The Efficient Wind Turbines Design for Low Wind Speed Air
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UNIVERSITI MALAYSIA SARAWAK
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The fossil fuels produce carbon dioxide and carbon monoxide during the incomplete combustion, which lead to environment pollution. A few types of environmentally friendly wind turbine is proposed for operation under low wind speed. These types of wind turbines are suitable to the wind speed of this country, Malaysia. Numerical simulation is implemented, comparison between conventional and new design model related to flow condition. Prototypes have been manufactured, experimental tested, and compared. The first study of this thesis refers to a novel lantern wind turbine designed and compared to a darrieus vertical-axis wind turbines (VAWTs). Both wind turbines is VAWTs design. The second study refers to waterwheel wind turbine compared to a modern horizontal-axis wind turbine (HAWT), both of the wind turbines is a HAWT designed. The lantern wind turbine has wide range of improvement since it is a new design in development process, the angle of attack of the lantern wind turbine can be increases to provide more pressure difference on the blade and some of the rotor availiable has very high torque, rotor of 1V and 3V should be tested. The results are shown in the form of power coefficient vs tip speed ratio for wind velocities between 3 m/sec to 6 m/sec. The experimental result of the lantern wind turbine shows no rotation when it is compared to Darrieus VAWTs. The modern HAWT model gives the maximum power coefficient of 0.27 at a wind speed of 5 m/s and tip speed ratio of 0.6 which is higher than the waterwheel wind turbine model. The modern HAWT model gives the maximum power coefficient of 0.32 at a wind speed of 3.5 m/s and tip speed ratio of 1.4. The modern HAWT has the optimum torque of 0.01N and 540 RPM. The water waterwheel wind turbine has the optimum torque of 0.01N and 900 RPM. The water wheel wind turbine shows a wide range of improvement at lower speed, which is suitable for rural area in Malaysia.