Introducing
Your new presentation assistant.
Refine, enhance, and tailor your content, source relevant images, and edit visuals quicker than ever before.
Trending searches
Underwater Windmill
316
UNDERWATER WINDMILL
Introduction
Introduction
- An Underwater windmill is 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.
Click to edit text
Click to edit text
Why it is called as “underwater windmill” ?
"Basically it's like putting a windmill upside down in the water," -Bjorn Bekken
Or as it’s looking like a wind mill & are installed on the ocean floor and large river bed
Name
Justification
Block Diagram
Block Diagram
Main parts are :
- Turbines
- Gearbox
- Generator
- Cables
- Support
Methodology
Principle Of Operation
Principle
Of
Operation
- Any underwater windmill consists of a number of
blades mounted on a hub (together known as the rotor), a gearbox, and a generator.
- Twin rotor captures infinite kinetic energy of tides.
- It causes the rotor to rotate, thus turning the generator to which the rotor is connected via a gearbox. It has 180 degree pitch control to generate power from flood and ebb tide.
- The gearbox is used to convert the rotational speed of the rotor shaft to the desired output speed of the generator shaft.
- Underwater cables carry the electricity to the shore.
Turbines placed Underwater
Types of Underwater Windmill
Types
Vertical Axis Mill Horizontal Axis Mill
The rotor shaft is The rotor shaft is perpendicular to the horizontal to the
direction of flow of direction of flow of water
water.
Maintenance Of Underwater Windmill
- It can be raised completely above the water surface
- Rotor and drive train (i.e, gearbox and generator) can be raised completely above the surface
Maintenance
Advantages/Disadvantages
Advantages/Disadvantages
- Tidal energy is completely renewable.
- Tidal energy produces no emissions.
- Hidden beneath the water.
- Have lesser impact on the environment
- Low running cost
- Long lifetime with little maintenance
- Reduces the dependence upon fossil fuels
Advantages
Disadvantages
- The initial cost is too high
- Very difficult to install
- The blade must be coated to avoid corrosion
- Damages habitat up to 500m away
- Maintenance is difficult
Conclusion
- Tides and ocean current play is very important role in the formation of global climate as well as eco system for ocean habitats.
- We believe that the intense and predictable marine current resource offers the possibility of clean energy at a cost that will ultimately be competitive not only with the other renewable
- But in the long run we believe we can compete head on with most forms of fossil fueled power generation at present-day costs
References
- http://www.marineturbines.com/
- http://www.renewable-solarenergy.com/tidal-energypower.html
- International Energy Agency, World Energy Outlook 2007.
- Prandle, D., Simple theory for designing tidal power schemes, Advances in Water Resources, 1984.
- Sheth, S. and M. Shahidehpour, Tidal Energy in Electric Power Systems, in Power Engineering Society General Meeting, 2005.
- http://www.tidalenergyltd.com/technology.html
THANK YOU