Comment on I hacked mars!
gandalf_der_12te@discuss.tchncs.de 1 week ago
seriously though, any serious attempt to live on mars would obviously use electrolysis of water to produce oxygen on mars, because to do so you only need electricity and water.
and about how to get electricity, see my post here
and about how to get water, see my post here and this article.
and then you could produce O2, which you’re gonna breathe in, and you’re gonna exhale CO2, which you then need to remove from the atmosphere, which you can do with a CO2 scrubber
Tlaloc_Temporal@lemmy.ca 1 week ago
1kg of oxygen is a good estimate, humand need 0.5-1kg per day.
Astronaut calorie budges is a bit higher than average, as would be for labouring humans. About 3000kcal, or 12 MJ.
I think more important than the raw energy and oxygen is sourcing the water, cleaning the water, producing the energy to electrolyse and heat, and maintaining the equipment necessary to do so. And that’s assuming all food is shipped in.
gandalf_der_12te@discuss.tchncs.de 1 week ago
yeah i actually believe that too. i calculated somewhere that it takes around 10 kWh per kg of water extracted from the soil, assuming you follow this process and assuming a 30% water content in the regolith.
So yes, total energy consumption is a bit higher, but it’s only a rough estimate to give you an idea of the order of magnitude that we’re talking about.
Also i wrote about food production here.