Best fan placement to move air through the house

Experiments and anemometer measurements to figure out where to best place a fan to optimally air out the house to cool it down at night.

More physics experiments:

[keith]

No joke, this is the old YouTube.

Not over produced stuff, but a normal guy having fun and doing Science

[lumilikha]

"This experiment is done"

You earned a ton of fans with this experiment. Thanks!

[Smagglet]

This guy is out here answering the questions everybody asks, but nobody feels like answering.

[AlTheEngineer]

This is how YouTube used to be.... Useful videos, straight to the point, no sponsors, no ads, no nonsense. Thank you!

[Kuplung]

This is how I like experiments on youtube. No nonsense, no 5 minutes blabla, just the experiment. Love it!

[robertof]

I am an Italian firefighter, this is the same principle we use to evacuate the fumes from the houses during a fire, the "cone" of air must cover most of the window opening

[Abodroc]

This is science guys, this is the enbodiment of curiosity. This is the kind of things and people who got us out of the caves

[thestudentofficial]

This is the Bernoulli effect! Basically, why the windblown section is not a cylindrical column extending from the face of the fan, but rather an expanding cone, is because moving fluids (in this case, air) have lower pressure and thus "pull" nearby fluid particles to move along.

So originally, the windblown section would of course be a cylinder, but at the edge of that cylinder, moving air particles pull along stationary particles, and then the now-moving particles also pull another stationary particle and so on until the kinetic energy dissipates.

This is also why you must stand behind the line at train platforms because the moving surface of the train will "pull" your body into it.

[PastelComGini]

This kind of thing is why YouTube exists.

[Lexpert]

Just discovered your channel and gotta say I'm a fan.

[mompfreed.]

Thats definitely in the category of „thats exactly what I wanted to see and I didn’t know I needed it in the first place“
Thank you Algorithm and thank you Matthias!

[chandlerstewart]

My girlfriend would tease me about starting an 'Airflow' channel, as I nerded out into seeing how long we could go into summer without air con - you did it my brother! I currently use 2 box fans - one pushing in, the other out, right up against the window, BUT I close the window up to the fan so opening is about the size of the box fan. Moves air decently. Ceiling fans on low to evacuate hottest air. I used incense smoke to find window leaks - don't have a meter or graphing capabilities - nicely done!

[j.frankparnell]

I have cooled my entire house in the summer like this for years. Pick a window on the upper floor, or at the farthest point from your bedroom. Open all of the windows in the house. Wait until the temperature outside drops below the interior temperature and then turn on that fan and blow the air out of the house through a single window. This will take in cool air from the outside. Then in the morning as the temperatures rise, close all of the windows again. You will be amazed at how much cooling effect you will have without resorting to air conditioning.

[dommy]

Racheal: "Do we really have to keep this fan in the middle of the room?"

Matthias: "IT'S OPTIMAL! And it's NOT in the middle of the room. It's precisely 52.068cm from the window!"

[fd]

we use the same principle in the fire service. when we use a fan to clear smoke out of a house we point the fan at the front door and make sure the cone of air covers the entire door. we open all the windows and close the doors except for one. when a room is clear we shut the door and open the next room. you can clear out a house in a matter of minutes. 😊

[freemansame]

Humble, fair, polite, honest and I can go on until tomorrow, the world needs more people like that to make it a little more pleasant to live on earth. Thank you !

[crapadopalese]

I love how you have no fluff in the video. Straight to the point. Wish all YouTubers were like you.

[WesBos]

Amazing, thank you for making this. It will solve so many family fights on the best way to cool the house

[lcineo]

This channel is one of the few reasons YouTube is still worth while.

[SodaQuasar]

This is like overclocking home edition