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Basics of Atmos: Difference between revisions

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Atmospheric Science refers to the observation and processing of gases in enclosed spaces. [[Atmospheric Technician|Atmospheric Technicians]] are concerned with maintaining a safe atmosphere in the station by:
{{Rewrite|todo=Details, details, details. Someone from #atmos-thread, please!}}
# Setting up the station's gas distribution system, or "distro," to supply the station with breathable air.
# Using handheld gas analyzers and fixed air alarm systems to monitor levels of both safe and hazardous gases.
# Utilizing holofan projectors and inflatable walls to cordon off hull breaches or gas leaks.
# Moving and placing portable scrubbers to manually filter the air in case of escaped gases.


==The Basics of Atmos==
= The Basics of Atmos =
The premise of Atmospherics (or, Atmos) is simple: You want a station that is pressurized and with breathable air, absent of any toxins. The two primary gases used to accomplish that goal are Nitrogen (N2) and Oxygen (O2).
Atmos seems complicated on it's surface, but it's easier to understand once you learn the terms and how gases work.
Oxygen is the breathable gas in air, and is respirated by [[Playable Species#Human|Humans]], [[Playable Species#Oni|Onis]], [[Playable Species#Felinid|Felinids]], [[Playable Species#Arachnid|Arachnids]], [[Playable Species#Moth|Moths]], [[Playable Species#Vulpkanin|Vulpkanins]], and [[Playable Species#Harpy|Harpies]] to form Carbon Dioxide (CO2) as a waste gas. Nitrogen, on the other hand, is respirated by [[Playable Species#Slime|Slimes]] instead of Oxygen.


Pressure, measured in kPa, is determined by the amount of gas (in mols) in an area, and is directly related to temperature (in Kelvin or degrees Celsius); so as temperature goes up, so does the pressure. A safe pressure on the station is roughly around 80 to 140 kPa, and a safe temperature is around 20 degrees Celsius. The ideal environment for all species is 21% Oxygen and 79% Nitrogen at 101.325kPa and 20°C or 293.15K
== Pressure ==


===Toxins===
Pressure is measured in kPa (Kilopascals). A safe amount of kPa is 80-140 kPa. If kPa falls under or over that amount, most creatures will start to take barotrauma damage. Most atmos devices are set to 101.3 kPa.
''Main article: [[Gases]]''
Pressure rises as temperature rises, and lowers as temperature lowers.
Gases will always try to flow from higher pressure to lower pressure to create an equilibrium. It's important to be mindful of the pressure in a room or pipe before you open a door or unanchor a pipe.
Most atmospheric devices clog around 4500 kPa, some only clog at 9000 kPa, and some don't clog at all.


Toxic gases can bring about many forms of harm to the station, and are dangerous if left unattended because of the tendency of passengers to blindly open doors. These gases are noticeable at high concentrations, as they appear as clouds or smoke. All of these gases are filtered by the scrubber network, and they can be sucked up by [[Atmospheric_Technician#Equipment|Portable Scrubbers ]] considerably faster. To contain the spread of these gases, you’ll want to use [[Atmospheric_Technician#Equipment|Holofan Projectors]], inflatable walls or doors, and if need be, you can weld some airlocks closed to prevent entry, just make sure the gas you're dealing with is not flammable.
== Temperature ==


==Understanding the Distribution Area==
Temperature is measured in Celsius and Kelvin. A safe amount of temperature varies from species to species, the temperature a room should be is around 20°C (293.15K) as that's safe for all species.
The distribution area (or, '''Distro''') refers to the area of Atmos that contains the origin point of the air and waste networks, as well as the chambers for storing and processing the gases.
Heat and cold will always try to spread to create an equilibrium. Be mindful before you open a door or unanchor a pipe. Remember that space is naturally cold, so any spaced rooms will be very cold after you patch them up.  


