Low-cost engineering for the benefit of all. This simple appliance works like an air conditioner and can lower the temperature in a room very cheaply.
Faced with the climate crisis and high temperatures, we enter a vicious circle by turning on the air conditioning more ... but we can think of simple, homemade and cheap alternatives, at least to cool a room in the most suffocating hours of the day.
And you may be thinking ... making the ice from the bottles consumes energy, but you already have the refrigerator on, it may even be an efficient one. And the fan or cooler, they work only with 12v. If you can manage it, you can power it with a homemade solar panel.
In addition to the video, we share photos of other similar ingenious ideas.
You can tell your experience or share your design!