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Cake day: August 2nd, 2023

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  • As an engineer, Chernobyl is terrifying. It was close to being 10x worse than it was. The thought that capitalism could do it better is the height of hubris. If you think your technology is fail-safe, nature (including humans) will find a better way to fail.

    There are many reasons besides safety that nuclear makes no sense. Others have listed them here. But this recent hand-waving away of safety is frightening. Saying that our technology today is so much better while anti-intellectualism is running rampant. Saying facilities could always be staffed by experts while our political system is more unstable than ever. Thinking that we could store waste for 10,000 years when humanity has never built something that has intentionally survived a fraction of that time.

    The downside of this equation is just too severe. Nuclear plants are uninsurable for a reason, and by default are insured by the public. That cost is ignored in the equation, because it’s too large for even the biggest insurance conglomerates to consider.





  • oyo@lemm.eetoOpen Source@lemmy.mlFreeCAD 1.0 finally dropped!
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    1 month ago

    I also prefer to move the camera, which a mouse is more intuitive for. A 3d mouse is like holding/rotating the object. A middle mouse button is so freaking simple and fast I just don’t understand the problem. Moving the view around is like 2% of my workflow.

    And scroll up has to be zoom in. The fact that many defaults are the opposite is literally insane.


  • oyo@lemm.eetoOpen Source@lemmy.mlFreeCAD 1.0 finally dropped!
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    1 month ago

    Because solidworks is the gold standard in the space and is intuitive for millennials that grew up on computers. It mirrors other software that came before in terms of super basic stuff like how to draw a damn line. If you’re going to do a big swing and change the paradigm with a fundamentally better way, it better be really good for a really good reason.







  • oyo@lemm.eetoScience Memes@mander.xyzAnon questions our energy sector
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    1 month ago

    Ok let’s compare real data then. Vogtle 3&4 are the latest nuclear plants to be completed in the US. They cost over 30 billion dollars for a capacity of 2.106GW. That’s >14.2 dollars/watt. Let’s be generous and assume nuclear has a 100% capacity factor (it doesn’t).

    I can’t find real numbers for Moss Landing specifically, but NREL has data on BESS costs up to 10 hr storage at $4.2/watt. Let’s ignore that no grid in the country actually needs 10hr storage yet.

    Utility scale solar has well known costs of ~1 dollar/watt. Let’s assume a capacity factor of 25%, so for equivalent total energy generation we are looking at $4.

    $4 for solar, $4.2 for BESS, and since you’ll complain about not having 24hr baseline let’s add another equivalent 10hr storage system at $4.2. that’s a total of $12.4, compared to Vogtle’s $14.2.

    Add in that the solar plus BESS would be built in 1-2 years, while Vogtle took well over a decade.

    Also consider that BESS systems have additional value in providing peaking ability and frequency regulation, among other benefits.

    Also consider that PV and batteries have always gotten cheaper over time, while nuclear has always gotten more expensive.