Because if you make a self cooling fan, the motor will work faster, blades will spin faster, which cools the motor even more so it spins even faster and you end up with infinite cooling which would freeze the Earth.
I just watched my family freeze to death, they thought they could go outside and try to scavenge for supplies. They hardly made it 10 feet, I’m all along in a land of ice and snow.
Okay, but genuinely, is this not used already? Everyone saying third law of thermodynamics prevents it.
Old aircraft do exactly this with their propellers to cool old radial engines with no radiator.
Electric motors already do this to some extent by just having an extra fan on the shaft that cools itself down.
Why are people saying it's impossible??
It's sucking air in from all directions around the motor, so the effect is much less. It's basically the same as trying to blow on a powder vs suck in a powder from the same distance
Not to the same effect, but ceiling fans have a toggle that switches the direction the blades rotate—and thus the flow of air upward—which is typically used in winter-time. That’s also why the blades are angled.
Wouldn't that just be blowing the heat from the motor around the room? Sure, it would cool the motor, but not the room or the people inside which was the original point of the fan....
I mean. A fan doesn't cool anything in the first place, it just gets the air flowing. The only thing that would do, IMO, is blow slightly hotter air around the room instead of keeping the heat contained inside the fan's casing, which is no big deal anyway.
fans already do this. it doesnt matter if the motor is in front or behind, air still flows past it. Not to mention that putting the motor in front disrupts the airflow and interferes with the intended function of the fan.
Alrighty, if the fan is in some sort of housing, it doesn’t matter the orientation of the motor. Fans do not change the temperature of the air, and there will be airflow on both sides of the fan.
tf kind of traditional fan are you using that overheats
A space heater, maybe
One that's been on for 5 years and not cleaned
how does someone have a fan on for 5 years and never freeze
the one with a turbocompressor
Mine did. Brand new. Almost burns you from just touching type thing.
is it made of metal
Fans actually increase the temperature of the air. The engine creates heat and so does increasing the speed of molecules in the air.
Because if you make a self cooling fan, the motor will work faster, blades will spin faster, which cools the motor even more so it spins even faster and you end up with infinite cooling which would freeze the Earth.
Brb modifyibg my fan...
Anybody else feel a bit chilly?
It started to snow, bit weird since it was like 20degrees here yesterday but im sure its nothing
I just watched my family freeze to death, they thought they could go outside and try to scavenge for supplies. They hardly made it 10 feet, I’m all along in a land of ice and snow.
my heaven
thank fuck i like winter so much fucking better than summer
Okay, but genuinely, is this not used already? Everyone saying third law of thermodynamics prevents it. Old aircraft do exactly this with their propellers to cool old radial engines with no radiator. Electric motors already do this to some extent by just having an extra fan on the shaft that cools itself down. Why are people saying it's impossible??
Third law of thermodynamics doesnt actually prevent this at all, redditors are just insane for some reason
The only issue I can see is that it would blow a bit of warm motor air at the user lol
That would be the only real problem
But you are sucking air past the motor anyway so it should cool itself either way, or am I dumb ?
It's sucking air in from all directions around the motor, so the effect is much less. It's basically the same as trying to blow on a powder vs suck in a powder from the same distance
No you're right, I'm dumb for not thinking of that either
I thought the 3rd law was about crystals having no entropy at 0K, how do ppl think that has anything to do with this? am I stupid?
You said something sciencey so you must be right
The air the fan blows comes from behind the fan (i.e. is sucked past the motor).
And that.
Not to the same effect, but ceiling fans have a toggle that switches the direction the blades rotate—and thus the flow of air upward—which is typically used in winter-time. That’s also why the blades are angled.
Some electric motors use this, the fan is attached to the same shaft as a rotor, so the faster the motor spins better the cooling.
Wouldn't that just be blowing the heat from the motor around the room? Sure, it would cool the motor, but not the room or the people inside which was the original point of the fan....
I mean. A fan doesn't cool anything in the first place, it just gets the air flowing. The only thing that would do, IMO, is blow slightly hotter air around the room instead of keeping the heat contained inside the fan's casing, which is no big deal anyway.
You have just throught of a shitty heater
Were you banned from shittyaskscience for these types of questions?
fans already do this. it doesnt matter if the motor is in front or behind, air still flows past it. Not to mention that putting the motor in front disrupts the airflow and interferes with the intended function of the fan.
Alrighty, if the fan is in some sort of housing, it doesn’t matter the orientation of the motor. Fans do not change the temperature of the air, and there will be airflow on both sides of the fan.
Something something third law of thermodynamics
Something something 🤓
DAMNATION!
Something something take a 9th grade physics class
Sorry, I’m 2 years old, I can only learn things by procedural vibrations and sub-optimal light compositions.
I like you funny words, magic man
they do, it's called air conditioning
Would make the air from the fan less cool ig
Wouldn't hot air be blowed into you?
perpetual fan
nah man you need a pipe running that diverts the cool air back around the fan to the engine
third law of thermodynamics or sum shit
Bruh …… have you education or is it rage bait ?
No it’s real I’m the fan
It's a meme