A distro’s purpose is to:
== Mols ==


# Supply oxygen and nitrogen to a gas mixer which supplies air to the station.
The exact volume of gases is measured in mols. It is important to pay attention to the exact mols of gases, such as dealing with the TEG or toxic gases that have the potential to poison people.
# Filter waste and toxic gases from the station.
# Store gases in a secure area where [[Atmospheric Technician|Atmos Techs]] are able to work with them.
The distro is able to do all of these things because of the system of pipes, pumps, filters, and mixers it is outfitted with. '''Every distro does NOT require placing/altering pipes for it to function properly!'''


===Distro Annotated===
==Toxins==
A typical distro layout is shown below:
''Main article: [[Gases]]''
 
[[File:Atmosia Annotated.png|border|center]]
 
# Nitrogen holding chamber with (maybe) a nitrogen gas miner
# Oxygen holding chamber with (maybe) a oxygen gas miner
# Pump for moving nitrogen to the mixer
# Pump for moving oxygen to the mixer
# Mixer to mix nitrogen and oxygen in an appropriate ratio for the station
# Volume pump to move mixer output to the station's main distro pipe
# Main distro pipe
# Valve to shut off freezer
# Freezer to reduce air temperature in distro
# Valve to shut off heater
# Heater to increase air temperature in distro
# Main waste pipe
# Volume pump to move air into the filter banks
# Bank of filters to separate different types of gases from the waste pipe
 
===Holding Chambers===
[[File:Atmos holding chambers.png|thumb|Gas holding chambers]]
 
Holding chambers store a supply of gas for you to pump into the station when needed. Some stations come with gas miners that produce an unlimited supply of the mined gas. Walls and windows prevent gas from escaping to space; if the holding chambers are broken, then the gas inside will be lost.
 
Holding chambers may be labeled with the [[#Gases|type of gas]] that they are designed to store.
 
Use [[Pipes and vents#Pumps|pumps]] to move gases in and out of holding chambers.
 
===Mix Chamber===


[[File:Mix chamber in use.png|thumb|A mix chamber in use]]
There are many toxic gases some species (like Harpies) are hypersensitive to toxins, some species (like Voxes) are poisoned by Oxygen. It's important to not leave them unattended as not many people know what that bright green gas is on the other side of the door, and will walk in there without knowing that they will be dead in 10 secs. it's important that you use your equipment given to you to keep people out of the affected area and siphon the gases out as safely and fast as possible.


The mix chamber is an empty holding area with its own separate loop of pipes and pumps in atmospherics. The mix loop is generally marked with brown pipes and the holding chamber can usually be found close to the external hull, separated from the station by reinforced walls and windows. There will be an emergency button nearby to vent the chamber to space if you need to dump your mix in case an accident arises, or you just wish to reset the chamber for a new mix. The mix chamber is here for you to experiment with different mixes, ratios, temperatures, and pressures while combining gases.
= Pipes, Vents and Other Atmospheric Devices =


On most stations the Mix chamber will loop around to either to the distro loop, or back to the waste loop. It is generally a good practice to have your mix loop flow back into the waste loop to recycle any unspent gases. You should '''NEVER''' have the mix loop flow into distro unless you have a [[Traitor|very good reason.]] Most savvy Atmospherics Technicians physically disconnect the mix loop from distro at round start to prevent an easy sabotage target or accident from occurring later in the round.
== General Information ==
All gases can flow through the various pipes found in the game. Gas will always attempt to flow from higher pressure to lower pressure. If a gas is not in a pipe, canister, or tank, it will be in the atmosphere and will interact with other objects.


See the guide to [[Gases]] if you are interested to learn how different gases interact with each other at different temperatures and pressures.
Gas will always try to even out the pressure. For example, if a empty canister is connected to a pipe pressurized at 4500kpa, the canister will also only be pressurized to 4500kpa. If a canister pressurized at 9000kpa is connected to the same pipe, gas will flow out of the canister until a even pressure is acquired.


See the guide to [[Setting up the mix chamber]] if you want to learn how to properly and safely use the mix chamber.
If pressurized pipes get unwrenched they will dump all of their contents into the surrounding atmosphere and will, depending on the pressure level, violently blow the wrench user away. You will know if you are unwrenching a pressurized pipe if you get the message stating "A gush of air blows in your face... Maybe you should reconsider?" It is good practice to always use your gas analyzer on every pipe before unwrenching to ensure it is depressurized.


