Hydrogen must be separated from water using electrolysis. That requires energy. Where did the energy come from?
> Hydrogen must be separated from water using electrolysis. That requires energy. Where did the energy come from? <
That’s an excellent question, and one you’re not supposed to ask.
And for the curious, here’s the answer. It doesn’t look like a very green process.
https://en.wikipedia.org/wiki/Steam_reforming
I just thought this was interesting and I enjoy these discussions here on FR because we do have people who understand this enough to provide worthwhile analysis.
IF you combined hydrogen production using nuclear power it appears to me that it would scale and we could meet some of our transportation needs from the process economically. However, like all the new “green tech”, the rainbows and unicorns crowd will continue to talk about wind/solar despite the fact that we still achieve less than 5% of our electricity from the technologies.
Busy little elves running on treadmills in the engine department
Hydrogen must be separated from water using electrolysis. That requires energy. Where did the energy come from?
Much less how much more energy was required for the electrolysis than was able to gained from the Hydrogen.
Chem Engineering 101: virtually none of our hydrogen is made buy electrolysis. Over half is produced by steam reformation of methane, I.e. a wonderful use of our abundant natural game. Coal and biomass gassification and partial oxidation as well.
This kind dof application makes sense as the H2 plant can be located at airports, the only places where the planes refuel
Where did the energy come from?
Holes in the wall. They are everywhere!
It Probably ran on an electric battery and a platinum catalyst with a tank of hydrogen. The electrons in the hydrogen pop loose traveling over the platinum, and run electric motors and charge the battery. It works in cars now.
Hydrogen mines. They are opening new ones every day.
https://www.desertmountainenergy.com
Naturally occuring Hydrogen is often converted to Ammonia for storage purposes.
https://www.energy.gov/sites/prod/files/2015/01/f19/fcto_nh3_h2_storage_white_paper_2006.pdf
https://www.sciencedaily.com/releases/2020/11/201118141718.htm
https://www.science.org/content/article/ammonia-renewable-fuel-made-sun-air-and-water-could-power-globe-without-carbon