RE: Interesting Wind Power Concept
October 24, 2010 at 3:59 am
(This post was last modified: October 24, 2010 at 4:04 am by Anomalocaris.)
Several things about this idea seems wrong to me:
1. The stalk generators will not be frictionless as the article claims because there will be hysteresis loss in the carbon fiber resin composite tubes with each sway.
2. The stalks can't be packed very close like article suggests because the stalks can hit each other as they sway.
3. It not clear if the much larger numbers of thrashing stalks required to generate the same power as 3 big wind turbine blades would really be safer to birds
4. These stalks can only generate power when the wind speed or velocity is continuously varying. If the wind holds stead, hysteresis loss will quickly damp out the swaying and the stalks will simply stayed bent over, thus stop generating any power. So these stalk generators can not product highly reliable power. Conventional wind turbine can produce highly reliable power if wind holds steady. Highly reliable power is disproportionally valuable from green perspective because they reduce the need to run normal gas fired power plant at highly inefficient regime to provide regulation service to damp out fluncturations in wind power.
5. These stalk generators seems to have no provision to regulate their outputs like conventional wind turbine with variable pitch turbine blades can, so they impose additional polluting regulation service requirement on the power grid.
6. They will not be quite like the article claims. They will produce wind noises as they sway just like wind turbine blades would as rotate.
7. There seems to be no way to keep these stalks swaying excessively in very high wind except by building them excessively strong for normal operation. Normal wind turbine can simply feather their turbine blades to eliminate effects of very high wind. They same problem also arises when there is need to stop the stalks swaying to perform maintenance. Turbine can be stopped by simply feathering the blades. The stalks can't be stopped unless the wind stops.
1. The stalk generators will not be frictionless as the article claims because there will be hysteresis loss in the carbon fiber resin composite tubes with each sway.
2. The stalks can't be packed very close like article suggests because the stalks can hit each other as they sway.
3. It not clear if the much larger numbers of thrashing stalks required to generate the same power as 3 big wind turbine blades would really be safer to birds
4. These stalks can only generate power when the wind speed or velocity is continuously varying. If the wind holds stead, hysteresis loss will quickly damp out the swaying and the stalks will simply stayed bent over, thus stop generating any power. So these stalk generators can not product highly reliable power. Conventional wind turbine can produce highly reliable power if wind holds steady. Highly reliable power is disproportionally valuable from green perspective because they reduce the need to run normal gas fired power plant at highly inefficient regime to provide regulation service to damp out fluncturations in wind power.
5. These stalk generators seems to have no provision to regulate their outputs like conventional wind turbine with variable pitch turbine blades can, so they impose additional polluting regulation service requirement on the power grid.
6. They will not be quite like the article claims. They will produce wind noises as they sway just like wind turbine blades would as rotate.
7. There seems to be no way to keep these stalks swaying excessively in very high wind except by building them excessively strong for normal operation. Normal wind turbine can simply feather their turbine blades to eliminate effects of very high wind. They same problem also arises when there is need to stop the stalks swaying to perform maintenance. Turbine can be stopped by simply feathering the blades. The stalks can't be stopped unless the wind stops.
