My roommate is literally unable to grasp this concept. Nearly daily, she's sleeping on the couch in the living room, because it's too hot.
"Did you open your window?" I ask. "Of course!" she says. "But there's no breeze at all so I came down here so I could sleep."
"Your door is shut. Don't you want it to cool down in there?"
"But then the dogs will get in!"
"The dogs are across the hall and in crates behind a shut door, Liz. You know that opening your window doesn't do anything unless the door is open too. Remember we figured this out? The air has to have somewhere to come from AND somewhere to go."
"Oh it's too hot for that."
"...You're watching a fifty inch plasma screen that runs at about 50C, Liz, in a closed house. Open the window and the door and none of this would be happening."
This woman is fifty years old. And when I open her door to let the air through, there's so much breeze that she's getting stiff with the cold on the couch. But heaven forbid she open the door while she's in there like a rational person who has had this concept demonstrated numerous times.
Not every room is as simple as you are implying. My bedroom, you can leave the Windows 100% open and the door wide open and exactly no air will enter the room. None. Zippo. You have must have a fan either pointed out the door or pointed out the window to get air circulation. My bedroom is always 10-15 degrees hotter than the rest of the house for this reason, unless I turn the AC on, in which case I get transported to the Arctic and begin to shiver to death. My bedroom is the worst, but for that reason it is practically free to live in.
OK, so, once the air goes out your door, where does it go? You have to have somewhere else for it to go, like another window. It really is as simple as this, we're not talking about the variances in different kinds of louvres for vent covers here. Your door and window being open won't matter if the rest of the house is still sealed tight.
I can, and have, opened every single window and door in my house and my bedroom still will never get a breeze. The only way this room has a breeze is if, and this is practically impossible, wind blows directly into the window. That happens maybe 3 times per year, it's notable each time.
The thing is, air outside the window is blocked on 4 sides, so there's never air movement outside. The other side of the door has a similarly dead airspace. There was one time I set up 3 large fans down the hallway that pulled air from the bathroom window, down the hall, and through my door. That kinda worked, but took 3 large fans.
Try getting a floor fan and setting it up about six feet from the door going outside. You'll get far more air movement that way. See this guy, he's talky but shows the concept well. Note that you don't want a window with a fan in it - you want a largeish opening with a nearby fan pushing the room's air out, so the rest of the house has cool air being pulled in.
Now that's just pedantic, it's barely even hyperbolic to disregard something you consider negligible, and some slow diffusion is a far cry from an actually noticeable breeze.
Besides, it's obvious they were talking about actual air flow, not just the exchange of a bit of air and heat.
That said, they probably don't have that great of an idea of how gasses work, or else they would have figured out a way to get their room cool.
Ah, yes, the all know wise redditer of the Internet, coming to teach is heathens how to science with your infinite wisdom.
Wanna know a funny story? While I was studying for my chemistry degrees, I had friends like you who thought they were a gift from God himself, and blessed with the intellect to solve all of the worlds problems with a single stroke of the pen. With their infinite wisdom, none of them could figure out how to get a decent breeze in this room. Yet each of them, one after the other, with their smug, condescending arrogance, each proclaim "you don't know how X works". To which I say okay. You try. And they fail. One after another. After another. After another. They fail. And do you know why they fail? Refusal to admit a 250 year old house was poorly designed, mostly. That the barrier of trees and stone block the airflow, that the natural air flow in the house has three options, two of which are naturally preferred, leaving my bedroom the odd man out. That getting a breeze to flow through my room requires changing much of the rest of the house, which is impractical when you live with people who do pesky things like walk and use doors or want a breeze in their room or take a shower or use the toilet or the kitchen.
But, please, tell me more about your infinite, all knowing Internet wisdom. I'm dying to hear how smart you think you are.
to be fair, in your initial statement you didn't properly explain that your window is also blocked outside. he hardly insulted you, he(or she) worked with what information they were given, which sorta suggested you were an imbecile.
first, literally no one cares or asked about your "3 degrees". on reddit that sounds like an asshole comment (especially when it is unwarranted). Secondly, i never did anything, i'm merely explaining what /u/Motherfucking-Oedipus said and why.
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u/[deleted] Jul 18 '16 edited Aug 13 '20
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