Question

The wind data of a site is listed in the attached file. The data summarizes the wind speeds and their frequencies at the hub height of the turbine described below. Select a generator size that maximizes the annual energy output. Consider generator ratings in increments of 25 kw. Express the final answer in kWh. Parameters Turbine rotor diameter: 70.0 m Overall efficiency: air density low speeds: 33% 1.16 kg/m generator disengaged for the input values below 30% Site Generator cutoff of the rated power High speeds: load dumping up to 3 times the rated power wind energy assignment 3/ wind profile windspeed (m/s) frequency (hr) 1.5 2.5 3.5 4.5 5.5 6.5 70 195 535 670 7.5 630 8.5 9.5 10 10.5 245 190 170 11.5 12 12.5 13 13.5 14 14.5 15 15.5 16 16.5 17 17.5 18 18.5 19 19.5 20 20.5 21 21.5 215 210 195 115 35 14 8760

Answer 1

Windspeedhrs Actual Power Actual Energy (Kwh) 625 2000 5250 12000 24375 43500 75250 107000 133875 160000 184250 196500 204750 204750 195000 172000 136000 110250 90250 85000 105000 118250 120750 117000 50 75 2 9 70 3.5 150 4.5 3 430 535 5.5 250 6.5 7.5 630 325 350 375 520 430 320 245 8.5 2 9.5 10 425 450 500 525 550 575 2

0 9444 3 22117 6 4 3 2 1 2 1 1 1 600 $25 $50 700 750 800 $25 $50扔900 980扔000-250 urs 2570 -999 5 9497543221110 4 3 2 8 与. 1

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