Impacts of exhaust airflow velocity to electrical power generation of small wind energy conversion system (WECS)

Abstract

The purpose of the implementation of this study were: (a) Determine the amount of air flow rate of air flow out of the exhaust pipe, (b) Identify the influence of wind speed in the free air against air flow out from the exhaust pipe, (c) Determine the amount of electrical power and energy potential that can be generated, and (d) Identify the feasibility of the utilization of exhaust airflow for WECS development. This research method begins with the collection of primary data, the direct measurement of natural wind speed and exhaust airflow velocity. Secondary data is mainly drawn from the data specification wind turbine selected unit. Subsequent calculation of the relevant variables, such as: electrical power, electrical energy and power coefficient of the rotor. Analysis and discussion focused on finding interplay between measurable variables. From the research, it can be concluded: (a) Exhaust air flow rate contained in the research area, starting a low of 3.92 m/s which is located at a point 15 meters from the source to a high wind reaches 19, 88 m/s which is at a point 3 feet from wind sources. (b) The amount of exhaust air flow rate has a significant effect on the power and potential of electrical energy that can be generated by a wind turbine mini scale, (c) The most important factors that influence the selection of a wind turbine in WECS is the air flow velocity at the local site and rotor power coefficient of each alternative wind turbine. The higher the coefficient of the rotor of a wind turbine, the higher the efficiency of the wind turbine, and (d) The potential airflow considerable waste has yet to be directly used as WECS, but first must be adjusted for the height of the exhaust pipes to achieve the required height.