Re: Nuclear energy and hydrogen production

On Feb 4, 1:43 am, Rolf Martens <rolf.mart...@xxxxxxxxx> wrote:
In article <1170509053.938248.208...@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>,
dave.walt...@xxxxxxxxxxx says...

More to the point, the real ability of nuclear to crack H2 is using
heat directly, not via electrolosis. Heat itself can crack H2 from
water, so there are plans to build condender diverter valves at new
nuclear plants that would siphon off the steam flow from the turbine
to a H2 refinery (of water desalination plant). This is espeically the
case with the smaller, higher temperature helium plants (the helium is
inert, and thus immune from picking up radiation).

David

Interesting info - new to me.

Do you have any figures on energy efficiency, for
water desalination?

And once more: I believe it's impractical to use H2
directly to drive cars etc. But once suc han energy-rich
substance is there, it can be converted into ethanol
at least and, hopefully, into octane or something too.

For motor vehicles, oil will still be best during a
relatively long time to come. Eventually. nuclear
should take over, I hold.

Rolf M.www.rolf-martens.com

I can't quote anything. What I understand is that it's still
electrolysis but doing it in high temp/high pressure...over 1000 PSI
in quadruples efficiency...making it only a 1 to 5 net lost instread
of a 1 in 20 net loss. Steam-into-natural gas is still more efficient
but it releases CO2 and of course uses NG which one would want to use
more directly.

Most R/D now, conducted by companies that actually need to use H2 is
in this heat cycle cracking of H2. The idea of using H2 in cars *right
now* is being promoted by the oil monopolies because they make tons of
money in cracking H2 out of NG. It's the most totally insane thing
I've heard of...given that the NG they use is *20* times more
efficient used directly as CNG than it would be to use it to make H2.
Absolutely nuts.

David

.

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