Re: Cost of Generating Hydrogen Through Electrolysis
- From: Don Lancaster <don@xxxxxxxxxx>
- Date: Mon, 27 Jun 2005 21:35:25 -0700
RJY wrote:
I keep reading posts in this group from naysayers who say stuff like, "hydrogen is too expensive to manufacture using electolysis." It seems those people are convinced that even using renewable energy, hydrogen electrolysis would be too expensive. They then go on and on about the high cost of solar panels, wind turbines, etc., never considering that those things are not mass produced and thus enjoy no economies of scale.
What is the true cost of electrolyzing hydrogen from water? In dollars and power consumption?
Does anyone know the kind of energy that we could get from hydrogen, as compared to gasoline, to power automobiles?
Would electrolysis ever be feasible if the cost of solar panels and other hardware necessary for renewable electricity generation were to drop significantly? And by how much would it need to drop to make electrolysis economical?
I saw a PBS show a while back that featured both hydrogen fuel cell and hydrogen internal combustion engines. The only barrier to making this a reality, according to the show, was the lack of hydrogen production and, mainly, distribution facilities.
http://www.pbs.org/saf/1403/ http://www.pbs.org/saf/1506/ http://www.pbs.org/saf/1506/features/myths.htm http://www.pbs.org/saf/1403/features/borroni.htm
Seems to me that there is a lot of noise regarding this issue. The pro-
hydrogen people may not be completely honest. The anti-hydrogen naysayers are probably not completely honest, either.
So, which is it?
The concept of electrolysis is thermodynamically ludicrous.
Electrolysis is the process of inefficiently converting very high value kilowatt hours of energy into very low kilowatt hours of energy. The loss of exergy is utterly staggering (even BEFORE amortization), and electrolysis can and will play no role whatsoever in any bulk hydrogen economy.
See http://www.tinaja.com/glib/muse153.pdf and http://www.tinaja.com/glib/energfun.pdf for detailed analysis.
-- Many thanks,
Don Lancaster Synergetics 3860 West First Street Box 809 Thatcher, AZ 85552 voice: (928)428-4073 email: don@xxxxxxxxxx
Please visit my GURU's LAIR web site at http://www.tinaja.com .
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