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Before developers construct a wind farm, they first measure the wind resource on a prospective site by erecting temporary measurement towers.Typically these mount anemometers at a range of heights up to the hub height of the proposed wind turbines, and log the wind speed data at frequent intervals (e.g. every ten minutes) [6] for at least one year and preferably two or more.
Some wind industry associations, such as the Global Wind Energy Council, the World Wind Energy Association, and WindEurope, provide publicly available membership directories on their websites. Other wind industry associations, such as the Canadian Wind Energy Association and the American Wind Energy Association , have membership directories ...
The extreme wind speeds are based on the 3 second average wind speed. Turbulence is measured at 15 m/s wind speed. This is the definition in IEC 61400-1 edition 2.
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An actual model is built to a size suitable for the size of a specific wind tunnel test section, in particular taking care that the frontal blockage of the model (the ratio of the model cross-section area to wind tunnel test section area) is kept well below 1% (except for wall-interference research where the models may be larger).
For wind turbines, the FRT testing is described in the standard IEC 61400-21 (2nd edition August 2008). More detailed testing procedures are stated in the German guideline FGW TR3 (Rev. 22). Testing of devices with less than 16 Amp rated current is described in the EMC standard IEC 61000-4-11 [ 13 ] and for higher current devices in IEC 61000-4-34.
Of course, if you're feeling sick, it’s a good idea to test yourself so you can know the full picture of what you’re dealing with, says Thomas Russo, MD, a professor and chief of infectious ...
The University of Maine (UMaine) Deepwater Offshore Wind Test Site, located nearly 3 miles south west of Monhegan Island, Maine is available for use by commercial and non-commercial entities in partnership with the University of Maine, or the University of Maine itself, to research and develop ocean energy devices, such as floating wind turbines or wave energy converters.