New rooftop cooling tech beams excess heat into outer space

September 5, 2017 by  
Filed under Green

Comments Off on New rooftop cooling tech beams excess heat into outer space

Heat rises, and, with a little help from scientists, can soar as high as outer space. A team at Stanford University has created a roof-mounted system which cools buildings, without the need for electricity, by incorporating solar panel-like machines that beam heat into the cold expanse of space. This system, known as radiative sky cooling, is seen as an early step to developing a full strength system to cool buildings without the need for an external energy source. This could prove enormously beneficial in dealing with the impacts of climate change (a warmer planet) while reducing its causes (lowering emissions). Shanhui Fan, professor of electrical engineering at Stanford, and his team have been working on radiative sky cooling since 2013. Their recent research has demonstrated that the radiative sky cooling system is capable of lowering the temperature of flowing water to below that of the air around it. While Fan and his team have specifically harnessed radiative sky cooling for air conditioning purposes, this process is something that occurs naturally. “If you have something that is very cold – like space – and you can dissipate heat into it, then you can do cooling without any electricity or work. The heat just flows,” explained Fan. “For this reason, the amount of heat flow off the Earth that goes to the universe is enormous.” Related: Massive new data center to be built in chilly Norway to offset energy use The primary obstacle to achieving a net-temperature decrease through radiative sky cooling is the heat received from the sunlight. To solve this problem, the radiative sky cooling system at Stanford incorporates panels that are coated with a multilayer optical film, which has the ability to reflect up to 97 percent of the incoming sunlight . Using data gathered from small-scale testing, the Stanford team projected that a full-scale radiative sky cooling system would result in an 18 to 50 percent reduction in the amount of energy needed to cool a building. To further develop the concept, the team has started a company called SkyCool Systems and plans to incorporate their system into refrigeration and air conditioning models, with a particular focus on cooling massive data centers . Via New Atlas Images via  Norbert von der Groeben and Aaswath Raman

Go here to read the rest: 
New rooftop cooling tech beams excess heat into outer space

China plans to build nearly 300 new eco-cities

September 5, 2017 by  
Filed under Eco, Green, Recycle

Comments Off on China plans to build nearly 300 new eco-cities

China broke ground on a 40,000-tree-filled Forest City earlier this summer – but apparently one isn’t enough. The country, infamous for their environmental pollution , plans to construct 285 eco-cities , according to Forbes. But what exactly an eco-city constitutes – and the standards to which it will be held – is still in question. Individual buildings can be held up against LEED standards, or even China’s Three Star system. But Forbes pointed out there’s no such criteria for entire cities . The publication quoted Austin Williams, Jiaotong-Liverpool University professor and author of a book on eco-cities, who said, “There is no definition of an eco-city, which makes them incredibly easy to invent.” Related: China plans its first “Forest City” to fight air pollution The country has urbanized more rapidly than any other country in history. In the last 30 years, more people than America’s entire population have moved to urban areas of China. The country has prioritized development over the environment in many cases, with dangerous air quality found in 90 percent of cities. According to Forbes, as the public has become educated about the pollution, environmental conditions in the country could pose the largest destabilizing force to the Communist Party. Will China’s eco-cities recycle , be powered by renewable energy , produce less carbon emissions , and be built with energy-efficient structures – a few hallmarks we might expect in an eco-city? Williams said, “In the West, eco-cities are supposed to save the world; in China they are simply meant to provide a decent quality of urban environment…China’s eco-cities are simply intended to be much-needed urban improvements and infrastructural development with an eco-prefix.” 80 percent of prefectural-level cities are estimated to have at least one eco-city in the works. One estimate suggests in the near future, more than 50 percent of new urban developments in China will be labeled green, smart, low-carbon, or eco. It remains to be seen whether these eco-cities will genuinely benefit China’s environment – and the people who live in them. Via Forbes Images via Stefano Boeri Architetti

Go here to see the original: 
China plans to build nearly 300 new eco-cities

NASA’s new web apps allow Earth-bound explorers to take a trip to Mars

August 10, 2015 by  
Filed under Eco, Green

Comments Off on NASA’s new web apps allow Earth-bound explorers to take a trip to Mars

On the third anniversary of the Mars landing of NASA’s Curiosity rover, NASA has released two new online apps that will allow Earth-bound explorers to take a trip to the mysterious Red Planet. Mars Trek uses real data generated from 50 years of NASA exploration to create detailed visualizations, giving citizen scientists a chance to examine the planet’s surface. Experience Curiosity puts users in the driver’s seat of the one-ton rover as it ranges across a 3D Mars simulation based on actual data gathered from Curiosity and the Mars Reconnaissance Orbiter. Read the rest of NASA’s new web apps allow Earth-bound explorers to take a trip to Mars

Here is the original: 
NASA’s new web apps allow Earth-bound explorers to take a trip to Mars

Bad Behavior has blocked 1144 access attempts in the last 7 days.