INTRODUCTION NAME JUSTIFICATION MAIN PARTS PRINCIPLE OF OPERATION BLOCK DIAGRAM WORKING ADVANTAGES  DISADVANTAGES  CONCLUSION An Underwater windmill like a device that extracts power from the tides. Renewable energy technologies are becoming an increasingly favourable alternative to conventional energy sources to assuage fossil fuel related issues. Tidal energy offers a vast and reliable energy source. This technology is similar to wind energy technology, with the rotor blades driven not by wind power but by tidal currents. The gravitational pull of the moon produces a swift tidal current, which spins the long blades of the turbine . Which in turn produces electricity via different parts of underwater windmill

1. UNDERWATER
WINDMILL

3. CONTENT
• INTRODUCTION
• NAME JUSTIFICATION
• MAIN PARTS
• PRINCIPLE OF OPERATION
• BLOCK DIAGRAM
• WORKING
• ADVANTAGES
• DISADVANTAGES
• CONCLUSION

4. INTRODUCTION
• An Underwater windmill like a device that extracts power from the tides. Renewable
energy technologies are becoming an increasingly favourable alternative to
conventional energy sources to assuage fossil fuel related issues. Tidal energy offers a
vast and reliable energy source.
• This technology is similar to wind energy technology, with the rotor blades driven not
by wind power but by tidal currents.
• The gravitational pull of the moon produces a swift tidal current, which spins the long
blades of the turbine . Which in turn produces electricity via different parts of
underwater windmill .

5. NAME JUSTIFICATION
• Why it is called as “underwater windmill”?
• "Basically it's like putting a windmill in the water," -Bjorn Bekken
• Or as it’s looking like a wind mill & are installed on the ocean floor and large river bed,
that means these are under the water.

6. MAIN PARTS
• Turbines
• Gearbox
• Generator
• Cables
• support

7. PRINCIPLE OF OPERATION
• an underwater windmill consists of a rotor, gearbox, and a
generator.
• Water flows => Rotor rotates => turn ON generator.
• The gearbox is used to convert the rotational speed of the rotor
shaft to the desired output speed of the generator shaft.
• The electricity generated is transmitted to land through cables.
• The turbines can convert kinetic hydro energy into power.

9. WORKING
• Under water turbines are a fairly straight forward concept, as far as cutting edge
energy technology goes.
• They are essentially windmills installed onto an ocean floor or river bed.
• The under water current produced by the tides spins blades arranged like an airplane
propeller.
• These turbines are attached to a gear box, which is connected to an electrical
generator.
• This produces the electricity that is carried by cable to shore.

13. ADVANTAGES

14. DISADVANTAGES

15. CONCLUSION

16. THANKYOU
DEPARTMENT OF MECHANICAL ENGINEERING
Eswar Dutt Chennamsetti 18981A0350