3 ms·
And the hydrogen will still diffuse into the steel. And make it brittle so all bottles, pipelines etc have a limited lifespan compared to infrastructure for met
by slow_typist 4y ago
And the hydrogen will still diffuse into the steel. And make it brittle so all bottles, pipelines etc have a limited lifespan compared to infrastructure for methane. And you always need pumps to get it from one containment into another because it stays gaseous all the time. Don‘t get me wrong, all these problems are technically manageable. But from the economic perspective the H2-hype is not reasonable at all. H2-application will stay niche application. Getting iron ore reduction away from coal would be a huge accomplishment given the economics of H2.
- fsh 4y agoThis is yet another misconception. Hydrogen embrittlement is due to atomic hydrogen being created in chemical reactions. Gaseous hydrogen consists of H2 molecules which do not lead to embrittlement [1]. [1] https://en.wikipedia.org/wiki/Hydrogen_embrittlement https://en.wikipedia.org/wiki/Hydrogen_embrittlement
- slow_typist 4y agoMaybe embrittlement is the wrong terminus but nevertheless molecular hydrogen poses risks to steel-made components of methane infrastructure. See for example [1]. There is also funded research at Fraunhofer [2]. [1] https://www.twi-global.com/technical-knowledge/published-papers/review-of-the-effect-of-hydrogen-gas-on-fatigue-performance-of-steels-june-2010 https://www.twi-global.com/technical-knowledge/published-pap... [2] https://www.lbf.fraunhofer.de/en/projects/hydrogen-cyclic-stress.html https://www.lbf.fraunhofer.de/en/projects/hydrogen-cyclic-st...