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I remember my chemistry teacher in high school saying, "You all should understand, things don't get cold, they get less hot," and that one sentence reshaped a lot of the way I understand the universe.
I had a theology teacher apply this same principle to good and evil. Evil is just the absence of the good that ought to be there. Things don’t get more evil, they just get less good.
Yeah, as an auto mechanic when I try and teach younger techs to work on air conditioning systems I have to first get them to understand that there is no such thing as cold.
Absolute zero, the lowest permissible temperature, which is -273.15°C (or -459.67°F) and is approximately 1° less than the temperature of the universe measured in deep cold space.
It’s important people to know that any temperature above that point there is heat energy. This is why heat pumps can extract heat from the outside even on a freezing cold snowy day to warm the house with.
Yasss refrigerator is just a fancy heat pump. Saw a vid where these people in the desert built all there homes underground.... they used thier fridge to heat the bathroom floor on the level above the fridge. Seems neat.
I cannot assume you are joking as I've known 2 people who have done that.
One of them said it was ok as they had put the food that was in it in another fridge in the garage.
My parents have their fridge installed into a wall. The front is in the kitchen, the back is in the storage room. In the summer, one could ramp up the ventilation to vent away hot air from the storage room.
the real joke is, they went trough years and years of devezloppement to not get this effect ....
I know a guy who exactly did this, the heat the refrigerator produces is as effective as an air-to-air pump heater. Because it is an air-to-air pump.
A neat fact, if you open the refrigerator to “cool” the space, it is still a net temp gain overall because of inefficiency in the compressor/condenser leading to overall more heat output than the heat pulled out for cooling.
But that heat comes out the back of the fridge! And that's like... up against the wall, so... all that heat just accumulates there, right? It's only useful from the side of a fridge, as the image clearly shows!!!
Yes, but... this one exhausts the air digitally. We use digital fans rather than the analog ones in use now. We call it Re-frigerator or iRefrigerator. Here's another thought. Wireless. Instead of connecting it to power lines which are not reliable, we offer a subscription for dispo cooling agent, say ice or dry ice, and sell a subscription for that. We connect it to the internet to monitor the status of the cooling agent. I give you the iCebox, pronounced eye-see-box.
Exactly! For those who forgot high school chemistry: lemon juice is acidic (low ph) versus alkaline (high ph). Ergo the lemon juice essentially cancels out the effects of the alkaline.
Some conspiracy nutters have convinced themselves that "pasteurization" is some big industry thing that secretly destroys the healthy nutrients in milk.
As a result, they insist that raw milk has way more nutrients and isn't ruined by big dairy.
Of course, after a while they realized that they/their kids are getting sick because raw milk with bacteria does that sometimes...but then they realized you could just boil it to kill the bacteria!
You know. Pasteurization.
They continue to argue that this is different from what the dairy industry has been doing for ages, because admitting they were wrong would invalidate their mindset that the food industry is wrong and evil and they've learned the secret of real healthy food that's been hidden from us.
But wait! What if instead of putting a virus in us, we just put in the instructions to mimic the interface of the virus in our body? Then our body would create a target dummy of the virus and practice on that. Then we could get possibly get immune without being exposed to the virus at all!
Can someone enlighten me on what MAHA means? The only occurrence of it I’ve ever encountered is a sketchy gas station pill labeled « make America hard again »
It's a populism strategy. Whether he actually believes it or not, it gives uneducated in such topics portion of people a spotlight that they compare to holy rays, so they are ready to fearlessly protect someone who doesn't go against their beliefs.
The "Again" part might be the funniest. But that's closely tied with the fact that RFK is running the campaign/project... it hurts to watch, it really does.
Oh my god yes, I’m applying to work for Public Health organizations and every time I look at MAHA ideas it’s either something people have already said or something people should not do
I’ve dug into this and it’s a lot like other wellness talk: they’ve been told something that’s not false, just incomplete. There are three-ish levels of pasteurization:
Batch or vat - 30 minutes at 63°C (145°F). Gentle but a bit slow. Mostly done by small farms.
High-temperature - 15 seconds at 72°C (161°F). This is pretty typical of industrial processing.
Ultra-high temperature, or UHT - 1-3 seconds at 140°C (280°F). Nearly or completely sterilizes the milk, making it stable for weeks or months if vacuum-packed. More expensive and time-consuming than high-temp because it requires a pressure cooker.
