Arcosanti Coordinates: Arcosanti is an experimental town and molten bronze bell casting community that has been developed by the Italian-American architect, Paolo Soleri, who began construction in 1970 in central Arizona, 70 mi (110 km) north of Phoenix, at an elevation of 3,732 feet (1,130 meters). Using a concept he called arcology, he started the town to demonstrate how urban conditions could be improved while minimizing the destructive impact on the earth. He taught and influenced generations of architects and urban designers who studied and worked with him there to build the town. Overview[edit] The goal of Arcosanti is to explore the concept of arcology, which combines architecture and ecology. An Arcosanti apse Construction broke ground at the site in 1970, and has continued at a varying pace through the present. Many features are particular to the design and construction of Arcosanti. Visitors' center and residence The Arcosanti site has a camp area built for the original construction crew.
Vivenergie, chaudières à granulés Okofen, chaudières à plaquettes et à bûches ET DIY Skylights From Used Water Bottles Replace 50-Watt Bulbs Image via YouTube video An ingenious invention by an engineer in Brazil has made an enormous difference in his town. Simply placing a bottle of water in a hole in the ceiling can light up a room with the same brightness as a 50-watt light bulb! Residents have better lighting and are using less electricity. >> WATCH SLIDESHOW: 13 Really Cool Lighting Ideas (Slideshow) I think the part that made it most convincing was the bucket comparison -- when they took the buckets off the bottles to show what a difference they make in lighting the room, my jaw dropped open. While it's obvious that these only work for certain types of structures, and only provide extra light when the sun is out, it shows that you don't have to construct a complex skylight in your roof to get some daylight into your home. And to hear that the bottles are lasting years without needing any maintenance at all is exciting. What a great bottle-reuse-zero-electricity idea! UPDATE: The project is being called Liter of Light.
BioWIN - Chauffages à pellets - Produits - Windhager Zentralheizung Scientists Develop Affordable Solar Panels That Work In The Dark It's about damn time, don't you think? Scientists at Lawrence Berkeley National Laboratory announced Wednesday that they have been able to confirm a new high-efficiency solar cell design that utilizes nearly the entire solar spectrum. Translation: They figured out a way to make solar panels generate electricity in the dark. CleanTechnica says , In earlier trials, the researchers used different alloys that achieved full spectrum responses but involved very high production costs. The Lawrence Berkeley breakthrough represents just one path to increasing the efficiency and lowering the cost of solar cells. In the meantime, you could just turn any metal surface into solar panels with photovoltaic spray paint . [Photo: Norby /Flickr]
DZ France :: Votre fournisseur de poêles à pellet / poêles à granulés et chaudières biomasse - Valenciennes - Lille - Lens La puissance donnée d'un poêle à pellets est sa puissance maximale, comme tout appareil, il est très mauvais qu'il fonctionne continuellement en plein régime. La plupart des poêles à pellets ont un rendement de 90%. Sur sa puissance donnée, il vous faudra retirer 10%. Le poêle à pellets de substitution ou poêle à pellets principal - D'une puissance de 14 à 20 kW (comme une chaudière au gaz), le poêle à pellets de substitution devient le chauffage principal de votre maison et est conçu pour fonctionner 24h/24, 7j/7 et 9 mois de l’année. - Fonctionne comme un chauffage central avec un thermostat sans fil programmable. - Vous programmez les températures désirées en fonction de votre emploi du temps. - S’arrête lorsque la température est atteinte, redémarre automatiquement lorsqu'elle redescend (forte économie d'énergie). DZ veut être un symbole de qualité et de fiabilité dans le domaine du chauffage à pellets et de la chaudière biomasse.
Turn Steel Into Solar Panels With Photovoltaic Spray Paint No, it's not a joke or a crazy awesome futuristic concept . It's real. Tata Steel Europe (formerly Corus) and Swansea University in Wales, UK are collaborating to develop a spray-on technology that would transform steel sheets into solar panels. Earth and Industry says , The technology has significant applications since it is highly efficient even in diffused sunlight. Therefore, countries at higher latitudes or those with limited solar energy resource can generate significant amounts of solar-powered electricity with going for large-scale power plants. If extended, the technology can find its way to the automobile industry where photo-sensitive dyes can be applied to cars to generate electricity to split water into hydrogen and oxygen for fuel cells. Imagine the applications of such a product. The power options could be limitless. And if you think the spray-on solar technology is years away from reality, think again. [Photo: Jaredmoo /Flickr]
Hot solar cells are the cool way to water and power - tech - 14 April 2011 PUMPING water through micro-channels on the surface of a solar panel not only makes it more efficient but can also make seawater drinkable. Concentrated photovoltaic (CPV) cells use lenses to focus large areas of solar energy onto a relatively small section of photovoltaic material, so it is not surprising that they can reach temperatures of 120 °C. These high temperatures make the cells less efficient, reducing the amount of electricity they can produce. That is why keeping them cool is so important, says Bruno Michel, head of advanced thermal packaging at IBM's Zurich Research Laboratory in Switzerland. In arid areas where power generation is difficult this can solve two problems at once, producing electricity and clean water, says Michel. One method of desalination uses hot water to distil seawater, evaporating it to remove the salt. Michel presented the findings at the International Conference on Concentrating Photovoltaic Systems in Las Vegas. More From New Scientist Promoted Stories
One Per Cent: Green Machine: solar street lamp feeds energy to the grid Helen Knight, technology reporter (Image: Adam Mørk/SunMast) The humble street light is joining the ranks of wind turbines and solar power plants in supplying renewable energy to the electricity grid. A street lamp covered in photovoltaic cells, which can generate more energy from sunlight than it consumes to light the street, is being tested in the UK. The SunMast, developed by Scotia, based in Aarhus, Denmark, generates electricity from sunlight during the day, which it supplies to the grid. If the trial in South Mimms in the UK is successful, the lamps could reduce the emissions produced by streetlights by 120 per cent, the company claims. The photovoltaic solar cells, which are designed to generate electricity even on cloudy days, are fitted down the length of the mast, to increase their surface area.
Cheaper, Spray-On Solar Panels Could Appear in Three Years | Business AUSTIN, TX — Researchers at the University of Texas have developed a method to create photovoltaic panels at one-tenth the cost of existing technologies using nanoparticle "inks" to generate electricity from the sun. The group, lead by Brian Korgel in the University's chemical engineering department, predicts that the technology, which would allow solar panels to be painted on rooftops or the sides of buildings, could be market-ready in three to five years. "The sun provides a nearly unlimited energy resource," Korgel said in a statement, "but existing solar energy harvesting technologies are prohibitively expensive and cannot compete with fossil fuels." The technology has been in development for the past two years, with Korgel collaborating with professors Al Bard and Paul Barbara, both of the University of Texas's Department of Chemistry and Biochemistry, and Professor Ananth Dodabalapur of the Electrical and Computer Engineering Department.