==Setting Up The Distro==
All pipes can be unwrenched to disconnect them from others. By using a welder on a unwrenched pipe segment you can deconstruct it into steel.
===Main Distro Loop===
The first step in setting up the distro is to determine which line goes to the [[Pipes_and_vents#Vents|air vents]]. It is usually colored blue to make it easily identifiable. Once you’ve identified that line, follow the pipes back to the Oxygen and Nitrogen chambers.  


Out of the chambers, there are two lines of pipes, one that goes ''into'' the chamber from a gas filter (14) and one that comes ''out'' of the chamber through a pump (3), (4). Turn these pumps on and set them to max pressure. After that, follow the pipe that leads out of the chambers and you’ll find they eventually lead to a gas mixer (5). Set it to the correct air mix (21% Oxygen to 79% Nitrogen) and pressure. If there is a pump after the mixer, you can set the pressure to 4500kPa. Otherwise, set the pressure to 200kPa
A broken or unconnected segment of pipe WILL NOT allow gas to pass through. Do not worry about all your gas escaping out of a broken or unconnected pipe segment.


Air vents will pump air from distro into the station as long as the pressure inside distro is positive. Increasing the pressure inside distro allows the air vent pumps to move air faster. Contrary to popular belief, the pressure inside '''does not''' set the pressure of air coming out of the actively pumped air vents that start connected to distro.
Most pumps, mixers, and filters do not require power to function. Only air vents and scrubbers require power. You can shift-click on a segment to examine it to see if it is powered.


Check the pressure of distro at round start and periodically throughout the shift. Low or slowly rising distro pressure at round start is a sign of <s>shoddy station quality</s> design flaws causing low flow rates into distro. Low distro pressure in the middle of the round may be indicative of spacing on the station.
== Pipes ==
Allows gas to flow freely. Comes in four shapes. Straight, Elbow, 3-way-juntion, 4-way-junction.
{| class="wikitable"
!Image
!Name
!Description
|-
|[[File:Pipe_straight.png]]
|gas pipe straight
|A straight segment of pipe.
|-
|[[File:Pipe_elbow.png]]
|gas pipe bend
|A elbow segment of pipe.
|-
|[[File:Pipe_3_way.png]]
|gas pipe T junction
|A three way junction segment of pipe.
|-
|[[File:Pipe_4_way.png]]
|gas pipe fourway
|A four way junction segment of pipe.
|}


