Converting Hot Air to Cool Air using Zero Electricity

3 comments

Bangladesh has a subtropical monsoon climate. There are three distinct seasons: a hot, humid summer from March to June; a cool, rainy monsoon season from June to October; and a cool, dry winter from October to March. Generally, maximum summer temperatures range between 30°C and 45°C.

Imagine yourself living in Daulatdia, Rajbari in Bangladesh where 28,000 people living in tin huts without electricity. Yes, tin huts. It’s like living in an non-electric oven. Living inside it may be unbearable. Heat-related illness such as heat stroke, heat rash, hear cramps may be a typical scenario.

The brilliant employees of Grameen Intel Social Business and Grey Dhaka went for a volunteer work to address the issue.

IT ALL STARTED WITH A SIMPLE EXPERIMENT

Try blowing your hand using your mouth wide open and feel the air. The air you feel will be warm. Now, try to do the same with your lips pursed. The air will be cooler.

eco cooler(image by Eco-cooler )

ECO-COOLER: THE ZERO ELECTRICITY AIR COOLER

They applied the concept and thus, Eco-cooler was born. Eco-cooler is made up of repurposed plastic bottles and density board / any sturdy board. That’s it! It is made up of recycled materials.

Capture

THE SCIENCE BEHIND IT

HOT AIR(image by Eco-cooler )

The neck of plastic bottles, helps compress the air. As the hot air pushed towards the rim of the bottle, it starts expanding. The rapid expansion of the warm air-cools the air down.

SIMPLE IDEA BEING ADOPTED ACROSS THE COUNTRY

This creative and sustainable idea made the hot, humid temperature to be bearable. It decreased by 5° C. It is now being adopted by the villagers across the country.

TAKE PART

The best thing about this is that Grameen Intel Social Business encourages everyone to adopt this simple solution, share and make their own for the benefit of everyone. They are generous enough to make a how-to-make-guide to be accessible by anyone for there’s no copyright.

INCORPORATING INTO ARCHITECTURAL SOLUTIONS

Eco-cooler is indeed a simple, sustainable and effective solution to address the temperature issues. We could enhance this idea and implement to our design for our structures. A typical horizontal or vertical louvre to protect our fenestrations from harsh sun whilst allowing the wind to pass through may be replaced using this concept.

Lack of resources is not a hindrance for our creative minds. Most of the time we see opportunity where there is a problem that needs to address. Kudos to the employees for making a difference in our world!

Below is the short film about Eco-cooler from YouTube.

What is your creative solution to enhance this concept? Where can we apply this concept?Share us your solutions by commenting below.


Feel free to share this blogpost.  All images and video used are from Eco-cooler  website. This is not a paid advertisement.

3 comments on “Converting Hot Air to Cool Air using Zero Electricity”

  1. “The neck of plastic bottles, helps compress the air. As the hot air pushed towards the rim of the bottle, it starts expanding. The rapid expansion of the warm air-cools the air down.”

    Is this correct? As airflow approaches the rim the available space (defined by the boundary of the plastic bottle) becomes _more_ confined and thus enters a pressure gradient. I suspect that the exiting air is in fact the same temperature as the entering air but has a cooling effect on account of higher-velocity jet movement.

    Like

  2. Well, this is a wonderful idea and can reverse this in winter for hotter air to reduce the cold weather. Moreover whether this can be increasingly used at the ventilators and increasing the window space to install these contraptions and even something more.

    Like

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