this post was submitted on 30 Apr 2026
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Science Memes

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[–] AnnaFrankfurter@lemmy.ml 1 points 20 minutes ago

What about heat pumps they have efficiency in the range of 200-300%

[–] JATtho@lemmy.world 6 points 3 hours ago* (last edited 2 hours ago) (3 children)

Power-line losses before your house, so a electric heater is only 96%-85% effecient. When the heating for bird feets is accounted, it's 100%.

[–] EvilHankVenture@lemmy.world 3 points 1 hour ago

Blaming the heater for losses in the power lines doesn't seem fair.

[–] GreenKnight23@lemmy.world 1 points 2 hours ago (1 children)

what if you're running it directly from a generator?

[–] JATtho@lemmy.world 2 points 2 hours ago (1 children)

If the generator is inside the house, 100%. But then you could just burn the fuel...

[–] GreenKnight23@lemmy.world 1 points 1 hour ago

you could just burn the fuel...

1000003471

[–] Ajen@sh.itjust.works 2 points 3 hours ago

You're assuming this heater is on grid power. We just need to power it by solar panels that are inside the house, under a skylight. Now we've got a 100% efficient heater, just don't ask about PV efficiency...

[–] BlackLaZoR@lemmy.world 1 points 2 hours ago

What about electro-magnetic losses?

[–] Tiger_Man_@szmer.info 12 points 7 hours ago

induction losses:

[–] spicehoarder@lemmy.zip 10 points 7 hours ago

The entropy machine has a 100% efficiency

[–] edinbruh@feddit.it 31 points 10 hours ago (2 children)

Isn't some energy still dissipated as light instead of heat?

[–] Noved@lemmy.ca 23 points 9 hours ago (1 children)

Which travels to a location, hits it and is eventually converted to heat.

[–] nexguy@lemmy.world 1 points 6 hours ago (1 children)

So not a heater...but the universe.

[–] psud@aussie.zone 1 points 4 hours ago (1 children)

Typically a heater is in a room, so any light doesn't need to go further than the nearby walls

[–] nexguy@lemmy.world 2 points 1 hour ago

But a heater produces heat and light. The light might turn into heat later but that's not heat from the heater. Otherwise everything is s heater and it's all part of the same heater... the universe.

[–] piccolo@sh.itjust.works 6 points 9 hours ago

When light is absorbed by surface, the material temperature increases and remits light at a longer wave, ussually in the IR spectrum. So its safe to say all light is heat enegry.

[–] cass27@lemmy.zip 24 points 12 hours ago (1 children)

Noise would be a small but non-zero form of heat loss that shouldn't contribute to temperature increase

[–] dz2@sopuli.xyz 15 points 11 hours ago

Noise would turn in to heat as it’s absorbed, so it’s just heat with extra steps. Same deal with lights

[–] Zerush@lemmy.ml 40 points 14 hours ago (7 children)

Also a question of optimizing its use

vgy.me

[–] mere@lemmy.blahaj.zone 1 points 6 hours ago (1 children)

noo get the oily greasy food away from technology 😭

[–] WoodScientist@lemmy.world 5 points 5 hours ago* (last edited 3 hours ago)

The resulting grease fire will increase the electrical power->heat conversion calculation to over 100%!

[–] sp3ctr4l@lemmy.dbzer0.com 9 points 12 hours ago* (last edited 12 hours ago) (8 children)

A completely valid pannini press, imo.

Like this is literally the 'modern problems require modern solutions' meme.

I've used older PC battlestations of mine as 'bonus' spaceheaters more than once, lol

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