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How Do Nuclear Submarines Make Oxygen?- Smarter Every Day 251

SmarterEveryDay · 10.4M views · 2021-02-21 · 29:34

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Overview

A Smarter Every Day episode from aboard a nuclear submarine on how the crew makes breathable air. It covers oxygen generation from seawater, oxygen candles and CO2 scrubbing with amine.

On Hacker News

Go-to link when oxygen candles, CO2 capture or submarine air quality come up.

Recommended by 5 HN people across 5 months · HN mentions 2021–2026

Topics

Ships, submarines & maritimeEveryday physics & science demosChemistry
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nuclear submarineoxygen candlesco2 scrubbinglife supportelectrolysis

What people said

helsinkiandrew · 2023-08 · Recommendation

The SmarterEveryDay YouTube channel did a slightly more indepth series of videos aboard a nuclear sub, obviously still censored, but educational. [LINK] The video on producing oxygen was particularly enlightening: [VIDEO]

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rdl · 2022-05 · Recommendation

Yes, but the context of this post was emergency systems which are purely chemical. For routine operations on e.g. a submarine, [LINK] As other people have mentioned, this is a great introduction to the topic: [VIDEO]

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CharlesW · 2022-04 · Recommendation

I really enjoyed this Smarter Every Day episode that talks about maintaining air quality on a submarine: [VIDEO]

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Sources

Video by SmarterEveryDay, played through YouTube.

Data and selection notes

HN summaries and labels may contain AI errors. HN dates refer to discussions, not video publication.

HN Library: HackerTube export (2026-10-31) and open-index/hacker-news. Upstream summaries and classifications may contain AI errors.

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