Timeline for How would mermaids collect oxygen for their underwater cities?
Current License: CC BY-SA 4.0
7 events
| when toggle format | what | by | license | comment | |
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| Dec 27, 2020 at 0:49 | comment | added | user2352714 | Wouldn't this just make pure oxygen, which above a certain point is kind of toxic to organisms? | |
| Dec 26, 2020 at 19:22 | comment | added | JANXOL | @Willk Bear in mind that increased pressure also increases the UFL threshold. This would also be extremely touchy with regards to any fluctuation in oxygen content, as people will be breathing it. Potentially even having one less person in the room than you're pumping oxygen for would bring the room into flammability threshold. | |
| Dec 24, 2020 at 17:38 | comment | added | Willk | This solution kills 2 birds with one stone. Electrolysis yields the O2 and the H2 in separate vessels. Pressurized nitrogen causes nitrogen nacrosis. Hydrogen would be a safe substitute. Your visitors would be breathing mostly pressurized hydrogen. Only a little oxygen would be added back. I think 95% H2 and 5% O2 (at pressure so humans would not need full 25% O2) would not be an explosion risk either because of the excess of H2; that is how methane works. | |
| Dec 24, 2020 at 10:15 | comment | added | Trioxidane | @Johnny you run into these problems with all solutions. Where do you get the power to pump down oxygen in large quantities? Air in water is quite strong. How do you release oxygen in the right amounts and refresh your chamber over time? Don't your mermaids need surface oxygen, as they require lungs to talk? | |
| Dec 24, 2020 at 6:52 | comment | added | Johnny | Hey again @PcMan . The bigger concern is whether they can electrolyse that much water prior to the 20th century. Maybe they have giant electric eels or something...? I don't know how much electricity it takes per ml of water to electrolyse. | |
| Dec 24, 2020 at 6:22 | comment | added | PcMan | True. you would need to electrolyse almost 900ml of water per day, per person. That's 3 cups of water. I hope they don't run out of water! | |
| Dec 24, 2020 at 4:30 | history | answered | H98 | CC BY-SA 4.0 |