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1,706,280 Views • Aug 1, 2016 • Click to toggle off description
In this video, we will be trying to answer a seemingly pretty simple question. How does water put out fire?
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Nile talks about lab safety: • Chemistry is dangerous.
Views : 1,706,280
Genre: Science & Technology
Date of upload: Aug 1, 2016 ^^
Rating : 4.944 (962/67,253 LTDR)
RYD date created : 2022-04-09T16:59:28.475393Z
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YouTube Comments - 3,821 Comments
Top Comments of this video!! :3
because water is blue and fire is red
26K |
"Common fires" implies the existence of a fire rarity hierarchy, and that excites me greatly. I can't wait to find out what epic fires are.
2.5K |
Some firefighting methods (like sand and probably at least some types of foam) do not absorb as much heat as water (in particular, sand does not boil at flame temperature, and in many cases won't even melt), so these will depend more upon excluding oxygen.
Would be good to have a follow-up video about the fires that water CAN'T put out.
830 |
"yes, i am blowtorching water"
5.6K |
Everyone laughs until the water catches fire.
7.6K |
It is also worthwhile to note that water has a large "specific heat capacity" as well. That means just GETTING it to 100C takes quite a bit of energy as well. The boiling is certainly the more significant portion but this does add to it. Also anything with enough water on it (or submerged) is not getting oxygen, so it does work at least somewhat on that part of the fire triangle, but yes, its main function is the removal of heat (mostly due to vaporization energy).
383 |
I’m a fire protection system specialist, and this is a great explanation and demonstrations. I’d love to see a follow up covering removing the heat chemically, but I don’t think you’d be able to get a demonstration going, definitely not on a doable budget, but I’d still love to hear you talk about it because you always explain things very nicely.
169 |
I was about to go to sleep, but now I need to know the answer to a question I didn't even know I had
2.7K |
"From a young age, everyone is taught that water is the enemy of fire."
...But everything changed when the Fire Nation attacked.
14K |
I don't remember when I first watched this, but it stuck with me, and now I'm going through safety training for my new job, got to the part about fire, remembered this video and rewatched it to take notes on some of the very good info you have here. Thanks for making the video and making it publicly available to people. I know you're generally very big on safety and proper procedures- and I kinda wonder what other topics you could explain the science of why they happen the same way you've done here.
49 |
I actually wondered this, so happy to have an answer! I already thought myself that it has to be that it takes away heat, this explanation expands on that understanding so much more!
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"Liquid water won't exist in temperatures above 100c"
Pressure chamber: hold my vapor
4.6K |
This was just an excuse to set things on fire, wasn't it?
1.4K |
I just saw this for the first time (as far as I'm aware), not only almost 7 years ago (3 months from now), but well after I was already very familiar with and had watched plenty of your videos (probably mostly on nilered but I haven't counted). Thank you for explaining it.
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I like this because he gives the direct answer pretty close to the beginning and then he goes for the dive.
Then you have articles written where they'll write an entire page or 5, then at the end finally disclose that they don't have the answer you came to the article for.
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I was actually taught this very early in my life: so at first I was confused by your intro. Then I realised I wasn’t taught this in school, and the reason I know it is probably because my dad was (is) a fireman.
2.3K |
In enclosed spaces like buildings and especially ships, with a fire that really has gotten going, the temperatures are so high that water flashes to steam if sprayed in a high volume mist.
In this situation the steam plume displaces almost all of the oxygen locally, instantly choking the flames oxygen source.
Water expands about 1600 times in volume going from liquid to gas. This is however short lived as powerful convection mixes the air again within a couple of seconds . This results in having to hunt the flames around the the room to quickly smother the flames. During all this, the air temperature is dropping due to the combined effects of oxygen depletion from the flame and the thermal capacity of water preventing re-ignition. That's why firefighters keep cooling everything.
I have to add, that Nile is not wrong at all.
But if a room fire is hot and intense enough, the displacement of oxygen in the room becomes a very, very useful tool.
I am trained in firefighting on board ships BTW.
1.4K |
Thank you so much for making this actually !
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I was literally thinking about this a couple of days ago. Thanks :)
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@shurdi3
4 years ago
It's cause fire can't swim, duh
5.1K |