---Tubuler
turbine with s- shaped draft tube is suitable for
small hydro power station with low head and large
discharge.
Compared
with the traditional axial flow turbine, tubular turbine
possesses simple construction, best hydraulic characteristics,
easy erection and maintenance, and simple civil works
as well.
Compared
with th e traditional axial flow turbine, because
of the large diacharge, the diameter of tubular turbine
can be reduced by 10----15% under the same hydraulic
parameters.
The
civil works can be reduced by 20% if tubular turbine
is employed.
