Abstract:
A statistical analysis of Wind characteristics and investigation of feasibility of wind
energy has been conducted. Wind characteristics of coastal regions in Bangladesh have
been analyzed and hence a compatible design of horizontal axis wind turbine applicable
to the pump has been performed.
The available wind data collected by a project work for collecting wind data of the coastal
areas in Bangladesh financed by LGED in year 2003 on some stations at a height 10m have
been converted for the 20m hub-height using power law. From these data hourly average
speed, monthly average speeds have been calculated. It is observed that for few regions
of Bangladesh, there is reasonable wind speed available throughout the year to extract
power. From this data velocity frequency tables are done and histograms have been
plotted for every month for each station and compared with each other. The wind speed
distribution is processed anll fitted to the Weibull function to determine the nature of
wind regime for that site. The shape factor (k) and scale factor (c) of Weibull function
are also determined. Then the Weibull function F(v), Weibull density function f(v) and
velocity distribution function S(v) are plotted from the observed and calculated values
for each month for each regions. The wind energy concentration (Wh/m2
) has also been
calculated.
For a prospective regions of Bangladesh a design of wind turbine for water pumping has
been performed based on . the requirement of water of that region. Th-e design
incorporates the generalized procedure for determination of rotor and pump sizes. Thus
it can be used for any other region as well having the same wind speed range.
To present a generalized design for Bangladesh, an empirical relation has been
developed for the rotor and the pump sizing for a particular region of Bangladesh.
