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sconzomic99

What is tidal energy - How tidal works? - Tidal energy - 0 views

www.solarpowernotes.com/...tidal-energy.html

tide energy cost sustainable

shared by sconzomic99 on 11 Mar 13 - Cached
  • tidal energy uses tidal strength of water and back and forth movement  in seas, rivers or oceans. Tidal power exploits kinetic energy of water that power water turbines with its movement between the wings which rotate the turbine to produce electricity.
  • For producing significant amount of energy out of tidal water turbines, range of tides should be high and substantial amount of water should be there for pushing water through the turbine.
  • It is significantly important to spot the appropriate place which provide suitable and sustainable conditions to produce tidal energy, there are plenty of places around the globe which provide good conditions for installing water turbines and then produce electricity use tidal power of oceans in the location.
  • ...5 more annotations...
  • Once tidal power plant is built its’ electricity is free. It does not emit greenhouse gasses, carbon emission gasses which pollute environment. It does not have any dependency of any fossil fuel including furnace oil, gasses, etc; it needs no oil what so ever to produce electricity. Tidal power technology is renewable energy, which uses tidal and waves of same water for producing electricity over and over again. Tidal power technology like all renewable energy is clean energy and does not leave much impact on environment. Tidal power plants does not require much maintenance, therefore it is maintenance cost free. Tidal energy stations have about 80 % efficiency ratio, where as fossil fuel have approximately 30 % for efficiency levels. Tides in oceans are very predictable, its easy to judge when strong tides are going to show up from water consider weather and other conditions. The better tides and wave strengths of the oceans is, improved the efficiency of the station is. Electricity does not fluctuate on large scale using tidal energy as it happens in solar power technology.
  • Electricity can only be produced when tides are high in the sea, once ocean is calm and does not flow certain level of waves, it cannot produce electricity. Therefore electricity can be produced for only 10 hrs a day in presence of tides.
  • Tidal power plants are not cost effective. Millions of dollars are utilized for developing tidal power which could provide electricity in Megawatts.
  • Once tidal power plant is built its’ electricity is free. It does not emit greenhouse gasses, carbon emission gasses which pollute environment. It does not have any dependency of any fossil fuel including furnace oil, gasses, etc; it needs no oil what so ever to produce electricity. Tidal power technology is renewable energy, which uses tidal and waves of same water for producing electricity over and over again. Tidal power technology like all renewable energy is clean energy and does not leave much impact on environment. Tidal power plants does not require much maintenance, therefore it is maintenance cost free. Tidal energy stations have about 80 % efficiency ratio, where as fossil fuel have approximately 30 % for efficiency levels. Tides in oceans are very predictable, its easy to judge when strong tides are going to show up from water consider weather and other conditions. The better tides and wave strengths of the oceans is, improved the efficiency of the station is. Electricity does not fluctuate on large scale using tidal energy as it happens in solar power technology.
  • not appropriate to risk £15 millions worth of money. This is the main reason why this project is yet start
westkea00

Wave Power - 1 views

www.thinkglobalgreen.org/WAVEPOWER.html

shared by westkea00 on 30 Oct 12 - No Cached
  • The World Energy Council has estimated that approximately 2 terawatts (2 million megawatts), about double current world electricity production, could be produced from the oceans via wave power.
  • Wave energy is generally considered to be the most concentrated and least variable form of renewable energy. It is the high power density of wave energy that suggests it has the capacity to become the lowest cost renewable energy source.
  • Wave energy is a renewable, zero emission source of power
logansar99

Wave Energy - 2 views

ocsenergy.anl.gov/...index.cfm

wave location

shared by logansar99 on 22 Oct 12 - Cached
  • northwestern coasts of the United States.
  • Positive or negative impacts on marine habitat (depending on the nature of additional submerged surfaces, above-water platforms, and changes in the seafloor);
  • Toxic releases from leaks or accidental spills of liquids used in those systems with working hydraulic fluids;
  • ...3 more annotations...
  • Conflict with other sea space users, such as commercial shipping and recreational boating;
  • Visual and noise impacts (device-specific, with considerable variability in visible freeboard height and noise generation above and below the water surface)
  • Wave power varies considerably in different parts of the world, and wave energy can't be harnessed effectively everywhere
sopranodan99

