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I like how the Terraform's electrolyzers (80 kWh/kg) are less efficient than legacy systems (50 kWh/kg). He compares legacy with current electricity to their sy
by ianburrell 3y ago
I like how the Terraform's electrolyzers (80 kWh/kg) are less efficient than legacy systems (50 kWh/kg). He compares legacy with current electricity to their system with cheap solar when they need to be compared with the same input.
Their problem is that solar power isn't cheap yet. The other big problem is that electrical transmission lines are way more efficient than hydrogen, which 30% efficient on whole cycle. It makes no sense to use hydrogen as energy transport. Cheap hydrogen production at every use point, airport, factory, port, would make sense.
- ricardobeat 3y ago> Cheap hydrogen production at every use point They don’t address this directly, but is probably what they’re going for given the low deployment cost, no maintence, size, and comparison against other energy sources.
- ianburrell 3y agoThe article talks about converting to hydrogen at the solar panel. They don’t mention the expense of shipping the hydrogen where it is needed. And that much of the need is electricity so have to burn it for even more waste. Their proposed device would be really good for distribution if it is cheap and simple. Scale up to port, scale down to truck stop.
- deleted 3y ago[deleted]