Solar Sunday is my weekly roundup of renewable energy and energy efficiency news from around the web.
China’s First Zero Emissions Building
Situated in Ningbo, China, the University of Nottingham’s new Centre for Sustainable Energy Technologies (CSET) is a welcome addition to the landscape as well as the air above Zhejiang province. Inspired by Chinese lanterns and traditional wooden screens, Mario Cucinella Architects packed CSET with a variety of sustainable attributes to make it the the first zero-emissions building in China.
Located in a country that relies heavily on coal power to support a population nearing 1.5 billion, CSET’s sustainable attributes are are vigorous as its environmental curriculum. The building is powered by a large array of photovoltaic cells and geothermal energy (which cools and heats the five story floor slabs). Any additional energy collected is stored in batteries that can provide up to two week’s worth of electricity for sunless days.
CSET’s double-glass skin reduces solar radiation, and the large rooftop opening creates natural ventilation while allowing daylight to illuminate the interior spaces. The building also makes extensive use of locally sourced materials in its construction and boasts an onsite rain and gray-water recycling center.
Streetlights go Solar
The latest high power LED street lights from European leader JolietTechnology, coupled with ultra efficient photovoltaic panels offers a new generation of energy efficient, pollution free solar street lighting solutions.
The advantages of cost effective LED lighting for streets, crossings, parking areas, gardens and public areas compared to conventional sodium lamps are undeniable. Adding a photovoltaic power source offers a new dimension.
The new ‘Cleanstreet’ solar LED street light from Joliet Technology is an integrated mast head fitting which employs two 130Wp photovoltaic modules and a electronic controller to charge batteries which operate the 56W LED lamp unit. The advanced system controller offers a night/day sensor for automatic switching.
The Future of Hydrogen is in Corn
The next alternative fuel in a vehicle’s tank might be nothing more than gas with a little help from corn. However, instead of the usual petroleum-based fuel, this gas will be hydrogen, and the corn will be in the form of corncob-charcoaled briquettes. To further develop this alternative fuel concept, researchers at the University of Missouri and Midwest Research Institute (MRI) were recently awarded a three-year, $1.9 million grant from the U.S. Department of Energy (DOE) to continue studying a solution to hydrogen storage in vehicles.
“Developmental hydrogen vehicles exist today but current designs require large, bulky tanks of compressed hydrogen gas to hold the fuel,” said Peter Pfeifer, professor and chair of the Department of Physics in the MU College of Arts and Science. “The tanks also have a relatively small range, only holding enough fuel to travel up to 200 miles. We will be working on reducing the size and weight of the tank and increasing the storage capacity by developing storage materials that hold hydrogen at a much lower pressure than the current high-pressure tanks. The new tanks will store hydrogen on the surface of appropriately engineered carbons.”
The Future is Organic
On a bank of the Mohawk River, a windowless industrial building of corrugated steel hides something that could make floor lamps, bedside lamps, wall sconces and nearly every other household lamp obsolete. It’s a machine that prints lights.
The size of a semitrailer, it coats an 8-inch wide plastic film with chemicals, then seals them with a layer of metal foil. Apply electric current to the resulting sheet, and it lights up with a blue-white glow.
You could tack that sheet to a wall, wrap it around a pillar or even take a translucent version and tape it to your windows. Unlike practically every other source of lighting, you wouldn’t need a lamp or conventional fixture for these sheets, though you would need to plug them into an outlet.
The sheets owe their luminance to compounds known as organic light-emitting diodes, or OLEDs. While there are plenty of problems to be worked out with the technology, it’s not the dream of a wild-eyed startup.
OLEDs are beginning to be used in TVs and cell-phone displays, and big names like Siemens and Philips are throwing their weight behind the technology to make it a lighting source as well. The OLED printer was made by General Electric Co. on its sprawling research campus here in upstate New York. It’s not far from where a GE physicist figured out a practical way to use tungsten metal as the filament in a regular light bulb. That’s still used today, nearly a century later.
The invention of the incandescent bulb created the pattern for home lighting: Our light sources are small and bright. Maybe there are a few in the center of the ceiling, and a few in the corners of the room. Because they’re too bright to look at, they need to be reflected and diffused with lamp shades and frosted glass.
OLEDs could overturn all that, with broad, diffuse light sources bathing rooms in a gentle glow. Photographers go to great lengths to diffuse the illumination they use when shooting portraits, because they know we look our best in soft light.
The big glowing sheets could also make light sources out of everyday things. GE imagines putting OLEDs on the inside of window blinds – pull them down, light them up, and you have light streaming from the window, even at night. You could even make OLED wallpaper, since the material is flexible.
Paris Triangulates Green Architecture
Recently Herzog & de Meuron revealed Le Project Triangle, an incredible structure that will rise 200 meters from the Porte de Versailles in Paris. The stunning skyscraper will feature a profile so slim that it casts virtually no shadow, and its orientation will be optimized to take advantage of both solar and wind power. Paris’ new pyramid will be the first high-rise to be approved for construction is the city’s center since 1977, thanks to the recent lifting of a 31-year-old ban established by the previous Mayor of paris, Jacques Chirac.
The Real Cost of Renewables
As utility costs mount ever higher, Americans now have real options to take home energy matters into their own hands with “green” systems that can pay for themselves in as little as a few years.
Among the choices: wind, solar, geothermal and a “microhydro” option that is potentially cheaper than a year’s tuition at many state colleges.
Choosing the do-it-yourself route can offer the freedom of going partially or totally off the grid. And, if the energy generated exceeds your actual usage, you can even sell the excess juice to your utility company. But none of this is free.