What Causes Ocean Waves? - EnchantedLearning.com - 0 views

www.enchantedlearning.com/...Waves.shtml

wave form

shared by sopranodan99 on 20 Sep 13 - Cached
  • The winds cause waves on the surface of the ocean (and on lakes). The wind transfers some of its energy to the water, through friction between the air molecules and the water molecules. Stronger winds (like storm surges) cause larger waves.
westkea00

Pelamis Wave Power - 0 views

www.pelamiswave.com/pelamis-technology

shared by westkea00 on 25 Sep 13 - No Cached
  • The Pelamis is an offshore wave energy converter that uses the motion of waves to generate electricity.
  • The machine operates in water depths greater than 50m and is typically installed 2-10km from the coast. The machine is rated at 750kW with a target capacity factor of 25-40 per cent, depending on the conditions at the chosen project site. On average one machine will provide sufficient power to meet the annual electricity demand of approximately 500 homes.
  • The Pelamis machine is made up of five tube sections linked by universal joints which allow flexing in two directions. The machine floats semi-submerged on the surface of the water and inherently faces into the direction of the waves. As waves pass down the length of the machine and the sections bend in the water, the movement is converted into electricity via hydraulic power take-off systems housed inside each joint of the machine tubes, and power is transmitted to shore using standard subsea cables and equipment.
rosskyl99

Wave Energy Conference Strikes at Climate Change - Front Page Journal - - 0 views

www.ecori.org/...strikes-at-climate-change.html

wave sustainable

shared by rosskyl99 on 12 Mar 13 - No Cached
  • As a renewable energy, offshore wind and wave energy can provide a constant energy supply that solar and onshore wind lack, he said.
  • rosskyl99 on 12 Mar 13
     
    renewable energy 
rodriguezjos99

Five Reasons Why Tidal Energy is the Wave of the Future - Green Living Ideas - 3 views

greenlivingideas.com/...ergy-is-the-wave-of-the-future

tide future co2 pollution

shared by rodriguezjos99 on 11 Mar 13 - No Cached
  • Green energy has never been more important than it is today with the looming threat of global warming. Every possible effort must be made to reverse the worldwide threat of climate change by subsidizing and switching to green energy. One often-overlooked source of clean, renewable energy comes not from solar, wind or geothermal power, but from the tides.
  • Tidal Energy is valuable to environmentalists because unlike fossil fuels the source of energy will not be depleted in the foreseeable future no matter how much energy is collected.
  • The collection of tidal energy is clean because it involves very little emission of carbon dioxide and other greenhouse gases
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  • The pattern of tides is extremely stable and not strongly affected by weather conditions which suggests that it would be a very stable source of green energy.
  • Moving water can exert a much greater force on a turbine than wind which means the turbine can turn slowly and still produce a great deal of electricity. The slow and stable tidal forces are ideal parameters for engineering energy solutions. The fact that the turbines can be slow-moving makes it easier to avoid interfering with local ecosystems
  • While the initial cost of building tidal energy plants is high, the plants are expected to run for a very long time which will make them more cost-effective in the long run
  • rodriguezjos99 on 13 Mar 13
     
    "Five Reasons Why Tidal Energy is the Wave of the Future JANUARY 4, 2013 BY GUEST CONTRIBUTOR LEAVE A COMMENT Join GLI's 10,000 other followers on Twitter! Green energy has never been more important than it is today with the looming threat of global warming. Every possible effort must be made to reverse the worldwide threat of climate change by subsidizing and switching to green energy. One often-overlooked source of clean, renewable energy comes not from solar, wind or geothermal power, but from the tides. 1. Tidal Energy is Renewable Tidal Energy is valuable to environmentalists because unlike fossil fuels the source of energy will not be depleted in the foreseeable future no matter how much energy is collected. The gravitational relationship between the Earth and the moon is extremely stable in the long term just like solar, wind and geothermal energy. 2. Tidal Energy is Green The collection of tidal energy is clean because it involves very little emission of carbon dioxide and other greenhouse gases. However, the marine ecosystem is fragile and great care must be taken to avoid interfering with the lives of organisms that depend on the tide."
dpurdy

Wave power conversion systems for electrical energy production | Leonardo ENERGY - 1 views

www.leonardo-energy.org/s-electrical-energy-production

wave convert

shared by dpurdy on 30 Oct 12 - No Cached
  • Sea waves have associated a form of renewable energy which can be captured by using a hydro mechanical device that in turn drives an electrical generator to produce electrical energy.
logansar99

