Calculation of the wind energy resource at a site, Chemistry

The Vermont Wind Assessment Program led by Vermont Tech has measured the wind velocity at 25 locations in the state of Vermont in 2005 and 2006 .

The results are provided in the table below for the site of Shelburne:

1802_Calculation of the wind energy resource at a site.png

The information is provided here in a Weibull's distribution. We will use here for simplicity a Rayleigh's distribution with the same average speed:

a. Justify the choice of the Rayleigh's distribution.

We can compare on the graph below the two distributions for the month of November 2005 which has the Weibull's coefficient the most different from 2:

1206_Calculation of the wind energy resource at a site1.png

b. What is the most frequent wind speed for each month and for the year?

1760_Calculation of the wind energy resource at a site2.png

c. What is the most contributing wind speed for each month and for the year?

2424_Calculation of the wind energy resource at a site3.png

d. What is the available wind power density (W/m2) for each month and for the year?

889_Calculation of the wind energy resource at a site4.png

e. Assuming that the exponent of the shear effect equation is 0.14, extrapolate the values of b, c, and d to a 50m elevation above ground elevation.

1291_Calculation of the wind energy resource at a site5.png

f. What is the class of this site?
The site is Class 1.

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