Oxygen change ?

[Solus The Immortal]

i have pure O2 in my suit tank and it damages my lungs after about 5 mins. was this a change ?

[h_LordEC[no-VC]]

No, something else is causing the damage.

What temp is the O2?
Do you have good CO2 filters?
Is your waste tank full?
Have you opened your visor/helmet in a toxic environment?

[Solus The Immortal]

Originally posted by h_LordECno-VC:

No, something else is causing the damage.

What temp is the O2?
Do you have good CO2 filters?
Is your waste tank full?
Have you opened your visor/helmet in a toxic environment?

not that im aware of my filters are new

[JeanDeaux]

You're not playing a Zrilian are you? If not, chances are the temp of your supply O2 is probably too extreme. Needs to be around 20°C

[Solus The Immortal]

Originally posted by JeanDeaux:

You're not playing a Zrilian are you? If not, chances are the temp of your supply O2 is probably too extreme. Needs to be around 20°C

https://steamcommunity.com/sharedfiles/filedetails/?id=3139817931
nope human i have a bit on N in there but not alot

[Starshard0]

If you have any amount of nitrogen in your suit supply, you need a nitrogen filter in your suit otherwise it will build up and suffocate you.

[КрендельФигов]

I had exactly the same experience when I filled my ice crusher with oxygenated ice chunks. It still contains some nitrogen.
Everything is as Starshard0 wrote, I added a nitrogen filter and this problem disappeared.

[Solus The Immortal]

which is strange Real life earth atmo is Nitrogen (about 78%) Oxygen (about 21%) Argon (about 0.9%) Carbon dioxide (about 0.04%)

[Alizia Kaline]

Originally posted by Solus The Immortal:

which is strange Real life earth atmo is Nitrogen (about 78%) Oxygen (about 21%) Argon (about 0.9%) Carbon dioxide (about 0.04%)

The important % here is O2. The problem is not the presence of Nitrogen, but the fact that it will never leave alone your combinaison and accumulate. Oxygen will represent less and less %.

I recommand you to filter Nitrogen out and use pure O2. Like this you only need CO2 filter.

[JeanDeaux]

So there's real life, and there's what they've programmed.

In this game, your character breathes Oxygen, and only oxygen. Your suit is a sealed environment, to which you breath in Oxygen and expel Carbon Dioxide. We'll skip the part about temperature control to keep this example simple, so any filters you have inserted into your suit remove that type of gas into your waste tank.

O2 isn't removed from your suit since you don't use an O2 filter, your breathing removes O2 from the suit. The O2 you body removes is replaced with CO2. The filters then take that produced CO2 and move it to the waste tank. Now your suit has room for more gas to come in, so what ever gas is in your supply tank enters into your suit.

Since your supply tank contains Nitrogen, it starts to take up space within your suit. Since you don't breath it in, it stays within your suit since you don't have any filters to remove it (again, this is programming and not real world stuff). With each breath, your suit becomes more and more saturated with Nitrogen that has no place to go until it finally fills your suit completely and leaves no more room for new Oxygen to enter. It's at this point you start to suffocate because there isn't any more Oxygen getting into your suit and despite having suite pressure and temperature, there's just nothing left for you to breath.

This will also eventually happen to you in a greenhouse if you didn't have plants producing oxygen. Your breathing will only consume the Oxygen and produce CO2, there is much more area for gasses to accumulate in a building, so your O2 supply is expected to last much longer, but without a fresh O2 supply you will eventually run out of breathable air.

To fix your suit issues, flush the suit as this happens to make room for a fresh load of supply gas from your tank; this starts the process cycle all over again and will again eventually lead to suffocation unless you remove the Nitrogen from your suit environment by either adding Nitrogen filters or getting a supply tank that is pure O2 so you don't need the filters.

Hope this better explains what is happening with your suit.

[Lugard]

This post is pure nostalgia for me, I've done all the above mistakes (including the Zrilian one). But yeah, it sounds like N2 was 100% of the suite atmo (eventually).

[G-Man]

It's a very easy mistake to make especially since oxite contains a bit of nitrogen. The stationpedia even covers this in its EVA suit guide.

[delerium76]

Originally posted by JeanDeaux:

So there's real life, and there's what they've programmed.

In this game, your character breathes Oxygen, and only oxygen. Your suit is a sealed environment, to which you breath in Oxygen and expel Carbon Dioxide. We'll skip the part about temperature control to keep this example simple, so any filters you have inserted into your suit remove that type of gas into your waste tank.

O2 isn't removed from your suit since you don't use an O2 filter, your breathing removes O2 from the suit. The O2 you body removes is replaced with CO2. The filters then take that produced CO2 and move it to the waste tank. Now your suit has room for more gas to come in, so what ever gas is in your supply tank enters into your suit.

Since your supply tank contains Nitrogen, it starts to take up space within your suit. Since you don't breath it in, it stays within your suit since you don't have any filters to remove it (again, this is programming and not real world stuff). With each breath, your suit becomes more and more saturated with Nitrogen that has no place to go until it finally fills your suit completely and leaves no more room for new Oxygen to enter. It's at this point you start to suffocate because there isn't any more Oxygen getting into your suit and despite having suite pressure and temperature, there's just nothing left for you to breath.

This will also eventually happen to you in a greenhouse if you didn't have plants producing oxygen. Your breathing will only consume the Oxygen and produce CO2, there is much more area for gasses to accumulate in a building, so your O2 supply is expected to last much longer, but without a fresh O2 supply you will eventually run out of breathable air.

To fix your suit issues, flush the suit as this happens to make room for a fresh load of supply gas from your tank; this starts the process cycle all over again and will again eventually lead to suffocation unless you remove the Nitrogen from your suit environment by either adding Nitrogen filters or getting a supply tank that is pure O2 so you don't need the filters.

