Abstract
The objective of this research is mainly focused on environment-friendly and moderately slow flapping wind turbine which can easily operate in or near urban areas or rooftops owing to scale merit with low-frequency turbine noise, installation cost, avian mortality rate and safety consideration etc. We considered lift and drag based slow flapping type wind turbine to operate in the residential arena. In order to study the flapping wind turbine performance, we collect ten years of wind velocity records from the Bangladesh Meteorological Department for two different stations in Bangladesh. The velocity contours and profiles have been the points of observation to find out the suitable turbine shape having the efficiency to initiate the turbine rotation. We made a simple comparative study of the wind velocities profile obtained from the different stations in Bangladesh. A simple numerical study has been conducted and presented by graphical analysis to inspect the wind flow above the constructed structure. Finally, we analyze the wind velocity for the individual months and determine the turbine performance in terms of torque for the average wind velocities of Dhaka and Cox’s Bazar stations.
Highlights
An increasing public awareness of the rising level of greenhouse gas emissions and the need of tackle fuel security with achieve reductions in emissions has resulted in significant efforts to adopt renewable energy technologies [1]
We focus on the generation of torque by the rooftop wind turbine under variable wind speeds at different locations in Bangladesh
We considered the “Blade element theory”, “Blade element momentum theory”, “Betz limit”, “Bernoulli’s principle”, and other some theories related to the wind turbine to calculate the generated energy by the wind turbine in terms of torque
Summary
An increasing public awareness of the rising level of greenhouse gas emissions and the need of tackle fuel security with achieve reductions in emissions has resulted in significant efforts to adopt renewable energy technologies [1]. In Bangladesh, demand for power is increasing day by day, but the sources of energy are not increasing in satisfactory. Government of Bangladesh is looking for renewable energy sources to meet up the total power demand in this country. Wind energy is fast becoming the most preferable alternative to conventional sources of electric power [7]. The practical use of rooftop wind turbine in the city areas is still in progress. Energy from rooftop wind turbine can be an alternative source of carbon-based fuels [8]. We focus on the generation of torque by the rooftop wind turbine under variable wind speeds at different locations in Bangladesh. If the idea of rooftop wind turbine comes to the light, increasing demand for energy could be solved significantly. We use MATLAB software to analyze the performance of the blade as well as the turbine
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