Re: Turning wind power into hydrogen

On Fri, 29 Dec 2006 06:27:59 +0000, Eeyore
<rabbitsfriendsandrelations@xxxxxxxxxxx> wrote:



Josh Hill wrote:

The figures I've seen suggest that we're on the road to producing
hydrogen from wind on a cost-competitive basis with gasoline

What ?

You have to be barking mad to think that.

You'll have to forgive me, but last I checked, "barking mad" wasn't an
engineering term. You might want to try a medical journal.

Meanwhile, let me try to enlighten you:

"Figure 5-5 shows the various distributed electrolysis technologies.
This graph shows that the committee conceives of large reductions in
hydrogen costs with technology advances. Most of the reduction comes
from reduced electrolysis capital costs. The reduced capital cost is
primarily the result of the assumption that the costs of proton
exchange membrane (PEM) electrolyzers should decline by almost 90
percent, with successful research and development that parallels the
advances in PEM fuel cells. The cost of solar photovoltaic electricity
also decreases by 50 percent, owing to significant efficiency and
manufacturing cost enhancements. Wind electricity also decreases, but
by a smaller amount owing to its advanced state of current
development.

"For wind-turbine-derived electricity, both production using
grid-delivered electricity when wind turbines are not providing
electricity (Dist WT-Gr Ele-C and Dist WT-Gr Ele-F) and production
relying exclusively on wind-turbine-generated electricity (Dist WT
Ele-C and Dist WT Ele-F) are included. Capital cost decreases by a
larger percentage for electrolysis using wind turbines exclusively.
This particularly large capital cost decrease occurs because, for this
technology, the capacity of the electrolyzer is inversely proportional
to the capacity factor of the wind turbines that supply the
electricity. It is assumed that current wind turbines supply
electricity 30 percent of the time and that the possible future wind
turbines supply electricity 40 percent of the time owing to better
technology for utilizing a wider variation in wind speeds. In
practice, these figures would be very site-specific, with some sites
having higher capacity and others."

http://www.nap.edu/openbook/0309091632/html/54.html

Now, see, table 5-5. Then look up "gasoline cost externalities."

Oh, but I forgot -- the engineers at the National Academy of
Engineering are "barking mad."

--
Josh

[Truly] I say to you, [...] angel [...] power will be able to see that [...]
these to whom [...] holy generations [...]. After Jesus said this, he departed.

- The Gospel of Judas
.

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