19-06-2012, 05:05 PM
DESIGN AND FABRICAITON OF WIND TURBINE FOR ENERGY PRODUCTION
DESIGN AND FABRICAITON OF WIND TURBINE.doc (Size: 924 KB / Downloads: 140)
ABSTRACT
A simple horizontal wind turbine designed and fabricated in Energy and Environment Engineering Department, Quaid-e-Awam University of Engineering, Science and Technology, Nawabshah. The horizontal wind power unit having a generator (120 DC Volt x 1800 rpm), with three blades 1.7ft long, wooden hub (4 inches in dia and ½ inch thick), and PVC pipe (4 inch in dia) to protect generator from weather. The speed of wind recorded by anemometer, the voltage, current and resistance were measured by a multimeter and several other parameters surveyed such as wind speed, output current, voltages of generator and frequency of turbine rotation.
. INTRODUCTION
Wind turbines are the most important source of clean and green energy technologies. The first windmill was introduced around 1888. It was fabricated by Charles Brush of Cleveland, Ohio, America. Further 72 wind turbines were installed in United States in 1930s, with the capacity ranges from 5 kW to 25 kW [1]. Generally, most wind turbines consist of 3 rotor blades. Such number of blades provides the balance of high speed rotation and load balance. Blades are used to lift or capture the wind energy.
. WIND TURBINE TYPES
There are two types of wind turbines namely horizontal and vertical axis. Horizontal axis wind turbines (HAWT) have two or three blades facing to wind. The wind vanes are used in particularly in small HAWT in order to control the rotation of blades, whereas, in large wind turbines a gearbox is employed instead of wind vane. In vertical axis wind turbines (VAWT), the generator and gear box are located near the ground. In VAWT there is no need of wind vane to be pointed into wind direction, because the wind forces can be utilized from any direction [5].
. RESULTS & DISCUSSION
The horizontal axis wind turbine was fabricated in Energy & Environment Engineering Department QUEST, Nawabshah. The data recorded in the month of October atdifferent days about 3-4 hrs/day with an interval of 10 minutes after each experiment. The minimum wind speed was recorded 1.7 m/sec (80 rpm) and maximum was noted 2.7 m/sec (150 rpm), output of generator was 6 DC volts and 11.29 DC volts respectively, given in Table 2.