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News & Articles on Household-Size (Small) Wind Turbines

November 4, 2003
Paul Gipe

Comparison of Noise from Small Wind Turbines


Comparison of Noise from Small & Selected Medium-Size Wind Turbines
                ECN/Van der Borg   Difference
Turbine Rotor Swept Rated Tip Speed Sound Power   Data Projection @ 8 m/s   from
  Dia. Area Power @ 8 m/s @ 8 m/s @ 10 m/s Source Low High High
  m m2 kW m/s LWA, ref LWA, ref   LWA LWA dBA
Ampair 100 0.91 0.66 0.1         64 71 8
Charging       24 na na
Unloaded         80 86 Gipe
Air 403 1.17 1.07 0.4 80 88 91 Gipe 66 73 14
Whisper H40 2.13 3.58 0.9   85   NREL 72 79 6
BWC 850 2.44 4.67 0.85         74 81
Charging       37 82 87 Gipe     1
Unloaded       51 92 97 Gipe     11
Calorius 5 20 4.6 47 82   Risø 80 87 -5
Gaia 7 38 6.5 47 88   Risø 84 91 -3
Genvind 12.6 125 23.7 37 103   Risø 89 96 7
Kolibri 12.8 129 19.1 40 107   Risø 89 96 11
Furländer 13 133 30 33 93   TÜV 90 97 -4
Gaia 13 133 11.6 39 89   Risø 90 97 -8
Pitchwind 14 154 30   92   Pitchwind 90 97 -5
Enercon E30 30 707 200 25 95 99 Wind-consult 97 104 -9

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