Ok folks, you know what happens when a hydrogen fuel tank gets punctured in a crash? Nothing. The gas escapes and the crash site is safe right away. As opposed to gasoline where every second that goes by it gets more and more dangerous, the gasoline getting closer and closer to a source of ignition. I bet you if this crazy idea works we will all be safer on the road
@Franknbeans: I'm sorry, but that's simply not true. The lower explosive limit of hydrogen is only 4%, so upon release any localized concentration would quickly become explosive. The upper explosive limit is 74%, so there is quite a wide range of concentrations over which ignition is possible, and ignition also requires about one-tenth the energy of gasoline vapors. To say that a cylinder punctured during an event as chaotic as a crash would harmlessly vent to the atmosphere is completely irresponsible.
Hydrogen fuel delivery will take decades. The average American's dog is smarter than the average American. I can imagine huge hydrogen fires all over the country if delivery isn't dumbed down and made 110% safe.
Oh and there is a limited supply of Helium on the planet. There is no way to "create" Helium, it is a by-product of natual gas drilling.
@EVEs_Mako: 110% safe, like gasoline? Cause I'm tired of all these gosh-darned gasoline fires. You do know it'd be more of a hydrogen explosion and not a fire, right? Hydrogen doesn't have the stickiness of gasoline, so as long as it's not lit in a confined space you'd just have a large, mostly harmless fireball instead of the nastiness of a gasoline fire. Might roast a few birds flying overhead, but when you'd probably be pretty safe on the ground.
Hydrogen..."the wonder fuel of the near future"? Umm, are we really talking about bringing hydrogen into our daily lives as a major component of fuel cells? I mean, HYDROGEN, fergawdzsake--as in The Fuel That Made the Hindenburg Famous, that hydrogen?
@bosskev: Not to mention the whole 'more-an-energy-storage-device'... deal... Besides, if the US hadn't labeled helium a 'War Material', the chances are pretty good you'd still see zeppelins flying routes today.
@bosskev: Are oil and gasoline that much better? Hydrogen production won't make oil spills, or light Tibetan monks on fire. And last I checked, a gas tank explosion isn't much fun either.
@mumin: Uhh...yeah. Not as a fuel, yup. It was only a lifting gas. Got it. Thanks for letting us know.
Yeah, not a fuel at all, so therefore, totally safe. And I guess that whole Hindenburg ruckus was like one of those "NASA puts man on the moon" hoaxes, right?
Well, I can't speak for anyone else, but that completely puts my mind at ease.
Helium was initially selected for the lifting gas as it was the safest to use in airships (absolutely nonflammable). At the time it was extremely expensive, available only from one or two mines in the United States under military control. Hydrogen by comparison could be cheaply produced by anyone and had considerably more lift. The American rigid airships using helium were forced to conserve the gas at all costs and this hampered their operation. While a hydrogen-filled ship could routinely valve gas as necessary, a helium-filled ship had to resort to dynamic force if it was too light to descend, a measure which took a toll on its structure. Initially the United States was willing to sell helium to the Germans, but soon a military embargo against Germany forced the re-engineering of the Hindenburg to use hydrogen for lift. Although the danger of using hydrogen (which unlike helium is flammable) was obvious, there were no alternative gases that could be produced in sufficient quantities that would provide sufficient lift. One beneficial side effect of employing hydrogen was that more passenger cabins could be added. The Germans' long history of flying hydrogen-filled passenger airships without a single injury or fatality engendered a widely-held belief that they had mastered the safe use of hydrogen. While the decision to fly with hydrogen may appear incredibly dangerous today it can be seen as quite reasonable at the time. The Hindenburg's stunning first season performance appeared to demonstrate this conclusively."
@delithic: No. And please don't make me learn. I enjoy my safe little fantasy world of elemental ignorance. I mean, next thing you're going to tell me is that I've been drinking the stuff.
12/19/08
11/25/08
I bet you if this crazy idea works we will all be safer on the road
11/25/08
11/25/08
11/25/08
Oh and there is a limited supply of Helium on the planet. There is no way to "create" Helium, it is a by-product of natual gas drilling.
11/25/08
11/25/08
Oh, the humanity.
11/25/08
Besides, if the US hadn't labeled helium a 'War Material', the chances are pretty good you'd still see zeppelins flying routes today.
11/25/08
11/25/08
11/25/08
Yeah, not a fuel at all, so therefore, totally safe. And I guess that whole Hindenburg ruckus was like one of those "NASA puts man on the moon" hoaxes, right?
Well, I can't speak for anyone else, but that completely puts my mind at ease.
* smiles and nods *
* backs away cautiously *
11/25/08
[www.plugpower.com]
11/25/08
11/25/08
Yes. Sad, but true.
"And last I checked, a gas tank explosion isn't much fun either."
Tell that to Michael Bay.
11/25/08
11/25/08
Almost funny? Almost??? I worked hard on that bit of paranoic drivel and I'm almost funny? Damn. Everybody's a critic.
Besides, who else is saying I'm paranoid, huh? Yeah, who else? You? Maybe you? All of you??? I knew it...
11/25/08
BOSSKEV: Doing His Part to Wake Up Dead Threads Everywhere
And my job here is indeed done...
;^)
11/25/08
[en.wikipedia.org]
11/25/08
11/25/08