1introduction to tidal energy
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This document discusses tidal energy and the different technologies used to harness it. There are two main types - tidal range technologies which use barriers like dams to capture the difference between high and low tides, and tidal stream technologies which function more like underwater wind turbines in tidal currents. The largest tidal barrage currently is the Sihwa Dam in South Korea. Tidal energy has advantages of being predictable, renewable and having a long lifespan, though construction costs are high and locations are limited. The conclusion is that tidal energy has great potential as a renewable resource.
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Tidal Energy
Tidal power, also called tidal energy, is a form of hydro power that converts the energy of tides into useful forms of power, mainly electricity.
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Hydroelectric power plants generate electricity using the kinetic energy of flowing water. Water is channeled through turbines that spin generators to produce electricity. Key components include a dam/reservoir, intake, penstocks, turbines, generator, and tailrace. Hydro is a renewable source of energy but development can impact the environment and local populations. It has low operating costs but high initial infrastructure costs. Output depends on water flow/head which can vary seasonally.
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Tidal energy
Tidal energy harnesses the kinetic energy of tidal currents and potential energy of high and low tides to generate electricity. There are two main types of tidal power facilities - tidal barrages and tidal current turbines. Tidal barrages utilize potential energy differences by building dams across tidal estuaries, while tidal current turbines capture kinetic energy directly from tidal stream flows using underwater rotors similar to wind turbines. Tidal energy has advantages of being predictable and free once infrastructure is built, but development has been limited by high construction costs and environmental impacts of large-scale barrages.
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Tidal power, also called tidal energy, is a form of hydro power that converts the energy of tides into useful forms of power, mainly electricity.
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This document provides information on hydropower, including how it works, its renewable nature, types of hydropower plants, plant components, and turbines. Hydropower harnesses the kinetic energy of falling or flowing water to generate electricity. Dams impound water to form reservoirs that provide potential energy, then water flows through turbines connected to generators to produce emissions-free renewable electricity. Hydropower plant components include reservoirs, dams, inlet waterways, penstocks or tunnels, powerhouses containing turbines and generators, and spillways. Common turbine types are impulse (Pelton) for high head applications and reaction (Francis and Kaplan) for lower head situations.
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This document discusses tidal power and tidal energy generation. It begins with an introduction to tidal power and the causes of tides. It then describes the different types of tides and tidal barrages used in tidal power plants. The main parts of a tidal power plant including the barrage, sluice gates, and turbine generators are explained. Advantages like being renewable and efficient and disadvantages like high costs and environmental impacts are highlighted. Major tidal power plants currently operating in the world are briefly mentioned. The future potential of tidal energy is discussed in the conclusion.
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The document provides an overview of various types of ocean energy resources including wave, tidal, ocean thermal, and salinity gradient energy. It notes that the theoretical global resource for wave energy is 8,000-80,000 TWh/yr, 800 TWh/yr for tidal current energy, and up to 10,000 TWh/yr for ocean thermal energy. This is a significant amount of energy that could meet or exceed current global electricity consumption of 17,000 TWh/yr. The document also describes some of the technologies used to capture these resources such as oscillating water columns for wave energy and tidal barrages for tidal energy.
Tidal Energy
This ppt explained the basic concept of Tidal energy , Components of Tidal barrage powerplant, Modes of generation of Tidal power, Tidal stream generator, single and double bassin arrangement, Horizontal & vertical axis Tidal turbine Helical Turbine, Dynamic Tidal powerplant, Environmental impacts and Site selection for tidal powerplant. Also describes the advantages and disadvantages of Tidal powerplant.
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This document discusses tidal energy and tidal power plants. It defines tidal energy as a form of hydropower that converts the energy of tides into electricity. Tides are caused by the gravitational pull of the moon and sun, causing the periodic rise and fall of ocean water levels twice per lunar day. Tidal power plants consist of a tidal barrage to hold back water, sluice gates to control water flow, and turbines that generate electricity as water flows in and out with the tides. The document outlines advantages such as being a renewable source and having predictable tides, and disadvantages including high construction costs and potential environmental impacts. Major existing tidal power plants worldwide are also briefly mentioned.
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The document discusses hydroelectric power plants in Sikkim and Delhi, India. It provides details about the Chuzachen hydroelectric power plant located in Sikkim, which has a capacity of 110MW and was built as a privately owned power project. It also notes that Delhi is planning its first hydroelectric plant with a capacity of 20,000kWh per year to be built without cost. The document outlines the basic workings of hydroelectric plants and compares the advantages and disadvantages of hydroelectric power versus other renewable energy sources.
Tidal energy
Tidal energy harnesses the kinetic energy of tides to generate electricity. Tides are caused by the gravitational forces of the moon and sun. There are two main methods to capture tidal energy - tidal barrages use dams and turbines to capture potential energy differences between high and low tides, while tidal stream generators use underwater turbines similar to wind turbines to capture the kinetic energy of moving water currents. India has an estimated potential of 8000 MW of power from tidal sources concentrated in the Gulf of Cambay and Gulf of Kutch. While tidal energy has advantages of being predictable, renewable and improving technologies are lowering costs, challenges include high initial costs and potential environmental impacts which require further study.
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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.
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1introduction to tidal energy
- 2. INTRODUCTION Tidal energy is a form of hydropower that converts the energy of the tides into electricity or other useful forms of power. The tide is created by the gravitational effect of the sun and the moon on the earth causing cyclical movement of the seas. Since tides are more predictable than wind energy and solar power. Thus they are leading renewable source of energy for future electricity generation.
- 3. Types of tidal energy technologies Tidal range technologies Tidal stream technologies Hybrid technologies
- 4. Tidal Range Technology tidal range technologies use a barrage – a dam or other barrier – to harvest power from the difference between high and low tide. The power is generated through tidal turbines (most of them come from hydropower design, such as bulb turbines) located in the barrage.
- 5. Tidal Stream Technology A tidal stream generator is a machine that converts energy from moving mass of water. It is much more like under water wind turbines.
- 6. The largest and newest tidal barrage in the world is the Sihwa dam in north-eastern South Korea, which was built in 2011 and became operational in 2012. The Sihwa dam, with a capacity of 254 MW
- 7. Estimated construction costs for existing and proposed tidal barrages
- 8. Advantages It is an inexhaustible source of energy. It does not produce green house gases. Efficiency of tidal power is far greater than coal, solar, and wind energy. Maintenance cost is very low. Life of tidal energy power plant is very long.
- 9. Disadvantage Cost of construction of tidal power plant is very high. There are very few ideal location for construction of plant. Influence aquatic life adversely. Since tidal energy plant is located near costal area so it is very difficult to supply energy at a very long distance. Transmission is difficult.
- 10. Conclusion Tidal energy is a kind of renewable energy with large potential, it has many advantages over solar and wind energy. The energy density if tides is also higher than solar and wind energy. With the development of innovative tidal turbine system and coastal infrastructure, the popularization of tidal energy world wide can be expected.