Re: But there is a catch. Hydrogen generally doesn't occur in nature by itself, but rather in combination with other elements. Today it is usually produced from fossil fuel.


"fkasner" <fkasner@xxxxxxxxxxxxx> wrote in message
news:LYuDg.9560$FN2.3156@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Don Lancaster wrote:
lkgeo1 wrote:

Fortunately more environmentally friendly ways of making hydrogen are
at hand. High school chemistry students make it by running an electric
current through water, a process called electrolysis, which splits
water molecules to release their hydrogen.

Not even wrong.

Electrolysis is an environmentally disasterous method of producing
hydrogen because of the staggering loss of exergy.

Thermodynamic fundamentals ABSOLUTELY GUARANTEE that electrolysis will
NEVER be a significant source of hydrogen for bulk energy apps.

Elecytrolysis is pretty much the same as 1:1 exchanging US dollars for
Mexican pesos.

There ALWAYS will be more intelligent things to do with electricity than
instantly and irreversibly destroying most of its value.

See http://www.tinaja.com/glib/energfun.pdf for a detailed analysis.


Nitpick 101: Hydrogen is not found mostly combined with other elements in
nature. In fact it is the most abundant element in the whole universe.
(Assuming dark matter is not hydrogen but that is another story.) But for
the localized "nature" of the Earth it is almost all found in the water of
the planet.
FK

Hydrogen is found in water which means hydrogen combined with another
element, oxygen. Aren't you guys saying the same thing?

To a non-scientist, it seems unscientific to say that rules of
thermodynamics guarantee that hycrogen can not be extracted from water in a
way that produces a net energy gain that is significant. Nothing in science
is written in stone, we are taught. Maybe that is wrong. And if it is true,
for all time and in all applications and that new discoveries will not
produce a new approach or a new situation where the economics of hydrolysis
make sense, then why are intelligent scientists wasting their time on
proceses invoving the extraction of hydrogen using electrolysis?




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