===Waste Loop===
== Atmospheric Devices ==
Waste, or the waste loop, is usually marked with red pipes and is responsible for removing waste gas around the station via scrubbers. These pipes start and end in atmospherics and are looped around the entire station. The main purpose of the waste loop is the ensure that harmful gases get removed from the station's atmosphere. Scrubbers will remove gas from the hallways and return it to Atmospherics where it will then be separated by gas filters into various holding chambers. Harmful gases will be deposited into their assigned chambers and the breathable air will once again make its way back to Distro and into the station to continue the cycle.  
{| class="wikitable"
!Image
!Name
!Description
|-
|[[File:Gas_pump.png]]
|Gas Pump
|Pumps gas in a specific direction. Has a maximum throughput of 4500 kPa (4.5 Mpa), clogs at 4500 kPa. Loses efficiency as the volume of gas rises. Can be turned on/off to allow/disallow gas flow. Requires power.
|-
|[[File:Volumetric_gas_pump.png]]
|Volumetric Gas Pump
|Pumps gas based on the mole amount instead of pressure. Has a maximum throughput of 200 L/s, clogs at 9000 kPa (9 Mpa). best used when dealing with extremely high pressure. Requires power.
|-
|[[File:Manual_valve_closed.png]]
|Manual Valve
|Allows gas to flow to and from whatever pipes it's connected to. Can be opened (green light) or closed (red light). Doesn't require power.
|-
|[[File:Passive_gate.png]]
|Passive Gate
|An air valve that's one-way only. The red circle is the inlet part. Does not require power.
|-
|[[File:Gas_Mixer.png]]
|Gas Mixer
|Allows you to combine the gas flow of two pipes into one. Has a maximum throughput of 4500 kPa, clogs at 4500 kPa. Allows you to set the percentage of throughput of both inputs. The primary port is parallel with the output while the side port is perpendicular. If one input is missing, it will not allow gas flow.
|-
|[[File:Gas_Filter.png]]
|Gas Filter
|Filters out a selected gas into another pipeline. Has a maximum throughput of 1000 L/s, clogs at 4500 kPa. Filtered gas will exit out of the perpendicular outlet while all other gases continue to flow down the parallel outlet. The filter outlet will not allow gas flow if no gas is selected or if no pipe is connected to the filter outlet.
|-
|[[File:Air_Sensor.png]]
|Air Sensor
|Scans the atmosphere of the tile it's on, shows the information on an air alarm.
|-
|[[File:Air_alarm.png]]
|Air Alarm
|Shows information of the atmosphere in the surrounding area. Allows you to control all the air vents and scrubbers it's connected to. Requires power.
|-
|[[File:Air_vent.png]]
|Gas Vent
|Used to move gas into the surrounding atmosphere. Can store 4500 kpa but only allows 101.3 kPa to flow out of it. If external pressure is higher than the limit, no gas will flow out of the vent. If external pressure drops too much, the vent will go into under-pressure lockout (shown by the vent having yellow lights instead of blue lights) and no gas will flow out of it. You can right-click on a vent and unlock it from under-pressure lockout after you fix the area. Requires power
|-
|[[File:Duel-port_vent.png]]
|Dual-port Gas Vent
|Exactly the same as a normal gas vent, but has two input options instead of one. Requires power.
|-
|[[File:Passive_vent.png]]
|Passive Vent
|Allows any pressure and gas to flow in and out of it. Doesn't require power.
|-
|[[File:Air_Scrubber.png]]
|Air Scrubber
|Slowly siphons selected gases out of the surrounding atmosphere. You can change what gases it siphons via an air alarm. Must be connected to an outlet port to function. Glows blue when working and glows red when in panic mode. Requires power.
|-
|[[File:Air_injector.png]]
|Air Injector
|inject air into the surrounding atmosphere. Does not allow backflow. Maximum throughput is 9000 kPa, clogs at 9000 kPa. Requires power.
|-
|[[File:Pneumatic_valve.png]]
|Pneumatic Valve
|Has three ports: Control, inlet, an outlit. Allows gas flow like a manual valve, but only if the pressure at the control port is high enough. To turn it on, the control port must be at least 1 atm higher than the lowest pressure connected to the valve. I.E the lesser of the inlet and outlit pressure.
|-
|[[File:Canister.png]]
|Canister
|Used to hold and transport gas without the use of pipes. Use a wrench to connect a canister to a connector port. You can put air tanks into canister to fill them with whatever gas is in the canister.
|-
|[[File:Connector_Port.png]]
|Connector Port
|Used to transfer gas from pipes into canisters. Gas will flow into the canister until pressure evens out between the connector port and the canister. Use gas pumps to force more gas in/out of canisters.
|-
|[[File:Gas_miner.png]]
|Gas Miner
|Creates new gases from nothing, used to make sure stations have an infinite amount of a specific gas. Stations usually only come with an oxygen and nitrogen miner. Found in gas chambers in atmos.
|-
|[[File:Gas_recycler.png]]
|Gas Recycler
|Used to recycle carbon dioxide and nitrious oxide into oxygen and nitrogen, respectively. Requires power, 3000 kPa and the gas to be 300°C to work.
|-
|[[File:Condenser.png]]
|Gas Condenser
|Condenses an gas into liquid.
|-
|[[file:Radiators.png]]
|Radiator
|Used to transfer the temperature of a room to the gas in pipes.
|-
|[[File:Freezer.png]][[File:HeaterOff.png]]
|Freezer/heater
|Connected to pipe networks to heat up the gas inside. Has hellfire variants.
|-
|[[File:Portable_Scrubber.png]]
|Portable Scrubber
|Works just like an air scrubber, but you can pull it around! Anchor it down to have it filter harmful gases out of the air.
|-
|[[file:Space_Heater.png]]
|Space Heater
|A portable heater used to regulate temperatures in certain rooms. Anchor it down and click the interact button to make it work.
|}


