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Joined 1 year ago
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Cake day: July 2nd, 2023

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  • If you want round trip efficiency higher than 30% you need prohibitive quantities of platinum and iridium (with some promising research to maybe replace the iridium with cobalt, making fuel cells about as sustainable as NMC batteries).

    Storing it is also generally prohibitive. Small high pressure vessels have a hard expiry date shorter thna the expected life of a battery, take up more space and cost as much as LFP batteries. By the time you add a fuel cell stack and buffer battery there’s not really any weight saving either.

    Geologic storage is an option, but use cases are limited. Large scale stationary tank storage is also a possibility for industrial chemical use.

    Hydrogen hype is largely a greenwashing and delay tactic by the oil and gas industry.


  • PV energy in low cloud areas is <2c/kWh and dropping 7-10% p.a (a recent UAE ppa was 1.6c).

    Crude oil is presently ~4c/kWh and frequently 6c. Distillates are often over $1/L before taxes or 10c/kWh.

    20% one-way energy efficiency competes with oil. If the catalyst stack is significantly cheaper than water electrolysers it can use curtailed renewables and compete with oil at <10%.

    Won’t replace batteries or electrification, but a solid choice for emergency storage or high capital, low-use assets (like a forklift that gets used twice a week or a bbq).

    >50% efficiency would displace fossil gas with sufficiently cheap catalyst stack.




  • If air pollution policy was set based on assuming all humans are spherical cows in a vacuum, you might have a coherent point, but when the dominant controlling power in your field is based on the assertion that we should just remove the air to make reality more like the models then your field is a laughing stock.

    If I posit for a moment that you actually come from a sub-field interested in describing reality rather than altering reality to suit the wealthy, then you should rename what you do or get rid of the ones giving you a bad name. Clean up your shit or call what you do if you want to be taken seriously. Otherwise you get to be lumped in with the feckless ghouls your field holds up as experts.






  • The economist’s fundamental assumptions are wrong. The free market rational actor model is wholly incompatible with the ability of a finance or marketing industry to exist because marketing could never inform or convince anyone of anything and contracts can provide anything financialisation does without giving 10% of your income to someone who did nkthing. Given that both exist and together dominate the industry of the wealthiest countries, we know that none of it is real, and that the people pushing it also know this.

    Psychology and physics are founded in empiricism, not post-hoc rationalisations of what the powerful wanted to do anyway.



  • Worse than that. It’s more along the lines of asserting that they are happy with the financial arrangement and “jokes” as per the status quo, and that they stand by him and his decision to advertise their product for money on the “apoplogy” video. They’re making fun of the ones raising the issues, not linus. Even further they’re trying to milk to controversy for attention.