Abstract:
Cross flow turbines, which are suitable in upgrading
traditional water mills in to hydro power generating systems in
Ethiopia and in general in developing nations creates high
interest, due to their simplicity for manufacturing in simple local
metal workshops, suitable operating condition for large load
variation conditions, the ease of operation and maintenance by
low skill remote rural farmers in areas which are detached from
the main grid line and apart from most hydraulic turbines their
suitability for low head and flow rate conditions . Therefore, in
this paper the design of highly efficient cross flow turbine runner
for upgrading traditional water mill in to micro hydro power
plant and water mill in Kersa-Minko village is conducted. The
design includes calculations that determine runner diameter,
runner length, runner speed, turbine power, water jet thickness,
blade spacing, number of blades, radius of blade curvature, attack
angle and the blade inlet and exit angles.
