Anon questions the magic box

2 years ago by 🍹Early to RISA 🧉 to c/greentext

Godort 132 points 2 years ago

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

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bradorsomething 78 points 2 years ago

You are literally pumping hot outside.

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PunnyName 48 points 2 years ago

While utilizing the physics of pressurized coolants that prefer to be gasses around your house.

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acosmichippo 22 points 2 years ago

so, magic.

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SorteKanin 15 points 2 years ago

Any sufficiently advanced technology is indistinguishable from magic.

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GissaMittJobb 20 points 2 years ago

And you can reverse the process, pumping heat inside instead, even when it's freezing outside! Magic, I tell you.

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NegativeInf 39 points 2 years ago

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

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oce 4 points 2 years ago

Did Maxwell contribute to thermodynamics?

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TheBat 5 points 2 years ago

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prole 4 points 2 years 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.

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oce 1 point 2 years ago

Thanks. I wonder why I didn't hear about him in thermodynamics but did in electromagnetics, maybe I forgot.

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JayDee 1 point 2 years ago

Material phase changes are like a cheat code for humanity. Reusable chemical handwarmers are also black magic. You just click a metal plate inside and all of a sudden it's a hot solid.

NightHawkInLight made a video showing how you can mix two different salts together and it'll create a packet that stays at 65 degrees for hours.

Video in question

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prole 1 point 2 years ago

Who needs magical thinking when you have thermodynamics?

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GluWu 122 points 2 years 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.

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DataDisrupter 52 points 2 years 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.

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Allero 17 points 2 years ago

Let's hope people won't get so reliant on LLMs and so uncritical they follow through

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nawa 12 points 2 years ago

I see no downsides

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ChickenLadyLovesLife 2 points 2 years ago

Do LLMs ignore the /s even?

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filcuk 2 points 2 years ago

They use sarcasm factually. It's more entertaining that way.

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Famko 20 points 2 years ago

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

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Barbarian 11 points 2 years ago

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

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bionicjoey 14 points 2 years ago

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

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sugar_in_your_tea 1 point 2 years ago

But instead of throwing out the refrigerator, you'd just add more cold to it.

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Chivera 70 points 2 years ago

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

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Daefsdeda 36 points 2 years ago

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

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Allero 21 points 2 years ago

Heat pump was one of the inventions I thought of in my childhood and was like "oh, it actually works and is good" as an adult.

Of course, the child version was along the lines of "what if we take fridge, put the cold end out and hot end in", but you see the point.

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Tryptaminev 13 points 2 years ago

So did engineers since decades. Just the fact that you get efficiency ratings of more than one in terms of primary energy input to heat energy provided should always have been a massive selling argument. If planned well you can get yearly averages of 400-500% energy output vs energy input.

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ChickenLadyLovesLife 12 points 2 years ago

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

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filcuk 3 points 2 years ago

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

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sugar_in_your_tea 3 points 2 years ago

They actually have a dual purpose, the second being killing seagulls.

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SatansMaggotyCumFart 2 points 2 years ago

I heard they kill whales too.

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snue 53 points 2 years ago

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

https://youtu.be/_-mBeYC2KGc

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ocassionallyaduck 10 points 2 years ago

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

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captainlezbian 48 points 2 years ago

Through the magic of the latent heat of vaporization

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sane 31 points 2 years ago

i feel technologically connected right now

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salmoura 14 points 2 years ago

♫ thermodynamically smooth jazz ♫

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Holzkohlen 37 points 2 years ago

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

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Honytawk 11 points 2 years 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.

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Aux 11 points 2 years ago

That efficiency metric doesn't really reflect what's going on. Of course moving stuff around is easier than heating it.

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Ibuthyr 1 point 2 years ago

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absentbird 10 points 2 years ago

Some are as high as 510% efficient

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rbesfe 4 points 2 years 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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Zink -1 points 2 years ago

Yeah I’m pretty sure my air conditioner uses more electrical energy than all my other appliances combined. Probably by an order of magnitude. No EV in my case of course.

