What rate does 1 tile of open space vent gas?

[Yunru]

As in the title. My computer's cooling's borked or I'd test myself.

Interested to see if I could do a self-cooling base where oxygen perpetually rises through the base before venting into space.

[JonnyMonroe]

Depends on the pressure difference.

[Yunru]

why? Does it remove it everything every x ticks, rather than x per tick?

[Sevio]

@Yunru As said above, but perhaps a closer explanation: Any gas or liquid spreading into a tile of space is deleted instantly. How fast that happens depends on the neighboring tiles. Low pressure tiles next to space spread only a little every second, high pressure tiles will spread a lot.

If you want to cool your base by venting excess material into space, simply venting room temperature oxygen won't work though. You have to put more (as much as possible) heat energy into the material that you vent into space. The most effective way to do that is boiling polluted water (or with lack of that, normal water) into steam with an aquatuner and venting the steam.

Polluted water has the highest heat capacity in the game and just the act of boiling it will already delete a lot of heat because the steam that comes out will have lower heat capacity. So an aquatuner system that boils polluted water actually requires heating from your base to keep running.

[Yunru]

Hmmm... that might actually work better than I planned then.

Does ONI have it where hot gases rise, or...?

[PhailRaptor]

1 minute ago, Yunru said:

Hmmm... that might actually work better than I planned then.

Does ONI have it where hot gases rise, or...?

If I understood correctly, the fluid itself doesn't rise, but thermal energy is biased to move upwards whenever possible.

[Sevio]

1 minute ago, Yunru said:

Hmmm... that might actually work better than I planned then.

Does ONI have it where hot gases rise, or...?

ONI has a simplified model of convection in gases and liquids. If there is hot liquid/gas below the same type of cold liquid/gas, the hot and cold will tend to equalize quickly, but it if hot is above cold, it will equalize much slower, especially in gases.

(actually the temperatures will swap places if hot is below cold but that only becomes visible with extreme temperature differences within the liquid or gas and stutterstepping the simulation at 1x speed)

[BlueLance]

From what I have observed it slowly is depleted and it spreads. 

[Sevio]

Interesting, I always thought space (like void) would be instantly deleting any element. From some quick testing it appears the rate of depletion is 20 g/tick per tile. (100 g/s per tile) A single gas pump can get 4 tiles of open space to 2 kg, at 5 it can keep it from draining but 6 tiles will drain to vacuum.

For liquids, the rate of depletion is 20 kg/tick per tile. (100 kg/s per tile)

[BlueLance]

1 minute ago, Sevio said:

Interesting, I always thought space (like void) would be instantly deleting any element. From some quick testing it appears the rate of depletion is 100 g/s per tile. A single gas pump can get 4 tiles of open space to 2 kg, at 5 it can keep it from draining but 6 tiles will drain to vacuum.

For liquids, the rate of depletion is 20 kg/s per tile.

You would think that, but it doesnt XD I don't know if it is to do with how slowly gasses move or some other reason, for instance if a comet pops open an area with polluted oxygen it just slowly tried to fill the void until the void consumes it all.

[Sevio]

@BlueLance I don't think it has anything directly to do with gas spreading. If you enclose a 1x1 tile of space and paint 5 kg of oxygen there, you can see it draining in exact steps of 20 g per game tick. But if there's only one hole for the gas to get through to space, then that hole will limit how fast the enclosed area can be drained.