A little over a year ago I was unemployed meaning I had a lot of free time. I wanted to do something more meaningful with my time than just watching YouTube so I found a couple of craft project that I could do. One that seemed interesting was making a little stove, or rather a kind of alcohol burner, out of soda cans. To make it a bit more interesting I set myself a challenge. I wanted to see if I could build one of these soda can stoves using nothing but materials from the corner 7-11 and a Swiss Army Knife...continue reading
Back in May I wrote this article about building a passive AC. That time I attached it to the front of our living room fan and I found that while the principle worked the air flow was too low to give effective cooling. I also mentioned that I would like to try to fit one in a window to cool down the incoming air. Now, I’ve finally had a chance to test this concept.
The working principle is the same, as the air passes through the funnel it gets compressed which lowers the temperature. Last time I used standard 500 … Read the rest
A while ago I stumbled upon a video showing some people in Bangladesh who had invented a kind of passive air cooler made from scrap bottles that could help poor people keep cool in the summer, you can read more about it here. I think it’s a neat idea so I figured I would try to build one of my own. The version shown in the video fits in a window but I figured i could fasten it on the front of a fan for increased effect. This post is a build log detailing the process.
As can be … Read the rest