Distensible tube wave energy converter
Distribution system for high head hydroelectric machine
Distributor control for hydraulic reversing turbines
Distributor for a reaction water turbine
Distributor for hydraulic reversing turbines
Distributor for turbo hydraulic machines
Double acting pipeless runner blade servo with air bias for...
Double screw seals
Draft tube aeration with check valves
Draft tube aeration with eductor
Draft tube for hydraulic turbines
Draft tube venting arrangement
Drag reducing method and arrangement for hydraulic turbine...
Drag reduction in pumps and turbines
Driving apparatus for a wave power device
Dry band francis turbine
Dry band francis turbine
Dry band francis turbines
Dual hydroturbine unit
Duct-mounted turbine