The wind is faster at higher altitudes and wind power is directly proportional to wind velocity cubed. But mounting a turbine up high makes it more expensive to install and maintain, and requires a stronger tower to support such a top-heavy structure. Engineers at SheerWind have a solution: “scoop” the air from up high and bring it down low to drive a ground-level turbine. Oh, and while they’re at it, how about amplifying the wind speed too? SheerWind coined the term INVELOX - INcreasing the VELOcity of wind - to describe its innovative design. Using a giant omni-directional funnel whose mouths are mounted at the top of a tower, INVELOX brings the wind down to ground level and sends it out through a narrow neck, which increases the wind speed, much like putting your thumb over the end of a garden hose and leaving a tiny opening will increase the water velocity. This makes the turbine smaller, decreasing its cost. And because the turbine is on the ground, routine maintenance doesn’t require climbing a tall tower. Funnel mouths facing all directions eliminates the need for the turbine to rotate towards the wind, resulting in fewer moving parts, less complexity, and increased reliability. Since traditional turbines have relatively high start-up speeds (8 MPH or 3.6 m/s is typical), they can’t generate electricity at lower speeds. Because the INVELOX design increases the speed of the wind before it reaches the turbine, it allows the system to generate power at wind speeds as low as 2 MPH (0.9 m/s).
Each year the MREA Energy Fair transforms rural Central Wisconsin into the global hot spot for renewable energy education. The Energy Fair brings over 20,000 people from nearly every state in the U.S. and several countries around the world.
Rodman & Rodman, P.C., providers of specialized green energy and clean technology accounting and tax services, explain House Bill No. 2915
Commercial production of solar windows, using the patented SolarWindow spray-on solar power coating system, may be just around the corner. A recent announcement from US building integrated photovoltaics (BIPV) developer New Energy Technologies Ltd. (which we’ve been following for years) has us feeling that the time may soon come. As per New Energy Technologies’ recent announcement, the big news is that the fabrication time of the technology has been greatly reduced. The fabrication process, which involves methodically spraying layers of extremely small solar cells onto glass, has been reduced from a couple of days to only a couple of hours. According to the company, the process has been cut to 1/6 of the previous fabrication time. And perhaps as significantly, New Energy has also reported that it has achieved “a two-fold increase in power conversion efficiency” and improved the transparency in the glass.
Students of sustainable design and building to install the Enphase Microinverter System on solar-powered fluxHome
Housed in a plastic rectangular package that is nearly a cube with 6.5 inch sides, Cornell Dubilier's Type 948D DC link capacitors offer up to 20% more capacitance in the same size case with lower ESR and higher ripple current ratings than competitive types.
BYD e6 Taxi fleet and e6 Premier sedan to launch officially in Hongkong
New program helps more Coloradans go solar and save money
In Addition to Utah Solar Panels, Intermountain Wind and Solar Places a Heavy Focus on a New, High Efficiency Emergency Generator
With alternative energy sources becoming more prevalent, IM Wind and Solar is channeling some of their focus into the development of emergency back up power.
City of Columbus' Fleet Maintenance Building home to new 640 KW solar panel system installed with TRA's elevated solar racking hardware
This is already the second wind power order for Siemens from South Africa.
Intersolar India 2013 takes place at the Bombay Exhibition Centre (BEC) in Mumbai from November 12–14.
Solarpraxis' expanded investment workshop series includes PV growth markets of France, Turkey and Latin America; complimentary investment guides will be available
TÜV SÜD will showcase its service portfolio at POWER-GEN Europe, held in Vienna from 4 to 6 June, 2013 (Hall B, Stand B2251).
DWEA has been working with the USDA to reduce paperwork requirements and level the playing field for technology awards.
Records 13666 to 13680 of 26206
Solar & Wind - Featured Product
Solar FlexRack's latest solar tracker technology bundles an advanced tracker design with a full team of seasoned engineering and installation experts at your service. The next-generation solar tracker delivers a package of features that both enable increased energy yields for commercial and utility-scale solar installations, and significantly reduce project risks. That translates to smart installation cost-savings across your project budget.