this post was submitted on 21 May 2026
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Lemmy Shitpost

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[–] ininewcrow@lemmy.ca 85 points 1 month ago (6 children)

The idea .....

Send water on a 150 million kilometer pipeline to the sun to super heat it ... then pipe the steam back to power a turbine

[–] nightwatch_admin@lemmy.world 48 points 1 month ago (2 children)
[–] lime@feddit.nu 57 points 1 month ago (2 children)
[–] Skullgrid@lemmy.world 16 points 1 month ago (1 children)

I don't know why you made me laugh so much, thanks for that post.

I think it's because it turns the concept into something so low tech and banal

[–] lime@feddit.nu 14 points 1 month ago (1 children)

right? like a potato gun for space

[–] BonsaiBoo@lemmy.world 12 points 1 month ago (1 children)

You just described every rocket ever made by man.

[–] lime@feddit.nu 4 points 1 month ago

potato guns are not typically self-propelled. i'm thinking more like HARP

[–] diabetic_porcupine@lemmy.world 3 points 1 month ago

There could be a whole industry of Dyson Dudes that run back and forth with the tubes

[–] aeronmelon@lemmy.world 12 points 1 month ago

Dyson Straw.

[–] tempest@lemmy.ca 18 points 1 month ago (1 children)

What if the pipeline already existed... But it was made of light

[–] JoShmoe@ani.social 13 points 1 month ago

Shut up science

[–] Clent@lemmy.dbzer0.com 5 points 1 month ago

Wouldn't even need to run it out that far and we don't have the material science to handle temperatures near the sun.

[–] applebusch@lemmy.blahaj.zone 3 points 1 month ago (2 children)

this is just the inverse of concentrated solar. you bring the pipe closer to the light rather than bringing the light closer to the pipe.

[–] ininewcrow@lemmy.ca 5 points 1 month ago

You're not invited to the team building the Solar Dyson Tube Project

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[–] FauxPseudo@lemmy.world 55 points 1 month ago (1 children)

Nuclear power is just steampunk with magic rocks.

[–] 4am@lemmy.zip 26 points 1 month ago (2 children)
[–] Lost_My_Mind@lemmy.world 10 points 1 month ago (1 children)

Too spicy for Ukraine, circa 1986.

3.6M Scoville. Not great, not terrible

[–] aeronmelon@lemmy.world 4 points 1 month ago

So spicy they make everything around them spicy.

[–] frank@sopuli.xyz 38 points 1 month ago (3 children)

I'm an EE by schooling and I've worked in both gas turbine and wind power. Photovoltaics blow my fucking mind. Everything else is just spinning magnets to extract power. PVs are insanely cool

[–] marcos@lemmy.world 16 points 1 month ago (4 children)

Take a look at reverse electro-dialysis.

It's pushing thermal energy into electricity directly by the force of entropy.

[–] bitjunkie@lemmy.world 9 points 1 month ago (1 children)
[–] marcos@lemmy.world 7 points 1 month ago* (last edited 1 month ago)

Entropy is maximized by turning heat into electricity, so electricity appears on the device, as it gets cooler (by a tiny amount).

EDIT: I just noticed that you may be asking about the "reverse electro-dialysis" part :)

It's a process where fresh and salty water enter a machine, and they get mixed while generating electricity. It's the reverse of this:

https://en.wikipedia.org/wiki/Electrodialysis

That runs on the same conceptual machine.

(And oh, looks like it's written together.)

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[–] Lost_My_Mind@lemmy.world 7 points 1 month ago (1 children)

Your name makes me think you're about to lather your own naked body in vasoline, and hide inside the couch.

[–] frank@sopuli.xyz 5 points 1 month ago

I'm known to lather a bit, as a treat.

[–] Rooskie91@discuss.online 6 points 1 month ago

Personally, I like the mirror plants that use the suns energy to superheat salt.

And then use that to boil water. /s

For real, what China is doing with PVs is pretty fucking cool.

