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VAWT 3kW Main Features

energy power family www.epf-group.it

January 2010


Summary:  Features of VAWT 3kW  Design Specification  Material Specification

 Aerodinamic Specification  Electronic Components

Energy Power Family S.a.s. All rights reserved. Confidential and proprietary document. This document and all information contained herein is the sole property of Energy Power Family S.a.s.


Features of VAWT cut-off [m/s]

Speed [m/s] 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19

3

Power [W] (experimental) 3500

14

0,00 1,12 8,99 30,35 71,94 140,50 242,79 385,54 575,49 819,40 1124,01 1496,06 1942,29 2469,45 3084,29 3084,29 3084,29 3084,29 3084,29 3084,29

3.084

3000

Power [W]

2500

Power [W]

cut-in [m/s]

2.469

2000

1.942

1500

1.496

1.124

1000 819 575

500

386 72

30

0 3

4

243

141 5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

Wind speed[m/sec]

For every wind speed the wind miller produce a relative power, the peak power of 3 kW is realized by mean a wind of 14 m / sec Energy Power Family S.a.s. All rights reserved. Confidential and proprietary document. This document and all information contained herein is the sole property of Energy Power Family S.a.s.


Features of VAWT average speed [m/sec]

Wind Curves

5,85 120

Experimental Weibull 97 100,0 94 97,7 84 91,2 70 81,3 60 69,3 48 56,3 38 43,8 28 32,5 20 23,0 14 15,6 10 10,1 7 6,2 5 3,7 4 2,1 3 1,1 2 0,6 1 0,3 0 0,1 0 0,1 0 0,0

Weibull

100

% probability wind

S [m/s] 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19

Sperimentale

80

60

40

20

0 0

1

2

3

4

5

6

7

8

9

10

11

12 13 14 15 16 17 18 19

To evaluate the wind distribution of a site, you can use the Weibull distribution of wind probability , which expresses the probability distribution of an experimental curve Energy Power Family S.a.s. All rights reserved. Confidential and proprietary document. This document and all information contained herein is the sole property of Energy Power Family S.a.s.


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

Energy Power Family S.a.s. All rights reserved. Confidential and proprietary document. This document and all information contained herein is the sole property of Energy Power Family S.a.s.


Features of VAWT Energy stored during the year

Weibull

4000

Energy [kWh]

3500 3000 2500 2000 1500 1000 500

0

866 1057 1132

Time [h] 1101

989 829

651

482

338

224

140

84

The energy stored during the year (3399 kWh) is the sum of the energy produced for every wind speed ; Note: 3000 kWh is the energy used by an average household. Energy Power Family S.a.s. All rights reserved. Confidential and proprietary document. This document and all information contained herein is the sole property of Energy Power Family S.a.s.


Design specification Space dimension – Innovative Design The dimensions are 3 meters in height and 1.85 meters of diameter: This size ensures a minimum space for the installation and thanks to the height of the turbine, which allows you to take more wind along the entire length of the blade. The size of the turbine are designed in such a way as to achieve a classic installation with the vertical axis of rotation , or by providing an installation with the horizontal axis of rotation, for particular architectural additions. Compactness The structure is designed to be easily mounted and assembled in a packaging . Energy Power Family S.a.s. All rights reserved. Confidential and proprietary document. This document and all information contained herein is the sole property of Energy Power Family S.a.s.


Design specification The VAWT is realized by mean:

ď ś3 blades with an aerodynamic profiles ď ś3 connecting elements

Energy Power Family S.a.s. All rights reserved. Confidential and proprietary document. This document and all information contained herein is the sole property of Energy Power Family S.a.s.


Material specification

Strength and lightness The entire structure is made for CFRP (carbon fiber reinforced plastic) This ensures to have the highest structural performance, besides allows a minimum weight of the turbine that can be installed on the roof of buildings without problems. Energy Power Family S.a.s. All rights reserved. Confidential and proprietary document. This document and all information contained herein is the sole property of Energy Power Family S.a.s.


Aerodinamic specification

Performance Aerodynamic profiles are designed to ensure high performance in terms of yeld: The blades have an aerodynamic profile capable of ensuring the start-up at low speed (3 m / sec). The connecting elements have an aerodynamic profile capable of ensuring a minimum aerodynamic loss. Energy Power Family S.a.s. All rights reserved. Confidential and proprietary document. This document and all information contained herein is the sole property of Energy Power Family S.a.s.


Electronic components The power generator is a Direct Drive type: With the direct drive technology does not use speed multiplier, in favor of the absence of wear and noise and less maintenance. The inverter and control unit are able to ensure the maximum performance on the output from the generator through a system of tracking the point of maximum power. A monitoring system can be installed for the measurement of the power and energy supplied by the turbine during annually operation.

Energy Power Family S.a.s. All rights reserved. Confidential and proprietary document. This document and all information contained herein is the sole property of Energy Power Family S.a.s.


EPF BIC cittĂ  della Scienza Via Coroglio, 57 80124 Naples - Italy P.IVA 05867181215 mobile: +39329.12.93.829 e-mail: info@epf-group.it website: www.epf-group.it Research & Innovation Manager lng. Armando Carcaterra


EPF VAWT 3kW Main Features