Water-based AC cools the air without using harmful chemicals

January 19, 2018 by  
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Our air conditioners still draw on principles that are around 100-years-old, sucking up power in the process. Researchers from the National University of Singapore (NUS) are working on an alternative: water -based air conditioners. Their system doesn’t need energy -intensive compressors or harmful chemical refrigerants – and can cool air all the way down to 18 degrees Celsius, or 64.4 degrees Fahrenheit. Over 40 percent of the energy consumption of a building in the tropics goes to air conditioning, according to NUS associate professor Ernest Chua . He led a team to develop a new air conditioning system offering several advantages over conventional machines commonly found in buildings today. Related: This amazing Bangladeshi air cooler is made from plastic bottles and uses no electricity Water serves as the coolant in their air conditioner, and an innovative membrane technology sucks moisture out of humid air. The system uses up around 40 percent less electricity than compressor-based air conditioners, which NUS said translates to an over 40 percent reduction in carbon emissions . And the system doesn’t release hot air, instead discharging a less-humid cold air stream. For every liter of water used, as much as 15 liters of drinking water can be harvested, according to NUS – and the water the system harvests from the air is five times purer than Singapore tap water. Chua said in a statement, “Our cooling technology can be easily tailored for all types of weather conditions, from humid climate in the tropics to arid climate in the deserts. While it can be used for indoor living and commercial spaces, it can also be easily scaled up to provide air-conditioning for clusters of buildings in an energy-efficient manner.” NUS said it’s cost-effective to produce the system. Right now the team is further developing the design to boost user-friendliness, and aim to incorporate smart features like real-time tracking of energy efficiency or “pre-programmed thermal settings based on human occupancy.” They’re hoping to collaborate with industry partners on commercialization. Via National University of Singapore and Futurity Images via National University of Singapore and NUSLife on YouTube

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Water-based AC cools the air without using harmful chemicals

How Cool Is Your AC Unit?

September 7, 2015 by  
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As temperatures soar higher, so does your air conditioning bill. Does it have to, though? The founders of Mistbox have developed a revolutionary technology that is cost effective, easy to install, and can make your air conditioning unit up to 40%…

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How Cool Is Your AC Unit?

5 Solutions To Dramatically Reduce Your AC Costs This Summer

July 8, 2015 by  
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A recent publication by the U.S. Energy Information Administration (EIA) noted that in 1993 only 68% of homes had air conditioning.  Today there are 100 million homes with air conditioning systems, which equates to 87% of households in America….

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5 Solutions To Dramatically Reduce Your AC Costs This Summer

Schools Institute ‘Heat Days’ to Protect Kids from Soaring Classroom Temperatures

September 5, 2013 by  
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Image via Shutterstock . Snow days force school closures due to heaps of snow and ice – and now rising temperatures across the country are forcing some schools to institute “heat days.” As the AP reported this week, heat waves in the Midwest prompted Chicago teachers to greet their students with bottles of water, fans, and wet towels. The old brick classrooms where the students learn are generally unequipped with air conditioning , and the district has little money to retrofit the sweltering old buildings. Read the rest of Schools Institute ‘Heat Days’ to Protect Kids from Soaring Classroom Temperatures Permalink | Add to del.icio.us | digg Post tags: air conditioning , associated press , chicago , green design , heat days , heat wave , labor days , long holidays , midwest , Rahm Emanuel , renewable energy , retrofit , school district , snow days , standardized testing , students        

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Schools Institute ‘Heat Days’ to Protect Kids from Soaring Classroom Temperatures

6 Hot Ways to Stay Cool Today

July 20, 2013 by  
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Temperatures are soaring across the northeastern US at present , with several areas experiencing their longest heatwaves in over a decade . If you’re looking to keep cool through this sweltering summer, but you don’t want to blast your air conditioning 24/7, check out our six tips to beat the heat today. From mastering the art of popsicle-making to testing out your swimming skills, there are plenty of ways to stay cool and healthy. READ MORE > Permalink | Add to del.icio.us | digg Post tags: “energy efficiency” , air conditioning , east coast heat , heatwave , high temperatures , picnics , popsicle making , stay cool , staying cool , swimming        

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6 Hot Ways to Stay Cool Today

6 Hot Ways to Stay Cool Today

July 20, 2013 by  
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Temperatures are soaring across the northeastern US at present , with several areas experiencing their longest heatwaves in over a decade . If you’re looking to keep cool through this sweltering summer, but you don’t want to blast your air conditioning 24/7, check out our six tips to beat the heat today. From mastering the art of popsicle-making to testing out your swimming skills, there are plenty of ways to stay cool and healthy. READ MORE > Permalink | Add to del.icio.us | digg Post tags: “energy efficiency” , air conditioning , east coast heat , heatwave , high temperatures , picnics , popsicle making , stay cool , staying cool , swimming        

