Gas Things
Posted: Sun Jan 07, 2007 12:24 pm
Heres a site comparing different gases, I have nothing else to say so enjoy.
http://www.bernzomatic.com/bernzomatic/ ... sons.jhtml
http://www.bernzomatic.com/bernzomatic/ ... sons.jhtml
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Posted: Sun Jan 07, 2007 12:44 pm
thats pretty sweet thanks for that site
Posted: Sun Jan 07, 2007 1:03 pm
Wow! Acetylene requires very little oxygen.
Posted: Sun Jan 07, 2007 1:06 pm
Well, this is kinda usefull except that it tells us everything that we already knew-butane is weaker than propane which is weaker than mapp which is weaker than acetylene. It would be interesting to get some comparisons like this on different gases though. Nice find.
Posted: Sun Jan 07, 2007 1:12 pm
It's still useful though.
Posted: Sun Jan 07, 2007 1:25 pm
I'd like to see the same chart with these included as well:
Propylene
Ethylene
Propadiene
Isopropyl alcohol, (properly vaporized)
and many others.
Propylene
Ethylene
Propadiene
Isopropyl alcohol, (properly vaporized)
and many others.
Posted: Sun Jan 07, 2007 1:31 pm
How the hell did they find out the vapor pressure of acetylene to be 250 psi?
Posted: Sun Jan 07, 2007 1:42 pm
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Posted: Sun Jan 07, 2007 2:07 pm
although the flame temp is hotter by 400 degrees, the burning velocity of propane is much higher, thus it burns faster blah blah blah
Posted: Sun Jan 07, 2007 3:03 pm
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Posted: Sun Jan 07, 2007 4:37 pm
...I figured you guys would compare them.
Butane:
C4H10 + 6.5 O2 -> 4 CO2 + 5 H2O
(7.5 -> 9)
With a flame temperature of 3200*F, this gives us a flame pressure of 7.1 times the inital pressure.
Propane:
C3H8 + 5 O2 -> 3 CO2 + 4 H2O
(6 -> 7)
With flame temperature of 3450*F, this gives us a flame pressure of 7.3x.
That's a difference of less than 3 psi in a typical combustion cannon.
Practicaly the same, if you ask me.
Butane:
C4H10 + 6.5 O2 -> 4 CO2 + 5 H2O
(7.5 -> 9)
With a flame temperature of 3200*F, this gives us a flame pressure of 7.1 times the inital pressure.
Propane:
C3H8 + 5 O2 -> 3 CO2 + 4 H2O
(6 -> 7)
With flame temperature of 3450*F, this gives us a flame pressure of 7.3x.
That's a difference of less than 3 psi in a typical combustion cannon.
Practicaly the same, if you ask me.