A new vertical axis wind rotor using convergent nozzles

Although vertical axis wind turbines have been neglected till now; they can prove to be very promising as in the case of the new rotor designed. During the past two decades, research attention has been focused on improving the performance of vertical-axis wind turbines. The paper introduces a new vertical axis wind rotor for low wind speed areas, which uses a convergent nozzle for the amplification of wind speed. Instead of using large central station power plants, these new rotors can be most conveniently built in smaller units appropriate for individual load requirements. The importance of the work is high especially due to the current trend towards distributed or dispersed generation. Another effort has been made to analyse the optimum nozzle dimensions for a better performance of the system.