function of cup anemometer


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Now, he lives in Marietta, Georgia.Aidan Wojtas ; http://www.flickr.com/photos/aidanwojtas/2307169752/ 0000004865 00000 n

It is a common part of most weather stations. Th R e experimental data corresponding to different conical-cups rotors tested on an Ornytion 107A anemometer have been added to …

168 0 obj <>stream Despite technological advances as LIDAR or SODAR [4–7], the cup anemometer, invented in the XIX century for meteorological purposes, remains today the most proper instrument for the mentioned tasks of wind energy forecast on the field and wind turbine control. endstream endobj 154 0 obj <>stream

Anemometer factor, K, of different commercial cup anemometers (big open circles) as a function of the ratio between the cups' radius, Rc, and the cups' center rotation radiusrc,. %PDF-1.4 %���� 0000000816 00000 n 0000004146 00000 n

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0000001912 00000 n 0000014157 00000 n 143 0 obj <> endobj From the point of view of the wind energy industry, the cup anemometer performance is based on the transfer function: where is the wind speed, is the anemometer’s rotation frequency output, and (slope) and (offset) are the calibration coefficients.
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As formulated by Kristensen (1999) the cup anemometer is probably the most common instrument for measuring the wind speed at places weather observations are routinely carried out. endstream endobj 144 0 obj <> endobj 145 0 obj <> endobj 146 0 obj <>/Font<>/ProcSet[/PDF/Text]>> endobj 147 0 obj <> endobj 148 0 obj <> endobj 149 0 obj <> endobj 150 0 obj <> endobj 151 0 obj <> endobj 152 0 obj <> endobj 153 0 obj <>stream %%EOF

0000001792 00000 n Other scientist and climatologists may also use anemometers for a variety of experiments in order to predict future storms or simply to plot a good place for a windmill.Most anemometers are coupled with other weather measuring tools. Other interesting models were developed by Ramachandran [ 4 ] and Kondo et al. !�����BXd_�EP��n-Z��������{�w����~C��~�?�e�9�y�s�3� �7t���ذv˖��fos߶i�z;�Ͼ;��v� b�vΈqF����UT��W��qc�&�F7����'1S?��pɊO6��8����ogP�_hd����i����_d�_dptPDLp`���/�?2&84"��eadP�� ~aa~#���ܣG�Bc�DGJ�EDʣ����g��9y���\4�=������Јh?iDt��uё�߃#�'����1�c��M�G�M��b��-[8wч˗Λ$�F��?_&�������w$"�7��4����q�0>?������&�x�y>o�����}��m�x;x��B�'�?�����<7�X�8��T���x��F�����[�;$ �E x�� �����n�;��!

Wyngaard used a 2-cup model to illustrate the “overspeeding” effect of the anemometer, that is, the cup anemometer responds quicker to wind accelerations than to wind decelerations.

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