News for hackers. Stuff that matters.

A comment on India’s biggest businesses are tapping green hydrogen as a future fuel. Parent comment

Re:India’s biggest businesses are tapping green hydrogen as ... by ncmncm on Monday July 04, 2022 @09:41AM (#31976932)
But, more expensive than other energy storage methods. Sometimes though you really want to store hydrogen, not just any old energy. A disused mineshaft often suffices. The world is absolutely perforated with disused mineshafts, that only need a lid.

A buried LH2 tank can have very, very good insulation. You probably want to flare off or re-liquify any boil-off, because H2 has, all told, something approaching 200x CO2's GHG potential.

[ Parent | on HN ]
Re:India’s biggest businesses are tapping green hydrogen as ... by pfdietz on Monday July 04, 2022 @10:06AM (#31977175)
More like 11x (depending on the timescale). Hydrogen itself has no GHG potential (no IR absorption), but it does soak up OH radicals that would otherwise destroy methane, so it acts as an indirect methane source.

https://newatlas.com/environment/hydrogen-greenhouse-gas/

[ Parent | on HN ]