this post was submitted on 30 Nov 2025
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Science Memes

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[–] HenriVolney@sh.itjust.works 267 points 3 weeks ago (5 children)

Every damn power plant is a glorified steam engine

[–] hades@feddit.uk 159 points 3 weeks ago (19 children)

Except solar. And wind. And hydro.

[–] OrganicMustard@lemmy.world 145 points 3 weeks ago (5 children)

Some solar is also boiling water

[–] voracitude@lemmy.world 53 points 3 weeks ago (2 children)

And some of it is boiling salt!

Which then boils water, of course.

But some of it is electrons from photonic impact, no water involved! In the process of energy generation anyway. Statistically and perhaps somewhat ironically, the electrons from that photonic impact may well be used to boil water regardless... Humans just fucking love boiling water.

[–] blazeknave@lemmy.world 8 points 3 weeks ago (2 children)

Isn't salt like the main bees knees these days?

[–] 24_at_the_withers@lemmy.world 10 points 3 weeks ago

I don't know, but the Ivanpah solar power station near Primm NV, which is a set of three molten salt towers is reportedly getting decommissioned, removed, and replaced with PV panels. Word is PV technology had improved in efficiency and stopped in cost enough that the whole molten salt thing is no longer economically viable, at least in comparison.

[–] voracitude@lemmy.world 9 points 3 weeks ago (1 children)

Oh, absolutely. It's very cool technology! Molten salt is corrosive as fuck, but that just kinda makes molten salt solar towers even more awesome.

[–] BandanaBug@piefed.social 4 points 3 weeks ago

I'm assuming ceramics to the rescue?

[–] brbposting@sh.itjust.works 3 points 3 weeks ago

:D

Something all the way down something

[–] stormeuh@lemmy.world 12 points 3 weeks ago (1 children)
[–] fartographer@lemmy.world 4 points 3 weeks ago

They did fix that pretty quickly, but what a classic mad scientist blunder that would turn a well meaning researcher into a villain in any action hero film.

[–] Redjard@lemmy.dbzer0.com 7 points 3 weeks ago

And some fusion is direct to current in coils. The z-pinch style approaches mainly.

that's why IMHO it's more important to classify the core coupling mechanism (e.g. photoelectric effect, electromagnetic effect) instead of classifying the total energy in -> energy out types.

[–] psud@aussie.zone 2 points 3 weeks ago

My local solar steam generator was shut down years ago as it was no longer worth testing direct reflector material anymore — even if they had gotten perfect reflectivity they couldn't compete with photovoltaics anymore

[–] xx3rawr@sh.itjust.works 38 points 3 weeks ago (4 children)

Expect for solar, it's all just flowy stuff through spinny stuff: wind, water, steam. GRAAAAAAAAAA

[–] bjoern_tantau@swg-empire.de 19 points 3 weeks ago

Good ol' mill.

[–] M137@lemmy.world 9 points 3 weeks ago

Spinny stuff is basically the universe on all scales, so it makes sense. And that's fucking cool, IMO.

[–] rockerface@lemmy.cafe 8 points 3 weeks ago

Solar is very tiny flowy stuff through very tiny spinny stuff

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[–] Skullgrid@lemmy.world 17 points 3 weeks ago

And wind.

wind is just the effects of premade steam

[–] TachyonTele@piefed.social 6 points 3 weeks ago (1 children)
[–] hades@feddit.uk 23 points 3 weeks ago (2 children)
[–] someguy3@lemmy.world 45 points 3 weeks ago

Condensed steam.

[–] judgyweevil@feddit.it 17 points 3 weeks ago (1 children)

It's still the same turbine shit

[–] anomnom@sh.itjust.works 9 points 3 weeks ago

It’s all turbines, but quite dissimilar turbines.

[–] fullsquare@awful.systems 4 points 3 weeks ago (1 children)
[–] I_Has_A_Hat@lemmy.world 5 points 3 weeks ago (1 children)

And waves/tidal, but now we're getting into the really niche types.

[–] hades@feddit.uk 3 points 3 weeks ago

i knew i was forgetting something

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[–] magic_lobster_party@fedia.io 81 points 3 weeks ago (2 children)

We’re living in a steampunk world after all

[–] Slovene@feddit.nl 37 points 3 weeks ago

I'm a steampunk girl

In a steampunk world

It's not a big big thing if you steam me

[–] Cethin@lemmy.zip 10 points 3 weeks ago* (last edited 3 weeks ago) (1 children)

I'm going to be this person I guess, but the defining trait of steampunk isn't the use of steam alone. It's that energy is transfered by delivering steam to where it's used, rather than using it in-place to crested electricity. This means that steampunk machines operate off of some kind of kinetic energy, rather than electrical energy.

Basically, computers (and everything else) are spinning gears, not silicon.

[–] TachyonTele@piefed.social 5 points 3 weeks ago

Aaackually...

That was a really cool explanation, thank you!

[–] mossberg590@lemmy.world 37 points 3 weeks ago (2 children)

Readily available, low boiling point, non corrosive (relatively), and ecologically safe. What more do you want?

[–] MutantTailThing@lemmy.world 31 points 3 weeks ago

Also a ridiculously high heat capacity. It does make sense.

[–] ricecake@sh.itjust.works 6 points 3 weeks ago (1 children)

Molten salt. Lower pressure, higher efficiency, and I believe less reactive in the event of an uh-oh.

[–] mossberg590@lemmy.world 6 points 3 weeks ago* (last edited 3 weeks ago) (1 children)

The molten salt is used as the first step. It then makes steam through a heat exchanger. Molten salt is safer next to the actual reactor because water is not a good coolant in case of emergency.

[–] ricecake@sh.itjust.works 2 points 3 weeks ago

Oh, I was just joking around. What my water system is missing is molten salt.

Although for the sake of preposterousness, I'm going to suggest we use the molten salt to turn a giant water wheel.

[–] partial_accumen@lemmy.world 9 points 3 weeks ago (2 children)

Hydro isn't. Nor is solar photo voltaic, wind, or tidal, but yeah, nearly everything else is. In a combined-cycle natural gas or diesel plant half of the power generated isn't steam power, but the other half is.

[–] imsufferableninja@sh.itjust.works 21 points 3 weeks ago (2 children)
[–] thedirtyknapkin@lemmy.world 12 points 3 weeks ago (3 children)

aah, but it didn't say steam, it said boiling water.

smaller gas generators based on internal combustion engines don't boil water though, right?

[–] baines@lemmy.cafe 6 points 3 weeks ago

boiling just makes the water move, hydro just cheats

[–] JasonDJ@lemmy.zip 2 points 3 weeks ago* (last edited 3 weeks ago)

Electromagnetic induction.

Basically electric motor in reverse...instead of electricity powering the motor, the motor powers electricity.

But the trick is in "what spins the motor". In the case if ICE generators, it's usually a pulley off the crankshaft.

Or it could be moving water.

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[–] Agent641@lemmy.world 2 points 3 weeks ago
[–] fullsquare@awful.systems 2 points 3 weeks ago

for ccgt it's more like 2/3 for gas turbine, 1/3 for steam turbine split, even more uneven for diesel/steam because diesel exhaust is much colder

[–] Zaphod@discuss.tchncs.de 4 points 3 weeks ago

I watched a video a while ago about a new approach to fusion which uses induction iirc https://youtu.be/uRaQLZaaHWo