Horizontal axis turbine
Similar to a wind turbine. The tidal stream turns rotor blades to generate power
Horizontal axis turbine
Tidal stream
Rotor blades
Vertical axis turbine
Uses a scoop-shaped double rota instead of blades. Water catches in the scoops to drive the turbine
Vertical axis turbine
Tidal stream
Double rotor
Tidal kite
Kite ‘flies’ at speed in the tidal stream forcing water through a turbine fixed under its wing
Tidal kite
Turbine under wing
Figure
of eight
motion
Tidal stream
Tether
Venturi effect device
Concentrates tidal flow through a funnel to drive a turbine and generate power
Water is forced to flow
faster through funnel
Turbine
Tidal stream
Horizontal axis turbine
Vertical axis turbine
Similar to a wind turbine. The tidal stream turns rotor blades to generate power
Uses a scoop-shaped double rota instead of blades. Water catches in the scoops to drive the turbine
Horizontal axis turbine
Vertical axis turbine
Tidal stream
Tidal stream
Double rotor
Rotor blades
Tidal kite
Venturi effect device
Kite ‘flies’ at speed in the tidal stream forcing water through a turbine fixed under its wing
Concentrates tidal flow through a funnel to drive a turbine and generate power
Water is forced to flow
faster through funnel
Tidal kite
Turbine under wing
Turbine
Figure
of eight
motion
Tidal stream
Tidal stream
Tether