God pretty much hates black train carts

"YSI-what can brown do for you" (ysi-what-can-brown-do-for-you) 08/26/2013 at 01:49 • Filed to: None

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Racist much?

Dusty Ventures > YSI-what can brown do for you 08/26/2013 at 02:24

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I'm having trouble comprehending this

desertdog5051 > YSI-what can brown do for you 08/26/2013 at 02:46

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It was actually done on purpose to show the ramifications of not properly venting a tank car when unloading. Here's an article on Gizmodo.

http://gizmodo.com/383045/how-to-…

Saracen > Dusty Ventures 08/26/2013 at 02:49

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Cleaned the inside of the tank with a hot water pressure washer and sealed it back up. After the water inside cooled, the presure differential crushes the tank

YSI-what can brown do for you > desertdog5051 08/26/2013 at 02:53

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Awwww, I thought Thor got angry or something.

I am assuming that all of the pressure on the inside rushes out to equalize on the outside and then car just kind of crumples in on it self. That is just what I think. I couldn't find any info on what actually causes this.

desertdog5051 > YSI-what can brown do for you 08/26/2013 at 03:02

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There is a bunch of stuff on the 'net about it. Most point out it was a demonstration. A very cool one, IMO.

Enginerrrrrrrrr > YSI-what can brown do for you 08/26/2013 at 04:30

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It won't actually rush out to cause this. If it did then it probably wouldn't crumple. This is most likely caused by a change in temperature. Hot gasses inside? Turn to cold temps? (Also looks like maybe they are draining the tank as well without venting air into it to replace the void)

The pressure, volume, and temperature ratios all want to stay the same. Once the pressure drops due to temp change, the volume is going to want to reduce as well to keep everything the way it was. The vacuum was too much and BAM! Crumpled soda can. The venting would allow the vacuum effect to be negligible.

These tanks are designed to not expand outwards first and foremost... but crumpling a cylinder is actually a lot easier to do if you don't take simple precautions.

dropthatclutch > YSI-what can brown do for you 08/26/2013 at 08:11

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I have wondered why they paint them such a matte black. You'd think the sun beating down on it would become a problem.

TheKingOfBirds > YSI-what can brown do for you 08/26/2013 at 09:04

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This happens with commercial brewing (beer) tanks periodically. Grain silos too.

YSI-what can brown do for you > Enginerrrrrrrrr 08/26/2013 at 10:07

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Science! Thanks, doing a quick search on google netted nothing, so you sir are most helpful.

YSI-what can brown do for you > TheKingOfBirds 08/26/2013 at 10:13

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Wait, it happens to silos as well? I must see if there is a video.

TheKingOfBirds > YSI-what can brown do for you 08/26/2013 at 10:28

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I'll get a picture if I see one. There were a lot around at one time.

Casper > YSI-what can brown do for you 08/26/2013 at 10:36

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This happens quite often to the silos at cheese plants. When they drain them they can crush if someone doesn't properly vent them (or make sure the vent is actually opening). When it happens down there I know they get particularly upset, since the entire silo is stainless steel. and has to be shipped in as one huge unit.

It's a "Porch-uh" > YSI-what can brown do for you 08/26/2013 at 11:51

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It's a "Porch-uh" > It's a "Porch-uh" 08/26/2013 at 11:52

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Ok weird. Take 2.

Frank Grimes > YSI-what can brown do for you 08/26/2013 at 12:22

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Or Bilbo got really tall and strong.

Enginerrrrrrrrr > YSI-what can brown do for you 08/26/2013 at 12:43

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Ya know you can probably do the same thing at home. Fill a water bottle up with a little bit of hot water. Close the lid tightly then chuck it in the freezer. The same thing should happen.

YSI-what can brown do for you > Frank Grimes 08/26/2013 at 13:15

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I can believe it. He has been lifting last time I saw him.

delete-me-please123 > YSI-what can brown do for you 08/26/2013 at 13:35

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Some of my best friends are black train carts....

YSI-what can brown do for you > delete-me-please123 08/26/2013 at 13:48

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Better tell them to watch out, God is kind of pissed at them.