Tidal stream: horizontal axis device
Similar to a wind turbine. The tidal stream turns rotor blades to generate power
Horizontal axis turbine
Tidal stream
Rotor blades
Tidal stream: vertical axis turbine
Uses two scoop-shaped blades rotating on a vertical axis to harness energy
Vertical axis turbine
Tidal stream
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
Tidal lagoons and barrage turbines
Installed in a sea-wall or tidal barrage, these can be reversible to generate power from incoming and outgoing tides
Walkway
Flow accelerates
through funnel
Lagoon
wall
Lagoon
empties
Turbine
Tidal stream: horizontal axis device
Tidal stream: vertical axis turbine
Similar to a wind turbine. The tidal stream turns rotor blades to generate power
Uses two scoop-shaped blades rotating on a vertical axis to harness energy
Horizontal axis turbine
Vertical axis turbine
Tidal stream
Tidal stream
Rotor blades
Tidal kite
Tidal lagoons and barrage turbines
Kite ‘flies’ at speed in the tidal stream forcing water through a turbine fixed under its wing
Installed in a sea-wall or tidal barrage, these can be reversible to generate power from incoming and outgoing tides
Walkway
Flow accelerates
through funnel
Tidal kite
Turbine under wing
Lagoon
wall
Figure
of eight
motion
Tidal stream
Lagoon
empties
Turbine
Tether