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I really enjoyed reading the top comment of this /r/AskEngineers post [1]. The gist of it is "use electricity directly whenever possible, and otherwise go for e
by Rygian 4y ago
I really enjoyed reading the top comment of this /r/AskEngineers post [1]. The gist of it is "use electricity directly whenever possible, and otherwise go for e-fuels [2]."
[1] https://www.reddit.com/r/AskEngineers/comments/wrv59o/what_are_your_thoughts_on_the_hydrogen_industry/ https://www.reddit.com/r/AskEngineers/comments/wrv59o/what_a...
[2] https://en.wikipedia.org/wiki/Electrofuel https://en.wikipedia.org/wiki/Electrofuel
- raverbashing 4y agoThanks, that's very insightful. But still, it is an engineering response If you go to the e-fuel page he links it says: "They are manufactured using captured carbon dioxide or carbon monoxide, together with hydrogen obtained from sustainable electricity sources" (and what's the efficiency in that process? less than making only H2 for certain) Electrolysis efficiency can go up. Safety issues exists, but fossil fuels are only safe today due to major engineering work. I think most investment in H2 is betting on it "just in case".
- Rygian 4y ago> (and what's the efficiency in that process? less than making only H2 for certain) On the contrary, it will be more efficient overall because you skip the transporting/distributing that hydrogen to a destination. Assume that you can deliver e-fuels over existing pipelines.
- raverbashing 4y agoTrue if you count delivery, but the production efficiency is smaller In the end, it all depends how those numbers compare
- deleted 4y ago[deleted]
- jbu 4y agoIndeed. I found this useful: https://www.linkedin.com/pulse/clean-hydrogen-ladder-v40-michael-liebreich https://www.linkedin.com/pulse/clean-hydrogen-ladder-v40-mic...