UNDERWATER WINDMILLS HARNESSING THE WORLD’S MARINE CURRENT

Tidal Streams – What? Tidal streams Tidal stream turbines The concept Water being moved by tidal force Tidal stream turbines ‘Underwater windmills’ The concept Turbines are driven by kinetic energy of moving water The condition Current speed is more than 1 m/s

Tidal Stream - Where? Map of the area between coasts of Ireland and Scotland: areas marked with magenta (in circles) are the place with strong enough currents

Tidal Stream – Why? Harnessing the marine currents help reduce the world’s dependence upon carbon Tidal flows are predictable; both in terms of timing and in judging the maximum velocity

Design Challenges The challenges to make tidal turbines commercially viable: The need to create an underwater structure with foundations capable of withstanding extremely hostile conditions The need to place the systems in the right location The need to make units efficient and easy to maintain

What’s So Special About SeaGen? The turbine structure acted as its own installation system The design is quite unusual for a ‘windmill’ : two-bladed rotors The pitch can be controlled

Tidal Power Generation

Future Development SeaGen “U”  a possible answer for gaining a more powerful and viable technology in shallower and in deeper water

Environmental Concerns Marine mammals observers monitore seal movements near the turbine SeaGen can be shutted down completely in only FIVE seconds

the ones who want to make this world greener : GROUP V Egi Febriansyah 26020210110043 Aida Astuti Cahyaningwidi Rahayu Sutopo 26020210120044 Arifismail Eko Riyanto 26020210110045 Septi Nur Fajarin 26020210110046 Muhammad Chusnul Marom 26020210120047