more efficient wind turbine
thought this might be of interest to some people here http://youtu.be/ezxJ0E8tUMY
Forum Discussion
I'm sorry but more than half of that is a total crock. These "new" ideas about small wind generation continually surface.
It has been known for a long time that the amount of power harvested from wind is directly proportional to the swept area of the blades. Yes, funneling the air increases the flow speed but is not significant as reference to the size of the blades.
The part about less harmful to birds and less noise is pure hogwash. I have a 7' propset and you can't hear the blades standing next to the mast. It is all about how the air interacts or spills off the edge of the blade. I have stiff aluminum blades that are formed similar to an aircraft prop but with more fairing to the tip. This allows the air to spill off the edges with less turbulence, hence, less noise than a plastic blade that oscillates or a wood prop that is not faired as well.
The only bird I've killed is the buzzard disguised as a utility company.:B
It has been known for a long time that the amount of power harvested from wind is directly proportional to the swept area of the blades. Yes, funneling the air increases the flow speed but is not significant as reference to the size of the blades.
The part about less harmful to birds and less noise is pure hogwash. I have a 7' propset and you can't hear the blades standing next to the mast. It is all about how the air interacts or spills off the edge of the blade. I have stiff aluminum blades that are formed similar to an aircraft prop but with more fairing to the tip. This allows the air to spill off the edges with less turbulence, hence, less noise than a plastic blade that oscillates or a wood prop that is not faired as well.
The only bird I've killed is the buzzard disguised as a utility company.:B