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sugar_in_your_tea 1 point 2 years ago

Yup. I'm hoping my AC and furnace die around the same time so I can just replace both with a heat pump. Not sure if it'll save much on heating prices since both nat gas and electricity are pretty cheap in my area, but it can hopefully make maintenance simpler.

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Whattrees 2 points 2 years ago

A few years ago I replaced our electric furnace with a heat pump which also gave us AC. Overall the yearly bill went up because we now had AC, but winter months usage is almost half of what it was before. Only matching on the extra cold days where the backup heat kicks in.

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And009 -3 points 2 years ago

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

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Ibuthyr 14 points 2 years 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.

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ShrimpCurler 9 points 2 years 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.

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And009 2 points 2 years 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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KillingTimeItself 2 points 2 years ago

so technically, it's not generating electricity, it's moving heat from point A to point B, and believe it or not, 20f air still has a lot more heat energy in it than 0k air. So yeah, it's more than 100% efficient. Comparing it to electric resistive heating, which is producing the heat directly from electricity, rather than moving it around.

An electric resistive heater is 100% efficient, the efficiency of gas furnaces is measured similarly, though they hit about 90% eff, due to basic mechanics. Geothermal systems would also have greater than 100% efficiency as well, due to the fact that they just move fluid around, which is then cooled by the earth, (or warmed by it) though external heating wouldn't be.

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Waraugh 3 points 2 years ago

Why would they remove heat any differently, it’s the same concept cooling a fridge or freezer as a room. Am I too ignorant to understand why this is crazy because I want my mind blown.

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LazerFX 2 points 2 years ago

How about saying that a normal air con unit, with a few extra valves, can heat as well as cool - in other words, if you've got Aircon, you've got a full heat pump, just without a pipe to do the heating bit. The energy you're spending cooling your house could also be heating your water... For free.

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sugar_in_your_tea 2 points 2 years ago

Yup, just need to reverse the flow of the coolant. Or just... turn it around (don't actually do that, use a proper heat pump).

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Aux 2 points 2 years ago

Or it can heat your house during colder months.

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LazerFX 1 point 2 years ago

Yeah, exactly. If I had funds, I'd be switching to a heat pump.

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Ruthalas 26 points 2 years ago

Shove the hot out the window. *taps head

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FiniteBanjo 13 points 2 years ago

Literally how it works, too.

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IzzyJ 0 points 2 years ago

Technology Connections has a great video that goes in more detail. Basically an AC is a reverse heater

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FiniteBanjo 6 points 2 years ago

I disagree completely. Heaters rely on the inefficiency of power transmitting materials, the "heating element", to turn electricity into heat. The opposite of that would not be an AC, it would be a generator. If you want an actually good simplified explanation of an AC just check out my other comment HERE

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KillingTimeItself 1 point 2 years ago

the opposite of an AC would be a phase change driven generation plant i suppose. But the opposite of an AC in this semantic case would be a heatpump.

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FiniteBanjo 25 points 2 years ago

The air is hot because it's moving around a bunch.

The air gets fanned over some coils filled with coolant.

The coolant gets heated and starts moving around a bunch causing it to move through the coil through some insulation foam to the outside half.

Once it nears the end of the loop it has to go through the compressor.

The compressor squishes the moving coolant and now it can't move around as much, all the heat gets dissipated into the surrounding outside air.

The compressor lets the cooled coolant go back through to the inside.

Process Repeats with diminishing returns.

Wizard_Fucking_Magic

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hyhachi 25 points 2 years ago

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

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RecluseRamble 5 points 2 years 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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maniii 1 point 2 years ago

No yah dummy. Put the Room in the middle of the Earth and PUMP all the outside heat into the planet core!

BAM! Instant Arctic Weather in the middle of summer !

And BAM! Reverse it for the winter!

BAM! Mild Temps all Year round!

You can thank me later EnvironMentaLists!

