Underwater windmills
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Underwater windmills, also known as tidal turbines, harness the kinetic energy of underwater currents to generate electricity. They consist of rotors with blades, a gearbox, and generator, with the flowing water causing the rotor to spin and power the generator via the gearbox. While offering benefits like being renewable and producing no emissions, tidal turbines also have high initial costs, are difficult to install, and may damage habitats near the installation site. The document discusses the technology, its implementation in India, advantages, disadvantages, and potential for large-scale renewable energy generation.
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UNDERWATER WINDMILL
Underwater windmills, also known as tidal turbines, extract power from tidal currents and function similar to traditional wind turbines. They consist of blades mounted on a hub that spin a generator via a gearbox to produce electricity. The tidal currents cause the blades to rotate and turn the generator. Underwater windmills offer a renewable source of energy with no emissions, but they have high initial costs and require specialized materials and difficult installation underwater. Overall, tidal power provides a reliable source of clean energy from the predictable tidal patterns.
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Underwater windmills, like offshore wind turbines, extract power from tidal currents using rotor blades turned by the movement of water rather than wind. They consist of turbines, a gearbox, generator, and cables, with the flowing water causing the rotor to spin and the generator to produce electricity via transmission cables. While offering renewable energy with no emissions, underwater windmills have high initial costs and installation challenges, and may impact habitats, with the first commercial tidal farm planned for India's Gulf of Kutch.
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This PPT was made for Seminar course on 25 November, 2021 and is being uploaded on SlideShare at 12:26 AM on 29 November, 2021
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Hydroelectric energy is electricity generated from flowing water, which is influenced by gravity to turn turbines at hydroelectric dams and plants. The largest hydroelectric plant is China's Three Gorges Dam, while the largest in the US is the Grand Coulee Dam in Washington. Hydroelectric power has advantages like longevity and lack of pollution but also disadvantages like high costs, potential for damage if not built correctly, and geological effects of large dams.
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Tidal energy has a relatively high efficiency rate of around 80%, meaning 80% of the kinetic energy from tides can be converted to usable electrical energy. It is an inexhaustible and environmentally-friendly source that can generate energy on a large scale from predictable tides. While the costs of constructing tidal power plants and transmission are high, tidal energy has no fuel costs and power plants have a long lifespan. However, there are few suitable locations and tidal intensity can be unpredictable, potentially impacting aquatic life.
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The document summarizes an underwater windmill seminar presentation. It introduces the technology as extracting power from tides similarly to how wind turbines extract power from wind. It then describes the main parts of an underwater windmill as turbines, a gearbox, generator, cables, and support structure. It explains that tidal currents spin the rotor blades which drive the generator via the gearbox to produce electricity transmitted via cables. The presentation covers advantages like renewable energy generation and disadvantages like high installation costs.
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Underwater windmills, also known as tidal turbines, extract power from tidal currents and function similar to traditional wind turbines. They consist of blades mounted on a hub that spin a generator via a gearbox to produce electricity. The tidal currents cause the blades to rotate and turn the generator. Underwater windmills offer a renewable source of energy with no emissions, but they have high initial costs and require specialized materials and difficult installation underwater. Overall, tidal power provides a reliable source of clean energy from the predictable tidal patterns.
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Underwater windmills, like offshore wind turbines, extract power from tidal currents using rotor blades turned by the movement of water rather than wind. They consist of turbines, a gearbox, generator, and cables, with the flowing water causing the rotor to spin and the generator to produce electricity via transmission cables. While offering renewable energy with no emissions, underwater windmills have high initial costs and installation challenges, and may impact habitats, with the first commercial tidal farm planned for India's Gulf of Kutch.
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Tidal energy has a relatively high efficiency rate of around 80%, meaning 80% of the kinetic energy from tides can be converted to usable electrical energy. It is an inexhaustible and environmentally-friendly source that can generate energy on a large scale from predictable tides. While the costs of constructing tidal power plants and transmission are high, tidal energy has no fuel costs and power plants have a long lifespan. However, there are few suitable locations and tidal intensity can be unpredictable, potentially impacting aquatic life.
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The document summarizes an underwater windmill seminar presentation. It introduces the technology as extracting power from tides similarly to how wind turbines extract power from wind. It then describes the main parts of an underwater windmill as turbines, a gearbox, generator, cables, and support structure. It explains that tidal currents spin the rotor blades which drive the generator via the gearbox to produce electricity transmitted via cables. The presentation covers advantages like renewable energy generation and disadvantages like high installation costs.
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Tidal energy is a clean, renewable source of energy that is widely distributed around the world but not officially recognized or funded. It can be captured efficiently and cost-effectively using helical turbines. Tidal energy has benefits like powering isolated grids, supporting coral reef regrowth, and providing electricity to developing coastal nations at lower costs than other alternatives.