To set it up, follow the line and configure all of the gas filters going into the chambers to the correct gas (14). At the end of the waste line you will find a passive vent going to space. All the unfiltered gas will end up in space. Make sure the valve leading to the vent is opened.
=== Design Examples ===
'''Pressure Relief Valve'''


===Gas Recycling===
[[File:Pressure_relief_system.png]]
Not all stations come with an O2 miner, '''[[Maps#Shōkō_Station|Shōkō]] in particular has no O2 gas miner''', so they require a [[Pipes_and_vents#Gas_Recycler|gas recycler]] to get Oxygen. It turns Carbon Dioxide into Oxygen and Nitrogen Oxide into Nitrogen.
It takes a bit of instruction to use, and the basic premise is as follows:
* A mix of gases that is at least 300 degrees Celsius and pressurized no less than 3000 kPa enters through the north side of the recycler, and the mix exits out the south side, with some of the carbon dioxide converted to oxygen and some of the nitrous oxide converted to nitrogen.


The recycler loop must be heated to at least 300 degrees Celsius (~575 Kelvin), after that, pressure must be at least 3000 kPa. Pressure can be added by increasing the presence of other gases (not necessarily CO2 or N2O) into the recycler loop’s pipes. Nitrogen is usually abundant and inert, so it is a good contender. Pressure in the pipes will lower as gases leave the recycler loop, so a pump is often placed at the end to regulate pressure.
This pressure relief system drains the air inside to space if the pressure exceeds 1 atm, which can be used to guard against accidental station overpressure events. A passive vent inside (1) is connected to the control and the inlet. Another passive vent in space (2) is connected to the outlet. Since the outlet pressure is 0 kPa, then the pneumatic valve will only be on if the inside pressure exceeds 1 atm. When that happens, air from inside is transferred into space until the inside pressure is equal to 1 atm.


''Note that gases that leave the recycler will remain heated, so it’s important to regulate temperature if the O2 is going to be used in station air. A freezer can be placed after the recycler loop, or after the breathable air mixer to ensure the station doesn’t burn alive.''
=== Turning Completeness ===
Pneumatic valves make [https://github.com/space-wizards/space-station-14/pull/10520 atmos turing-complete].


==Optimizing The Distro==
=Gases=
You can optimize the distro the layout to more effectively pump gases into the station. Specific steps to do so vary from station to station. Here is an example of setting up distro for the [[#Atmos Annotated|example above]]:
{{Stub}}
==Introduction==
The gases are the most important part of Atmospherics. There are currently 9 gases in the game, each of them has its own Specific Heat Capacity and Molar Mass. Most of them can be created using Gas Miners or created in combustion reactions.


# Remove (6) and replace it with a straight pipe segment. Pumps reduce gas flow rate, and when spacing occurs, (6) is typically a bottleneck when re-pressurizing the station.
==Gases==
# Set (5) to output 200 kPa. The pressure in the distro pipe influences how quickly air vents can move air from distro into the station. Setting this too low reduces the flow rate, but setting this too high could be dangerous if a [[Traitor]] replaces an air vent with a passive vent.
# Increase output pressure of (3), (4), (13) and (14) to their maximum settings.


