/sci/ - Science & Math

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Balloons explosion. Anonymous Mon Apr 21 06:16:33 2014 No.6491970 [Reply] [Original]

So, yesterday, there was a news about 300 balloons flown at an inauguration of something. They fell into a playing ground but they exploded and cause multiple injuries.
My theory:
>Somebody, carelessly, filled them with Hydrogen gas.
>Someone tried to burst them and it caught fire.
>Caused a chain reaction and all 300 got boom.

So /sci/ what do you say.

>>	Anonymous Mon Apr 21 06:40:58 2014 No.6491992 a baloon popping can pop another baloon..

>>	Anonymous Mon Apr 21 07:08:10 2014 No.6492016 >>6491992 >hydrogen can spontaneously combust guys XD dere cudnt have been an ignition source!! its jus magic!!

>>	Anonymous Mon Apr 21 07:11:19 2014 No.6492021 >>6492016 This what I was thinking because Joule-Thompson effect doesn't apply on Hydrogen gas. Sudden expansion of Hydrogen gas is exothermic.

>>	Anonymous Mon Apr 21 16:00:15 2014 No.6492718 >>6491970 >Somebody, carelessly, filled them with Hydrogen gas. I'm not a consumer of balloons so I'm really not sure about this; how available is hyrdogen in comparison to helium?

>>	Anonymous Mon Apr 21 16:19:01 2014 No.6492731 >>6491970 >carelessly filled them with Hydrogen gas How stoned do you have to be to order a flammable gas AND ignore all the safety regulations associated with it?

>>	Anonymous Mon Apr 21 16:22:37 2014 No.6492735 >>6492718 Balloon consumer reporting. I've never seen hydrogen offered. Its now always a mix of helium and oxygen, to deter people from making exit masks

>>	Anonymous Mon Apr 21 17:26:11 2014 No.6492852 >>6492735 Hydrogen is cheaper to get I guess and it seems to be the only explanation.

>>	Anonymous Mon Apr 21 17:33:21 2014 No.6492864 source or it didn't happen

>>	Anonymous Mon Apr 21 18:01:27 2014 No.6492915 HAST DU ETWAS ZEIT FUR MICH? DANN SINGE ICH EINEN LIED FUR DICH VON NEUNUNDNEUNZIG LUFTBALONS UND DASS SOWAS VON SOWAS KOMMT

>>	Anonymous Mon Apr 21 18:53:15 2014 No.6493002 If they were filled with hydrogen why did they fall into a playground? What kind of injuries were caused?

>>	Anonymous Tue Apr 22 04:01:58 2014 No.6493785 >>6493002 Kids playing in a playground were burnt. Let me show you the news: https://www.dawn.com/news/1101326/40-kids-suffer-burns-in-balloon-blast

>>	Anonymous Tue Apr 22 04:15:16 2014 No.6493795 http://en.wikipedia.org/wiki/Balloonfest_'86

>>	Anonymous Tue Apr 22 04:15:18 2014 No.6493796 >>6492735 where do i get pure helium stuff. The military grade helium. not this watered down with oxygen so i can breath shit.

>>	Anonymous Tue Apr 22 04:58:54 2014 No.6493817 >>6492735 Helium is lighter than oxygen though. Wouldn't it just separate out so the top of the tank was helium and the bottom was oxygen?

>>	Anonymous Tue Apr 22 05:14:16 2014 No.6493824 >[citation needed]

Anonymous Tue Apr 22 05:21:28 2014 No.6493828

>>6492021
>This what I was thinking because Joule-Thompson effect doesn't apply on Hydrogen gas.
It does, hydrogen has a negative joule-thompson coefficient at ambient temperatures and will warm up when expanded through a throttling process.
>Sudden expansion of Hydrogen gas is exothermic.
Not necessarily. If work is extracted during the expansion; i.e. by expanding it under a piston, then it can indeed cool under expansion.

In any case, party balloons are SO near to ambient pressure that none of this is relevant anyhow. Escaping hydrogen would literally only expand by a few percent.

>>	Anonymous Tue Apr 22 05:47:06 2014 No.6493839 >>6493795 People are so fucking stupid. What asshole thought filling up 1.5 million balloons and releasing them was ever a good fucking idea? fuck them.

>>	Anonymous Tue Apr 22 05:58:13 2014 No.6493842 File: 13 KB, 250x194, spurdo spin.gif [View same] [iqdb] [saucenao] [google] >>6492731 #YOLO

>>	Anonymous Tue Apr 22 06:51:32 2014 No.6493859 Could be natural gas, rather than hydrogen - locally, natural gas is far easier to acquire than helium, available at every gas station in large pressure canisters.

Anonymous Tue Apr 22 06:53:36 2014 No.6493861

>>6491970
I'm surprised at how many people don't realize how much yes the answer is... if they all exploded with fire then they were full of hydrogen, since it is very combustible and unstable, the instant pressure change in the popping of one balloon will set it off.

The blast is really small and lasts a fraction of a second but there is a nice fire explosion, probably enough to set off a chain reaction. Wish I was there to see it that would of been funny as hell... bet it was loud

>>	Anonymous Tue Apr 22 12:12:24 2014 No.6494137 >>6493817 When I dissolve sugar in water does the sugar all go to the bottom?

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