A Down-To-Earth Wind Turbine
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).
The 24th Annual Energy Fair June 21-23, 2013 - Custer, WI
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.
Crucial Bill in Massachusetts Would Guarantee Purchase of All SRECs
Rodman & Rodman, P.C., providers of specialized green energy and clean technology accounting and tax services, explain House Bill No. 2915
Solar Power Windows Fast Approaching Commercial Production
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.
Enphase Energy Supports Team USC in 2013 U.S. Department of Energy Solar Decathlon
Students of sustainable design and building to install the Enphase Microinverter System on solar-powered fluxHome
Cornell Dubilier Introduces Type 948D, Capacitors for Large Inverter Systems
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.
Hong Kong's First Pure-Electric Taxis Begin Service, Revolutionizing Public Transport
BYD e6 Taxi fleet and e6 Premier sedan to launch officially in Hongkong
REC Solar Completes Pioneering Colorado Community Solar Project
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.
Columbus Ohio's Fleet Maintenance Building Uses TRA's Solar Racking for 640kw Elevated Solar System
City of Columbus' Fleet Maintenance Building home to new 640 KW solar panel system installed with TRA's elevated solar racking hardware
Siemens wins 100 MW wind power order from South Africa
This is already the second wind power order for Siemens from South Africa.
INTERSOLAR INDIA 2013: THE LATEST TECHNOLOGIES FOR A DYNAMIC MARKET
Intersolar India 2013 takes place at the Bombay Exhibition Centre (BEC) in Mumbai from November 12–14.
Investment guide "Photovoltaics in Chile" published
Solarpraxis' expanded investment workshop series includes PV growth markets of France, Turkey and Latin America; complimentary investment guides will be available
Innovative solutions for power stations
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 Lauds Chairwoman Stabenow for Leadership in Supporting Farmer-owned Small Wind Systems
DWEA has been working with the USDA to reduce paperwork
requirements and level the playing field for technology awards.
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Solar & Wind - Featured Product
POWER MAXâ„¢ Ballasted Roof Mounting System
Preformed Line Products introduces the POWER MAX Ballasted Roof Mounting System. The POWER MAX solar mounting system is engineered to maximize energy output on commercial flat roofs. Developed with the professional installer in mind, this system offers adjustable inter-row spacing in the field of up to 11 inches. It features 50% fewer components and a simplified design resulting in faster assembly rates and labor savings on every project. Available in a flush mount, 5Ëš or 10Ëš tilt or higher density dual tilt design, the POWER MAX base arrives stacked on pallets providing easier transport to the roof. Engineered as a fully ballasted, non-penetrating system, it accepts standard concrete blocks and is qualified by wind tunnel testing.