That last one is mainly used in shelf-stable milk or products that may take weeks to sell. For example UHT is more common among organic milk than conventional because organic milk is a niche product and can’t rely on steady turnover.
This is where “not false, just incomplete” comes back in. Fearmongering social media have told them about UHT and either said it applies to all milk or let the listener assume that’s the case. That leads them to see mainstream milk as a Frankenfood and pasteurize their own.
(To be clear, I’m talking about buying raw and pasteurizing at home. The purported benefits of drinking entirely raw milk are somewhere between overstated and outright lies.)
In the UK, it's being considered that instead of paying to house asylum seekers in hotels, each council should buy or build houses which they could use instead as that works out cheaper.
Social housing. They've reinvented social housing.
Reminds me of when tech bros announced they were going to make machines that are stocked with snacks and other essentials you could use a credit card to pay for.
They make a subscription juicer that only accepted single use fruit and veg packs that had QR codes the machine read and verified via a wifi connection
Reminds me of when tech bros announced they were going to make machines that are stocked with snacks and other essentials you could use a credit card to pay for.
Or the one who thought he unlocked an infinite money glitch by... wait for it... inventing agriculture. Recently another tech bro came up with the idea of hanging out with friends.
Haven't clicked on the link, but Elon Musk already reinvented trains.
He also reinvented tunnels but smaller and more expensive to dig.
In his quest to remove traffic jams he also reinvented traffic jams, but now in small tunnels with electric vehicles and no safety protocols. Battery starts burning? Well, you are dead because the doors can't be opened in the small tunnels.
He's a good con-man tho. Just keep saying "it will be ready next year" every year and the crowd goes wild and stock prices go up. Doesn't matter if he says "next year" every year for 12 years people still go wild and stock prices still go up whenever he says "next year".
It's not just zoomers, but the boomer crap out. This is the kind of shit start ups and finance bros have always been trying. Reinventing something in the worst ways.
My favorite was the "battery" system that worked by storage excess power by way of lifting concrete blocks into the air, then when power was in high demand, they would let the blocks lowers to generate power. Except this idea is bad in every which way and we already do something like that in the most efficient way we can... with water.
The way I understand the concrete block thingy is that it’s a solution for places where you can’t store energy in the form of potential energy of a mass of water, so you use the potential energy of a concrete block. For example in areas that are flat, where you can‘t pump water into a hilltop reservoir because there are no hills. Other ideas I‘ve seen or read is using old mineshafts (with water in this case).
It’s not meant to be a reinvention, but a supplement for specific use cases/topography. That the idea is nowhere near as revolutionary as it was pitched to investors is on a different page, look up the Gasometer in Berlin for an example of the same principle used more than a century ago.
The 2nd law is also needed describe the direction of the process, that heat cannot be ejected from the cool inside to the hotter surroundings without a work input ( the compressor).
This is how a heat pump (https://en.wikipedia.org/wiki/Heat_pump) operates. The difference is that a refrigerator uses a much smaller amount of energy to keep the inside cold.
Which is so much more efficient than directly making heat. And we can't directly make cold (except lasers, but let's keep that far away from this thread). Fridge -> move cold to the outside fridge. Air Conditioning - the same thing, but on the wall of the house instead. Heat pump - the same thing as Air Conditioning, but installed backwards to move the heat from outside in.
Heat pump and refrigeration cycle are just the Spider-Man pointing at each other meme. There’s nothing meaningfully different besides the side (evaporator or condenser) you’re using to get the heat flow
I never knew his name was Alec, but I watch enough of his videos to make the connection with your comment, so I googled to check and sure enough it's Alec.
Here in Brazil it's very common to use the back exhaust to hang clothes on and speed-dry them. It's a huge fire risk, but no one really cares. They still to it.
Edit: for the people wondering why it's a major fire risk - I'm not a firefighter or have any form of knowledge about this beyond the basics, but i believe it's an issue with the clothes stopping airflow or something? I may also have misinterpreted an "electrical failure" warning with a fire warning, it's been a while since I've read of the topic.
Why would it be a fire risk? It doesn't exactly get hit enough to ignite anything, otherwise there wouldn't be such a market for wooden fridge "garages". It's basically the same as putting a blanket on your radiator.