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Glowstick 21 points 2 years ago

Ok, but here's a real answer. Have you ever sprayed a can of hair spray or wd-40 and the can got cold? That's basically the same process.

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RootBeerGuy 22 points 2 years ago

Install a 12-pack of wd40 in my window, got it!

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PunnyName 8 points 2 years ago

Turn it upside down, first.

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ChickenLadyLovesLife 1 point 2 years ago

I think whip-its are a much more fun way of teaching that concept.

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LordKitsuna 20 points 2 years 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

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where_am_i 10 points 2 years ago

ofc it's a technology connection video. Lemmy is the dude's biggest organized fan club

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LordKitsuna 6 points 2 years ago

Based Lemmy users just understand how good it is. I can't wait for his third half hour video about dishwashers

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ChickenLadyLovesLife 1 point 2 years ago

He has limits, though. I thought his abbreviated dishwasher video would be enough to convince my mother to stop using those stupid pods, but nope.

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maniii 2 points 2 years ago

Technology Conextras I think his other channel where he posts even longer form content. Fun for all the family.

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Dkarma 17 points 2 years ago

"all of the sudden"

Disregard

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Rai 1 point 2 years ago

In ye ole Enlysch, it was

“All of ye sudden”

For some raisin, “all of the sudden” just tastes better to me.

Technically “all of a sudden” is more correct.

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thenextguy 1 point 2 years ago

All of some sudden?

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hydrospanner 1 point 2 years ago

Some of the sudden.*

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thenextguy 1 point 2 years ago

Part of the Sudan

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ramenshaman 15 points 2 years ago

Wait until he finds out about refrigerators.

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boatsnhos931 14 points 2 years ago

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PlantDadManGuy 2 points 2 years ago

Well I love AC Momma! And she loves me too! And she makes my titties real perky!

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pyre 14 points 2 years ago

ICP frequenting 4chan?

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SatansMaggotyCumFart 13 points 2 years ago

Maxwell’s demon lives in there.

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lvxferre 10 points 2 years ago

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SatansMaggotyCumFart 6 points 2 years ago

The demon lets the fast ones out and the slow ones in.

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KillingTimeItself 12 points 2 years ago

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)

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nexguy 9 points 2 years ago

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

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robocall 9 points 2 years ago

It's a trick. It costs money.

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Iheartcheese 24 points 2 years ago

It turns money into cold. Transmutation.

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brbposting 6 points 2 years ago

Yeah for whichever neighbor the extension cord is connected to

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Sam_Bass 7 points 2 years ago

Physics, dog

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werefreeatlast 7 points 2 years ago

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

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docoptix 5 points 2 years ago

Magnets!

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BarbecueCowboy 2 points 2 years ago

https://home.howstuffworks.com/...

Maybe not far off.

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lowleveldata 5 points 2 years ago

You have to pay the bill so that makes sense

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uis 5 points 2 years ago

By boiling special magical water

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yemmly 5 points 2 years ago

Magnets

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DarkCloud 4 points 2 years ago

Didn't Einstein work on some of the compression technology that went into refrigeration? Pretty sure he had something to do with it.

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user134450 3 points 2 years ago

Nope, not compression tech. The Einstein refrigerator is an absorption refrigerator and these don't use compressors.

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nao 3 points 2 years ago

who has a window like that

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uis 2 points 2 years ago

Americans. Wider belly needs wider windows.

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Fizz 2 points 2 years ago

Its a placebo your room isn't actually cooling down. The power companies just want to charge you more money.

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greentext

@sh.itjust.works

This is a place to share greentexts and witness the confounding life of Anon. If you're new to the Greentext community, think of it as a sort of zoo with Anon as the main attraction.

Be warned:

Anon is often crazy.
Anon is often depressed.
Anon frequently shares thoughts that are immature, offensive, or incomprehensible.

If you find yourself getting angry (or god forbid, agreeing) with something Anon has said, you might be doing it wrong.

go to feed...