Google Deploying Huge CO2 Battery Facilities with Company Energy Dome

Comments

• etchinghillside@reddthat.com ⁨5⁩ ⁨weeks⁩ ago

  The idea behind the “CO2 battery” is simple. By compressing the gas using excess green power, it can later be depressurized to spin large turbines.

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• My_IFAKs___gone@lemmy.world ⁨5⁩ ⁨weeks⁩ ago

  CO2 is a nice substance for this due to its relatively high temperature of fusion at modest pressures (and cheap ubiquity). I’d wondered why this wasn’t more of a thing with air, using excess energy to liquefy it, to later let the LN2 to be vaporized/expanded in a turbine and the LOX to be used in rockets or something. Or maybe use excess power to electrolyze water for fuel cell use later.

  But yeah, CO2 makes a lot of sense despite its relatively poorer specific heat ratio for adiabatic expansion compared to mono and diatomic gasses.

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  • booly@sh.itjust.works ⁨5⁩ ⁨weeks⁩ ago

    Or maybe use excess power to electrolyze water for fuel cell use later?

    Hydrogen storage presents a lot of challenges, because it tends to leak at normal temperatures found on Earth. So we either tolerate a lot of loss during storage, or we use lots of energy chilling it to a temperature where it won’t easily escape.

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• Telorand@reddthat.com ⁨5⁩ ⁨weeks⁩ ago

  Great. So we’ll waste energy capturing and compressing a useless gas, then we’ll just release that into the atmosphere when it’s capitalistically convenient? Brilliant. Great work, Google. You’ve really gone green. /s

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  • kami@lemmy.dbzer0.com ⁨5⁩ ⁨weeks⁩ ago

    The co2 used is a fixed amount that resides in a closed loop and never gets released to make the battery work.

    Try not to make a fool of yourself next time or you’ll damage the ideals you are fighting for.

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    • SpikesOtherDog@ani.social ⁨5⁩ ⁨weeks⁩ ago

      I hoped this was going to be direct air capture. Then I realized that all the excess gasses would be valuable, and the system would oxidize faster pulling in atmosphere.

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  • acosmichippo@lemmy.world ⁨5⁩ ⁨weeks⁩ ago

    let’s assume eventually 100% of this CO2 is eventually released into the atmosphere.

    is that any less green than grid storage batteries built from massive amounts of mined metals with an enormous CO2 footprint?

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    • BCOVertigo@lemmy.world ⁨5⁩ ⁨weeks⁩ ago

      From the IEEE article

      If the worst happens and the dome is punctured, 2,000 tonnes of CO2 will enter the atmosphere. That’s equivalent to the emissions of about 15 round-trip flights between New York and London on a Boeing 777. “It’s negligible compared to the emissions of a coal plant,” Spadacini says. People will also need to stay back 70 meters or more until the air clears, he says.

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    • credo@lemmy.world ⁨5⁩ ⁨weeks⁩ ago

      If anything it will create a market (and technologies) for co2 capture.

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  • ExcessShiv@lemmy.dbzer0.com ⁨5⁩ ⁨weeks⁩ ago

    No, it’s a closed loop technoloy that doesn’t release the gas to the atmosphere…and google is not actually the company behind it but potential investors in new pilot plants.

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  • credo@lemmy.world ⁨5⁩ ⁨weeks⁩ ago

    Doesn’t seem very useless if we can use it.

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  • themurphy@lemmy.ml ⁨5⁩ ⁨weeks⁩ ago

    If you want to fight for something, please learn what you stand behind.

    Battery facilities is the next step in green energy, and I like to see different approaches to this. That is what we need right now.

    Will this turn out to be a worse option than what will be invented in 10 years? Almost 100% sure. But did it help us getting to a better place? Yes.

    Fuck Google though, but it doesnt make sense to do blind hate.

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    • Telorand@reddthat.com ⁨5⁩ ⁨weeks⁩ ago

      If you want to fight for something, please learn what you stand behind.

      And how do you know I haven’t? Do you have insight into my mind?

      Here’s my stance: Fuck Google. When have they ever done anything for the benefit of humanity? If this turns out to do exactly what it says on the tin, I’ll be happy to eat my words, but pardon me if I don’t believe that Google is suddenly interested in clean energy.

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  • HertzDentalBar@lemmy.blahaj.zone ⁨5⁩ ⁨weeks⁩ ago

    The CO2 is not released into the atmosphere. That’s what the bag is for.

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• Hotzilla@sopuli.xyz ⁨5⁩ ⁨weeks⁩ ago

  I work in electricity and heat production, to me this sounds mainly green washing. Why use CO2 and plain pressure?

  Storing this magical 200MWh, would require stupid amount of volume and pressure. We have better gasses, and hundreds of years on knowledge in heat pump tech with better efficiencies.

  To my ear it sounds that they just picked CO2 for news articles/investors, not for science reasons.

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• qjkxbmwvz@startrek.website ⁨5⁩ ⁨weeks⁩ ago

  200MWh is about 1/100 of Little Boy, the atomic bomb dropped on Hiroshima.

  Compressed air can get out all at once given the right circumstances.

  Storing energy in a way that can go boom is something I’d be a little scared of, were I a nearby resident. I’m sure thermal batteries can have gnarly failure mechanisms but I would way rather live near one of those than a giant compressed air cylinder.

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• DoctorPress@lemmy.zip ⁨5⁩ ⁨weeks⁩ ago

  [deleted]

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  • heyWhatsay@slrpnk.net ⁨5⁩ ⁨weeks⁩ ago

    Time will tell

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