2012年3月29日星期四

The Benefits Of Wind Generator

With the rising price of fuel oil, and the rising costs of energy in general, there is increasing demand for home generated power, be it from solar-electric, solar thermal heating, or wind generated power. Of those three options, Wind generator power is by far and away the most mature option, with the best odds for getting a reasonable payback in a typical home owning time frame.With wind power generators, there are two general types to consider: Horizontal blade generators, and vertical wind generators. Horizontal generators are the type most people associate with a windmill or wind generator - they have blades that rotate perpendicular to the ground, with the axis of rotation being horizontal.
They have significant advantages in efficiency, but work best when put on a tower, where they can catch the upper contrail winds, and they're more mechanically complex. On top of this, they're also a hazard to birds, and can be quite noisy.For rural applications, horizontal generators reign supreme. When attached to someone's home for net metered power generation, they run afoul of local zoning ordinances and home owners associations, because, bluntly, there's no real way to make a 35 tall Wind turbine look like it's part of a Victorian deco home plot. Couple this with dead birds, loud noises, and people afraid they'll blow over in a storm, and there's a lot of barriers to installation.
The best choice for a homeowner is a vertical wind generator, which rotates on a vertical axis. There are drawbacks - they're about half as efficient as the more traditional wind turbine, and they may need a small "boost" from an electric motor to get their initial rotation going; their minimum threshold for usable wind is a bit lower.On the other hand, vertical Wind generator have the advantage of being suitable for a ground level installation. They can be put out in the middle of the back yard, or on top of the roof of your garage. They're much quieter in general than horizontal generators, and because they operate at a lower altitude, they're less likely to kill birds. They also don't need a yaw element (the "tail" of a conventional turbine blade) to steer them into the wind direction, as they can generate energy from any wind direction the breeze is blowing in from
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