Energy from the Wind – Wind Turbines
I am fascinated by those beautiful, effective and environmentally sound modern wind turbines.
This is the Repower MM92, rated power: 2000kW, rotor diameter: 92.5m, hub height: 100m.
See also the record breaking 6MW E-126 from ENERCON
http://www.youtube.com/watch?v=LQxp6QTjgJg
Duration : 0:3:54
There Is No Energy Crisis, There is a Crisis of Ignorance
Visit http://www.geni.org for more information. A sustainable global energy strategy, first proposed by Buckminster Fuller in 1969, to interconnect the abundant renewable energy resources between nations around the world. Benefits include: reducing pollution and climate change, reducing poverty and hunger, and increasing trade, cooperation and peace.
Duration : 0:6:2
Maglev Wind Turbine
http://www.maglevwindturbine.com
Demo CGI for proposed 2GW Magnetic Leviatated wind Turbine.
*Efficient Frictionless Power Generation with less maintenance, compared to HAWT.
No oil change or replacement of the bearings, gears.
Since, MAGLEV does NOT require such.
** Current bearing technology has forced wind turbine designers into horizontal spindle three bladed wind turbines. In this design the huge blades are connected to a spindle in the center. The bearings that support the spindle and control the pitch of the blades (which can be hundreds of feet long) see huge pitch-moment loading, some of which is manifest as torque energy that is focused through the center spindle. The target speed for the spindle is 18 or 20 rpm and the bearings holding the spindle are mounted in a huge casting which also contains a large gearbox stepping the speed up to 1800 to 2000 RPMs which allows for the proper surface speed relationship between the coils and magnets. It is necessary to invert or condition the current, which is expensive. This gearbox is full of many large bearings, gears and castings; for a 2 MW turbine the gearbox can easily weigh 30 tons. This gearbox needs to be mounted on the top of a pole more than 150 feet in the air and be able to support the turbine blades under full-force wind conditions.
***MAGLEV Power Generation, the pitch moment ratio is closer to 1-to-1 then the 100-to-1 as with a horizontal spindle design.
Duration : 0:1:41
Toward a More Efficient Use of Renewable Energy Sources
renewable energy. In one hour we get enough sunlight on the earth to power the planet for a year. The molecular design of new materials for efficient harvesting of photons from the sun is promising. But storing that energy requires the next generation of batteries: sustainable, safe, and high-energy. Alan Heeger, Lon Bell and Jean-Marie Tarason explore new ways to meet our energy needs. Series: Summit on Energy Efficiency [11/2009] [Science] [Show ID: 17378]
Duration : 0:58:10
bio mass fuelsHelix Wind Turbine
Ken Morgan, the founder of Helix Wind introduces the Helix Wind Turbine, a grid tie or off grid power system. For more information please visit the company web site. http://www.helixwind.com
Duration : 0:2:30