Worm-Shell Struture Francis Type Small Hydro Turbine With Head Of 20m - 200m
Francis turbine is widely used in a hydro power stations with the head of 20-200 metres. It has a worm-shell strueture which can make water in it flow easily and smooothly. Therefore, it is re-garded as a type of turbine with high efficiency. althongh it looks simple, it works well
