Are vertical axis small wind turbines commercially available and usable?
On the website www.allsmallwindturbines.com you can find information about horizontal and vertical wind turbines. Q: How do the power curves from vertical compare with the horizontal ones? On the website www.allsmallwindturbines.com the power curves are given for both types. In general the horizontal ones generate more energy compared to the vertical ones. Q: Are vertical turbines more appropriate for urban settings where there is more turbulence? In general vertical turbines are easier to install in urban areas. In general they are less noisy and less sensitive to turbulent flows compared to the horizontal ones. Q: What is the absolute minimum average yearly wind speed in urban areas to consider a small windmill and what is the best way to measure it? It is not the average wind speed that is important, but the wind distribution. In general the wind speed should be higher then the cut in wind speed of the wind turbine, below this value the wind turbine will not produce any energy at ta
