1 Nov 2004 02:25
Re: Re: permaculture Digest, Vol 21, Issue 37
The windspeed to reach rated power can vary greatly depending upon the design. Engineers I have spoken with have told me that it depends upon the various normal windspeeds for a given location, as well as the size and design of the generator. The large, German one is rated at 5MW <at> 14.5 mph, or so the article I read about it said.Of course, its blades are 126 meters in swept diameter and weigh many tons each, so that may have a part in it as well...plus it is built in a land-based site, so the average windspeed may be a significant factor in its design. As an aside, I lived for some years in Corpus Christi, Texas, on the coast of the Gulf of Mexico. I hope there will be a windfarm developed down there--for Corpus Christi is the city of highest windspeed in the U.S. There, a ten mile per hour breeze is usually unnoticed by the residents because it is so much gentler than the frequently faster-blowing gusts. If I were to find suitable employment down there, I would be shopping for a personal-sized wind turbine very soon thereafter... David On Fri, 29 Oct 2004 22:49:35 -0400 (EDT), dwoodard@... <dwoodard@...> wrote: > Rated power of wind turbines is usually obtained at around 27-35 mph, > depending on the design. The largest turbines are usually intended for > offshore use and the higher windspeeds. > > Power varies as the cube of the windspeed. >(Continue reading)
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