Greta Jimenez
Polluted oxygen vents are considered one of the least useful vents in Oxygen Not Included. However, there are ways to cool and purify the hot, polluted oxygen they emit. One way is to use the vent's heat to power a steam turbine, which will also help to cool the vent's output. Another option is to use power or wheezeworts to cool the air, and then purify it with deodorizers. The resulting oxygen can then be skimmed off the top with a gas filter.
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What You'll Learn
Use the hot oxygen vent to produce clay
Hot polluted oxygen vents can be used to produce clay. The clay output from these vents is not very high, with one user stating that they would only be able to produce one insulated ceramic tile per day with all seven vents they had access to. However, if you are in desperate need of a clay source, it might be worth considering.
To use a hot polluted oxygen vent to produce clay, you can follow these general steps:
- Box in the vent to prevent the hot and polluted oxygen from spreading into your base.
- Deodorize the air to produce clay. You can place deodorizers directly over the vent, using airflow tiles and mesh tiles with a bit of liquid to separate the polluted oxygen from the clean oxygen released by the deodorizers.
- Optionally, you can set up a steam turbine to utilize the thermal output of the vent and help cool down the output gas. However, the thermal output may not be sufficient to generate a useful power surplus.
- Collect the produced clay and use it for your desired purposes, such as creating ceramic tiles.
It is important to note that the process of deodorizing polluted oxygen to produce clay may require additional resources, such as sand, and the use of deodorizers and other machinery may consume power. Therefore, it is essential to consider the availability of resources and the overall energy balance of the system when utilizing hot polluted oxygen vents for clay production.
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Use a steam turbine to cool down the output gas
Steam turbines are a primary device for harvesting power from heat and can be used to cool down hot, polluted oxygen vents. They draw in steam from the tiles directly below the machine's foundation and use it to generate electrical power. The steam turbine only works with steam, and the steam below the generator must be at least 125 °C/257 °F. The steam turbine is also an incredibly effective heat deletion device, capable of removing significant amounts of heat from the environment and turning it into power.
To cool down the output gas from a hot, polluted oxygen vent, a steam turbine can be used in conjunction with a thermo aquatuner in a cooling loop. The steam turbine takes in steam from the area at the bottom and, in the process, cools it down to very hot (95 °C) water, which is then fed out through the liquid output pipe. This setup can be optimised by ensuring that the cooling box for the aquatuner does not contain any oxygen or other gases, as these can interfere with the steam turbine's operation by blocking its steam input ports. It is also important to avoid getting gas pockets in the cooling tank by leaving both ends open and filling it from one side.
The output pipe of the steam turbine can be placed below the turbine itself to save space, but this may diminish its cooling capacity. The steam turbine requires a power wire connected to it to function, and it will continue to run and consume its power source unless turned off manually or by an automation connection.
To prevent the steam turbine from overheating, it is important to maintain its temperature below 100 °C/212 °F. This can be achieved by limiting the steam temperature to around 135 °C/275 °F and the power output to around 330 watts. Maximising heat transfer between the exhaust water and the steam turbine can be done by snaking radiant pipes behind the turbine, and this setup can be made even more effective by adding one or more liquid layers.
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Use the oxygen to build a slime farm
To cool and purify hot polluted oxygen from a vent, you can use power or wheezeworts. One user suggests using a steam turbine, which can be partially driven by the vent's output, to help cool things down.
Once you have cooled and purified the oxygen, it can be used to build a slime farm. Pufts and Puft Princes breathe polluted oxygen and excrete slime. This can be harvested on rocket missions to renewable Space POIs: In Organic Mass Fields at a rate of 162 kg – 486 kg per cycle.
To create a slime farm, you can collect Puft eggs and place them in the desired area. However, it is important to ensure that the container is empty, or you will end up with raw egg on the floor. One user suggests setting the container to 'Sweep Only' to prevent this.
Another user shares their slime farm design, where they used the holes that formed in the asteroid to conserve mining. They also placed a buddy bud plant by the entrance, as floral scents can prevent slimelung from creeping in. This user also shares their favourite build for pO2 generation, which involves creating a room of layered airflow tiles with pWater filled to the top to maximise the surface area for off-gassing into the airflow channels.
It is important to note that slime can be left out to sublimate into polluted oxygen, and when dug up, it will emit polluted oxygen with Slimelung germs, which can rapidly contaminate the surrounding area. Therefore, it is recommended to disinfect the slime after digging by first cleaning the area of all polluted oxygen or water, then digging the slime and storing it in a sterile environment. Chlorine is an effective way to kill these germs, and deodorizers can help capture the off-gassed polluted oxygen.
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Use the vent to produce oxylite for rockets
Dense Pufts can be used to produce oxylite for rockets. Pufts are the only renewable source of slime, and dense Pufts can turn oxygen into oxylite for rocketry without using up power and refined gold. The oxylite produced can be stored on an upper level to prevent off-gassing while in CO2 and overpressurizing the rocket.
To cool and purify a hot polluted oxygen vent, one option is to use a steam turbine to cool down the output gas. The thermal output of the vent may not be enough to generate a lot of power, but it can be used to power a steam turbine. The hot polluted oxygen vent can be combined with a steam power plant to "recycle" heat by heating water in a closed circuit. This can be used to produce clear oxygen.
Another option is to convert the polluted oxygen to liquid oxygen by cooling it down to its condensation point using thermo-regulators and then reheating it. This process is described in the "Guide/Cleaning Polluted Oxygen".
The polluted oxygen vent can also be used to produce clay. This can be done by deodorizing the air and then using the resulting clay for various purposes.
Overall, there are several ways to cool and purify a hot polluted oxygen vent and use it for producing oxylite for rockets. The specific method chosen will depend on the player's preferences and the resources available in the game.
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Seal the vent off to keep it out of your base
Sealing off the vent is a good option if you want to keep the hot, polluted oxygen out of your base, especially in the early stages of the game. This is because the oxygen is too hot to be useful within your base and could cause unwanted heating.
To seal the vent, you can build insulated tiles around it to block the flow of oxygen. This is a temporary solution until you can find a way to deal with the oxygen. One user suggests that this method worked for them, as their vent was about to be blocked naturally.
Another user recommends using a turbine to help cool things down. While this method won't produce a surplus of power, it can be useful for managing the heat produced by the vent.
Additionally, you can use the polluted oxygen for a Puft farm. Pufts eat polluted oxygen and produce slime, which can be useful for other purposes.
In the later stages of the game, you may find the polluted oxygen vent more useful. The hot oxygen can be purified and cooled down with power or wheezeworts for use within your base. Alternatively, you can use it to produce liquid polluted water.
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Frequently asked questions
You can use the heat from the vent to increase the temperature of other things. Once the vent cools down, the polluted oxygen turns to liquid, which can be used to feed reed fibre.
You can use power or wheezeworts to purify the vent.
You can use the purified oxygen to build a slime farm and skim the pure oxygen off the top with a gas filter.
The vent produces enough heat to drive one steam turbine partially, but you won't get a useful surplus of power. The vent can also be used for making clay.
You can seal it off to keep it out of your base, especially in the early game. Later, you could use it for clean oxygen or liquid polluted water.
