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[-] Godort@lemm.ee 129 points 1 year ago

To be fair, the physics that makes refrigeration work does feel like you're manipulating primal forces like a wizard

[-] NegativeInf@lemmy.world 38 points 1 year ago

Do not upset Maxwell's demon when you're down there sorting the cold atoms from the hot ones!

[-] oce@jlai.lu 5 points 1 year ago

Did Maxwell contribute to thermodynamics?

[-] TheBat@lemmy.world 5 points 1 year ago
[-] prole@sh.itjust.works 4 points 1 year ago

It's hard to believe that there was a point in my life where I could have read that article and understood it for the most part.

Now it might as well be hieroglyphics. Like I can see that symbol is an eye, and that one is a bird, but don't ask me what that shit means.

I'm with you. My undergraduate degree was in Physics 35 years ago and all I have left is vague impressions of very general concepts. I'm quite certain that I would be unable to do even the simplest derivative or integration at this point.

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[-] GluWu@lemm.ee 120 points 1 year ago

There's a tank of cold inside. Its the primary export of northern European countries and sustains nearly their entire economies since the only other thing they can "make" is fucking rotten fish. Its important to recycle your AC every 3 years before it runs out of cold by throwing it into the ocean where it can return to be made into glaciers.

[-] DataDisrupter@feddit.nl 52 points 1 year ago

Well, because you didn't add a /s to your comment, some day it will end up as an answer spewed out by some LLM, as absolutely factual.

[-] nawa@lemmy.world 12 points 1 year ago

I see no downsides

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[-] Famko@lemmy.world 20 points 1 year ago

This anti-swedish sentiment makes you look like a Dane.

[-] Barbarian@sh.itjust.works 11 points 1 year ago

That's impossible. Everyone knows that Danes can't communicate.

[-] bionicjoey@lemmy.ca 13 points 1 year ago

Weirdly this is basically how refrigerators worked before refrigeration was invented.

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[-] Chivera@lemmy.world 68 points 1 year ago

Turn it around to cool the outside. Global warning solved.

[-] Daefsdeda@sh.itjust.works 36 points 1 year ago

Actually a more efficient electric heater. This is known as an heat pump, aka reverse AC

[-] ChickenLadyLovesLife@lemmy.world 11 points 1 year ago

Seriously, that would have to work better than those giant fans they're building offshore.

[-] filcuk@lemmy.zip 2 points 1 year ago

Ooh, I've always wondered what those were for. Makes sense.

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[-] snue@feddit.dk 55 points 1 year ago

this video from 'technology connections' explains it quite well ^^

https://youtu.be/_-mBeYC2KGc

[-] ocassionallyaduck@lemmy.world 9 points 1 year ago

I love how mad he gets at single duct in room units too. Rightfully so.

[-] captainlezbian@lemmy.world 47 points 1 year ago

Through the magic of the latent heat of vaporization

[-] sane@discuss.tchncs.de 30 points 1 year ago

i feel technologically connected right now

[-] salmoura@lemmy.eco.br 14 points 1 year ago

♫ thermodynamically smooth jazz ♫

[-] Holzkohlen@feddit.de 37 points 1 year ago* (last edited 1 year ago)

Heat pumps really are amazing tech. What if I tell you that this is also how your fridge works. Crazy, right?

[-] Honytawk@lemmy.zip 12 points 1 year ago

They are also one of the few things that are more than 100% energy efficient.

300% to be exact. Because it uses some natural phenomena that just needs a little jump start and then can be maintained with little energy for massive air movement.

[-] absentbird@lemm.ee 10 points 1 year ago* (last edited 1 year ago)

Some are as high as 510% efficient

[-] rbesfe@lemmy.ca 5 points 1 year ago

The vapor compression cycle isn't exactly natural, and the compressor still needs a bunch of energy to keep going once it's started.

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[-] And009@reddthat.com 3 points 1 year ago

Ah... energy doesn't work that way. You can't have a perpetually endless cycle with 100% efficiency in real world.

[-] Ibuthyr@discuss.tchncs.de 14 points 1 year ago

It's called a CoP, Coefficient of Performance. It essentially is a factor of how much electricity you put in and how much cooling power comes out.

Cooling towers can have a CoP of 12 and beyond, whereas compression cooling usually lingers at around 3 to 3.5. so at a CoP of 3 for instance, you could put in 1 kW of electricity and get 3 kW of cooling power.

[-] ShrimpCurler@lemmy.dbzer0.com 9 points 1 year ago

Well it's not creating energy out of thin air. But it is moving it. So you get more energy moved than the amount of energy put in.

[-] And009@reddthat.com 2 points 1 year ago

Sure but that's not the definition of efficiency, I'm sure it might be 5x more effective than traditional heaters of some sort from the power consumption perspective

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[-] hyhachi@sh.itjust.works 25 points 1 year ago

it adds heat to the system to make more cold. duh. global warming solved. stupid enviromentards.

[-] RecluseRamble@lemmy.dbzer0.com 5 points 1 year ago

So, if we all turned up the heat also during summer, the climate would cool down! Genius! Just don't go inside.

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[-] Ruthalas@infosec.pub 24 points 1 year ago

Shove the hot out the window. *taps head

[-] LordKitsuna@lemmy.world 19 points 1 year ago

Oh boy have i got a video you you anon!

https://youtu.be/7J52mDjZzto

It has an entire section at the start explaining how these magic cold boxes work to help with understanding their next evolution heatpump

[-] Dkarma@lemmy.world 16 points 1 year ago

"all of the sudden"

Disregard

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[-] pyre@lemmy.world 14 points 1 year ago

ICP frequenting 4chan?

[-] ramenshaman@lemmy.world 14 points 1 year ago

Wait until he finds out about refrigerators.

[-] werefreeatlast@lemmy.world 11 points 1 year ago

LOL 😅...so you got a cup of coffee ☕, you wait, it gets cold 🥶....how is that even possible?!!!

phase change refrigerant loops baby!

Technically it's a uni directional heat pump. But we're just abusing the basic laws of thermodynamics. Fluids when compressed, heat up, and when expanded, cool down. Compress it, it heats up, cool it down, and then expand it, and suddenly, boom sub ambient cooling has been achieved. (the phase change happens in between to maximize effectiveness/efficiency)

[-] nexguy@lemmy.world 9 points 1 year ago

Hot air goes out, cool air goes in. You can't explain that.

[-] robocall@lemmy.world 9 points 1 year ago

It's a trick. It costs money.

[-] Iheartcheese@lemmy.world 23 points 1 year ago

It turns money into cold. Transmutation.

[-] brbposting@sh.itjust.works 6 points 1 year ago

Yeah for whichever neighbor the extension cord is connected to

[-] yemmly@lemmy.world 6 points 1 year ago
[-] docoptix@lemmy.world 5 points 1 year ago
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[-] uis@lemm.ee 5 points 1 year ago

By boiling special magical water

[-] lowleveldata@programming.dev 4 points 1 year ago

You have to pay the bill so that makes sense

[-] nao@sh.itjust.works 3 points 1 year ago

who has a window like that

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this post was submitted on 07 Jul 2024
482 points (100.0% liked)

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