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This presentation generally focuses on the pros and cons of hydroelectric power. The visuals and creativity is really high. Moreover a brief on HEP in Pakistan is also taken into account. Thing is, I've given less detail- for the sake of making it look professional. More examples are given below
So basically creating hydropower plants is pretty fantastic for the country as is lead to employment. Hydropower plants create vacancies for managers, technicians, construction workers, marketers, receptionists and many more.
The U.S. hydropower industry currently employs up to 300,000 workers,
In Pakistan the tarbela dam project created about 2500 different jobs from project development to facilities operations and maintenance. which is pretty amazing considering the unemployment problems in Pakistan.
Another benefit of dams is that they not only produce electricity but also saves and reserves water so that the water is not wasted into oceans and seas. So it is like two advantages in a single packet!
Dams can also be used for other purposes like fishing and sports for example by the creation of recreational parks which would bring in
Tourists!
Mega hydropower plants can invite tourists and other machinery enthusiasts to visit the stations and learn some tit-bits about how they function.
The three gorges the largest hydropower plant in the world bought in a crazy number of over 2 million tourists in 2015 brining in 3.5 billion US dollars.
This money in turn benefits the overall economy and GDP of a country and can really turn things around in a third world country like Pakistan.
Thank you!!!
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Underwater windmills, also known as tidal stream turbines, extract energy from ocean water flows. They consist of turbines mounted on a hub and rotor that turn a generator via a gearbox to produce electricity. When tidal flows pass through the blades, the rotor rotates and turns the generator to produce electricity. Atlantis Resources plans to install a 50MW tidal farm in India with underwater windmills that could eventually produce over 200MW. Underwater windmills provide renewable energy with no emissions, but have high initial costs and installation challenges.
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An underwater windmill, or tidal turbine, is a device that harnesses the kinetic energy of tidal currents to generate electricity. It works similarly to an offshore wind turbine, with rotor blades turned by tidal currents rather than wind. The rotation of the blades drives a generator through a gearbox to produce electricity. Underwater windmills have several advantages as a renewable energy source, such as producing zero emissions and having a long lifetime. However, high initial costs and potential environmental impacts present challenges to their implementation.
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This document is a seminar report on underwater windmills presented by Jadhav Lalit Vilas. It discusses the history and working of underwater windmills, also called tidal stream turbines. These operate similar to regular wind turbines but are placed underwater to harness the kinetic energy of tidal currents. The report outlines the various components, design challenges, power generation potential, research needs, advantages and disadvantages of underwater windmills. It concludes that tidal power is a renewable source that could meet some of the future energy demands if technical and economic issues are addressed.
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This document discusses the advantages and disadvantages of hydropower. Hydropower is generated when water behind a dam passes through turbines, producing electricity. The key advantages are that hydropower produces no pollutants, saves natural resources like coal, and provides a predictable renewable energy source. However, disadvantages include disrupting habitats by flooding areas, requiring high installation costs to build dams and turbines, potentially killing fish, and only being viable in areas with significant rainfall and water reservoirs.
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Hydro energy is produced by releasing water from dams into turbines that convert the kinetic energy of the flowing water into electrical energy. Dams have advantages like being pollution-free and producing steady power once built. However, dams also have disadvantages like taking up significant space, destroying wildlife by flooding land, and being very costly to construct. Nearby examples of hydroelectric dams include the Bighorn Dam and Hoover Dam.
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Hydroelectricity is a renewable form of energy that uses the kinetic energy of moving water to generate electricity through turbines without producing greenhouse gas emissions. It accounts for over 19% of the world's electricity, with large hydroelectric systems like the La Grande Complex in Quebec, Canada being among the largest in the world. Hydroelectric power plants can be designed to utilize either falling water in reservoirs created by dams or the natural flow of rivers.
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This presentation generally focuses on the pros and cons of hydroelectric power. The visuals and creativity is really high. Moreover a brief on HEP in Pakistan is also taken into account. Thing is, I've given less detail- for the sake of making it look professional. More examples are given below
So basically creating hydropower plants is pretty fantastic for the country as is lead to employment. Hydropower plants create vacancies for managers, technicians, construction workers, marketers, receptionists and many more.
The U.S. hydropower industry currently employs up to 300,000 workers,
In Pakistan the tarbela dam project created about 2500 different jobs from project development to facilities operations and maintenance. which is pretty amazing considering the unemployment problems in Pakistan.
Another benefit of dams is that they not only produce electricity but also saves and reserves water so that the water is not wasted into oceans and seas. So it is like two advantages in a single packet!
Dams can also be used for other purposes like fishing and sports for example by the creation of recreational parks which would bring in
Tourists!
Mega hydropower plants can invite tourists and other machinery enthusiasts to visit the stations and learn some tit-bits about how they function.
The three gorges the largest hydropower plant in the world bought in a crazy number of over 2 million tourists in 2015 brining in 3.5 billion US dollars.
This money in turn benefits the overall economy and GDP of a country and can really turn things around in a third world country like Pakistan.
Thank you!!!
