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this post was submitted on 26 Nov 2023
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I thought the issue with hydrogen is that it is literally small enough in gas form to just pass through materials used in existing infra.
And storing it in liquid form is very difficult (ie, have to keep it cold, as the high pressure will just force the gaseous hydrogen through the tank/pipe walls).
I wouldn't be comfortable with the thought of wall/roof cavities filling up with hydrogen.
Did a gig a while ago that ran on hydrogen generators as a publicity stunt.
There was a 10m exclusion zone around the fuel tanks.
I presume that was just "new tech? hyper health&safety".
A lot of the gas infrastructure was originally built for coal gas and that has a high hydrogen content. Standards have often been kept and so a lot of infrastructure is able to handle it.
https://en.wikipedia.org/wiki/Coal_gas
Did it have high hydrogen? Or was it hydrocarbons rich in hydrogen?
Hydrogen gas. The basic reaction is something like:
3C (i.e., coal) + O2 + H2O → H2 + 3CO
It depends on the process thou and it is usually not super clean.