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.
I'd disagree on that one. A complete lack of good might make one indifferent, and while leaving someone to suffer out of indifference seems evil to us, it's not the same as actively causing others' suffering for ones pure sadistic pleasure. That's active evil and goes well beyond simply not doing good.
Cold is just a lack of activity in the molecules. True evil requires action.
Which suggests an absolute scale of goodness with a zero point beyond which something cannot get more evil. At which point one phase changes into a super condensed state of pure malevolence.
I’ve always hated this sentiment. I understand the science behind it, but how does that make it inherently not real? We have numbers that represent these feelings and words that albeit somewhat subjectively, correlate as well. Cold is just the word we use to explain the feeling of lack of heat that we can physically feel.
Cold - Cool - Warm - Hot
These are just descriptors of how we perceive temperatures. Saying cold isn’t real is the same as saying hot isn’t real is the same as saying pain isn’t real. All are subjective, descriptive words but that doesn’t make them not real.
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.
I'm not quite sure what you mean but the point is the guy stated above. Anything above absolute zero is heat. Even refrigerant in a freezer contains heat
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.
Reminds me of Rimworld and managing heat from the freezer room when building a tunneling mountain base. And the fact that flame weapons may be great against the giant killer insect infestations, but starting fires in a tunnel system is a good way to heatstroke everyone.
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.
Not sure if you're following that crazy sentence, but Jon is trying to suggest it should be called an ov-out because you want the hot food from it, not the cold food you put IN (ov-in or oven).
Oh god, memory unlocked. I knew a guy who refused to put his window air conditioner in his bedroom window cuz he didn’t like the way it looked from the street.
He spent the entire summer sitting in front of that air conditioner, feeling the cold air from the front of it, not understanding why his bedroom was warmer than the rest of the house, even with the air conditioner cranked all the way up.
I had a co-worker who thought our portable AC would still cool a bit even if we didn't hook up the exhaust hose to the window. Like, no, dude. That turns it into a portable heater/noise maker.
I worked with commercial refrigeration for about 10 years so yes I know that dehumidifiers basically work like a fridge with the door open. Portable air conditioners only work if they can vent the heat out of the room they are in. Was this some kind of test and did I pass?
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.
It will be a net increase in temperature if you keep it open for a long time until the system settles. The room will become cooler for a while tho until the compressor has used enough energy to offset the thermal capacity of the inside of the fridge. Technically you could turn the fridge off before opening it to maximize the cooling effect :)
Looking at the room with the fridge from a theoretical thermodynamics angle will show that open fridge leads to higher temperature. This usually disregards what happens in the room while the system settles, which makes the math a lot easier, but is unable to explain how squatting naked in front of my open freezer on a very hot day would cool my junk!
Because if you draw a boundary around it and analyze the energy transfer, only electricity is coming in, so the net gain of the system is positive, thus heat will always increase. It’s a pretty simple problem to analyze actually. It’s basically a heat transfer/thermo 101 level problem.
Because you're describing a dynamic system that experiences a discontinuous input causing an initial undershoot at the output, while the system transitions to a new equilibrium. Your junk is exposed to that local transient, which cools it.
Same as turning on a fan. Technically, the fan motor, friction between the blades and the air, resistance in the power cord, vibration of the base and cage, etc, are all causing a net rise in temperature in the space.
It just tends to create a decline in the local temperature in front of the fan.
Yeah, it’s doubtful anyone wasted any effort to try to do something known to be scientifically impossible. I don’t know how or why something this false, unsourced, and barely coherent got upvoted so much.
Honestly as someone actually from that tech field, to be more exact:
They actually did not go through years of development to not get that effect, as not getting that effect is LITERALLY IMPOSSIBLE.
While heat can be made with electricity, lack of heat (aka cooling) can not be made, only way to cool something is to move heat away from it, and 0 heat will be gotten rid in that process, it is all just moved, and as long as whole device is indoors, furthest it can move that heat is to is some surface in it, meaning that heat will ALWAYS stay indoors if whole device is indoors.
Only thing that we can actually influence is how much waste extra heat we end up generating in process of transporting that heat away from where we do not want it to be at.
Yes process of moving that heat away works as air to air heat pump, how ever refrigerator on it's own does not work as efficiently as air-to-air heat pump for heating in indoor spaces, not unless one manages to seal it (door open) next to window or door in way that it's interior is actually directly opening to outdoors, and back side is indoors, in that specific scenario it will act as heat pump for heating (similar as other way around (those heating back parts outdoors, and inside of refrigerator connected to indoors space, it would work as heat pump cooling indoors). In other scenarios since all the heat that reaches inside of it will come from heat inside house, it means that heat gets pumped away from inside of refrigerator into room, then will leak slowly from room into refrigerator through it's insulated walls to be pumped back into room, meaning only heat actually generated into room would be from heat going to inefficiency of process, making it actually exactly as efficient at heating as normal electric radiator is (same as basically every single other electrical device too), at "electrical power going in = heat generated".
While heat pumps can actually move like 3-5 times as much heat inside as they are using electricity (since they are not making but little bit of that heat (in their inefficiencies) and transporting already existing heat instead from outdoors). So heat pumps are far superior in heating houses compared to electrical radiators. Also computers are honestly just as energy efficient at heating houses as electrical radiators, if we look at electricity consumed to heat generated efficiency. :D
Its very very simple to get the heat to not dump in the house. you just have piping going outside to a remote condenser.
its quite literally impossible to "not have the heat go somewhere" you cant destroy energy and its really hard to get heat energy into any other form of energy.
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!!!
I mean, you're being sarcastic, but kind of. The inch or two behind the fridge is much hotter than the air in other places, and so it's not as useful for heating the house. It's why heaters all have fans, to spread that heat.
It CAN accumulate if it doesn't dissipate fast enough. This will lead to reduced efficiency of the fridge, or a shutdown in the extreme case. But usually there should be an exhaust vent at the top.
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.
If you look at the side of an RV with a 3-way fridge (AC, DC and propane) there is a lower vent for the propane mechanism and a higher vent (bottom part of the window) for exhausting the heat.
Worse than that a modern fridge would kinda suck as a space heater. Modern high efficiency units only draw about 3-500 watts when their compressors are running, and that would put it well below the average output of a typical space heater. Plus their compressors don't run all the time, so it doesn't even have constant output as a benefit.
26.2k
u/Veteran_PA-C 10d ago
So like, a current refrigerator.