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• stationpedia has simple phase diagrams for all Gasses, a more complex phase change diagram can be located Here

Gas may refer to:

• Atmosphere
• Carbon Dioxide (CO₂)
• Fuel (66.6% H₂ + 33.3% O₂)
• Hydrogen (H₂)
• Nitrogen (N₂)
• Nitrous Oxide (N₂O)
• Oxygen (O₂)
• Pollutants (X)
• Volatiles
• Water (H₂O)

Gases

Name	Filter Color	Molar Heat Capacity	Latent Heat	Freezing point [K°/C°]	Boiling Point at 100KPa [K°/C°]	Minimum condensation pressure [kPa] at Temperature [K°/C°]	Max liquid temperature [K°/C°] at Pressure [kPa]
Carbon Dioxide (CO2)	Gray	28.2	0.6kJ/MOL	218K°/-55.3C°	N/A.	517kPa at 218K°/-55.3C°	265K°/-8.1C° at 6000KPa
Nitrogen (N2)	Green	20.6	0.5kJ/MOL	40k°/-233C°	75K°/-198C°	6.3kPa at 40K°/233C°	190K°/-83C° at 6000kPa
Nitrous Oxide (N2O)	Green	37.2	4kJ/MOL	252K°/-21C°	N/A	800KPa at 252K°/-21C°	431K/158C° at 2000kPa
Oxygen (O2)	White	21.1	0.8kJ/Mol	56.4K°/-217C°	90K°/-183C°	6.3kPa at 56.4K/-217 C°	162k°/-111C° at 6000kPa
Pollutant (X)	Black	24.8	2 kJ/MOL	173k°/-99.8C°	N/A	1800kPa at 173K°/-99.8C°	425K°/152C° at 6000kPa
Volatiles (H2)	Red	20.4	1kJ/MOL	81.6K°/-192C°	112K°/-162C°	6.3kPa at 81.6K°/-192C°	195K°/-78.1C° at 6000kPa
Steam (H20)	Blue	72	8kJ/MOL	273K°/0C°	373k°/100C°	6.3kPa at 273K°/0C°	643k°/370C° at 6000kPa

^{* phase change has been added to the game system and most gasses now have an associated and a pure Solids phase .}

Mixtures

Name	Contents	Tank Color	Notes
Fuel	67% H2, 33%O2	Orange	Autoignition at 300C
Air	75% N2, 25% O2	White	16kPa Partial Pressure O2 minimum is required for human player breathing. Hyperoxia is not simulated.

Simulation Mechanics

The simulation has been improved some of these Caviets are no longer true, update is required

• Partial ideal gas law (PV=nRT) is simulated.
• Fluid dynamics,are not simulated.
• Phase change has been added into the simulation
• Thermal radiation is not simulated, but vacuum atmosphere (not rooms) will absorb a fixed amount of energy per tick. The sun adds a fixed energy per tick.
• Each environment grid cube acts as a single point and each connected pipe network acts as a single point.
• Insulation is perfect/infinite.
• All pumps/mixer also act as a check valve.
• Gas stoichiometry is utilized. (i.e. Igniting 2H₂ + O₂ yields H₂O instead of expected 2H₂O)