Re: QUESTION/ANSWER (very important)
- From: Josh Hill <usereplyto@xxxxxxxxx>
- Date: Thu, 03 Jan 2008 10:39:41 -0500
On Thu, 03 Jan 2008 02:39:53 -0600, Wildepad <noreplies> wrote:
On Wed, 2 Jan 2008 13:57:40 -0600, "Cleverly done" <VBG@xxxxxxxxxx>
wrote:
QUESTION: When will industrial engineering finally develop and mass-market
a hydrogen powered, personal transportation vehicle?
ANSWER: When it becomes more economically advantageous than the use of
petroleum and/or other oil based liquid fuels such as ethanol or wotever
else the can dream up to burn in an internal combustion engine.
You forgot to factor in a major issue -- the environment.
The mining, smelting, and processing necessary for the exotic
materials for either a hydrogen fuel cell or a practical hydrogen
storage matrix creates far more pollution than a vehicle could ever
produce.
Do you have a cite for that?
"Nevertheless, 6 kilograms of carbon are emitted during the process
per gramme of platinum recovered, which equates to about 300 - 600 kg
for a contemporary fuel-cell powered car."
http://ergobalance.blogspot.com/2007/03/platinum-barrier-to-fuel-cells.html
And also
"In one year, a new 2001 model small car, traveling the
average12,513.2 miles per year, getting 28.7 miles to the gallon,
using 436gallons/year, spews into the air we breathe*:8,725 lbs of
carbon dioxide (CO2)193 lbs of carbon monoxide (CO)5.7 lbs of
hydrocarbons18 lbs of nitrogen oxide (NOx)smaller amounts of benzene,
formaldehyde, volatile organiccompounds, and other toxic
materials.Larger vehicles, like popular sport utility vehicles (SUVs),
can produce more than twice as much pollution as a small car."
http://64.233.169.104/search?q=cache:CSAKJrQwlIMJ:www.extraordinaryroadtrip.org/pdfs/poundPollution.pdf+how+much+carbon+is+emitted+by+a+car%3F&hl=en&ct=clnk&cd=10&gl=us&lr=lang_en|lang_fr
According to the first site,
"The above figure for carbon emissions incurred during platinum
manufacture for fuel cells assumes that 50 - 100 grammes of platinum
are needed for an average fuel-cell powered car, but the current
industry target is to achieve a loading of 15 g per 70 kW engine,
while the US DOE target is closer to 12 g per 70 kW engine."
http://ergobalance.blogspot.com/2007/03/platinum-barrier-to-fuel-cells.html
Which, using the industry's less optimistic figure, suggests that
production fuel cell cars will emit on the order of 1/5 the carbon. In
the case of hydrogen from fission and electrolysis, the figure would
be increased by the carbon released in the mining of uranium and by
the platinum used in the electrolysis. Even so, it would seem that
from the perspective of carbon emissions, there's no contest -- the
fuel cell vehicle is way ahead.
The impact of the other pollutants released during mining and smelting
would have to be compared to that from the mining and smelting of the
materials used in oil production and refining and to make internal
combustion engines and catalytic converters, as well as that produced
by the production of the lead used in lead acid batteries and the
environmental costs of disposing them. It would also have to be
compared to the direct impact of oil production. And it seems
inevitable that if we continue to increase gasoline use we will have
to use other feedstocks, some of which may have a higher environmental
impact, e.g., F-T gasification of goal.
--
Josh
"I distrust those people who know so well what God wants them to do because
I notice it always coincides with their own desires." - Susan B. Anthony
.
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