Mga basyo ng softdrinks, pwedeng maging aircon.

Over 70% of Bangladesh’s population live in corrugated tin huts across the countryside. During the long summer months, temperatures reach up to 45° Celsius, making these huts unbearable to live in.To address the issue, Grey Dhaka teamed up with volunteers from Grameen Intel Social Business Ltd to create the Eco-Cooler – the world’s first-ever zero electricity air cooler, which uses re-purposed plastic bottles cut in half and put into a grid, in accordance to available window sizes. Based on wind direction and airflow pressure, the Eco-Cooler has succeeded in decreasing the temperature in tin huts by up to 5° Celsius. One of our creative supervisors, Ashis Paul, started thinking about ways to bring relief to these people. He was turning it over in his mind when one day, he overheard his daughter’s physics tutor explaining to her how gas cools when it expands quickly. Ashis has an “inventor” mentality and he’s always been fascinated by science. So, he started experimenting. Ashis Paul designed the Eco-cooler. He told us about his idea of making an air-conditioner out of plastic bottles. The simplicity of the Eco-Cooler is incredible. To make an Eco-Cooler, you cut plastic bottles in half and then mount them on a board. Then, you place the board over a window, with the bottlenecks facing towards the inside of the house. The change in pressure that occurs when air enters the wider part of the bottle and comes out through the bottleneck cools the air. It seems uncanny, but the principle is simple. Blow on your hand with your mouth wide open. The air feels hot, doesn’t it? Now, blow on your hand with your lips pursed. It feels like a cool breeze. The Eco-Cooler doesn’t require any electricity to function!