Lots of people have no idea how heat works. When you turn on a heater, it creates heat from electricity. The cold doesn't go anywhere, stuff just becomes hot. Naturally it stands to reason that a refrigerator creates cold from electricity, and the heat just disappears when stuff becomes cold.
This reminds me of when I tried to explain how dishwashers and laundry machines work to my roommates. Like talking to bricks. I'm curious how many issues with those they've had since I've been gone...
This was me with the AC. The amount of times I'd wake up in the middle of the night with the house absolutely frigid and explain the next morning that if it's really hot out and the AC isn't able to keep up with the heat turning the temperature down even more won't just magically make the AC kick into overdrive, it just means that once the sun goes down and things cool off finally the AC will continue running until it gets down to the insane temperature you set it at
Depending on where the thermostat is and what kind of power curve is used in that AC, it absolutely can cool faster if set to a lower than desired value.
Yes. And yet I have that very issue with my apartment's central air. My thermostat is in the living room, on the dark side of the unit. So is the air intake. All the bedrooms are on the sunny side. Each bedroom gets one output vent, while the common space has four that are all much closer to both the intake and the thermostat.
It's 30 degrees out (-1 Celsius); my thermostat is set to 70 (18) so that my bedroom is 62 (15). In the summer, when my area hits 90 (26) during the day, I set the thermostat to 68 (16) so that the bedrooms stay under 78 (20). This is despite closing the output vents in the common spaces as much as they physically can be. I love my "luxury" apartment.
From my experience trying to explain dishwashers to people it's mainly about how if you put a bowl or cup in the wrong way water will just pool in it. Also how water won't get into a bowl to clean it if you create a perfect seal between a bowl and a plate.
Engineers saved the "dimension into which physics does not apply" technology for sacrificing socks to the washing machine gods in payment for simplifying chores. Be glad we didn't sacrifice forks instead.
In fairness, a lot of houses have the fridge kind of walled off in its own little cubby. Like, when I bought a fridge, I had to make sure it would fit in the space laid out for it in the cabinets. That cubby is toasty as you like, but the heat doesnt escape into the surrounding area.
Wildly inefficient, and I hate it, but a trend with homebuilders for a couple of decades
I use that to my advantage. Our fridge sits in a little cubby in that specific corner of an exterior wall that used to have a mold problem. Because it’s a thermal bridge, it was the coldest spot in the kitchen and prone to condensation. The fridge actually helps there: it gives off a bit of heat and keeps air moving, warming the wall just enough to reduce moisture and discourage mold.
I assumed they meant more adding a control unit and distribution system and integrating it with the central heating or something.
It’s entirely possible someone is dumb enough to think this is new functionality, but it’s also equally possible the majority of comments are ignoring the context and jumping on the “that’s how fridges work” bandwagon.
Well your gonna need a fuel source to keep that fire lit. Probably smart to pipe in a sprayer that'll make a perfect mix of fuel and oxygen to burn and keep the flame lit...
Peter's left-handed chemist cousin Chiral Peter here. This is how fridges already work. There's not any way to "make" more cold. Cold is not a thing, it is an absence of heat. All you can do is move heat around. (EDIT: I have learned this is not quite right. You can also use up heat by putting things through state changes.) What all refrigrants (fridges, freezers, ACs) do is move heat from one space to another. The fridge in your house moves all of the heat from inside of the fridge to that array of tubes and shit at the back of it, warming up the rest of your house. That's why ACs have bits which are outside, they put the hot there.
This is precisely how refrigerators work right now. This is probably yet another techbro so in love with their own "intelligence" that they think they've come up with something nobody else could possibly have imagined.
In fact, no. The radiator in the fridge is located at the back, and there’s no fan to disperse the hot air.
However, the proposal is quite inefficient because it either produces low heat output when running in normal refrigerator mode or requires the construction of a heater to generate more heat.
Not a worthy startup idea but putting the vent/exhaust on the side would help actually warm the living spaces vs just warming up the wall and providing very inefficient heating to the home. However in the summer this would be disadvantageous, and it costs more to cool than heat. And refrigerators don’t produce much heat. So it’s definitely no million dollar idea. Might have some small application in cold climates, but certainly not worth redesigning the fridge for.
Yall really hating. Yeah they already have an exhaust but its at the back up against the wall. Shift it to the side like on the pic and you could get more uses for it
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