Wind turbines Essay Example | Topics and Well Written Essays - 2000 words

Wind turbines - Essay ExampleAccording to studies, wrap contributes only less than 1% of the worlds energy needs (Grose 1). Even if the percentage of function is very low, the use of string turbines as means to generate electricity grow continuously. This is because people nowadays discover the good benefits of using wind turbines in terms of environmental factors.However, some disadvantages still prevent separate people from using wind turbines and few of these reasons are related to high cost of conciliate and noise created by these machines (Mahoney 2). Ongoing improvements on the vanes design and material are continuously done to further develop the machine in terms of its silken properties and performance.A wind turbine is a machine that sens generate electricity through the use of wind power. A wind turbine has large rotating blades that are dependent of capturing wind and creating kinetic energy. This energy is converted to mechanical energy which is used to generate e lectricity for various purposes (Mahoney 1). Shown below are the move of a emblematic wind turbineThe horizontal axis wind turbine (HAWT) is also known as the classical or most commonly used wind turbine in the world. The axis of rotation of these turbines is horizontal to the ground and parallel to the wind stream (Mathew 16). Shown is a diagram showing a sample of a horizontal axis wind turbine.... Shown is a diagram showing a sample of a horizontal axis wind turbine.The advantages of using HAWT are its structural st capacity and changeable blade pitch that allows greater control of the turbine and aids the blades in catching the maximum amount of wind. Versatility is also seen as one of its advantage in terms of its ability to be feathered in case of storms (Mahoney 1). 2.2.2. Vertical Axis Wind TurbineVertical axis wind turbine (VAWT) is different from HAWT because it is vertical to the ground and almost perpendicular to the wind direction. The VAWT can receive wind from any direction and so, complicated devices are avoided. The advantage of using VAWT is that they are not needed to be reinforced very high. Maintenance is also easier since the VAWT is located nearer to the ground. The design is also not complicated and blades can easily be seen by birds (Mathew 19).On the other hand, VAWTs are less efficient than HAWTs since they can only produce energy that is 50% of what HAWTs can produce. Another downfall of VAWTs is that it can only rotate express in higher elevations and with high wind velocity. Lastly, the turbine must be dismantled first in order to change or repair some parts when necessary (Mathew 19). Shown in diagram 2 is a sample of a vertical axis wind turbine. 2.3. Types of Horizontal Axis Wind Turbine BladesWind turbine can be classified as single bladed, double bladed, and three bladed. The cheapest among the four classifications is the single bladed wind turbine since it only consumes small amount of material and labor. On the other h and this design is not ideal since balance is also an important factor in wind turbine construction and single bladed wind