Liquid nitrogen + swimming pool... Would you jump in!?

[Random Hero]

https://www.youtube.com/watch?v=w2mj-Sq2oeo

 

[Bob Savage]

Yes, as long as I wasn't particularly gassy that day. If it were today I'd light that place up... Heck, I'd light it up without the nitrogen.

 

[again with this]

liquid nitrogen? no, don't think I want to be instantly freeze dried.

 

[Qweklain]

I might jump in for the right price...

 

[stanbog]

is it really liquid nitrogen? cause its boiling point is −196 °C/−321 °F

it looks more like dry ice to me, but what do i know...

 

[FourT6and2]

It's perfectly safe.

You can even pour a bit of liquid nitrogen on your hand and it's safe. The boiling point of liquid nitrogen is so low compare to your body that it just dissipates as soon as it touches your skin.

Plus the amount that was dumped into the pool wouldn't be enough to lower the temperature of the water by even 1 degree F.

 

[trey85stang]

It's perfectly safe.

You can even pour a bit of liquid nitrogen on your hand and it's safe. The boiling point of liquid nitrogen is so low compare to your body that it just dissipates as soon as it touches your skin.

Plus the amount that was dumped into the pool wouldn't be enough to lower the temperature of the water by even 1 degree F.

I think a small splash of liquid nitrogen on you skin isnt a big deal... but I dont think I would be carrying a bowl of LN like in that video... it can burn you (cold burn) if it spills on you.

 

[mysticaxe]

liquid nitrogen? no, don't think I want to be instantly freeze dried.

You might be frozen, but there wouldn't be any drying - water has essentially 0 vapor pressure at that temp.

 

[J.B.]

Doesn't liquid nitrogen have to be under pressure to stay in a liquid form?

 

[mysticaxe]

Doesn't liquid nitrogen have to be under pressure to stay in a liquid form?

Yes, its evaporating like crazy when open. That bowl of liquid nitrogen, on its own, would probably take about 25 minutes to evaporate. The bigger danger, when jumping into the pool, would be coming up for air, and getting nothing but N2. Suffocation is a far bigger threat than freezing in that scenario.

 

[J.B.]

Doesn't liquid nitrogen have to be under pressure to stay in a liquid form?

Yes, its evaporating like crazy when open. That bowl of liquid nitrogen, on its own, would probably take about 25 minutes to evaporate. The bigger danger, when jumping into the pool, would be coming up for air, and getting nothing but N2. Suffocation is a far bigger threat than freezing in that scenario.

Ah ok. I thought it would turn to vapor allmost imediately. I work with refrigerants and they all turn to vapor allmost instantly. Not that I would ever release refrigerants into the atmosphere or anything.

 

[mysticaxe]

Doesn't liquid nitrogen have to be under pressure to stay in a liquid form?

Yes, its evaporating like crazy when open. That bowl of liquid nitrogen, on its own, would probably take about 25 minutes to evaporate. The bigger danger, when jumping into the pool, would be coming up for air, and getting nothing but N2. Suffocation is a far bigger threat than freezing in that scenario.

Ah ok. I thought it would turn to vapor allmost imediately. I work with refrigerants and they all turn to vapor allmost instantly. Not that I would ever release refrigerants into the atmosphere or anything.

I play with Liquid Nitrogen from time to time - fun stuff - that's exactly what it does when spread over a warm surface.