May 29, 2014

Summer Cooling Experiments

Summer Cooling Experiment #1

Spray bottle + fan 

Water droplets on skin and air will produce cooling effect through evaporation.

Why it fails:
The spray bottle does not create fine water droplets, potentially damaging electronic devices. You also have to continuously pump it if you want to keep cool, as the cooling effect only lasts for 5-15 seconds. I finished one liter of water after 4 hours of frequent spraying.

Effectiveness: 3/5

Summer Cooling Experiment #2

Blow outside air in

 Cool outside air gets blown into the room. A secondary fan blows this cool air directly to the person.

Why it fails:
This assumes that it's colder outside than inside, so this is effective during night but useless during noon. However, mosquitoes can enter from cracks on the window. Putting a screen between the outside fan and inside fan reduces efficiency significantly.

Effectiveness: 4/5

Summer Cooling Experiment #2.5

Blow inside air out

Setup a fan to blow hot air from inside to outside.

Why it fails:
It's stupid. I mean just look at it.

Effectiveness: 2/5

Summer Cooling Experiment #3


Instead of doing stupid gimmicky setups, how about we use an 'air cooler'?

Why it fails:
You won't feel the cool air unless you put your face directly in front of it. Plus if you use it too much, the room will become too humid, creating a sticky and uncomfortable feeling.

Effectiveness: 3/5