And that I think causes trouble if you don't prepare for a range of temperature change.

Currently I'm doing the same on my furnace exhaust gas, pollutants will start to condense into a chamber and further remove heat from the system speeding up the process.

[Alizia Kaline]

Originally posted by Gfurst:

Also this wasn't what I meant either, I was wondering filling up the actual condensation chamber with a mix of gases. And that I think causes trouble if you don't prepare for a range of temperature change.

I have no idea what would happen here. But I don't see why it wouldn't work. You would need to control the pressure setting in function of the in-chamber temperature, which will be affected by the condensation. It won't be easy. It would also requires that the mix gas don't have the same pressure range to condensate...

Really more complex than just make it condensate by lowering the temperature.

[Gfurst]

Originally posted by Alizia Kaline:

I have no idea what would happen here. But I don't see why it wouldn't work. You would need to control the pressure setting in function of the in-chamber temperature, which will be affected by the condensation.

Really more complex than just make it condensate by lowering the temperature.

If I'm understanding it right, actually it would not, if you work a mix of gas on the input and only one gas condensates out, the other gasses would get trapped in the chamber (so that pressure builds up).

Or you would actually do it by steps like in the pipe system, except you will be using only one condensation chamber and all gases will come out the same liquid pipe, but at different times if that makes sense.