Tag Archives: environment


Green Tip of the day… Water-Based Air Conditioner

In 1902, Willis Carrier invented the vapor compression air conditioning system, and is still the most commonly used air conditioning technology today. This compressor-based system consumes a lot of energy and uses chemical refrigerants that harm the environment, like chlorofluorocarbon and hydrochlorofluorocarbon. Recently, in the National University of Singapore (NUS), researchers have developed a new eco-friendly, water-based air conditioning system that runs without the need of compressors and chemical refrigerants. This water-based air conditioning system uses membrane technology to remove moisture from the outside air and is cooled by using water instead of chemical refrigerants. It consumes approximately 40% less electricity than compressor-based air conditioners and can cool air to as low as 18 degrees Celsius. In addition, this new system can produce 12 to 15 liters of potable drinking water a day by releasing cool air that is less humid than air in the surrounding environment. GO GREEN… SAVE GREEN!!! KOGwater-based air conditioner