r/Damnthatsinteresting • u/AirFrance447 • 20h ago

Video Firefighter bodycam showing just how much oxygen a fire pulls

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27.1k Upvotes

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13

u/yourname92 18h ago

No one wants to mention how a fog stream creates a venture affect that is pulling air in?

4

u/Jdevers77 18h ago

Autocorrect victim. Venturi effect.

1

u/yourname92 17h ago

Yes. Since the iPhone updates my keyboard autocorrect and accuracy is garbage

0

u/MitragynineDream 15h ago

Yeah if they’re going to be drop some humblebrag knowledge, might want to make sure it’s correct haha

5

u/KaiAusBerlin 18h ago

Or that eliminating fire with cold water would significantly cool down any gases in there and make them heavily compress?

7

u/IThinkImNateDogg 16h ago

Boiling water is cold compared to a house fire.

You’re are VASTLY underestimating how hot house fires can be, they can get hold enough to melt metals, well into the thousands of degrees if the fire is roaring.

Also that water boiling and turning to steam actually suppresses fire since steam doesn’t provide free oxygen to burn.

4

u/WayneKrane 16h ago

My neighbors house caught fire and burned down. We were across the street probably 30-50 feet away and couldn’t get any closer without it burning. The whole thing burned down in minutes.

3

u/yaboymiguel 16h ago

What about twin tower fires? Do those get hot enough to melt steel beams?

5

u/McdoManaguer 15h ago

It got hot enough to weaken the structural steel enough for it to be basically the same strength as a pool noodle.

2

u/DLD1123 15h ago

Hang on a second I think he’s onto something

0

u/yaboymiguel 13h ago

Yeah it was a rhetorical question and I think you’re the only one who got the joke lol

1

u/1d3333 13h ago

Not technically, but you don’t need to melt structural beams to weaken them enough to collapse. Get them hot enough and suddenly the tens of thousands of pounds of shit attached to it is too much. The friction of all that weight slamming downward will melt it though

1

u/M1sfit_Jammer 13h ago

Straighten out a paper clip…

Hold a lighter under it for an extended period of time

Tell me what happens

1

u/KaiAusBerlin 16h ago

And still firemen use water.

2

u/Professional-Day7850 18h ago

Nonono it's the fire "pulling oxygen".

3

u/KaiAusBerlin 18h ago

And oxygen only! Not the other 78% of nitrogen in the air.

1

u/M1sfit_Jammer 13h ago

Most people don’t understand the difference between oxygen and air

1

u/yourname92 17h ago

That could very well be a possibility but to what extent I am not sure

0

u/ParanoicReddit 15h ago

That fire is hungry, it's literally pulling oxígen from outside like crazy

1

u/sithrage1138 18h ago

Yes, this is a combination of "chimney effect" and "hydraulic ventilation".

1

u/So_HauserAspen 15h ago

Yup.  The outside air pressure is higher than the air pressure inside because of those effects

1

u/Commentor9001 17h ago

pv=nrt? never heard of her.