The Eco Cooler
Zero electricity is needed for this and it uses everyday objects that would otherwise need to be recycled or go to landfill. Brilliant!
Originally shared by Leanne Osborne
Introducing: the Eco-Cooler!
With simply using everyday waste products, cooling one’s home has never been easier! Plus, it doesn’t even use electricity! This could be a great help to lots of third world countries out there. Even if it’s “only five degrees cooler”, it’s still better than having to experience those extra degrees of heat.
I find this hard to believe… well done video, but would like a specialist to weigh in.
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Ashley Wilson the science behind this is true. If you force air through a hole with enough pressure, it becomes compressed. On the other side of the hole the sudden loss of pressure causes it to expand rapidly. This rapid expansion is translated into a loss in temperature. It’s how fridges work and it is why cans of compressed gas get very cold at the aperture where the gas is released. (I don’t know how many times I have gone “Argh!” after using a can of deodorant.)
Now coming back to the video, while they aren’t adding pressure via a compressor or some other apparatus, there will be a natural flow of air coming into the building from outside. This will invariably become compressed by the shape of the bottles and the relatively small necks of the bottles.
Where is the heat flow from and to? When the air compresses on the outside, the air would get hot, and when it gets to the inside, that pressure decreases and heat would get dissipated into the inside (making itself cool), won’t it?
On top of this, he fact that there is no guarantee that the airflow will be from the outside to the inside of the house means that depending on the direction of flow, the change in temperature will get balanced, I think.
Great idea. Insulating the roof would also make the homes cooler. There is a lot of styrofoam waste in the 3rd world. This can be effective insulation.