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Author Topic: The steam Charge  (Read 5626 times)
Mr_Red_X
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« on: January 15, 2007, 02:41:48 PM »
 Favore by small groups and mercenaries, The steam charge is a cheap way to easily capture a base.

It is made up of compressed gas (typically steam, the cheapest to produce...). It has a mechanisim that ruptures itself to release said gas but freezes all around it. So basically it is anti persone, but keeps technology intact...mostly.
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Hamilton
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« Reply #1 on: January 16, 2007, 04:29:05 PM »
Question, how does Steam freeze people?
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Dead Eye
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« Reply #2 on: January 16, 2007, 05:22:05 PM »
I'm just going to guess Tongue.....when the steam comes out of the weapon it's still hot, but then the weapon is used in a sub-zero temp enviroment so after like 5 seconds the steam turns to ice freezing anything the steam touches.

That's just my werid guess Tongue
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Shadow Star
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« Reply #3 on: January 16, 2007, 08:39:35 PM »
My guess...

Rapidly releasing a gas that is highly pressurised actually makes it very cold. Example. CO2 canister for pellet guns, fire it quickly and there is a lot of frost and ice on the cylinder. Dont know the physics behind it.
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texmechs
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« Reply #4 on: January 17, 2007, 06:41:46 PM »
Quote from: Shadow Star on January 16, 2007, 08:39:35 PM
My guess...

Rapidly releasing a gas that is highly pressurised actually makes it very cold. Example. CO2 canister for pellet guns, fire it quickly and there is a lot of frost and ice on the cylinder. Dont know the physics behind it.

I had actually typed out a long, confusing diatribe that said the same thing as this wikipedia entry:

As a gas expands, the average distance between molecules grows. Because of intermolecular attractive forces, expansion causes an increase in the potential energy of the gas. If no external work is extracted in the process ("free expansion"?) and no heat is transferred, the total energy of the gas remains the same because of the conservation of energy. The increase in potential energy thus means a decrease in kinetic energy and therefore in temperature.

A second mechanism has the opposite effect. During gas molecule collisions, kinetic energy is temporarily converted into potential energy. As the average intermolecular distance increases, there is a drop in the number of collisions per time unit, which causes a decrease in average potential energy. Again, total energy is conserved, so this leads to an increase in kinetic energy (temperature). Below the Joule-Thompson inversion temperature, the former effect (work done internally against intermolecular attractive forces) dominates, and free expansion causes a decrease in temperature. Above the inversion temperature, the latter effect (increased potential energy associated with collisions) dominates, and free expansion causes a temperature increase.


Hope that clears it up?
« Last Edit: May 09, 2008, 10:27:21 AM by Force of Arms » Logged
Jeff "-=TexMechs=-" Newcomb
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« Reply #5 on: January 18, 2007, 03:51:22 AM »
Why must you make my head hurt so?  Cheesy
Can someone provie a translation into english? That physics mumbo jumbo is making my head hurt this early in the morning.
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Mr_Red_X
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« Reply #6 on: January 18, 2007, 04:49:07 PM »
Quote from: Shadow Star on January 18, 2007, 03:51:22 AM
Why must you make my head hurt so?  Cheesy
Can someone provie a translation into english? That physics mumbo jumbo is making my head hurt this early in the morning.

Wow i feel like a nerd...I understood it Grin ....enough..... I get the point

I heard it in a movie I saw
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Dead Eye
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« Reply #7 on: January 18, 2007, 07:31:59 PM »
Quote
I heard it in a movie I saw
Terminatior 2? when that fake cop guy gets frozen?
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Mr_Red_X
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« Reply #8 on: January 19, 2007, 02:16:38 PM »
Quote from: Dead_Eye on January 18, 2007, 07:31:59 PM
Quote
I heard it in a movie I saw
Terminatior 2? when that fake cop guy gets frozen?

Actually steamboy.....in terminator that was nitrogen I beleve...
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Grozzer
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« Reply #9 on: January 19, 2007, 04:47:51 PM »
Quote from: Shadow Star on January 18, 2007, 03:51:22 AM
Why must you make my head hurt so?  Cheesy
Can someone provie a translation into english? That physics mumbo jumbo is making my head hurt this early in the morning.

You're CO2 example is a pretty good idea of what is going on.  The scientific explanation is more than you really need to know.  For  the most part, if you compress a gas (such as air, or vaporized water), it has less area to move around in, but it still wants to move just as much (just as much energy), so the temperature rises.  When a compressed gas is released into a larger container, the opposite happens (more room, so it "cools off").

Its a little bit analogous to a kindergarten class.  They're going to be much worse bottled up in a small room than in a large area to run around in.   Grin
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Shadow Star
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« Reply #10 on: January 19, 2007, 04:57:24 PM »
yay a common translation. Smiley Thanks Grozzer
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texmechs
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« Reply #11 on: January 22, 2007, 11:04:59 AM »
Hey, you said you wanted an explanation.   Roll Eyes
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Jeff "-=TexMechs=-" Newcomb
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« Reply #12 on: January 23, 2007, 11:50:56 PM »
Can't wait for the FTL explanation.  Grin
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« Reply #13 on: January 24, 2007, 06:07:14 AM »
For sanities sake, please no FTL physics explanations.
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Hamilton
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« Reply #14 on: January 24, 2007, 03:02:10 PM »
Well in short, we called FTL movement as, "Puddle Jumping" and "Space Skipping."
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