- Joined May 4, 2018
One of many types that fall under that type. There are others that are much more efficient.The design of the blades (?), is it yours or comes from where?
Me? I calculate it as the percentage of available wind energy that is converted to electricity. No windmill exceeds 70% (or something like that, I forget the exact value), because they don't completely stop the wind that blows over them. So I could accept calculating efficiency as the realized power compared to the theoretical maximum. This VAWT might exceed 50% if you do that. Maybe.Overall efficiency, how do you calculate it?
If I understand your idea right, wind from a certain direction could be coming parallel to the scoops surface. Otherwise it should have to spin mounted on a pole.IF I was to build one it would be horizontal not vertical. And mounted on the peak of the roof. That way it would get wind from any direction. In this area you have it coming from all directions. And the roof would also catch more wind to make it move. When there is snow I've watched how it seems to increase wind speed when going over the peak.
It would have a bearing at each end, mounted to the roof ridge. When watching how the snow reacts with the wind and the roof, it seems to concentrate and flow over the ridge. This type of flow would be caught in the turbine. And it seems like, again just from the flow of snow, to work even when the wind is coming from a direction parallel to the roof.If I understand your idea right, wind from a certain direction could be coming parallel to the scoops surface. Otherwise it should have to spin mounted on a pole.
It is called a multimeter.Unless anyone has a simple way to test the generator/motor and find out what is coming out of it.
That is only available on small engines with battery start. It is the alternator to charge the battery. A pull start mower(push mower) won't have those coils, just an ignition coil.Or, if you can rescue from junk, a small engine as in a mower, everything is there to transplant
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