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Norway island stores wind power for still days | 30 comments (30 topical, editorial)

Re: Norway island stores wind power for still days (3.00 / 0) (#22)
by powerbuoy on Wed Jun 11th, 2008 at 11:04:11 AM MST
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I have to agree with Sundog ... typical LP tanks (steel) will not hold hydrogen for very long. Hydrogen will leak right through. One will need to purchase these expensive high pressure carbon fibre wound tanks for long term storage.

As for the danger ... I am not sure if some people are not overreacting. I have been playing a bit with electrolysis, fuel cells etc. and have not experienced real danger yet. I have though had one bad experience with my gas driven lawn mover where flames were coming out of the carburator and I started running. I guess its in the eye of the beholder.

Re: Norway island stores wind power for still days (3.00 / 0) (#23)
by MattM on Fri Jun 13th, 2008 at 08:58:21 PM MST
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Hydrogen is relatively tiny.

This picture from http://www.webelements.com/hydrogen/atom_sizes.html

Hydrogen is in the top left corner.
----------------------------- Go Huskers!
[ Parent ]

Re: Norway island stores wind power for still days (3.00 / 0) (#25)
by electrondady1 on Sat Jun 14th, 2008 at 07:11:54 AM MST
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i wonder if coating the inside of the steel tanks with an epoxy paint might slow down the penetration of hydrogen.

[ Parent ]

Re: Norway island stores wind power for still days (3.00 / 0) (#26)
by spinningmagnets (velmis1450bc(at)aol(dot)com) on Sat Jun 14th, 2008 at 09:07:27 AM MST
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I was a parts inspector for a valve company for a while. The rotors were cast aluminum, and a small % of them leaked enough air from porosity that they were sent to another vendor that sealed them.

I have read that the H2 molecule is much smaller than air, but the process and materials of sealing tanks for H2 storage is out there somewhere. I'm assuming the inside of the tank would be the part to coat with sealant.

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Re: Norway island stores wind power for still days (3.00 / 0) (#29)
by joestue on Sat Jun 14th, 2008 at 12:42:10 PM MST
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not significantly.

Beryllium, boron, and carbon are interesting candidates though.

[ Parent ]

Re: Norway island stores wind power for still days (3.00 / 0) (#27)
by finnsawyer on Sat Jun 14th, 2008 at 09:15:23 AM MST
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Did you notice in the lower left hand corner the little grouping of atoms leaves a nice hydrogen size hole? When you throw in quantum effects it's no wonder hydrogen can escape. Yeah, I know it's H2, but that should be shaped like a barbell and could still get through that hole.
GeoM
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Re: Norway island stores wind power for still days (3.00 / 0) (#28)
by electrondady1 on Sat Jun 14th, 2008 at 10:57:40 AM MST
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i was researching what was happening on the hydrogen storage front this morning.
they still talk about metal hydride's .
now the latest seems to be carbon nano tubes.

i don't have any of those at my house.

it would be nice if the performance of the inside coating was
improved by the very nature of hydrogen to bond with other matter.
polymers contain a lot of hydrogen anyway
i wonder if we can turn that to our advantage.
as the hydrogen permeates the surface it closes up the gaps.

[ Parent ]

Norway island stores wind power for still days | 30 comments (30 topical, 0 editorial)

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