WEBVTT - How Do Submarines Work?

0:00:00.800 --> 0:00:10.360
<v Speaker 1>Welcome to brain stuff These podcast. Hi Martiall brain A

0:00:10.480 --> 0:00:14.200
<v Speaker 1>submarine is a big, sealed tube that contains lots of

0:00:14.240 --> 0:00:17.759
<v Speaker 1>people and a limited air supply. Three things have to

0:00:17.800 --> 0:00:21.560
<v Speaker 1>happen to keep the air breathable. First, oxygen has to

0:00:21.560 --> 0:00:25.600
<v Speaker 1>be replenished as it's consumed. People suffocate if the percentage

0:00:25.640 --> 0:00:29.280
<v Speaker 1>of oxygen in the air falls too low. Second, carbon

0:00:29.320 --> 0:00:32.920
<v Speaker 1>dioxide must be removed from the air. Third, the moisture

0:00:32.960 --> 0:00:36.000
<v Speaker 1>that we exhale in our breath must be removed. Most

0:00:36.040 --> 0:00:39.440
<v Speaker 1>of the oxygen comes from an oxygen generator, which creates

0:00:39.479 --> 0:00:44.040
<v Speaker 1>oxygen from the electrolysis of water. In an emergency, oxygen

0:00:44.080 --> 0:00:47.120
<v Speaker 1>can also come from pressurized tanks or some sort of

0:00:47.159 --> 0:00:51.239
<v Speaker 1>oxygen canister. Carbon dioxide can be removed from the air

0:00:51.360 --> 0:00:55.280
<v Speaker 1>chemically using soda line. The carbon dioxide is trapped in

0:00:55.280 --> 0:00:58.680
<v Speaker 1>the soda line by a chemical reaction. The moisture can

0:00:58.720 --> 0:01:01.480
<v Speaker 1>be removed by a d human to fire. This prevents

0:01:01.520 --> 0:01:04.840
<v Speaker 1>it from condensing inside the ship. For more on this

0:01:05.040 --> 0:01:07.400
<v Speaker 1>and thousands of other topics, go to how stuff works

0:01:07.400 --> 0:01:10.120
<v Speaker 1>dot com. M