Acoustic Tests of Small Wind Turbines [electronic resource] : Preprint
- Published
- Washington, D.C. : United States. Dept. of Energy, 2003.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy. - Physical Description
- 17 pages : digital, PDF file
- Additional Creators
- United States. Department of Energy and United States. Department of Energy. Office of Scientific and Technical Information
Access Online
- Restrictions on Access
- Free-to-read Unrestricted online access
- Summary
- Eight small wind turbines ranging from 400 watts to 100 kW in rated power were tested for acoustic emissions at the U.S. Department of Energy's National Renewable Energy Laboratory. Rigorous test procedures based on international standards were followed for measurements and data analyses. Results are presented in the form of sound pressure level versus wind speed, where the sound was recorded downwind of the turbine at a distance equal to the hub height plus half the rotor diameter. When there was sufficient separation between wind turbine noise and background noise, the apparent sound power level was calculated. In several cases, this was not possible. The implications of this problem are discussed briefly. Some of the configurations tested were specifically developed to reduce the noise level of their predecessors. Test data for these machines demonstrate marked progress toward quieter turbines.
- Report Numbers
- E 1.99:nrel/cp-500-34662
nrel/cp-500-34662 - Subject(s)
- Other Subject(s)
- Note
- Published through SciTech Connect.
10/01/2003.
"nrel/cp-500-34662"
Prepared for the 2004 Wind Energy Symposium, Reno, NV (US), 01/05/2004--01/08/2004.
van Dam, J.; Migliore, P.; Huskey, A.
National Renewable Energy Lab., Golden, CO. (US) - Funding Information
- AC36-99-GO10337
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