Re: OT: new car advice

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Author: shadow
Date:  
To: Main PLUG discussion list
Subject: Re: OT: new car advice
Josh Coffman wrote:
> btw, not that I'm an expert, but the idea of
> hydrogen-fuel cell vehicles is a little scary... One
> accident and boom! right?


Pressurized Hydrogen fuel tanks are actually safer than gasoline tanks.
Here are several points I used to tell people about when I was
volunteering for the American Hydrogen Association.

* The 3000 to 10000 PSI of the tank makes them act like a hunk of solid
steel in an accident. Drop tests from over 100 feet (~140MPH or ~75MPH
head on) of a Cadillac outfitted with 10,000 PSI failed to rupture the
tank or even trigger the pressure relief valves.

* The currently accepted carbon fiber reinforced aluminum tank will
vent gas when punctured, but will not violently explode. Destructive
testing has proven that it will withstand any bullet at 15 feet up to a
Armor piercing .50 Cal round without rupturing due to the high internal
pressure.

* The high pressure lines running from the tank to the engine will
crimp when bent instead of rupturing due to the greater force needed to
bend them.

* Fire will not cause them to violently explode due to multiple
pressure and temperature relief valves that will vent the hydrogen. The
venting hydrogen may burn, but it will be a controlled burn similar to a
propane torch.

* Hydrogen burns and dissipates faster than any other fuel when
released. Gasoline is a sticky fuel that can be ignited days after it
was originally spilled.

Now if we could just find an economical means of Hydrogen production
that doesn't rely on fossil fuels, we would be in business.


--
Chris Lewis


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