ANALYSIS ON SUITABILITY OF HORIZONTAL AXIS WIND TURBINE (HAWT) USAGE IN PROSPECT OF DHAKA CITY.

Abstract

As energy consumptions by human societies are increasing rapidly over the years, more energy is needed to fulfill the requirement of daily life usage. On the other hands, sources of energy such as gas & coal are decreasing at high speed. The only alternative available is using renewable energy that can be made from various natural sources like wind, sunlight etc. Among them wind energy can be obtained by using mechanism such as wind turbine. There are generally two different types of wind turbines. One type is built with the aim of generating electricity from wind with high speeds. On the other hand, the other type is built especially for areas with low wind speeds, such as Bangladesh. Wind turbines consist of a set of blades attached to a rotor hub, which together form the rotor; this rotor deflects the airflow, which creates a force on the blades, which in turn produces a torque on the shaft and the rotor rotates around a horizontal axis, which is mainly attached to a gearbox and generator. The generator generates electricity. We have undertaken a project to design a wind turbine and tests its suitability of usage in aspect of Dhaka city. The design process includes the selection of the wind turbine type and the determination of the blade airfoil, pitch angle distribution along the radius, and chord length distribution along the radius. The pitch angle and chord length distributions are optimized based on conservation of angular momentum and theory of aerodynamic forces on an airfoil. The objective it is expected that the present work will provide a good piece of findings with valuable information and results to be used by academicians as well as industrial engineers.