Engineering, 19.10.2019 05:30 ashleyrichard29
Windmills slow the air and cause it to fill a larger channel as it passes through the blades. consider a circular windmill with a d1 = 8m diameter rotor in a v1 = 12m/s wind. the wind speed after the windmill is measured at 8 m/s. (a) (7 pt) determine the diameter of the wind channel downstream from the rotor (d2). (b) (8 pt) calculate the power produced by this windmill in kw. assume air is incompressible and use air density of 1.2kg/m3 .
Answers: 3
![\dot W = \dot m \frac{ V_1^2 - V_2^2}{2} = 717.3009 [\frac{12^2 - 8^2}{2} \times \frac{1 kJ/kg}{1000 m^2/s^2}]](/tpl/images/0333/6230/4d97c.png)
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Windmills slow the air and cause it to fill a larger channel as it passes through the blades. consid...
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