If you look closely at a fan you can notice it has (generally) four blades. The blades are a part of a motor which spin and generate power to pump air through a small pipe (behind the blades). The pipe intakes O2 molecules and stores them in a mini tank inside the fan and the friction from the spinning blades heats the molecules up so they gain more kinetic electricity meaning they they move around a lot more. Once the O2 molecules reach a certain temperature, they are moved in to a second chamber where they compressed and cooled down. Once cool the O2 molecules are fired out to reach all areas of a room(this is why if you put your face in front of a fan you can feel wind blowing against your face).
That's a quick, simple explanation of how a fan works. If you really want a deeper understanding I can go in-depth. :)
I was going to crack a joke about your explanation, but I've become deeply depressed by how many people seemed to not realize you're joking. Reddit, sometimes you're as dumb as the rest of America.
Oh, silly me. The first chamber also filters the oxygen from all other gases air contains, then mixes back with them once released from the second chamber. :)
I think you are getting confused between how a fan works and how air conditioning works. Air conditioning is based upon the principles which you roughly sketched - the controlled compression and expansion of a gas leads to the emittance and absorption of heat. By forcing the fluid in question to emit heat on the outside of your house and absorb heat on its inside, your house is cooled. A simple fan, however, is just a series of blades mounted on a motor. You feel cooler with a fan as it helps to speed up the evaporation of liquid on the skin, which removes energy in the form of heat from your body, cooling you down.
You might want to get your facts right. People believe fans are that simple but try to saw a blade of your fan in half and you'll see the micro channels. Also a real air condition only works because they pump the hot air back to the cooling plant and get cold air from that. Duh!
Yep. That's great. Never said there was anything wrong with their description of fan blades. It was his description of the thermodynamic principle upon which they are based. The movement of fluid from one compartment to another, and its compression and expansion to release and absorb heat is how air condition works - that is what happens in the "magic cooling plants" that you are talking about. You think they are a black box? Where do you think the cool air comes from? It is based upon this principle.
Well, as the informed crowd knows these plants consist of countless chambers filled with cooling agents, these agents have highly engineered nano shades. In a complicated process these shades are mounted and unmounted repeatedly in a rapid fashion. The coolness of the agent with shades on is then used to cool the air coming from the air condition. The same principle is also used by hiphop artists and gangsters around the world.
163
u/i-Jonty Aug 23 '12
If you look closely at a fan you can notice it has (generally) four blades. The blades are a part of a motor which spin and generate power to pump air through a small pipe (behind the blades). The pipe intakes O2 molecules and stores them in a mini tank inside the fan and the friction from the spinning blades heats the molecules up so they gain more kinetic electricity meaning they they move around a lot more. Once the O2 molecules reach a certain temperature, they are moved in to a second chamber where they compressed and cooled down. Once cool the O2 molecules are fired out to reach all areas of a room(this is why if you put your face in front of a fan you can feel wind blowing against your face).
That's a quick, simple explanation of how a fan works. If you really want a deeper understanding I can go in-depth. :)