How To Build A Wind Turbine

This ‘How-To’ was  originally published on CleanTechnica There is something remarkable in watching a wind turbine capturing the energy of the wind and converting it into clean electricity. For those unsure of a wind turbines workings, the Department of Energy provides this overview: “Wind turbines operate on a simple principle. The energy in the wind turns two or three propeller-like blades around a rotor. The rotor is connected to the main shaft, which spins a generator to create electricity.”  Windmills…

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New Rooftop Wind Turbine Technology

Wind power is a major source of renewable electric power in many places around the world. We usually associate wind power with tall wind turbines located in remote locations or far out to sea. In July, Denmark produced 140% of its domestic energy from just such turbines, according to The Guardian. Yes, that record was established over a rather windy 24-hour period, but it is remarkable all the same. Until now, small wind turbines that are sized for residential and…

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Eiffel Tower

Eiffel Tower Goes Green

An ambitious remodel project at the Eiffel Tower is making its operations greener.  The first floor of the landmark building was recently refurbished for a better visitor experience and to improve the environmental impact of the historic building. First floor glazing was changed to provide a 25% reduction in solar heat gain during the summer months.  This will significantly reduce the need for air conditioning, saving money and energy.  Almost all of the lighting in the first floor was changed…

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Wind Tree turbine

Wind Tree Provides Silent Wind Power Beautifully

A new French start-up, NewWind, is making wind power beautiful!  Their new Wind Tree offers almost a hundred mini-windmills on an apparatus designed to look like a tree. Due to the light construction of the “leaves,” the Wind Tree generates power at wind speeds as low as 4.4 miles per hour!  This translates into sustained operation times (an average of 320 days a year) that are almost double those of standard windmills that need higher wind speeds in order to…

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Wind Turbine Business Analysis

For those curious about the payback on wind turbines, this press release from AAAS is worth reading. Wind turbine payback US researchers have carried out an environmental lifecycle assessment of 2-megawatt wind turbines mooted for a large wind farm in the US Pacific Northwest. Writing in the International Journal of Sustainable Manufacturing, they conclude that in terms of cumulative energy payback, or the time to produce the amount of energy required of production and installation, a wind turbine with a working…

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Liam F1 Urban Wind Turbine

Urban Wind Turbine Provides Quiet Power

The newly introduced Liam F1 Urban Wind Turbine developed by The Archimedes will allow those in cities to quietly make their own power as easily as their country cousins.  Besides it’s almost silent operation, the windmill boasts 80% efficiency, much higher than the 25-50% of other turbines. The unit is 5 feet wide, so a bit of space is still necessary, but it makes up for that in efficiency.  According to a press release from The Archimedes: “The Liam F1…

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Strength and Design in Concrete Forms

There is something amazingly raw and beautiful in cast concrete forms and buildings. These forms can become any shape imaginable and all that is required is the form to hold the concrete as it dries. Panels of remarkable sizes can be placed on site in construction zones, allowing buildings to rise in record breaking time spans. Concrete’s developments have continued throughout the years with improvements in its strength and constructability techniques. New developments include high-strength concrete that can be reinforced concrete…

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