This guide indicates the current flow and pressure capabilities of a number of items, as an indicator as to when to use them in your own setups.
Fortunately, there are not to many items that can actively move gases along pipes;
- Active Vent,
- Pipe Volume Pump,
- Pipe Gas Mixer,
Pipe Rig Setups
This was done on Mars so that an independent gas supply would not be needed, and a passive to passive rig was set to ensure we had a standard pressure to compare against.
Only the Active Vent test rig did not use a Passive Vent for input.
The Pipe Volume Pump was set to the maximum of 100L for this test.
For the Pipe Gas Mixer, both inputs were connected to Passive Vents, and the mixer set to 50%/50%.
The Air Conditioner setup was more of a challenge due to the Waste pipe network trending towards ambient temperature, so if I did the test at night, I would need to set the A/C target temperature lower than if I ran the test during the day.
Since the Martian atmosphere is mostly CO2, I used those filters in the Filtration Unit but just had the Unfiltered output dump to a Passive Vent.
The Electrolyzer didn’t have an H2O input, so this test might be redundant, in that if it actually splits the input to O2 and Volatiles, what output pressures are produced?
I also only ran the items for 1 minute, because the Active Vent would over-pressure if I ran it for much longer.
The results are:
- Active Vent = 2.90MPa
- Pipe Volume Pipe @ 100L = 62.5kPa
- Pipe Gas Mixer @ 50/50 = 197.6kPa
- Air Conditioner = 118.8kPa
- Filtration = 125.0kPa
- Eloctrolyzer = 131.8kPa
Additional results are:
- Pipe Volume Pipe @ 10L = 6.4kPa
- Pipe Volume Pipe @ 50L = 32.5kPa
- Pipe Gas Mixer @ 100/0 = 89.1kPa
- Pipe Gas Mixer @ 75/25 = 148.0kPa
- Pipe Gas Mixer @ 0/100 = 88.5kPa
- Electrolyzer @ 7.71MPa H2O = 18MPa for the original rig before the canister blew just before the minute was up.
- Electrolyzer @ 7.71MPa H2O = 839.2kPa going to a small tank.
For atmosphere to pipe flow, nothing beats the Active Vent. It’s default setting is considerably high, most likely to ensure that the standard airlock configuration does not take too long to fill or empty.
The Electrolyzer seems to convert H2O to O2 and H very quickly, but these tests did not indicate if that id affected by the input water pressure.
Any other relevant information gleaned from comments and other tests will be added when needed.