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Tobberone

@ Tobberone @lemm.ee

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191
Joined
2 yr. ago

  • Nature and economics: Sweden has cut 80% of its net emissions since 1990 and still managed an impressive economic growth

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  • Absolutely! And tests are being performed on how to actually make something that is low carbon and practically useful, like in Fjell, in Drammen in Norway. Unfortunately it's not as easy as finding an aquifer and heat it to boiling point. Here is a link to the Fjell test: https://www.muovitech.com/SE/?page=news&id=649

  • Nature and economics: Sweden has cut 80% of its net emissions since 1990 and still managed an impressive economic growth

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  • Well, Yes and no. Water is a great storage, but it is hard to insulate and very corrosive in the long run. And on the grand scale of things, the amount of water that needs to be heated for city scale applications are hard to deal with. There are cities which has connected huge caves to the district heating system, but the amount of energy stored there is rather insufficient. A case in point, Mälarenergi claims that their energy store, the size of about 120 Olympic swimming pools heated to 95 degrees C, would power a city of about 100 000 people for about two weeks in somewhat benign weather conditions.

    Winter is longer, though, and we need to find ways of storing more heat for longer to be able to make a real dent in demand. There are other methods though, and even better is that some of them doesn't need any carbon what so ever to be viable. And with the new EU directives (EED and EPBD) the foundations and Incentives has been given to start the race for better (district) heating solutions.

  • Nature and economics: Sweden has cut 80% of its net emissions since 1990 and still managed an impressive economic growth

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  • That's true. It is also true that power was generated to support the polish market when half of Sweden's nuclear reactors had to be taken out of production due to some malfunction during a bad cold front in December.

    Having said that, electricity is still scarce during winter which means that a lot of it is used for heating. That must end and ideally in a way that let us use the energy excess during summer for heating during winter.

  • AI models collapse when trained on recursively generated data

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  • Well... Its built on statistics and statistical inference will return to the mean eventually. If all it ever gets to train on is closer and closer to the mean, there will be nothing left to work with. It will all be the average...

  • You're Being Lied To. The EV Market Hasn't 'Stalled'

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  • That would be nice, but are you implying that the same manufacturers that put spyware in one vehicle refrain from doing it in the other solely based on drivetrain? I try to come up with a logical reason, but I fall short.

  • World passes 30% renewables milestone for the first time, decline of fossil inevitable

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  • Which states is it you are referring to? And which countries? And what is it that you think qualifies as being "further left" in this case?

  • Capturing CO2 With Copper, Scientists Generate 'Green Methane'

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  • Oh, you are aussie:) i should have guessed by your username.

    Ok, for starters, where I live that big yellow thing stops shining. Practically (for electricity production anyways) for almost 6 months of the year and almost totally for 3. And even with heat pumps we still use several MWh of electricity every year to heat our homes. A battery park can keep a city running for 1h. Even those planned in NSW (BESS is it?) would struggle to keep things running for mire than a day. To be clear:

    We need more energy storage than can be provided by electric batteries, than can be bought at battery prices and in scales larger than can be produced with any technology current or in the overseeable future. And we needed it yesterday. Any form of low cost, stable, easy to store solution we can use is a huge step forward. Solar is great! But we need the electricity when the sun doesn't shine. Heat pumps are awesome! But their awesomness is needed when the sun doesn't shine so much. That is why we need more energy storage solutions.

    Summertime there are almost limitless electricity available, but that energy needs to be stored somehow. And with limitless (in practice) efficiency isn't an issue. Even storing 1% is better than 0%. Regardless of efficiency.

  • Capturing CO2 With Copper, Scientists Generate 'Green Methane'

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  • You said it yourself. Still undiscovered. The technology we have today can't be used to save more than a day or so of electricity. We need to handle months. Finding more energy dense ways of doing it is crucial.

    And even if we burn it and put it back in the air, it is still positive, because we won't have added more from oil. And if we get enough of the stuff we can let the trees grow, which would be a carbon sink.

    Step 1: stop using oil. If we use the methane as is, we've accomplished this step.

    Step 2: scrub carbon from atmosphere. Upping the game and replacing wood for heating would let the trees scrub the atmosphere, creating carbon sinks

    Step 3: accelerate. Can processed methsne be stored in energy dense compounds? Like oil was?

  • Capturing CO2 With Copper, Scientists Generate 'Green Methane'

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  • Batteries may be more efficient, but we can't use them to store all the energy we need. And heat pumps still need electricity when there is less renewable electricity available.

    Looking at nature, long carbon chains are the way to store lots of energy and being able to use just electricity to get carbon out of the air is a great first step. Capturing the methane will allow us to process it further.

    This is the best news regarding energy storage I've seen in a long time.

  • GNU-Linux

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  • So "it was only a joke" is also back on the menu? Wow, times are rolling back fast!

  • GNU-Linux

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  • Even the term itself is a generalising stereotype. But it we are to have a somewhat serious discussion about it, I'd say It's a human condition, not a gendered condition. For example, given what is (not) known about our respective genders, you felt the need to explain this.

  • GNU-Linux

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  • So stereotyping gender is back on the menu? Are hair color jokes still taboo?

  • Scorching heat across five continents set 1,400 records this week and showed how human-caused global warming has made catastrophic temperatures commonplace.

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  • You dropped your /S ;)

    I know where you are comming from, however. But the thing is, not doing that isn't helping any either. And one thing that needs to be said, which isn't reported on nearly as much as it should, the EU green deal, fit for 55, while it still isn't enough, is legislation which has passed, which has teeth and which will keep EU working to reduce carbon emissions. And will keep us running as fast as we can to be able to make the cut offs and deadlines.

  • Tim Cook is “not 100 percent” sure Apple can stop AI hallucinations

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  • An LLM once explained to me that it didn't know, it simulated an answer. I found that descriptive.

  • This is a real threat :(

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  • I did not in any way mean to suggest sensitivity is not a factor, only to suggest that light sensitivity may be more of a spectrum and that there are persons living in a darker world than others. So, it may not be a person on the top of the bell curve that need more light, but someone on the other end of the spectrum entirely.

    Since the top comment in this thread was about needing more light in an already bright room i meamt to say that there might be reasons why people around us prefer 1 or 100000 lumen...

  • This is a real threat :(

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  • Apparently all eyes are not created equal in ability to transfer light to the retina. Some has narrower or wider fields of vision as well. So, where your eyes may be well adapted to low light levels, others may not be. In a world with no artificial shadows and the sun high on the sky for most of the year, being able to filter out sun light might have been a pro, while now needing lots of artificial lights to see straight.

  • What I thought some abbreviations/emoticons meant vs what they actually meant

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  • A flayer shooter with Oz, you say? Well, the lore is there.

  • Rook.

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  • Q-6 is still within the bounds of the system, though. True Anarchy chess doesn't need such systems^^

  • David Cameron urges BBC to describe Hamas as terrorist organisation

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  • Totally unlike the other fielded armies globally at the moment.

    /S