{| class="wikitable sortable"
|+ Gases in SS14
|-
! Gas !! Description !! Specific Heat Capacity !! Molar Mass (g/mol)
|-
| Oxygen<br> [[File:Oxygen gas.png]] || Colorless, reactive gas that humans need to breathe to stay alive. Key oxidizing agent in most combustion reactions. || 20 || 32
|-
| Nitrogen<br> [[File:Nitrogen gas.png]] || Colorless, odorless, inert gas. Somehow, slimes and voxes breathe this. || 30 || 28
|-
| Carbon Dioxide<br> [[File:Carbon dioxide.png]]|| Colorless, odorless, relatively inert gas. Exhaled by creatures that breathe oxygen. Toxic in high enough quantities. The reason why atmospheric technicians are employed. || 30 || 44
|-
| Plasma<br> [[File:Plasma.png]] || Purple, putrid, highly-combustible, and toxic gas. Combusts in the presence of oxygen, but will not ignite on its own. Unfortunately, it is also vitally important to industrial and scientific activities aboard Nanotrasen stations. || 200 || 120
|-
| Tritium<br> [[File:Tritium.png]] || Green, highly-combustible, and radioactive. Combusts in the presence of oxygen. It is formed by the combustion of Oxygen and Plasma. To form Tritium, there must be 96 times more Oxygen than Plasma during the reaction. If there is too much Plasma, the reaction will produce Carbon Dioxide instead. || 10 || 6
|-
| Water Vapor<br> [[File:Water_Vapor.png]] || Water in gaseous form. Due to the unique environment of space, does not condense into liquid water. Harmful to slime people. || 40 || 18
|-
| Miasma<br> [[File:Miasma.png]] || Purple, foul-smelling gas. Breeds disease, toxic, and harmful in sufficiently large concentrations. A by-product of nasty biological processes, including rotting bodies. || 20 || 44
|-
| Nitrous Oxide<br> [[File:Nitrious_Oxide.png]] || Colorless, Otherwise known as "laughing" or "sleepy" gas, it acts as a sedative to non-slimes and is toxic in very high concentrations. Unfortunately, this stuff is exhaled by slimes. Formed from Frezon and Nitrogen || 40 || 44
|-
| Frezon<br> [[File:Frezon.png]] || Blue-greenish gas. Used as an industrial coolant. Used recreationally by some for its euphoric effects, before their lungs freeze out. It has a high value and is made by mixing cold Tritium and Oxygen. || 600 || 50
|}




{{Guides Menu}}
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Latest revision as of 13:43, 21 June 2025

This page is in the process of a rewrite!
This page is in the process of being rewriten. Some information on this page may differ from how it actually works on Delta-V. A lot of information will be incomplete or may contain placeholders.
You can help Delta-V by expanding it
To-Do: Details, details, details. Someone from #atmos-thread, please!


The Basics of Atmos

Atmos seems complicated on it's surface, but it's easier to understand once you learn the terms and how gases work.

Pressure

Pressure is measured in kPa (Kilopascals). A safe amount of kPa is 80-140 kPa. If kPa falls under or over that amount, most creatures will start to take barotrauma damage. Most atmos devices are set to 101.3 kPa. Pressure rises as temperature rises, and lowers as temperature lowers. Gases will always try to flow from higher pressure to lower pressure to create an equilibrium. It's important to be mindful of the pressure in a room or pipe before you open a door or unanchor a pipe. Most atmospheric devices clog around 4500 kPa, some only clog at 9000 kPa, and some don't clog at all.

Temperature

Temperature is measured in Celsius and Kelvin. A safe amount of temperature varies from species to species, the temperature a room should be is around 20°C (293.15K) as that's safe for all species. Heat and cold will always try to spread to create an equilibrium. Be mindful before you open a door or unanchor a pipe. Remember that space is naturally cold, so any spaced rooms will be very cold after you patch them up.

Mols

The exact volume of gases is measured in mols. It is important to pay attention to the exact mols of gases, such as dealing with the TEG or toxic gases that have the potential to poison people.

Toxins

Main article: Gases

There are many toxic gases some species (like Harpies) are hypersensitive to toxins, some species (like Voxes) are poisoned by Oxygen. It's important to not leave them unattended as not many people know what that bright green gas is on the other side of the door, and will walk in there without knowing that they will be dead in 10 secs. it's important that you use your equipment given to you to keep people out of the affected area and siphon the gases out as safely and fast as possible.

Pipes, Vents and Other Atmospheric Devices

General Information

All gases can flow through the various pipes found in the game. Gas will always attempt to flow from higher pressure to lower pressure. If a gas is not in a pipe, canister, or tank, it will be in the atmosphere and will interact with other objects.

