I made something like you did here and it works fine. I have a night-time medium fan sucking in 127c Vulcan night air. Some will go to a filtration to filter out CO2 into a tank and the rest is being condensed (pollutant is the only thing that condenses), which is stored in two inline tanks and then a purge valve to keep it all under 4000 kPa. This is all outside. The condensed pollutant is cooling the CO2 to around 55-60c. But the "cool" pollutant is also going inside and being purged into gas and then compressed again to liquify. The heat from the condensed liquid, which is on the gas, is then going into a heat-exchanger with the "original" pollutant as a liquid. Which then cool the gas a bit (it's usual around 70c). And it's also hooked up on a AC (coolant side). When I inject the 55-60c CO2 into the base, the AC will transfer the heat from that into the Pollutant gas in the 2nd stage, which then transfers it to the first stage, where it bleeds off during the night. Works like a charm.
Good idea! For my Vulcan series, I switched over to a closed loop system with two stages that can reduce below 20C. But requires a bit of hardware and prep time to get running.
Stationeers doesn't have adiabatic phase change. What the pressure regulator does is, due to a heightened pressure produced by the gas, the temperature at which it will condense into a liquid increases, passing the barrier of what the gas is currently at, causing it to condense, in the process moving the latent heat of condensation to the gas, increasing its pressure as well as temperature.
Great introductory video the phase change mechanics. Well done! The only question I have is why you decided to throttle the purge valve in the first loop? Why set it to 3000 instead of the lowest possible setting of 1820 or 1850 (barely abvove freezing temp for pollutant)?
I played around with the setting and didn't seem to make a difference. Far as I can tell, phase change cooling (at scale, not talking about a few moles) only provides about 60C delta. And I have yet to see a video of using phase change on Vulcan to go from 127C to 20C with a single stage. Either 2+ stages are used or a single stage using phase change and the second stage using a AC device.
The system works both ways - it really just moves heat from one side of the network to the other. The thing is: the heat still has to come from somewhere, if you add a load. You need to connect the cold liquid pipe to some form of heat source. For heating with Pollutant, you would set the purge valve to 1850kpa (barely above freezing pressure) and add a heat exchanger to the liquid side connected to a heat source that must be above -99° Celsius. So, this would not work with outside air in Europa - the outside air would freeze the pollutant in the liquid pipe. Keep in mind that the temperature difference of about 80° (maximum achievable temperature delta for Pollutant arrived by dividing the latent heat of the gas by the specific heat = 80) still applies. So, if your heat source is only at -80° Celsius the maximum heating you can achieve with a single loop would be 0° Celsius on the hot gas side.
Great video! I finally started to understand the phase change in the game better.
I made something like you did here and it works fine. I have a night-time medium fan sucking in 127c Vulcan night air. Some will go to a filtration to filter out CO2 into a tank and the rest is being condensed (pollutant is the only thing that condenses), which is stored in two inline tanks and then a purge valve to keep it all under 4000 kPa. This is all outside. The condensed pollutant is cooling the CO2 to around 55-60c. But the "cool" pollutant is also going inside and being purged into gas and then compressed again to liquify. The heat from the condensed liquid, which is on the gas, is then going into a heat-exchanger with the "original" pollutant as a liquid. Which then cool the gas a bit (it's usual around 70c). And it's also hooked up on a AC (coolant side). When I inject the 55-60c CO2 into the base, the AC will transfer the heat from that into the Pollutant gas in the 2nd stage, which then transfers it to the first stage, where it bleeds off during the night. Works like a charm.
Good idea! For my Vulcan series, I switched over to a closed loop system with two stages that can reduce below 20C. But requires a bit of hardware and prep time to get running.
@@VenusianGamer Do you remember which episode you set that up ?
The construction process started in EP19 and goes on for a few more to get it all done and up and running...
Great video, I finally start to understand how this should be build 😀
Stationeers doesn't have adiabatic phase change. What the pressure regulator does is, due to a heightened pressure produced by the gas, the temperature at which it will condense into a liquid increases, passing the barrier of what the gas is currently at, causing it to condense, in the process moving the latent heat of condensation to the gas, increasing its pressure as well as temperature.
Great introductory video the phase change mechanics. Well done! The only question I have is why you decided to throttle the purge valve in the first loop? Why set it to 3000 instead of the lowest possible setting of 1820 or 1850 (barely abvove freezing temp for pollutant)?
I played around with the setting and didn't seem to make a difference. Far as I can tell, phase change cooling (at scale, not talking about a few moles) only provides about 60C delta. And I have yet to see a video of using phase change on Vulcan to go from 127C to 20C with a single stage. Either 2+ stages are used or a single stage using phase change and the second stage using a AC device.
Can this be reversed to heat instead of cooling ?
The system works both ways - it really just moves heat from one side of the network to the other. The thing is: the heat still has to come from somewhere, if you add a load. You need to connect the cold liquid pipe to some form of heat source. For heating with Pollutant, you would set the purge valve to 1850kpa (barely above freezing pressure) and add a heat exchanger to the liquid side connected to a heat source that must be above -99° Celsius. So, this would not work with outside air in Europa - the outside air would freeze the pollutant in the liquid pipe. Keep in mind that the temperature difference of about 80° (maximum achievable temperature delta for Pollutant arrived by dividing the latent heat of the gas by the specific heat = 80) still applies. So, if your heat source is only at -80° Celsius the maximum heating you can achieve with a single loop would be 0° Celsius on the hot gas side.