Random thought.

[RollingCamel]

What happens if an engine was fed pure oxygen?

[RollingCamel]

What happens if an engine was fed pure oxygen?

[BillCobb]

Formula Space Shuttle or Formula ICBM.

Engines are being fed pure oxygen. Its just that college and university teams can't afford them.

Its the Car-Not cycle...

[RollingCamel]

That is a "what if" question. What if fuel gasoline is mixed with pure oxygen? Just better combustion?

[BillCobb]

Oh Great Car-Knack, what happens when you put pure oxygen in the same proximity as hot iron, steel, aluminum or magnesium?

Take your handy oxy-acetylene torch and give a whiff of just the O2 bottle to your favorite gas motor. Make sure you video it because YouTube will make you an instant 'hit'...

[RollingCamel]

O2 itself is not flammable but will increase flammability or combustion of a material, we all know that. But did anyone before tried it just for the heck of it?

[jd74914]

Combusting fuel with pure O2 yields higher combustion efficiencies since the partial pressure is oxygen is higher than in air (1 vs .21). The efficiency gain is really as a result of higher adiabatic flame temperatures (think of the Carnot efficiency equation).

[PatClarke]

Quote Baz.."And higher flame temps will result in more NOx produced..."

Uh? So where does the nitrogen come from? ;-)

Pat

[Wesley]

You might look into the Apollo 1 fire (or Apollo 13 explosion) if you're curious what aluminum does in a high-pressure, high temperature oxygen-rich environment.

[Baz]

<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by PatClarke:
Uh? So where does the nitrogen come from? ;-)

Pat </div></BLOCKQUOTE>

Oh goodness... didnt fully think that through!! http://fsae.com/groupee_common/emoticons/icon_smile.gif Thanks for the correction...

[RollingCamel]

<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by Wesley:
You might look into the Apollo 1 fire (or Apollo 13 explosion) if you're curious what aluminum does in a high-pressure, high temperature oxygen-rich environment. </div></BLOCKQUOTE>

That is assuming you don't change the mixture ratio.

[RollingCamel]

http://auto.howstuffworks.com/oxygen-engine1.htm

[RollingCamel]

I never thought of how nitrous work before....just press shift/R1...

[jd74914]

<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by RollingCamel:
<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by Wesley:
You might look into the Apollo 1 fire (or Apollo 13 explosion) if you're curious what aluminum does in a high-pressure, high temperature oxygen-rich environment. </div></BLOCKQUOTE>

That is assuming you don't change the mixture ratio. </div></BLOCKQUOTE>

Huh?

Actually, high pressure O2, volatile organics, impingement do not play nicely together. Add adiabatic compression from fast acting valves to that mix and you can have a pretty nice metal fire. There are videos out there showing stainless steel burning.

I'm an engineer for a major fuel cell company and have designed many O2 systems; its not too dangerous at &lt;500 psi, but once you go above that threshold and introduce organics or particles it does get exciting.

[RollingCamel]

So basically what you are saying is that the metal reacts with oxygen without even introducing any fuel.

Thanks for the input.

[jd74914]

The metal and any volatiles are the fuel. The activation energy is provided by particle impact.

Just as another interesting fact, stainless is pretty burn resistant; aluminum and titanium burn much more readily. Copper and other soft alloys are very burn resistant as they can absorb the impinging particulate.

<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by RollingCamel:
http://auto.howstuffworks.com/oxygen-engine1.htm </div></BLOCKQUOTE>
Such a very amazing link!
Thanks you for the post.

[Lorenzo Pessa]

<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by mark01234:
Random Thought! On Friday, Michelle and I hit Detroit for some shopping. We didn’t go to many places, just Wal-Mart, Target, and Meijer. It was nice to see that Wal-Mart is pretty much the same. Different DVDs and CDs on sale, but none that wouldn’t be out of place on sale here. Mostly, the prices were in line. I picked up a few wrestling DVD sets (the Edge one for $13, which was a great find as well as the most recent Shawn Michaels one and the 10th anniversary one for Smackdown), that Iron Man 2 soundtrack by AC/DC for ten bucks, A Few Good Men on DVD, and Mystery Team on DVD. Also got Guitar Hero: Metallica, while Michelle got that AC/DC live Rock Band track pack. Got a couple of bags of chips that are different from what’s available here, but, really, Americans have a lot less chip selection. </div></BLOCKQUOTE>

wow! this is spamming!

[VFR750R]

Well air is ~20% oxygen. If you fed an engine 100% oxygen (plus extra needed fuel), you would expect 5 times the power.

The increase is actually much more than that because in air the 78% nitrogen is generally inert and acts as a heat sink (just like EGR). The burn rate becomes much faster and the adiabatic flame temperature also goes up dramatically.

Think of using pure nitrous oxide instead of air and it's still only 33% oxygen!

[Mazur]

Good luck making it stable.

Stick with NOS.

[RollingCamel]

Gaddafi gaining some ground. Tunis and Egypt must do something about it because he is a threat to our national security and enough bloodshed already.