Gas will always try to even out the pressure. For example, if a empty canister is connected to a pipe pressurized at 4500kpa, the canister will also only be pressurized to 4500kpa. If a canister pressurized at 9000kpa is connected to the same pipe, gas will flow out of the canister until a even pressure is acquired.

If pressurized pipes get unwrenched they will dump all of their contents into the surrounding atmosphere and will, depending on the pressure level, violently blow the wrench user away. You will know if you are unwrenching a pressurized pipe if you get the message stating "A gush of air blows in your face... Maybe you should reconsider?" It is good practice to always use your gas analyzer on every pipe before unwrenching to ensure it is depressurized.

All pipes can be unwrenched to disconnect them from others. By using a welder on a unwrenched pipe segment you can deconstruct it into steel.

A broken or unconnected segment of pipe WILL NOT allow gas to pass through. Do not worry about all your gas escaping out of a broken or unconnected pipe segment.

Most pumps, mixers, and filters do not require power to function. Only air vents and scrubbers require power. You can shift-click on a segment to examine it to see if it is powered.

Pipes

Allows gas to flow freely. Comes in four shapes. Straight, Elbow, 3-way-juntion, 4-way-junction.

Image Name Description
gas pipe straight A straight segment of pipe.
gas pipe bend A elbow segment of pipe.
gas pipe T junction A three way junction segment of pipe.
gas pipe fourway A four way junction segment of pipe.

Atmospheric Devices

Image Name Description
Gas Pump Pumps gas in a specific direction. Has a maximum throughput of 4500 kPa (4.5 Mpa), clogs at 4500 kPa. Loses efficiency as the volume of gas rises. Can be turned on/off to allow/disallow gas flow. Requires power.
Volumetric Gas Pump Pumps gas based on the mole amount instead of pressure. Has a maximum throughput of 200 L/s, clogs at 9000 kPa (9 Mpa). best used when dealing with extremely high pressure. Requires power.
Manual Valve Allows gas to flow to and from whatever pipes it's connected to. Can be opened (green light) or closed (red light). Doesn't require power.
Passive Gate An air valve that's one-way only. The red circle is the inlet part. Does not require power.
Gas Mixer Allows you to combine the gas flow of two pipes into one. Has a maximum throughput of 4500 kPa, clogs at 4500 kPa. Allows you to set the percentage of throughput of both inputs. The primary port is parallel with the output while the side port is perpendicular. If one input is missing, it will not allow gas flow.
Gas Filter Filters out a selected gas into another pipeline. Has a maximum throughput of 1000 L/s, clogs at 4500 kPa. Filtered gas will exit out of the perpendicular outlet while all other gases continue to flow down the parallel outlet. The filter outlet will not allow gas flow if no gas is selected or if no pipe is connected to the filter outlet.
Air Sensor Scans the atmosphere of the tile it's on, shows the information on an air alarm.
Air Alarm Shows information of the atmosphere in the surrounding area. Allows you to control all the air vents and scrubbers it's connected to. Requires power.
Gas Vent Used to move gas into the surrounding atmosphere. Can store 4500 kpa but only allows 101.3 kPa to flow out of it. If external pressure is higher than the limit, no gas will flow out of the vent. If external pressure drops too much, the vent will go into under-pressure lockout (shown by the vent having yellow lights instead of blue lights) and no gas will flow out of it. You can right-click on a vent and unlock it from under-pressure lockout after you fix the area. Requires power
Dual-port Gas Vent Exactly the same as a normal gas vent, but has two input options instead of one. Requires power.
Passive Vent Allows any pressure and gas to flow in and out of it. Doesn't require power.
Air Scrubber Slowly siphons selected gases out of the surrounding atmosphere. You can change what gases it siphons via an air alarm. Must be connected to an outlet port to function. Glows blue when working and glows red when in panic mode. Requires power.
Air Injector inject air into the surrounding atmosphere. Does not allow backflow. Maximum throughput is 9000 kPa, clogs at 9000 kPa. Requires power.
Pneumatic Valve Has three ports: Control, inlet, an outlit. Allows gas flow like a manual valve, but only if the pressure at the control port is high enough. To turn it on, the control port must be at least 1 atm higher than the lowest pressure connected to the valve. I.E the lesser of the inlet and outlit pressure.
Canister Used to hold and transport gas without the use of pipes. Use a wrench to connect a canister to a connector port. You can put air tanks into canister to fill them with whatever gas is in the canister.
Connector Port Used to transfer gas from pipes into canisters. Gas will flow into the canister until pressure evens out between the connector port and the canister. Use gas pumps to force more gas in/out of canisters.
Gas Miner Creates new gases from nothing, used to make sure stations have an infinite amount of a specific gas. Stations usually only come with an oxygen and nitrogen miner. Found in gas chambers in atmos.
Gas Recycler Used to recycle carbon dioxide and nitrious oxide into oxygen and nitrogen, respectively. Requires power, 3000 kPa and the gas to be 300°C to work.
Gas Condenser Condenses an gas into liquid.
Radiator Used to transfer the temperature of a room to the gas in pipes.
Freezer/heater Connected to pipe networks to heat up the gas inside. Has hellfire variants.
Portable Scrubber Works just like an air scrubber, but you can pull it around! Anchor it down to have it filter harmful gases out of the air.
Space Heater A portable heater used to regulate temperatures in certain rooms. Anchor it down and click the interact button to make it work.

