Calibration of pump efficiency meters
Ceiling fan with variable blade pitch and variable speed...
Centrifugal fluid seal for hydraulic machines
Centrifugal liquid seal for hydraulic machines
Centrifugal pump
Centripetal vortex type hydraulic turbine, and axial nozzle...
Chedrod plan for pumped storage hydroelectric plant
Circular stay ring for rotary fluid machine
Clean and renewable energy of the future
Closing device of wicket gates in e.g. hydraulic-turbines
Complex ocean power system combining sluice power and ocean...
Composite spiral casing
Conduit
Configurations and methods for wave energy extraction
Construction of an in-pipe turbine
Control apparatus for variable-speed hydraulic power...
Control for turbine gate actuator
Control installation for a hydro-electric power station
Control jet for hydraulic turbine
Control system for extracting power from water flow