4 ms·
That is surprising. They have an inferior efficiency already due to the Betz limit (it is proportional to surface area facing the wind) and will always be about
by SavantIdiot 6y ago
That is surprising. They have an inferior efficiency already due to the Betz limit (it is proportional to surface area facing the wind) and will always be about 60% max for a HAWT and worse for VAWT. However, the dynamics of turbulance have been one of the hardest things to model in large wind farms. The article is a bit light on details, but the last time I went to the Sandia Labs wind turbine conference in Albuquerque, VAWTS were nowhere to be seen (2015) and the biggest modeling challenge was large farm interferrence. Very interesting.
Betz Limit: https://en.wikipedia.org/wiki/Betz%27s_law https://en.wikipedia.org/wiki/Betz%27s_law
- nullifidian 6y agohttps://youtu.be/EM-gCvhQhPU?t=508 https://youtu.be/EM-gCvhQhPU?t=508 This lady says Betz limit doesn't apply to VAWT.
- SavantIdiot 6y agoHuh, did not know. Thanks for the link. Kind of disappointing, I was hoping for an explanation, not a claim.
- palae 6y agoThis paper has some insight: https://iopscience.iop.org/article/10.1088/1742-6596/753/2/022056/pdf https://iopscience.iop.org/article/10.1088/1742-6596/753/2/0...
- SavantIdiot 6y agoI suppose I could have Googled instead of complaining, so thanks for doing the work for me! :) [I like how the first citation is from a 1920's paper (by Betz).]