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Tidal energy
Tidal power plants erect dams across tidal basins to harness the power of incoming and outgoing tides. As the tide rises, water is held behind the dam until released through turbines to generate electricity. Once built, tidal power stations have fairly low operating costs and can generate power for less than other sources like nuclear or coal. Though salt water causes corrosion, scheduled maintenance allows tidal turbines to function properly for long periods, with stations designed to operate for up to 100 years.
Tidal energy
The document discusses the history and present technology of tidal energy. It describes how early tidal mills used incoming tides to power water wheels and mill grain. Modern technology now uses tidal turbines and barrages to generate electricity from tidal energy. Tidal turbines are similar to wind turbines but operate underwater, while barrages act like dams to trap tidal waters and release them through turbines. Tidal energy has advantages of being renewable and predictable but high initial costs.
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Sustanability
This document provides information about hydropower, including:
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UNDER WATER WINDMILL.pptx
This document presents information on underwater windmills. It discusses the main parts which include turbines, gearboxes, generators, and cables. It explains that turbines convert kinetic hydro energy from tidal currents into electricity via these components. Underwater windmills offer advantages as a renewable energy source with less environmental impact than traditional fossil fuels. However, their initial costs are high and installation is difficult due to working in an underwater environment.
179 e2008h0802
This document proposes developing offshore wind farms in the Persian Gulf, Oman Sea, and Caspian Sea based on an analysis of wind data from locations in those areas. It finds that the Persian Gulf is strongly recommended for offshore wind farms due to minimum wind speed requirements being met. The Oman Sea needs further investigation as wind speeds were slightly above minimum requirements. The Caspian Sea is not recommended due to low wind speeds below minimum requirements and high installation costs. It provides an overview of offshore wind farm components and engineering aspects like tower design and relationship between wind speed and power extraction.
Ocean thermal energy conversion
This document summarizes different types of non-conventional energy resources, including ocean thermal energy conversion (OTEC), ocean wave energy, and tidal power. It describes the open and closed cycles used in OTEC that utilize temperature differences between warm surface water and cold deep water. For wave energy, it discusses how waves form and the oscillating water column technology that uses wave motion to drive turbines. It also notes the challenges in developing these technologies, including high costs. The document provides examples of OTEC and wave energy projects around the world.
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This document discusses different types of tidal power generation including tidal stream systems that use the kinetic energy of moving water to power turbines, and barrage tidal power that uses the potential energy from high and low tides. It also discusses locations suitable for tidal stream systems and provides examples. Economics and environmental impacts of tidal barrage systems are mentioned. The document also briefly discusses wind power, including onshore, offshore, and near shore installations as well as growth trends, scalability, economics, intermittency issues, and grid management challenges.
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This document provides an introduction to electrical power systems in India. It discusses different sources of electrical power generation including conventional sources like thermal, nuclear, gas, and water as well as non-conventional sources like wind and solar. Thermal power from coal makes up the majority of India's installed capacity at 100,000 MW. The document outlines the basic processes of coal-fired thermal power plants and nuclear power plants. It also discusses hydroelectric and wind power generation systems. Key advantages and disadvantages of different power sources are summarized.
pelamis wave energy convertor ppt
Pelamis Wave Power is the world's first commercial-scale machine to generate electricity from offshore wave energy. It consists of cylindrical sections linked by hinged joints that resist waves to pump high pressure oil and drive electrical generators. Each 120m long Pelamis machine is rated to produce 750KW and provides enough power for 500 UK homes annually. While it has advantages of proven technology and low maintenance, concerns include potential disturbance of marine life and high replacement costs if damaged. Overall, wave energy has potential to combat climate change by displacing fossil fuels and protecting the environment for future generations.
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Underwater windmills
- 2. WHAT IS UNDERWATER WINDMILLS ? MAIN PARTS PRINCIPLE OF OPERATION IMPLIMENTATION ADVANTAGES DISADVANTAGES GLOBAL RESOURCES CONCLUSION
- 3. An Underwater windmill like a device that extracts power from the tides. Renewable energy technologies are becoming an increasingly favorable alternative to conventional energy sources to assuage fossil fuel related issues. Tidal energy offers a vast and reliable energy source.
- 6. Turbines Gearbox Generator Cables support
- 7. In simple a underwater windmill consists of a number of blades mounted on a hub (together known as the rotor), a gearbox, and a generator. The hydrodynamic effect of the flowing water past the blades causes the rotor to rotate, thus turning the generator to which the rotor is connected via a gearbox. 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.
- 8. The company Atlantis Resources is to install a 50MW tidal farm in the Gulf of Kutch on India's west coast, with construction starting early in 2012.The facility could be expanded to deliver more than 200MW. Projections indicate that the cost of the initial 50MW farm - to consist of 501MW turbines - will come in at about $150m. The current time scale has the project's final engineering plans completed by the end of the Year 2013.
- 9. 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
- 10. The initial cost is too high Very difficult to install The blade must be coated to avoid corrosion Damages habitat up to 500km away
- 12. 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 renewables, but in the long run we believe we can compete head on with most forms of fossil fuelled power generation at present-day costs.
Editor's Notes
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