• DarkCloud@lemmy.world
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    5 days ago

    Predicted fusion energy and energy actually harvested and converted to usable electricity are not the same thing. Your article is about “fusion energy” not experimentally verified electrical output.

    It’s a physicist doing conversion calculations (from heat to potential electricity), not a volt meter measuring actual output produced.

    • tburkhol@lemmy.world
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      5 days ago

      If you’re not sure how the fire works, it seems kind of stupid to build a turbine for it.

      • grue@lemmy.world
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        5 days ago

        If you’re not sure how the fire works, it seems kind of stupid to build a turbine for it.

        Leaving the arguments up to this point aside (because I am not agreeing with or supporting @DarkCloud), your comment on its own doesn’t make much sense. In general, the beauty of of a steam turbine electrical generator is that you don’t have to care how the heat gets generated. You can swap it out with any heat source, from burning fossil fuels, to geothermal, to nuclear, to whatever else and it works just fine as long as the rate of heat output is correctly calibrated for the size of the boiler.

        • tburkhol@lemmy.world
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          5 days ago

          That’s my point: fusion is just another heat source for making steam, and with these experimental reactors, they can’t be sure how much or for how long they will generate heat. Probably not even sure what a good geometry for transferring energy from the reaction mass to the water. You can’t build a turbine for a system that’s only going to run 20 minutes every three years, and you can’t replace that turbine just because the next test will have ten times the output.

          I mean, you could, but it would be stupid.

      • Llewellyn@lemm.ee
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        5 days ago

        We were absolutely not sure how fire really works (low temperature plasma dynamics and so on) when we used it in caves eons ago.

        • scarabic@lemmy.world
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          5 days ago

          We also did not build turbines then.

          Also, a campfire is not plasma, so you probably shouldn’t be building any turbines either.