Ingenious DIY Air Conditioner Made Out Of Plastic Bottles Requires No Electricity… – Eco Snippets

Ingenious DIY Air Conditioner Made Out Of Plastic Bottles Requires No Electricity…

Ingenious DIY Air Conditioner Made Out Of Plastic Bottles Requires No Electricity...

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Out in the sticks of Bangladesh, the threat of flooding means that 70 percent of the population live in corrugated tin huts, most of which aren’t hooked up to an electricity supply. In the heat of the summer, this can practically turn these houses into ovens.

However, a project called Eco-Cooler is spreading knowledge of a cheap and electricity-free method to cool down houses throughout Bangladesh. The beauty of the project is it needs little more than a few plastic bottles and a board. It was started through a collaboration between advertising agency Grey Dhaka and Grameen Intel Social Business Ltd.

Here’s how it works: Plastic bottles are cut in half and then mounted into a grid through bottleneck-sized holes. This grid can then be placed over a window, with the narrower top end of the bottle facing inwards to the house. As wind blows through the bottles, cool air is funneled into the hut. Eco-Cooler say it is possible for this technique to decrease the temperature in the house by up to 5°C – although this figure varies widely based on outdoor conditions…

Ingenious DIY Air Conditioner Made Out Of Plastic Bottles Requires No Electricity...

Not only does it not require any electricity, it also makes good use of disposed plastic bottles. The project has been put online for free, in hopes it can reach as many people as possible. Their initiative has already taken root throughout nearly 25,000 households in villages across Nilphamari, Daulatdia, Paturia, Modonhati, and Khaleya…

Ingenious DIY Air Conditioner Made Out Of Plastic Bottles Requires No Electricity...

“After initial tests, blueprints of the Eco-Cooler were put up online for everyone to download for free,” Syed Gousul Alam Shaon, chief creative officer at Grey Dhaka, said in a statement. “Raw materials are easily available, therefore, making Eco-Coolers a cost-effective and environmentally-friendly solution.” (Via IFLScience)

Check out the video below to see it in action…

If you like this idea, be sure to share it with your friends and inspire someone you know. Anything becomes possible with just a little inspiration…

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(26) comments

Pamela Allen Schultz Grantham

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us bottles that have a more narrower neck so that the air flows inward smoother with less turbulence and make sure that the whole board is used more efficiently by connecting all of the bottles together and leaving no spaces !

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Lee Tyner, for the Patch. Watch the video. The air that’s gone through the bottles is about 9F cooler than the outside air because it’s been compressed.

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    That is way cool.

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    KJ Tullis: As a gas and compression expert, I’m curious if you have any comments.

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    Since there is a relationship between temperature, pressure, and volume of a gas, I presume that the principle is that the air expands and drops in pressure as it leaves the neck of the bottle, causing a temperature drop. In essence it becomes an expansion orifice. The air in the large part of the bottle is slightly compressed by the wind. This would cause a pressure increase and a corresponding temperature rise in that area, but I would imagine the large surface area of the main body of the bottles acts as a pretty good heat exchanger. Therefore some of the heat generated by the increased pressure is dissipated. I might say that the video is slightly incorrect when it says that the compression cools the air. Compression of air will increase temperature but release of the air to a lower pressure area will cause the temperature to drop. You might think that the net effect would be nil, but if the heat of compression is dissipated before the air goes through the bottleneck, then the net temperature downstream of the neck will be lower than ambient air. This is the basic principle of an air conditioner. The refrigerant is compressed, which raises its temperature and pressure. This hot gas goes through a heat exchanger coil to remove some of the heat (condenser, the unit on the outside of your house), at which point a major part of it goes back to liquid phase. This liquid is flashed through an orifice into another coil (the evaporator, the part in you furnace closet), causing a major temperature drop. I would think this bottle air conditioner could be made more efficient by shading the portion of the bottles outside from the sun. Anything to induce more rapid heat transfer from the large part of the bottle to the surrounding outside air.

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    That’s an interesting (and well written) reply. I have another question or two, but it can wait for pizza.

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    Well I’m impressed at KJ’s response! Whodda thunk? And, Lee, remember how I told you I was convinced the air from my bed fan felt cooler than the room temp air, but I knew it couldn’t be possible. Well, I guess I was wrong and my first thought that the air was actually cooler was indeed correct! BINGO!

    Reply

    At some point giving your wife a way to instantaneously cool herself at night may be the difference between life (and your) death. Bed Fan with Wireless Remote https://www.amazon.com/dp/B00L3EY29C/ref=cm_sw_r_sms_api_i1aAxb2HCANVV

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Fantastic! Thank you Physics ????

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It would make it very dark inside – maybe clear perspex would be better as a backing, especially since they don’t have electricity for lighting.

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    I was just going to say they would need to cut a new window or use a clear material

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Very clever!!

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How does this let more air in than just opening the window?

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Does it not work by crude use of the venturi or indeed chimney effect to suck the warm air out if the building?

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Nicola Purdom you think we can Phil on board? ?

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What about solar power?

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Good…yet 5 degrees below 45 still makes 40…still unbearable inside a tin shed…how about this plus insulation using….? Very good to find affordable solutions that dont cost the earth

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Honestly, try out such contraption before you promote it. As a high school project it may be good as a concept. Beyond that…

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Tim, Here you go. Problem solved.

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Interesting idea. Too bad the video explaining it is not accessible. Says video is no longer available. ??

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The video isn’t available

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Umm, sorry if this is a dumb question, but how does that cool the house? I can’t see how funnelling the air through plastic cools more than just having a window open? Neither the link nor the video are connecting

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