Blandade nyheter 2009-05-27

Blandade nyheter 2009-05-27

Inläggav KennethE 27 maj 2009 11:40

Shape-Shifting Wind Turbine Blades Increase Clean Energy Production
Wind turbines need to be 'tuned' for a certain type of wind, and it is within that sweet spot that they are most efficient. But what happens when wind is blowing faster? Or slower? Sadly, below and above the ideal wind speed, wind turbines are not as effective at extracting clean power from the air. One solution, which is what researchers at Purdue are working on, is to have a turbine with 'smart' blades that can shape-shift depending on wind conditions. Read on for more details....


White Roofs to Sweep the World, Fight Climate Change
It's long been known that white roofs reflect more heat back into space, reducing the amount of electricity used for A/C and thus drastically cutting down on energy consumption. Some estimates say they save billions of dollars annually. And they've just gotten their most public, most official shout out yet--Secretary of Energy

Det borde väl vara självklart att anpassa färgen på taket till klimatet huset står i? Vita tak i varma områden och svarta i kalla.

Aktivhaus Generates More Heat and Power Than It Needs
We love the Passivhaus, or Passive House as it is known in America, where houses are designed to be so well insulated and sited that they need no energy other than passive solar gain to keep warm. But it can be limiting; all the windows face south and they tend to be boxy and small. Architects and builders want to break out of this limitation; we have previously shown the Plusenergihus, a Passivhaus with more windows and a solar powered heating system. Now we learn from Jetson Green about the Aktivhaus, set up to not only h...
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KennethE
 
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Blev medlem: 15 dec 2008 16:15
Ort: Lindome

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