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High-pressure hydrogen tanks
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| lkgeo1 2006-08-26, 5:25 pm |
| High-pressure hydrogen tanks
Two 350-atmosphere high-pressure
hydrogen tanks provide ample storage capacity.
Given that the hydrogen used as fuel has a low energy density per
volume, as much hydrogen as possible must be available to ensure
maximal driving range. For optimal packaging, however, the fuel tanks
must take up as little space as possible. The FCX's 350-atmosphere,
corrosion-resistant, high-pressure hydrogen tanks are constructed of
three layers: an aluminum liner, a carbon fiber layer, and a glass
fiber layer. The two tanks provide the FCX with a 156.6L fuel capacity.
This large capacity combined with improved fuel consumption contributes
to the car's 430km* driving range. Fueling time at a high-pressure
fueling station is only three minutes, for a level of convenience
comparable to that of a gasoline-engine vehicle.
The Honda FC Stack-equipped FCX, which is capable of starting at
sub-freezing temperatures,is the world's first fuel cell vehicle to
be certified for use on public roads by the US Environmental Protection
Agency (EPA) and the California Air Resources Board (CARB).
Home > Products & Technology > Technology > Fuel Cell > FCX > Hydrogen
Tank http://world.honda.com/FuelCell/FCX/tank/
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| Anthony Matonak 2006-08-26, 8:25 pm |
| lkgeo1 wrote:
....
> This large capacity combined with improved fuel consumption contributes
> to the car's 430km* driving range.
....
Well, since a kilometer is about .62 of a mile this works out to a
range of some 266 miles. It's like that little "*" means something
to the effect of "your mileage may vary" and really means, "only on
the test track".
Most cars are designed to go at least 300 miles without refueling.
They would need a third tank.
That said, 266 miles is respectable but I have to wonder about the
safety of these tanks over time. Hydrogen has a way of doing things
to materials and high pressure tanks have a tendency to explode when
they get old.
Anthony
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| soundhaspriority 2006-08-26, 8:25 pm |
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"Anthony Matonak" <anthonym40@nothing.like.comcast.net> wrote in message
news:NtKdnQ1LIcCIQm3ZnZ2dnUVZ_qqdnZ2d@comcast.com...
> lkgeo1 wrote:
> ...
> ...
> Well, since a kilometer is about .62 of a mile this works out to a
> range of some 266 miles. It's like that little "*" means something
> to the effect of "your mileage may vary" and really means, "only on
> the test track".
>
> Most cars are designed to go at least 300 miles without refueling.
> They would need a third tank.
>
> That said, 266 miles is respectable but I have to wonder about the
> safety of these tanks over time. Hydrogen has a way of doing things
> to materials and high pressure tanks have a tendency to explode when
> they get old.
>
> Anthony
I do too. I hope it has built-in strain gauges like the Boeing 7E7.
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| nicksanspam@ece.villanova.edu 2006-08-27, 3:25 am |
| lkgeo1 <lkgeo1@aol.com> wrote:
>High-pressure hydrogen tanks
>Two 350-atmosphere high-pressure
>hydrogen tanks provide ample storage capacity.
All this vs batteries just because oil companies need to sell fuel? :-)
Nick
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| daestrom 2006-08-27, 9:25 am |
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<nicksanspam@ece.villanova.edu> wrote in message
news:ecr4qn$8j5@acadia.ece.villanova.edu...
> lkgeo1 <lkgeo1@aol.com> wrote:
>
>
> All this vs batteries just because oil companies need to sell fuel? :-)
>
Fuel cells (if not contaminated) have a longer life than batteries.
Re-charging batteries capable of the same range in just 3 minutes would be,
uh, er, um, 'interesting'.
That said, such storage tanks would be 'interesting' in a car crash. They
would need about as much protection as the passenger compartment. And some
sort of safety blow-off directed upwards would seem prudent.
daestrom
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| Dale Eastman 2006-08-27, 5:25 pm |
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daestrom wrote:
> That said, such storage tanks would be 'interesting' in a car crash.
> They would need about as much protection as the passenger compartment.
Uh, "more" protection.
Break the integrity of the passenger compartment, the passengers get
hurt or die.
Break the integrity of the tank you get catastrophic release of highly
pressurized, flammable gas with the potential for a neighborhood hurt
or dead.
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| Anthony Matonak 2006-08-27, 5:25 pm |
| Dale Eastman wrote:
> daestrom wrote:
>
>
> Uh, "more" protection.
> Break the integrity of the passenger compartment, the passengers get
> hurt or die.
> Break the integrity of the tank you get catastrophic release of highly
> pressurized, flammable gas with the potential for a neighborhood hurt or
> dead.
There is the advantage that you don't have to worry about putting out
the car fire with ruptured hydrogen tanks. Hydrogen burns quickly
enough that the action would be all over before anyone could react.
Anthony
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| Eeyore 2006-08-27, 5:25 pm |
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Anthony Matonak wrote:
> Dale Eastman wrote:
>
> There is the advantage that you don't have to worry about putting out
> the car fire with ruptured hydrogen tanks. Hydrogen burns quickly
> enough that the action would be all over before anyone could react.
At least the occupants will be incinerated greenly !
Graham
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| Dale Eastman 2006-08-27, 8:25 pm |
|
Anthony Matonak wrote:
> Dale Eastman wrote:
>
>
>
> There is the advantage that you don't have to worry about putting out
> the car fire with ruptured hydrogen tanks. Hydrogen burns quickly
> enough that the action would be all over before anyone could react.
>
> Anthony
Not enough time to get the hot dogs out of the package....?
8?(
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| Etrius24 2006-08-29, 3:25 am |
| The hydrogen car is a great idea....Truly it is... however they have
yet to come up with a way to make vast amounts of hydrogen
efficiently... There are several ways that they have experimented
with... And the honda car is a good place to start....Getting the range
between fuel ups to 400 miles would make it something consumers would
flock to...
It is one thing to have a home generator to make small amounts of
hydrogen...But there is nothing capable of making enough Hydrogen for a
fueling station on the side of a busy interstate in a urban area that
would re-fill several thousand cars per day...
which is exactly what would be needed if it is expected to replace oil
and gasoline for the automotive industry. Developing a technology is
great...But without committment to make it a reality and infrastructure
to bring it to the mainstream....It will never have any real impact.
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