Tuesday, January 09, 2018

Water-Based, Eco-Friendly, and Energy-Saving Air-Conditioner

All-weather friendly cooling technology works without mechanical compressors or chemical refrigerants, and generates drinking water.

NUS Engineering researchers developed a novel air cooling technology that could redefine the future of air-conditioning. (Credit: news.nus.edu.sg) Click to Enlarge.
A team of researchers from the National University of Singapore (NUS) has pioneered a new water-based air-conditioning system that cools air to as low as 18 degrees Celsius (64 degrees F) without the use of energy-intensive compressors and environmentally harmful chemical refrigerants.  This game-changing technology could potentially replace the century-old air-cooling principle that is still being used in our modern-day air-conditioners.  Suitable for both indoor and outdoor use, the novel system is portable and it can also be customized for all types of weather conditions.

Led by Associate Professor Ernest Chua from the Department of Mechanical Engineering at NUS Faculty of Engineering, the team's novel air-conditioning system is cost-effective to produce, and it is also more eco-friendly and sustainable.  The system consumes about 40 per cent less electricity than current compressor-based air-conditioners used in homes and commercial buildings.  This translates into more than 40 per cent reduction in carbon emissions.  In addition, it adopts a water-based cooling technology instead of using chemical refrigerants such as chlorofluorocarbon and hydrochlorofluorocarbon for cooling, thus making it safer and more environmentally-friendly.

To add another feather to its eco-friendliness cap, the novel system generates potable drinking water while it cools ambient air.

Assoc Prof Chua said, "For buildings located in the tropics, more than 40 per cent of the building's energy consumption is attributed to air-conditioning.  We expect this rate to increase dramatically, adding an extra punch to global warming.  First invented by Willis Carrier in 1902, vapor compression air-conditioning is the most widely used air-conditioning technology today.  This approach is very energy-intensive and environmentally harmful.  In contrast, our novel membrane and water-based cooling technology is very eco-friendly -- it can provide cool and dry air without using a compressor and chemical refrigerants.  This is a new starting point for the next generation of air-conditioners, and our technology has immense potential to disrupt how air-conditioning has traditionally been provided.

Read more at Water-Based, Eco-Friendly and Energy-Saving Air-Conditioner

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