Hope this better explains what is happening with your suit.

This sounds like "game stuff" but it's actually how things would work in real life. We humans breathe in "air" from earth which is 78% nitrogen, 21% oxygen, and 1% argon approximately. But in space, all of that is contained in a suit with limited space. The thing is, our lungs only process the oxygen (and only some of it, as a good deal also gets exhaled. We don't exhale pure carbon dioxide or anywhere close to it) so all of that nitrogen that doesn't get processed by our lungs just gets exhaled. If your suit is constantly pumping in a nitrogen and oxygen mix, and your lungs are only processing the oxygen to CO2, then when the CO2 filters pull the CO2 out of the suit, the nitrogen stays and builds up. The simulation isn't "game stuff", it attempts to simulate reality.

[Arran Chace]

Originally posted by delerium76:

Originally posted by JeanDeaux:

So there's real life, and there's what they've programmed.

In this game, your character breathes Oxygen, and only oxygen. Your suit is a sealed environment, to which you breath in Oxygen and expel Carbon Dioxide. We'll skip the part about temperature control to keep this example simple, so any filters you have inserted into your suit remove that type of gas into your waste tank.

O2 isn't removed from your suit since you don't use an O2 filter, your breathing removes O2 from the suit. The O2 you body removes is replaced with CO2. The filters then take that produced CO2 and move it to the waste tank. Now your suit has room for more gas to come in, so what ever gas is in your supply tank enters into your suit.

Since your supply tank contains Nitrogen, it starts to take up space within your suit. Since you don't breath it in, it stays within your suit since you don't have any filters to remove it (again, this is programming and not real world stuff). With each breath, your suit becomes more and more saturated with Nitrogen that has no place to go until it finally fills your suit completely and leaves no more room for new Oxygen to enter. It's at this point you start to suffocate because there isn't any more Oxygen getting into your suit and despite having suite pressure and temperature, there's just nothing left for you to breath.

This will also eventually happen to you in a greenhouse if you didn't have plants producing oxygen. Your breathing will only consume the Oxygen and produce CO2, there is much more area for gasses to accumulate in a building, so your O2 supply is expected to last much longer, but without a fresh O2 supply you will eventually run out of breathable air.

To fix your suit issues, flush the suit as this happens to make room for a fresh load of supply gas from your tank; this starts the process cycle all over again and will again eventually lead to suffocation unless you remove the Nitrogen from your suit environment by either adding Nitrogen filters or getting a supply tank that is pure O2 so you don't need the filters.

Hope this better explains what is happening with your suit.

This sounds like "game stuff" but it's actually how things would work in real life. We humans breathe in "air" from earth which is 78% nitrogen, 21% oxygen, and 1% argon approximately. But in space, all of that is contained in a suit with limited space. The thing is, our lungs only process the oxygen (and only some of it, as a good deal also gets exhaled. We don't exhale pure carbon dioxide or anywhere close to it) so all of that nitrogen that doesn't get processed by our lungs just gets exhaled. If your suit is constantly pumping in a nitrogen and oxygen mix, and your lungs are only processing the oxygen to CO2, then when the CO2 filters pull the CO2 out of the suit, the nitrogen stays and builds up. The simulation isn't "game stuff", it attempts to simulate reality.

I always thought in RL pure oxygen in limited enclosed environments (scuba gear/spacesuits etc) was used for this exact reason

[delerium76]

Originally posted by Arran Chace:

Originally posted by delerium76:

This sounds like "game stuff" but it's actually how things would work in real life. We humans breathe in "air" from earth which is 78% nitrogen, 21% oxygen, and 1% argon approximately. But in space, all of that is contained in a suit with limited space. The thing is, our lungs only process the oxygen (and only some of it, as a good deal also gets exhaled. We don't exhale pure carbon dioxide or anywhere close to it) so all of that nitrogen that doesn't get processed by our lungs just gets exhaled. If your suit is constantly pumping in a nitrogen and oxygen mix, and your lungs are only processing the oxygen to CO2, then when the CO2 filters pull the CO2 out of the suit, the nitrogen stays and builds up. The simulation isn't "game stuff", it attempts to simulate reality.

I always thought in RL pure oxygen in limited enclosed environments (scuba gear/spacesuits etc) was used for this exact reason

From my research on the subject, there's lots of reasons we use pure oxy.

With scuba gear, it's used to prevent "the bends." The bends is usually a result of divers breathing compressed air, returning to the surface too quickly. This causes small nitrogen bubbles to form in the blood, joints, and more dangerously, the spinal cord.

With space suits, we use pure oxygen at low pressure (~0.2 ATM) because it's easier to transport in liquid form, doesn't require mixing, and humans tolerate it just fine. There's no need for complex mechanical mixing of gases and all the ways that can go wrong. We do also filter out CO2 from the suit with lithium hydroxide canisters.

[Lystent]

Originally posted by Lugard:

This post is pure nostalgia for me, I've done all the above mistakes (including the Zrilian one). But yeah, it sounds like N2 was 100% of the suite atmo (eventually).

I've been there before too. Lucky for me, I connected the dots in short order. (Why am I low on oxygen? Oh, right, I diluted it with nitrogen and it is just building up. Maybe I could swap a CO2 filter with a nitrogen filter? Huh, so that is how the filters work.)

Originally posted by JeanDeaux:

...O2 isn't removed from your suit since you don't use an O2 filter, ...

Am I the only one who sees the potential to misread O2 as CO2? Imagine loading up on O2 filters on accident, or even setting up a prank suit for a friend...