Posts Tagged ‘Video’

Opponents to Wind Farms.

July 16, 2010

In preview posts, we described some benefits about the Wind Power. We usually hear wind power is a renewable, clean and a safe energy source. However, this kind of power has got disadvantages as well. Noise, visual impact, weather changes, birds mortality are just examples. This video is the trailer of a documentary film that shows us those problems. Spectacular and painful the image of a vulture bird brought down by a wind turbine blade.

The video is just one piece of the work from associations, organizations and people who think wind farms bring more problems than advantages. Maybe, the most famous organization is Country Guardian created in 1991 in the UK and although they are not opposed to wind energy as such, they condemn the abusive construction of wind farms nearby population centres and natural landscapes. It is not the only, they are more in Europe and America.

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Adopt a Wind Turbine.

July 13, 2010

The EWEA (European Wind Energy Association) started a campaign to promote the wind energy, called Fresh Air. On this website is possible to choose an installed European wind turbine and “adopt” it. It is FREE cost, and the goal is to make people more conscious on Wind Power’s benefits. You can adopt just one wind turbine for each email, so I suggest you to be sure which one you select. Are you interested to adopt a wind turbine? What are you waiting for?

According to this campaign, the video show us interesting facts on Wind Power sector and the potential of wind energy to satisfy the energy market demand without CO2 emissions. Today, Wind Power represents the 4% in the EU electricity, and in 2030 it is expected to increase that proportion to 35%. Strategic investment for a continent as Europe which is so shortfall of conventional energy resources.

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Brake Systems in Wind Turbines

July 12, 2010


According to quality parameters, DS472 (Danish Standard) and GL rules, wind turbines must have two independent braking systems. However, the IEC 61400-1 requirement does not specify what kind of two braking systems must have, but requires the protection system to remain effective even after the failure of any non-safe-life protection system component.

Usually, it makes sense to supply both aerodynamic and mechanical braking. Aerodynamic brake is more benign than mechanical braking, so it is always used in normal shut-downs. On the other side, although a braking system must be used during shut-downs, sometimes technicians allow rotor free turns (idle) within low winds. This strategy reduces the frequency of imposition of braking loads on the gear train.

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What’s inside a wind turbine?

July 7, 2010

This video posted on Youtube.com has sparked my attention. Firstly, because there are not so many videos like this that explains the main parts of a wind turbine, and second because it is worthy and is well-structured. The video is made by UVSAR, a British company which provides technical services for all those involve in work at height.

The video shows us the layout of two typical wind turbine generators, from the transformer at the floor level, ladders (or elevators), to the electrical cables attached to the walls of the tower.

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