Design Examples

Pressure Relief Valve

This pressure relief system drains the air inside to space if the pressure exceeds 1 atm, which can be used to guard against accidental station overpressure events. A passive vent inside (1) is connected to the control and the inlet. Another passive vent in space (2) is connected to the outlet. Since the outlet pressure is 0 kPa, then the pneumatic valve will only be on if the inside pressure exceeds 1 atm. When that happens, air from inside is transferred into space until the inside pressure is equal to 1 atm.

Turning Completeness

Pneumatic valves make atmos turing-complete.

Gases

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Introduction

The gases are the most important part of Atmospherics. There are currently 9 gases in the game, each of them has its own Specific Heat Capacity and Molar Mass. Most of them can be created using Gas Miners or created in combustion reactions.

Gases

Gases in SS14
Gas Description Specific Heat Capacity Molar Mass (g/mol)
Oxygen
 Colorless, reactive gas that humans need to breathe to stay alive. Key oxidizing agent in most combustion reactions. 20 32
Nitrogen
 Colorless, odorless, inert gas. Somehow, slimes and voxes breathe this. 30 28
Carbon Dioxide
 Colorless, odorless, relatively inert gas. Exhaled by creatures that breathe oxygen. Toxic in high enough quantities. The reason why atmospheric technicians are employed. 30 44
Plasma
 Purple, putrid, highly-combustible, and toxic gas. Combusts in the presence of oxygen, but will not ignite on its own. Unfortunately, it is also vitally important to industrial and scientific activities aboard Nanotrasen stations. 200 120
Tritium
 Green, highly-combustible, and radioactive. Combusts in the presence of oxygen. It is formed by the combustion of Oxygen and Plasma. To form Tritium, there must be 96 times more Oxygen than Plasma during the reaction. If there is too much Plasma, the reaction will produce Carbon Dioxide instead. 10 6
Water Vapor
 Water in gaseous form. Due to the unique environment of space, does not condense into liquid water. Harmful to slime people. 40 18
Miasma
 Purple, foul-smelling gas. Breeds disease, toxic, and harmful in sufficiently large concentrations. A by-product of nasty biological processes, including rotting bodies. 20 44
Nitrous Oxide
 Colorless, Otherwise known as "laughing" or "sleepy" gas, it acts as a sedative to non-slimes and is toxic in very high concentrations. Unfortunately, this stuff is exhaled by slimes. Formed from Frezon and Nitrogen 40 44
Frezon
 Blue-greenish gas. Used as an industrial coolant. Used recreationally by some for its euphoric effects, before their lungs freeze out. It has a high value and is made by mixing cold Tritium and Oxygen. 600 50


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