the question reads: 2 sites are being considered for wind power generation. site : the wind blows steadily at 7m/s for 3000 hours per year. site 2: wind blows at 10 m/s for 2000 hours per year. assume wind velocity is negligable at other times of the year.
i would like to see the equation and steps to solve it.
thanks
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{ 1 comment… read it below or add one }
Ch2 #16 in Thermodynamics by Cengel?
start with this: Power generation = mechanical energy * mass rate * time
mechanical energy: e=v^2/2 , where v is the velocity of the wind
mass rate = v * A * density , area and density are the same for both sites
time is given
I wont work out all the numbers but I’ll tell you that it will boil down to a function of time and velocity cubed. So if you want to compare the outputs to each other [(v1^3)*t1]/[(v2^3)*t2] = (Power generation at site 1)/(Power generation at site 2)