- General Considerations

             - Specific Considerations

 

 

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Mabie Farm Park - Wind

The wind speed information obtained from the Department of Trade and Industry web page is shown below (http://www.bwea.com/noabl/index.html) :

Table 1. Relation of Wind Speed and Hight

Height (m)

Wind Speed (m/s)

10

4.2

25

5.1

45

5.9


These average values still require on site readings for making the statistical analysis of the Weibull probability distribution theory.

By considering the Energy Saving Trusts recommendations, the turbine should be installed at a distance of 10 times the height of surrounding obstacles, and at a height where the lower limit of the rotor must be above any obstacle.

Considering 10 metres as the height for the two-storey building besides Mabie Farm Park, and 15 metres for the trees of the surrounding Mabie forest, the recommended location of a wind turbine will require a distance of 150 metres from the surrounding forest and 100 metres from the buildings; representing 250 metres of open space. This required area, cannot be found in the selected location.

Although wind may be felt all over the area, the effect of turbulence will reduce the energy yield and, hence, the capacity factor.

Assuming a capacity factor of 15%, the turbines will then require a rated power of 38 kW during the low demand in January and 68 kW during the peak demand in July.

For installing this rated power capacity, the following options may be used:
  • 3 Proven 35 wind turbines (each 27 kW, rotor 75.4 m2, 27 m tower), which will cost £ 1,699.48 per kW.
  • 7 Bergey BWC Excel-S/50 (each 10 kW, 7 m diameter) with 18 metres towers, which will cost $ 3,965 per kW.

In any case, the wind turbine will have to be installed in the middle of the open field; generating an impact on the main activity of the Farm.

 

 

 
  MSc: Renewable Energy Systems and the Environment
© University of Strathclyde 2010