1006

submitted 3 months ago by MattW03@lemmy.ca to c/science_memes@mander.xyz

162 comments fedilink hide all child comments

you are viewing a single comment's thread
view the rest of the comments

[-] AnarchoEngineer@lemmy.dbzer0.com 267 points 3 months ago

Resistive heaters still suck though because Heat pumps give you 200-400% efficiency. So heating wise, “100%” still less than maximally efficient.

(Not a violation of thermodynamics btw. Heat pumps use electricity to move heat energy that already exists, so the electric power in is often significantly smaller than the heat coming out of the device)

[-] wander1236@sh.itjust.works 403 points 3 months ago

Did someone say heat pumps?

[-] BeMoreCareful@lemmy.world 164 points 3 months ago

I'm so happy this man nerded out about heat pumps for a few hours.

But now, all I see is inferior heaters.

[-] rockSlayer 69 points 3 months ago

It's the burden of knowledge

[-] M137@lemmy.today 10 points 3 months ago

Having been on long term sick leave for 15 years means you have to do something with your time and I spend a lot of it learning new things to various depths. I now understand why some (though not all) older people are angry: when you know a lot about a lot you see how bad many things are. There's so much inefficiency, shit design, shit quality, shit shit everywhere. It hard to not let it get to you.

[-] can@sh.itjust.works 1 points 3 months ago

And as things degrade you remember how it was.

[-] W98BSoD@lemmy.dbzer0.com 29 points 3 months ago

And this one is….. 1600 watts. Surely this “large” room heater will be……. Siiiixxxxteen hundred watts.

[-] Lost_My_Mind@lemmy.world 13 points 3 months ago

.......HOURS???

[-] cenzorrll@piefed.ca 44 points 3 months ago

Bro's got multiple, hour+ long, videos about various types of heat pumps.

[-] YellowParenti@lemmy.wtf 28 points 3 months ago

And somehow im riveted. Doesn't feel like droning on. I wish I could communicate like him.

[-] Orygin@sh.itjust.works 25 points 3 months ago

Hours of videos about dishwashers too

[-] UninvestedCuriosity@lemmy.world 22 points 3 months ago

This man taught us that heaters are indeed about as efficient as you can get in turning energy into heat through a little thing called resistance.

[-] Custard@lemmy.world 15 points 3 months ago

Hey that's the guy I see once a year at Christmas time!

[-] SubArcticTundra@lemmy.ml 3 points 3 months ago

Coming down your chimney?

[-] ViperActual@sh.itjust.works 15 points 3 months ago

No he'll be criticizing your choice of Christmas string lights, or lack thereof.

[-] ApathyTree@lemmy.dbzer0.com 14 points 3 months ago

His videos are why I got a heat pump water heater instead of a standard one when mine died. I figure in summer I can hook the exhaust duct up to my hvac and get a bit of free air conditioning out of it, since I don't have AC yet. Tiny extra bonus piped straight to my bedroom.

[-] mceldritch@lemmy.world 8 points 3 months ago

I came here to see a picture of this man.

[-] humble_boatsman@sh.itjust.works 3 points 3 months ago

Name? Favorite link?

[-] LetThereBeNick@lemmy.zip 2 points 3 months ago

TechnologyConnections yt channel. I see his video on dishwashers mentioned a lot.

[-] TheTechnician27@lemmy.world 70 points 3 months ago* (last edited 3 months ago)

Resistive heaters still suck though

Resistive heaters are much more portable and flexible. (edit: and quiet)
Resistive heaters are a viable backup when heat pumps fail in extremely cold weather.
Resistive heaters are less money upfront for if you only have to use them occasionally.

One is not directly beneath the other. Both have their place.

[-] AnarchoEngineer@lemmy.dbzer0.com 23 points 3 months ago

Fair enough, do we need to extend this heater solidarity to combustibles as well?

I mean technically they’re infinitely electrically efficient if you don’t use electricity to start them lol

[-] sem@piefed.blahaj.zone 21 points 3 months ago

For niche cases like when you're on a camping trip and made a campfire

[-] SpongyAneurysm@feddit.org 16 points 3 months ago

Strictly speaking that's not efficiency, but a coefficient of performance.

And funny enough the work energy doesn't even have to be electricity. It's actually mechanical energy, that is required and you could even power a heat pump with a steam or diesel engine.