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=== <br>'''Maximum Possible Efficiency'''  ===

=== <br>'''Maximum Possible Efficiency'''  ===
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<br>The [http://en.wikipedia.org/wiki/Betz'_law#Three_independent_discoveries_of_the_turbine_efficiency_limit, Betz limit] was developed by Albert Betz and is intended to represent the maximum possible energy that a device can derive from a stream of fluid at a given speed. In the case of windmill, the maximum theoretical efficiency of a thin rotor can be found based on the following assumptions:
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<br>The [http://en.wikipedia.org/wiki/Betz'_law#Three_independent_discoveries_of_the_turbine_efficiency_limit, Benz limit] was developed by Albert Benz and is intended to represent the maximum possible energy that a device can derive from a stream of fluid at a given speed. In the case of windmill, the maximum theoretical efficiency of a thin rotor can be found based on the following assumptions:

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The Betz limit has&nbsp;predicted the theoretical maximum value for the power coefficient to be 0.593. This means that the theoretical limit of power removed from the fluid is 59.3%. In comparison, commercial wind turbines are currently able to achieve 40 - 50% conversion due to slight inefficiencies related to the blade design and mechanical process.<ref>Gorlov A.M., Silantyev V.M., Limits of the Turbine Efficiency for Free Fluid Flow, Journal of Energy Resources Technology - December 2001 - Volume 123, Issue 4, pp. 311-317.</ref>
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The Benz limit has&nbsp;predicted the theoretical maximum value for the power coefficient to be 0.593. This means that the theoretical limit of power removed from the fluid is 59.3%. In comparison, commercial wind turbines are currently able to achieve 40 - 50% conversion due to slight inefficiencies related to the blade design and mechanical process.<ref>Gorlov A.M., Silantyev V.M., Limits of the Turbine Efficiency for Free Fluid Flow, Journal of Energy Resources Technology - December 2001 - Volume 123, Issue 4, pp. 311-317.</ref>
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=== <br>'''Optimal Angle of blades'''  ===

=== <br>'''Optimal Angle of blades'''  ===
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= References  =

= References  =
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