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6 Hot Ways to Stay Cool Today

More Architectural Tricks To Keep Cool Without Air Conditioning

August 16, 2011 by  
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Cupola House image credit Wikipedia We have covered many of the old ways of keeping cool, but Matt Grocoff points out another at the Old House Web: Cupolas. He writes: Cupolas are as functional as they are decorative… Read the full story on TreeHugger

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More Architectural Tricks To Keep Cool Without Air Conditioning

Scientists contrive heat regulating material to enhance energy efficiency of buildings

August 4, 2011 by  
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DATTATREYA MANDAL: Building Researchers at The University of Nottingham Ningbo China develop heat-regulating building material. With the progression of architecture and constructional processes, we tend to overlook the importance of the primary constituents that drive these expansive fields. Yes, we are talking about building materials, and how their degree of energy efficiency can improve upon the effectiveness of an overall building. Scientists at the University of Nottingham Ningbo China (UNNC), have ingeniously conceived a material somewhere along these lines, which can be best explained as a rudimentary component of air conditioning. Dubbed as the non-deformed energy storage phase change material (PCM), this component can efficaciously regulate heat, by virtue of its large energy storage capacity. For example, if the temperature of a room is set at 26 degrees centigrade, the product can absorb the excess heat produced above this temperature. The initiation of micro-climate response is somewhat analogous to an air conditioning system, albeit without humidity control and air flow. Coming to the form, the material itself is shaped like a large sized coin. This makes the conception highly flexible and cheap, to be used in various types of conditions. Moreover, according to the researchers, the main heat regulating component can be sprayed as an inconspicuous microscopic film on a multitude of surfaces. The conscientious project in itself is in a development stage, with scientists looking forth to commercialize the building material. Preliminary testing already shows that the conception can reduce 35 percent energy requirements of an average building, and also can be utilized in conjunction with LEDs and solar panels to accentuate upon the level of effectiveness. On the ‘greener’ side, many grants (from governmental institutions) have been made available to the scientists. And we expect this to accelerate the novel process of contriving a low cost, sustainable alternative to heat regulation, which has the potentiality to be applicable in tropical and sub-tropical developing countries. Via: ScienceDaily

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Scientists contrive heat regulating material to enhance energy efficiency of buildings

Cree showcases prototype of a highly energy efficient LED bulb

August 4, 2011 by  
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Abdul Vahid V: Energy-efficient lighting Cree LED light bulb The revolutionary LED light source developing firm Cree has showcased a highly energy-efficient LED bulb. Cree has introduced it as the 21st century bulb. The innovative LED bulb consumes less amount of energy to emit better light required for a whole room. However, Cree has no immediate plans to release the bulb as a product into the market. The demonstration model was designed for a display at the L Prize or Bright Tomorrow Lighting Prize, a contest for energy-efficient lambs organized by the U.S. Department of Energy. The LED bulb can be used as spot lights, ornamental lights and for many other applications, Cree said. The marvelous LED light consumes only 8.7 watts. Yet it emits more than 1,300 lumens, i.e., better than a 75-watt bulb offers. This is what makes Cree’s LED bulb a groundbreaking innovation. In a time the world is facing huge energy crisis, bulbs of this type will be a great advantage. Certainly, it provides more light than the traditional incandescent bulbs, but devours less energy. This LED bulb has a color rendering index of more than 90. It is the measure for light quality. For an LED lamb, the rendering index of the Cree LED bulb is much higher. As well, the bulb offers better color temperature that ranges from a cool white light to more conventional yellow. At a whole, performance of the bulb is found great once reviewed under various measures. Cree has been working on similar high energy-efficient LED lamp technologies. Early this year, the company demoed another landmark LED lamp at more than 150 lumens per watt. That means the latest bulb offers higher energy efficiency. The company will be making more research to shape up similar energy efficient bulbs, which the new world is anxiously waiting for. Cree engineers have shaped up the LED bulb in form of cylinder to realize the range of energy efficiency the company was looking for. From the traditional bulbs in rounded shapes, cylinder lamps will hugely help cut consumption of extra energy. Cree’s co-founder Neal Hunter says that if their LED lamps are fully deployed in the country, they could bring a 16.5 percent reduction in energy consumption. Via: CNet

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Cree showcases prototype of a highly energy efficient LED bulb

Design Is The Key To Keeping Cool Without Air Conditioning

July 26, 2011 by  
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image credit Vince Michael Cameron Tonkinwise has noted “The window air conditioner allows architects to be lazy. We don’t have to think about making a building work, because you can just buy a box.” In fact most modern homes are uninhabitable without AC; nobody even bothers to think about cross ventilation and window placement, they just turn down the thermostat. Vince Michael of The School of the Art Institute of Chicago

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Design Is The Key To Keeping Cool Without Air Conditioning

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