Page 5

Features of VAWT 8760

[h/year] S [m/sec] 2

[%probabilty] Power[kW] Weibull 91,23 0

81,34 69,27 56,34 43,77 32,48 23,02 15,58 10,08 6,22 3,67 2,07 1,11 0,57

Energy [kWh]

3 4 5 6 7 8 9 10 11 12 13 14 15

Weibull Energy Time [h] [kWh] 569,6 cut-in

0,03 0,07 0,14 0,24 0,39 0,58 0,82 1,12 1,50 1,94 2,47 3,08 3

866,4 1057,5 1132,3 1101,1 989,1 828,7 651,4 482,5 337,6 223,6 140,4 83,7 47,4

13,1 54,1 120,3 211,0 310,7 398,2 454,4 468,8 442,2 384,4 309,7 232,4 cut-off

Sum

[h/year]

[kWh/year]

7894

3399

According to Weibull distribution of wind probability , the hours of wind are 7894 for year; so the energy produced during the year (3399 kWh) is the sum of the energy produced for each wind speed in the available time;

Weibull

Energy Stored during year

500

13

54

120

211

311

398

454

469

442 384 310

0

232

866

1057

1132

1101

989

829

651

482

Time[h]

338

224

140

84

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EPF VAWT 3kW Main Features  

Brochure of 3kW VAWT prototype developed by EPF company