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Comments
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Not true, it is true that it is heating at %100 efficiency that is to say %100 of the electrical energy is being transferred into heat (although technically some is being transferred into IR light not necessarily what you want) but your goal is probably not to simply create heat your goal is probably to heat the room or at least yourself and their is plenty of waste heat going off into space somewhere also you can achieve more than %100 heat transfer by compressing the external air's heat we call these heat pumps and they can achieve +400%. The key word is efficiency.
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It’s always wild to me that 100% heating efficiency is actually kinda not great. Also the fact that we can use the heat from air that is colder than what we want in order to generate more heat I mean that’s just witchcraft.
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🤓 ACKSHUALLY
It's not possible for a heat pump - or anything - to even be 100% efficient, let alone 400%. Efficiency is measure of how much of the input energy gets converted to useful output energy, and since heat pumps don't actually create heat the useful output is the compressor's ability to pump refrigerant about. The Coefficient of Performance - the ratio between energy put in and useful work done - is 400% for a heat pump (give or take).
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I always like to muse that in terms of electronics the heat is caused by resistance to current and that heat is usually considered inefficiency, and since no other load exist or work is done that means heating elements are about -100% efficient.
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ir light is heat dawg
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If you want to make heat, start up a gaming PC. At least the energy will go to doing something before it gets turned to heat.
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I legitimately had to buy a heater after I stopped regularly using my desktop because it was what was keeping my room warm.
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At that point you might as well run Folding@home on your PC just to act as a heater. It's literally a win-win for you and for society.
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running FFXI and later WoW on my first rig (many moons ago) allowed me to keep my room nice and balmy all winter, to the point where I'd leave a window open for much of the day during snow-supporting temps and it'd still be toasty
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gaming pcs are a fuck cause they never get hot enough to warm up a cold room but they definitely make a hot room even hotter
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mine is good for a few degrees in the winter but i'm in a small room with the door shut
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7-10 degree difference for me on cold days but thats 2 gaming PCs all day.
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or folding@home
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I don't have a source handy, but someone attempted to heat their apartment with computers and ended up spending something like >$1000 in utilities that month.
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Resistive heat is expensive - that's why heat pumps are so good.
In practice, they would have gotten identical results with any electric resistive heater. Fans, oil filled, ceramic, etc. all largely doesn't matter as it is Wh of electricity to Wh of heat. -
They must have overshot, then. Computers are 100% efficient space heaters that produce math as a byproduct.
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Everyone here is talking about heat pumps for being more efficient. pfft
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Boo, get heat pump you loser
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Most of the time, we consider heat output to be inefficient. It only works here because heat happens to be its purpose.
You could say it's 0% efficient.
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Ground-source heat pumps seem like they could be the new hotness. You don't have to dig very deep before the ground is a constant temperature, so that can be used to increase the efficiency even further in extremely hot/cold weather.
Tech Ingredients did a nice little DIY experiment with it.
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Pfft. Making things hotter is easy. The fact that we can regularly make things colder and hold them at that colder temperature is what's actually impressive in thermodynamics
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Pfft the absolute human hubris to hold up these entropic sleight-of-hand tricks as impressive. Nature abhors a refrigerator. Heaters are the ultimate power in the universe.
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Well, heat pumps are significantly more efficient than traditional heaters because they move heat rather than generating it. A heat pump can deliver three to four times more heat energy than the electrical energy it consumes, making them 300-400% efficient.
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rather than
generating itconverting it from power
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People say efficient without saying efficient at doing what with what.
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Make those heating coils out of superconductors and it'll be even more efficient.
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Pfftt. Splitting wood is peak heat thermodynamics. And I can attest it keeps you warm down to -40F.
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My cat agrees.
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So does our Colombian red tail boa! :D
EDIT: That's just a little heat coil with a fan though in the cold months. Be very careful and research heavily before blasting IR light at reptiles!
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That is how the power supply of my Laptop look like, playing Cyberpunk 2077 on my laptop.
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Winter is gaming season.
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I was testing the AI image generating capabilities of a M1 MacBook Air 16GB.
It shuts down at 113°C (235°Freedom)
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Turn that entropy up to 11, boi!
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(As a nerd) I came here for the nerdy comments.
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So hot.
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You're objectively wrong here.
Refrigeration cycle scoffs at your mere 100% efficiency
Nah this thing puts out light and probably vibrates as well, so not even 100%.
Well ultimately it all becomes heat. Maybe a tiny amount escapes a window or something. So we could say 99%.
But heat pumps still reign supreme, at least until it gets super cold.
Light is just heat energy
Refrigeration just moves heat, it does not create it.
Why create heat when you can just steal it from somewhere else, though
In terms of "use electricity to make heat" it still trounces resistive heating. This whole thread is arguing about the definition of efficiency.
It would end up creating some due to inefficiencies, which would contribute to the heat at the end.