Question

If the dB(A) level at an occupied dwelling in Madison County is 50, dictated by a wind energy ordinance, estimate the minimum distance in m (to 1 decimal place) a 2.4 MW wind turbine can be sited to meet this restriction? Assume that the atmospheric absorption coefficient is 0 for this estimate.

Please show work

Answer 1

Given power of turbine, Pw = 2.4 MW = 2.4*10^6 W

sound power level,

Required dB(A), L = 50.

r = required distance from the turbine

As atmospheric absorption coefficient is zero, therefore c = 0

Therefore estimated distance from the turbine is 1549m or about 1.5 km.