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Captain Hybrid

Slideshow: Automakers Look to a Hydrogen Car Future

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patb2009
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Gold
Re: Love the Mercedes
patb2009   5/9/2013 1:03:46 AM
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generally hydrogen fuel cells haven't worked out.

The storage density is too low and and the catalysts are touchy.

If they can make a fuel cell work on LNG or Propane or Ammonia, but,

hydrogen gas seems wildly impractical

Elizabeth M
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Blogger
Re: Love the Mercedes
Elizabeth M   5/9/2013 4:26:33 AM
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A joystick! interesting. I can't even imagine how that would work. Of course it would take some getting used to, but it could be more comfortable, easier and more responsive than a wheel. I guess that's the point?

Rockne1865
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Iron
Fuel cells burning natural gas
Rockne1865   5/9/2013 8:45:40 AM
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There was a lot research being done on Fuel cells using natural has there been any progress made? With all the sources of NG this could be used right away! PS what happens to the small amount of carbon when NG or propane is run through a fuel cell?

GTOlover
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Platinum
Re: Love the Mercedes
GTOlover   5/9/2013 9:22:40 AM
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Yes stylish for a student that is probably used to driving their bike around campus and then has the brilliance to put his bike tires on a "car"(?). Innovation, sure. Practical, NOT.

I think this was mentioned, but what is the energy input to make hydrogen fuel compared to the energy output to motor a vehicle?

ratkinsonjr
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Gold
Re: Fuel cells burning natural gas
ratkinsonjr   5/9/2013 9:31:20 AM
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Bloom Energy corporation has been producing fuel cells using methane a.k.a. natural gas or CH4 for fixed installation as commercial building power sources for a few years now. Lesley Stahl did a piece on 60 Minutes about them. A link to their website appears below:

http://www.bloomenergy.com/

It shouldn't be a problem to scale the technology down for either home or mobile use.

While it doesn't completely eliminate carbon from the fuel cycle, the higher efficiency of fuel cells versus internal combustion engines drastically reduces the carbon footprint and my understanding is that the cell chemisty used can be adapted to hydrogen fuel without too much trouble.

GTOlover
User Rank
Platinum
Re:Hydrogen production
GTOlover   5/9/2013 10:21:44 AM
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What about the "BOOM" factor of carrying around a substance that is know to blow up space shuttles? Drivers do not seem to be getting any better at driving, even with the advancments in safety technology!

MWBailey
User Rank
Iron
equivalence between mpg and mpkg
MWBailey   5/9/2013 10:38:59 AM
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The caption of slide 6 states one mile per kg of gasoline is considered equivalent to 1 mpg.  Since a gallon of gasoline is approximately 13.3 kg, this does not seem to make sense.  Is this a misprint or am I missing something?

theboz808
User Rank
Iron
Re: Love the Mercedes
theboz808   5/9/2013 11:08:43 AM
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I believe the joy stick would be the 2013 equivalent of a tiller.

The speed and range specifications and refueling times for Hydrogen Fuel Cells certainly seem more practical than the all electric vehicles.  The explosion risk is always there with hydrogen.  I think development of a large scale hydrogen infrastructure would be the hardest thing to overcome.  It is very hard to store.

bronorb
User Rank
Silver
Never happen
bronorb   5/9/2013 11:23:59 AM
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This is a cute engineering exercise but my advice to auto makers is to put these cars in their respective museums right now as an example of an evolutionary dead-end.

As mentioned above, this technology will never scale to the point of providing hydrogen "gas" stations that our mass motoring public could take advantage of. Elements in a gaseous state (also mentioned above) are difficult to maintain and transport. Can you imagine how expensive it would be to transport compressed hydrogen gas from point A to point B?

The real problem with this technology is cost. It's extremely expensive to make, store, transport, and dispense hydrogen gas SAFELY. It will never progress beyond the few science experiments you see in this slideshow.

IMHO, of course.

Rob Spiegel
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Blogger
Re: Love the Mercedes
Rob Spiegel   5/9/2013 1:38:31 PM
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Good point, Ttemple. Or, let's see how it would do in a fender bender with a massive SUV. I like the idea of smalling down cars, but that's only positive until you come in contact with an SUV.

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