[–] kerrigan778@lemmy.blahaj.zone 36 points 1 month ago* (last edited 1 month ago) (2 children)

I actually don't know why people get so hung up on this. When you are making energy it's easiest to make heat, and boiling water through a turbine is a really efficient way to turn heat into motion and we're really good at doing it and turning motion into electricity. The fact that multiple ways of making heat exist is not surprising, the fact that different methods of making heat use the same, most efficient, well understood method for turning heat into electricity is even less surprising.

If we develop a more efficient way to turn heat into electricity it won't be "a new way to make energy" it will be "a new more efficient heat engine"

[–] thatKamGuy@sh.itjust.works 6 points 1 month ago (4 children)

Because it feels archaic and inefficient, maybe?

We also have developed solar panels, wind turbines, hydro-electric dams as well as tidal/wave energy devices in the intervening years - so adding another method to boil water just feels “outdated”.

I’m not trying to cast judgement myself, just trying to explain that it feels like it’s just “vibes based”.

[–] rain_enjoyer@sopuli.xyz 13 points 1 month ago

Take a look at a modern supercritical steam turbine, this thing can run on 600C steam. there's nothing archaic about it (it can be more efficient as a part of combined cycle)

Hydropower and windmills are older than steam

[–] swab148@lemmy.dbzer0.com 8 points 1 month ago (2 children)

I had an idea for a dumb Star Trek meme, based on the episode where they explain how Romulan warp drives work, but extrapolating that to "it boils water and spins a turbine". Maybe one of the Star Trek memers can take this and run with it?

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[–] vithigar@lemmy.ca 7 points 1 month ago

Three of your four examples are already outputting mechanical energy of motion so don't need the intervening conversion step provided by steam.

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[–] ch00f@lemmy.world 4 points 1 month ago* (last edited 1 month ago) (1 children)

The problem is there’s an upper limit on how much useful energy you can extract from a heat engine.

https://en.wikipedia.org/wiki/Carnot_cycle

1 - Tc/Th

The only 100% efficient heat exchanger has a cold side at absolute zero.

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[–] Proprietary_Blend@lemmy.world 21 points 1 month ago (3 children)
[–] Klox@lemmy.world 18 points 1 month ago (1 children)
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[–] danekrae@lemmy.world 10 points 1 month ago (1 children)
[–] 5ibelius9insterberg@feddit.org 20 points 1 month ago (4 children)

No, wind is spinning magnets. Everything except photovoltaics and fuel cells is spinning magnets. (Everything with boiling water is also spinning magnets)

[–] bumblefumble@mander.xyz 4 points 1 month ago (1 children)

You could always spin some wire and let the magnets stay still if you wanna be different.

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[–] Buddahriffic@lemmy.world 3 points 1 month ago (1 children)

There's peltier devices, too, which use heat traveling via different metals and maybe some sort of sorcery to generate a voltage.

Also teslacoils use a different mechanism (friction I believe), though that's a static voltage.

In theory, you could translate a magnet through a coil instead of just rotating it to produce a current. Lol spinning a ring magnet through a rounded coil could be a different way of using spinning magnets (assuming it isn't already done).

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[–] Skullgrid@lemmy.world 7 points 1 month ago

It's also due to water being boiled. Just in a different, many steps removed manner.

[–] samus12345@sh.itjust.works 12 points 1 month ago

"I have an idea for a comic!"

"Is it you getting angry and sulking on the couch?"

[–] cornshark@lemmy.world 9 points 1 month ago (1 children)

What's the original comic?

[–] ThePyroPython@lemmy.world 8 points 1 month ago (3 children)

Well when you invent a new way to convert rotational energy into multi-phase AC please let us all know

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[–] Return_of_Chippy@lemmy.world 8 points 1 month ago* (last edited 1 month ago) (1 children)

Boil water and spin magnets

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[–] SubArcticTundra@lemmy.ml 7 points 1 month ago
[–] Skullgrid@lemmy.world 4 points 1 month ago

Turbine go vrrrrrr

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