Contained Combustion.
- frankrede
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If you had a lenght of pipe that had 2 end caps glued on and you injected propane into it and ignted it, would teh pressure be stored or would it just explode. Maybe you could store the pressure from the explosion? I know this doesn't sound right but I'm not sure.
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Well I dont believe it wouldnt explode (correct me if im wrong) because the pressure caused by a combustion(isnt it like 100psi or something) is not enough to over come Sch 40 pvc (again isn't it like 160psi).
If it did not explode it would not hold its pressure. Matter cannot be created nor destroyed. This means that if you have something and you burn it the byproduct(what ever stays in ur chamber {carbon moxide or w.e}) will equal what ever you put into the chamber (say propane). So when you burn something you arent actualy creating or destroying anything(chemicaly) you are changing this something into different chemicals and energies.
Phew well that explains why you wouldnt have different pressures before and after minus the explosion.
As for why you have all that energy created. Moleculs (sp) that are hotter are more spread out then colder moleculs. This explains why frozen water is hard and why really hot water (steam) isn't mostly visable. When you create the reaction inside the chamber it causes all the temperatures inside the chamber to spike greatly thus superheating the moleculs and maknig them expand (increasing the psi in the chamber). When the temperature goes down the gasses inside the chamber(byproducts) become closer (molecularly) and the psi goes back down.
I think that covers it.
Im not 100% sure about that but im pretty sure so if anyone can back me up or argue what i say i appreciate it.
If it did not explode it would not hold its pressure. Matter cannot be created nor destroyed. This means that if you have something and you burn it the byproduct(what ever stays in ur chamber {carbon moxide or w.e}) will equal what ever you put into the chamber (say propane). So when you burn something you arent actualy creating or destroying anything(chemicaly) you are changing this something into different chemicals and energies.
Phew well that explains why you wouldnt have different pressures before and after minus the explosion.
As for why you have all that energy created. Moleculs (sp) that are hotter are more spread out then colder moleculs. This explains why frozen water is hard and why really hot water (steam) isn't mostly visable. When you create the reaction inside the chamber it causes all the temperatures inside the chamber to spike greatly thus superheating the moleculs and maknig them expand (increasing the psi in the chamber). When the temperature goes down the gasses inside the chamber(byproducts) become closer (molecularly) and the psi goes back down.
I think that covers it.
Im not 100% sure about that but im pretty sure so if anyone can back me up or argue what i say i appreciate it.
- frankrede
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Ok, wow, thats alot.
Thanks, I was wondering if anyone knows how long it would take to cool down? Maybe you could make a portable pneumatic that way.
Thanks, I was wondering if anyone knows how long it would take to cool down? Maybe you could make a portable pneumatic that way.
Current project: Afghanistan deployment
Enough for the pressure to go down. Ive heard 1/4 a second. Its only a spike...
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umm? once it combusts, don't the atoms/molecules or whatever speread out more?
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Last edited by SpudBlaster15 on Wed Jul 14, 2021 12:00 pm, edited 1 time in total.
- rna_duelers
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Wouldnt a vacum form?
- ProfessorAmadeus
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Maybe... Then it would implode. That would be cool.
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- mark.f
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Yes, but Avogadro's Principle states that a mole of gas, doesn't matter which gas, occupies 22.4 liters of space at STP.Scope wrote:
If it did not explode it would not hold its pressure. Matter cannot be created nor destroyed. This means that if you have something and you burn it the byproduct(what ever stays in ur chamber {carbon moxide or w.e}) will equal what ever you put into the chamber (say propane). So when you burn something you arent actualy creating or destroying anything(chemicaly) you are changing this something into different chemicals and energies.
When you look at the chemical equation for the combustion of propane, you will see that there are 6 molecules of gaseous reactants, and 7 moles of gaseous products. Therefore, a tiny bit of pressure will stay as long as the water, (part of the reactants), stays gaseous.
I estimate you will get around 116 PSI peak pressure.
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Last edited by SpudBlaster15 on Wed Jul 14, 2021 12:00 pm, edited 1 time in total.
- Flying_Salt
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That would be awesome if you could. Then you could make pvc rockets, pressureize them, then shoot them for a satisfying explosion.frankrede wrote: Maybe you could store the pressure from the explosion?
Anywhoo, what sparked this idea in the first place?
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