Comment on Solar energy storage breakthrough could make European households self-sufficient

• KinNectar@kbin.run ⁨10⁩ ⁨months⁩ ago

  @JohnDClay

  Good question, this article is pretty fluffy, not a lot of hard data. Reads kind of like a fluffed up press release honestly.

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  • helenslunch@feddit.nl ⁨10⁩ ⁨months⁩ ago

    You don’t need to @ people here, homie

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    • KinNectar@kbin.run ⁨10⁩ ⁨months⁩ ago

      @helenslunch

      Hmmm... it does it automatically for me when I reply. I'm on mbin/kbin

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  • ColeSloth@discuss.tchncs.de ⁨10⁩ ⁨months⁩ ago

    This was totally a fluff investment article for funding.

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• Pelicanen@sopuli.xyz ⁨10⁩ ⁨months⁩ ago

  According to their site:

  A storage system of 3 m3 can store up to 10,000 kWh of energy

  So about 3.33 MWh per cubic meter, 3.33 kWh per liter, or 3.33 Wh per cubic centimeter.

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  • JohnDClay@sh.itjust.works ⁨10⁩ ⁨months⁩ ago

    Hmm, if that’s correct, that’s even higher than liquid hydrogen, which would be really impressive.

    Energy densities

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    • Pelicanen@sopuli.xyz ⁨10⁩ ⁨months⁩ ago

      Since it’s solid hydrogen I think it’s to be expected, however I didn’t see any information regarding energy losses which I imagine would be quite high when you have those kinds of cooling requirements.

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      • abraxas@sh.itjust.works ⁨10⁩ ⁨months⁩ ago

        This is why I hate marketing pushes. If they’re a good-faith business, the efficiency needs to be within shooting distance of reasonable against costs. But as we learned from the artificial meat industry (that ultimately admitted we’ve already probably reached lifetime price/quality/scale limits from the methodologies they’re using) brutal honesty doesn’t get you investors.

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  • Valmond@lemmy.mindoki.com ⁨10⁩ ⁨months⁩ ago

    Thats in the ballpark of a year of usage from a household. Neat if true.

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• abhibeckert@lemmy.world ⁨10⁩ ⁨months⁩ ago

  The article is light on details, but it claims they’re storing the hydrogen as a solid - not as a gas.

  Solids (including hydrogen) are generally about a thousand times more compact than their gas form.

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  • First@programming.dev ⁨10⁩ ⁨months⁩ ago

    They don’t? When the Toyota hydrogen cars were introduced here around 2015, one of the issues were that a full tank of gas would dilute through the tank walls within a week. From the marketing material of the latest Toyota Mirage, it seems that they still use Hydrogen stored in gas form, boasting improvements in a 3-layer tank that is tested for 235% of the pressure that the gas is stored at, compared to 150% for regular gas containers.

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    • philpo@feddit.de ⁨10⁩ ⁨months⁩ ago

      They don’t. They use hydrogen fuel cells to generate electric power.

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      • First@programming.dev ⁨10⁩ ⁨months⁩ ago

        Yeah and what does that have to do with the Hydrogen being stored in gas form? The fuel cell converts it, it isn’t a storage mechanism. Hydrogen has a boiling point of -253C, are you saying that Hydrogen powered cars are fitted with a power hungry cryo chamber to cool down the fuel to a liquid form?

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  • Hamartiogonic@sopuli.xyz ⁨10⁩ ⁨months⁩ ago

    Hydrogen really really doesn’t want to be solid, so doing that requires extremely low temperatures. Incidentally, they specifically said that their applications didn’t use super low temperatures, which doesn’t really leave that many options.

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