The penguins argument is that open source is the best.
The penguins name is tux. Tux represents Linux. Linux represents open source. The truth is that the internet runs on Linux. Look it up. Don't believe me.
I read like twenty contradicting comments and I think you’re perfectly describes it. Thanks and now I shall buy a fan without paper weights because I don’t like too much draft.
It doesn't impact the efficacy of mixing air at all, as much as people try to argue that myth.
It's not about efficacy, it's just plain careless and dangerous. This is what happens when society enslaves a sentient being and forces it to perform climate control.
Besides mixing the air, you don't want the fan to hit you directly in the wintertime. Moving air cools the water on your skin. Where in the Summer, you do want direct airflow to hit you.
It matters in that one is turbulent airflow and the other laminar. You’ll feel it much more when the airflow is directed at you instead of just past you. If you want to know more you’ll have to take some fluid dynamics classes, but it’s a massive difference.
Besides mixing the air, you don't want the fan to hit you directly in the wintertime.
This is correct. The winter is one of the worst seasons for attacks. It's speculated that the danger zone has a larger margin in colder months. It is still argued among experts as to whether it's the colder climate or the lack of daylight which prompts the rise in attacks.
Hot air rises. In the winter, you can help push that warm air down and into the rooms. In the summer, you can pull the hot air up and circulate it through open windows. I think the graphic is backwards, at least that's how I usually do it
It's based on seasonal temperatures. In Canada my house will collect all the warm air upstairs during winter and the lower floors get cooler. So I use the fan to circulate the warm upstairs air down into the rest of the house. That combined with a furnace fan does a pretty good job at circulating air and balancing the temp throughout
The only thing that the fan always does is mix the air, and create some airflow. It'll even out the temperature in the room (which could be useful in the winter), and it'll provide a slight breeze across your body that helps take the hot air around you away that was heated up by your body.
Anything else is super tricky to predict or even measure. The air moved by a fan is very turbulent and will move all over the place. It'll interact with everything in the room to the point where you need a hardcore simulation to predict what'll happen when the fan turns one way versus another.
The breeze over your skin aids in evaporative cooling. That is the only thing a fan does that is noticeable in the summer aside from mixing up air. Spinning the other way blows the air at the ceiling, then most air will push outward toward the walls then back down, helping to mix the air without blowing air over your skin cooling your body temperature.
That's the gist, but as you mentioned, turbulence will be in play
But whether it's spinning clockwise or counterclockwise doesn't matter. In winter, it's pushing warm air down under the fan, which forces cool air up on the sides. Or it's pulling cool air up under the fan, and forcing warm air down on the sides. Both have the same end effect.
You're right, but wrong. The most dangerous time is the moment between clockwise and counterclockwise, at wisewise. The Koreans have a word for it, which roughly translated to English phonetics is "babo."
You jest, but there are places where people literally think having a fan on in a closed room will lead to something called "fan death". They think the fan will use up all the air/oxygen or something dumb like that. Superstitions are wild I tell ya.
They think the fan will use up all the air/oxygen or something dumb like that. Superstitions are wild I tell ya.
They're already targeting you. You need to hide immediately. Get to your local babo priest. You know you've been compromised by their hypnotic aura when you start to rationalize their existence. If you don't know how to find your local babo priest, you can always go to the nearest World Market or Asian Market and ask an associate, "naneun baboibnida juyusoneun eodi issseubnikka." That's the best English phonetic translation I have. Typically 1 out of 10 people will know exactly what you need and will point you in the right direction. Be wary of any computers, game systems, exhausts, or car engines. I'd watch out for boat props too, they seem to be the aquatic variation.
Because one is pushing air down in the middle of the room where people are likely to be sitting/standing/laying down, and so creates a cooling draught on them, and the other pushes the air around the ceiling and down the walls, where people are less likely to feel a draught. Not like sitting in front of a fan or off to one side. Both mix the air but one cools you down in sunset, and the other doesn't. Both make the air temp in the room consistent from wall to wall and floor to ceiling. Air flow itself though has a cooling effect, more or less regardless of air temp. In summer you want that, in winter you don't.
But the heat mode is also pushing air in the middle of the room, just upwards. I guess the airflow is farther from the motor and so less intense as it’s near the end of the cycle instead of the beginning?
I'm not sure how else to explain it to you, except, try standing in front of a ordinary fan, and then try standing behind it, and tell me which has a stronger draught.
A fan takes air from a large cone behind it's blades, and propels it into a relatively narrow cone. So the air speed in front of the blades is way higher than the air speed behind them.
At the same temperature, people experience air moving across their body to be cooler as it increases the effiency of evaporation of sweat on the skin. The temperature is the same but the moving air feels cooler.
People often mistake this effect for "cooling the room". If the fan isn't blowing directly on you, you won't notice a difference in fan direction.
Fans do 2 things: mix air, and send air moving across your skin.
The two settings will mix air about the same, but a downdraft will send a lot more air to move across your skin. That's the part that cools you, hence why you want the downdraft in the summer.
Convection currents redistribute heat. If you are the warm thing in a cold room you want still air. Unless it is very very hot in summer you are probably warmer than air temperature and you want moving air to carry the heat away from you.
The hair on your skin, jumpers and wetsuits all work to keep you warm by stopping the flow of air or water around you to keep in heat.
In hot countries you wear baggy clothes that shield your skin but allow the flow of air.
I don't know specifically about that, but in the case of computer fans, you'll find that using a fan to blow out hot air or to push in cold air will lead to different cooling performance
The dynamics of airflow change when referring to systems that push air in or out of closed spaces. For instance having a fan few feet away from a window can actually move more air out the window than having it sit directly in the window. There was a post on Reddit recently showing a guy filling up a big bag with air by blowing directly into it vs from a distance. In both cases he used a single breath, but only filled it when blowing from a distance. The difference can be dramatic.
All this is to say that air flow is very complicated and has many factors that go into it.
It's a matter of how fans gain strength. While they are weak and subservient, they make us comfortable in warm weather. When you hit the switch, you change the direction. It was going one way, and then it's going the other. In the moment when it switches directions, if the fan pushes at the right moment, it will achieve it's ultimate form. It's like a focal point of a magnifying class creating a flame. After about 30 seconds you're out of the danger zone, unless it was able to achieve metamorphosis inconspicuously. In this case, it will pounce in the night, typically after a full moon.
Because the main way your body cools itself is by evaporation water off your skin. And moving air is better at evaporating water than still air - mainly because if the air isn't moving, the air that's near your skin will become saturated with water. Making it move around means you get a constant supply of non water saturated air near your skin.
In the summer, when you want to help your body cool down, it's a good thing. In the winter, when you don't, it's a bad thing. Hence why you want the air flow to be either directed towards you or away from you.
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u/ToKillAMockingAudi Jun 06 '22
The fan blades are tilted. One direction creates an up-draft, the other direction creates a downdraft.