Hi there. Just wanted to let you know I’m still working on this project.
Work on the project today:
- No update yesterday due to technical difficulties with the web host.
- Added more to the Atmospheric Pressure and Composition page. Finished the Humidity and Temperature section as well as the Carbon Dioxide section. I also finished the Density of oxygen, and nitrogen section. What a bummer.
- I don’t think I need to do a bounding graph now. The answer is pretty clear to me.
- A 100% oxygen atmosphere is too dangerous (health and fire risks) so it’s out.
- We might as well use nitrogen as the diluent gas. All the other possible gases are just as rare on Luna and come with their own problems.
- The oxygen concentration must not exceed 21% (what we have here on Earth) because the concentration levels are the primary driver for fire risk. The Skylab mix (74% oxygen) is still too risky, especially for long-term use.
- The one standard atmosphere and the High altitude mixes present basically the same health and fire risks. Most of us are more comfortable at sea level but millions of humans have been born, lived, and died in the High altitude mix. The High altitude mix presents slightly less of a fire risk. Logistically, our Homesteaders will have to import 31% less nitrogen if they use the High altitude mix. The lower pressure also means that they will lose a little less due to leakage.
- The High altitude mix is what I’m going to go with. I just have to finish writing the One Standard Lunar Homestead Atmosphere section.
- I also realize that Humans like choices. So I’m going to design the habitat to operate between the High altitude mix and the one standard atmosphere mix. That way our Homesteaders can tailor their breathing gas to meet their individual needs. The extra cost of more nitrogen might be worth it to them.