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Hydrogen as heat storage?
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Hydrogen as heat storage? dances_with_barkadas 09-01-2007
Posted by on September 1, 2007, 4:45 pm
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 reference:

http://www.engineeringtoolbox.com/hydrogen-d_976.html


Hydrogen has more than triple the heat-storage-capacity of water.
Safe storage of H2 in cylinders is a standard technology. But I don't
see it being used for heat storage.

Why not?


Posted by stu on September 1, 2007, 6:55 pm
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> reference:
>
> http://www.engineeringtoolbox.com/hydrogen-d_976.html
>
>
> Hydrogen has more than triple the heat-storage-capacity of water.
> Safe storage of H2 in cylinders is a standard technology. But I don't
> see it being used for heat storage.
>
> Why not?
>
Something to do with the price of hydrogen being more than triple the price
of water would be my guess. But it is used for cooling in large generators.
:)



Posted by Anthony Matonak on September 1, 2007, 7:42 pm
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dances_with_barkadas@yahoo.com wrote:
> http://www.engineeringtoolbox.com/hydrogen-d_976.html
>
> Hydrogen has more than triple the heat-storage-capacity of water.
> Safe storage of H2 in cylinders is a standard technology. But I don't
> see it being used for heat storage.
>
> Why not?

Perhaps it has to do the rather inconvenient temperature that liquid
hydrogen requires, it's propensity to leak through near everything,
the way it changes materials, it's cost, flammability or explosive
nature.

That said, hydrogen and helium seem to be popular for heat engines.

Anthony

Posted by on September 1, 2007, 7:54 pm
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> the rather inconvenient temperature that liquid
> hydrogen requires, it's propensity to leak through near everything,
> the way it changes materials, it's cost, flammability or explosive
> nature.


As the reference indicated, I'm talking about gasous Hydrogen. They
sell the cylinders in the Yellow Pages, it can't be rocket science.
Liquid H2 is rocket science.

I can't find any recent H2-inside-cylinder caused fires or explosions
in googling. Can you name one?

We live in houses which have natural gas piped into them; we live in
houses which keep large tanks of propane beside them; we drive
vehicles carrying double-digit gallons of liquid gasoline. Is
hydrogen a higher risk?


Posted by Morris Dovey on September 1, 2007, 8:16 pm
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dances_with_barkadas@yahoo.com wrote:

| Is hydrogen a higher risk?

Yes.

--
Morris Dovey
DeSoto Solar
DeSoto, Iowa USA
http://www.iedu.com/DeSoto/



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