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Gold/Mining/Energy : Green Hydrogen
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To: gg cox who wrote (296)9/3/2021 5:30:12 PM
From: A.J. Mullen1 Recommendation

Recommended By
mel221

  Read Replies (1) of 2051
 
I had not known H2 was a greenhouse gas. A quick google determined it was in effect, because it amplifies the effect of existing greenhouse gases. I found this paper, geos.ed.ac.uk. From the abstract:

If a global hydrogen economy replaced the current fossil fuel-based energy system and exhibited a leakage rate of 1% then it would produce a climate impact of 0.6% of the current fossil fuel based system. If the leakage rate were 10%, then the climate impact would be 6% of the current system.


Even if the leakage were as much as 10%, then substitution of H2 to reduce the impact of fossil fuels, means the effective impact is only 94% of the direct effect of the reduction in Co2, methane, etc. That's clearly a second order effect. Leaks will need to be managed, but they're not a reason against development.

The energetic cost of compression might be a more formidable hurdle for transportation - although again, everything is possible if the energy is cheap enough. I'm more interested in hydrogen to reduce emissions from steel production. My guess is there would be no need for high compression there.

Ashley
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