Cray74 RemoveThis @gmail.com <Cray74 RemoveThis @gmail.com> wrote:
>
> forkliftramp.com wrote:
>> rather than storing h2 as a liquid which is really very bulky why not
>> jack up the pressure in the tanks and store it as a solid. thaw what
>> you need as you need it cause liquid is so much easier to handle but
>> the solid h2 is again literally 99% less volume than liquid h2.
>
> Hydrogen liquid density: 0.071kg/L, about 1/14th the density of water.
> [Ref. 1]
> Hydrogen ice density: 0.088kg/L, a 24% increase over the liquid. [Ref.
> 2]
>
> I don't see a 99% increase in density.
>
> Interesting factoid: the hydrogen in water is at a higher density than
> the hydrogen in liquid hydrogen. Perhaps instead of trying to chill and
> densify hydrogen, you could use an alternate hydrogen source. Of
> course, you'll increase the hydrogen mass ten-fold.
I think I once read that hydrogen can be stored very densely in graphite
or something like that. Not sure how fast you can release the hydrogen
from the graphite, though. That might be a serious bottleneck.
mcv.
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