EIA Renewable Energy-" Renewable Energy Consumption and Electricity Preliminary 2006 St... - 1 views

www.eia.gov/...rea_prereport.html

wave current

shared by logansar99 on 22 Oct 12 - No Cached
    • logansar99
      logansar99 on 24 Oct 12
       
      Wave energy isn't on this chart, so it's mainly experimental.
  • logansar99 on 22 Oct 12
     
    There is a graphic that shows we don't use much wave energy it's mainly experimental.
baileyamb99

How Is Wave Energy Used to Generate Electricity? | eHow.com - 0 views

www.ehow.com/sed-generate-electricity_.html

converted

shared by baileyamb99 on 22 Oct 12 - No Cached
  • Earth is composed mainly of bodies of water---about 71 percent of the earth's surface is water. Ninety-seven percent of that is found in the oceans. Because the earth's surface is curved, the sun heats it unevenly. This causes winds to blow across the water and generate waves. The sun and moon also exert their gravitational pull on the earth, triggering wave-producing tides. Wave motion energy can be harnessed and generated into electricity.
logansar99

BBC NEWS | Technology | Wave farms show energy potential - 1 views

news.bbc.co.uk/...6410839.stm

wave future change current

shared by logansar99 on 24 Oct 12 - Cached
  • Ocean waves carry tremendous power, and could, in theory at least, provide much of the world's electricity.
  • "What gives us tremendous hope with this technology is that our opening costs are substantially below where wind power started 20, 25 years ago."
  • Wind power has reduced its cost by 80% since, as the technology has been deployed and optimised, he says.
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  • Ms Pontes says wave energy could someday supply 20% of Portugal's power.
  • "That's equal to about six-and-a-half percent of our total capacity in the United States, equal to all the dams that we have in the US right now."
  • The European Union has proposed a commitment to generate 20% of its energy from renewable sources by the year 2020.
hughesacam99

Pros & Cons of Wave Energy | eHow.com - 0 views

www.ehow.com/045_pros-cons-wave-energy.html

pollution pros wave energy

shared by hughesacam99 on 23 Oct 12 - No Cached
  • Unlike fossil fuels, wave power doesn't cause air pollution.
thibodeaueth00

Wave & Tidal Energy | Market | BioPower Systems - 0 views

www.biopowersystems.com/market.html

wave sustainable

shared by thibodeaueth00 on 23 Sep 13 - No Cached
  • The growth of the waves depends on the strength of the wind, its duration, and the open ocean distance (fetch) over which it blows
  • Ocean waves are created by surface winds.
westkea00

Voith | Wave power plants - 0 views

www.voith.com/...wave-power-plants-590.html

shared by westkea00 on 25 Sep 13 - No Cached
  • With this technology, sea water turbines do not come into contact with water
  • Instead, a column of air is set in motion which drives the machines. In detail, this works in the following manner: The waves spill into a hollow container which is open to the sea. This compresses and calms the air column in a so-called collector in a similar way to how an air pump works. The power plant "breathes" in and out. The pressure difference is then turned into rotary energy in a so-called Wells turbine (named after its inventor). This is in turn passed to a generator where electricity is produced. This means that the turbine has the air periodically flow through it from both sides, depending on whether the device is "breathing" in or out. Because of the special rotor geometry, there is no need to either periodically change the blade angles or the direction of rotation. If you consider the fact that an average of some 3 million waves break on to the coast every year, it is clear that only this simple turbine design can offer maximum reliability.
westkea00

An electrical approach to wave energy conversion - 0 views

www.sciencedirect.com/...S0960148105002120

shared by westkea00 on 25 Sep 13 - No Cached
  • Motions in nature, for example ocean waves, can play a significant role in tomorrow's electricity production, but the constructions require adaptations to its media. Engineers planning hydropower plants have always taken natural conditions, such as fall height, speed of flow, and geometry, as basic design parameters and constraints in the design
  • Extensive simulations of the wave energy concept are presented, along with results from the experimental setup of a multisided permanent magnet linear generator. The prototype is designed through systematic electromagnetic field calculations. The experimental results are used for the verification of measurements in the design process of future full-scale direct wave energy converters. The present paper, describes the energy conversion concept from a system perspective, and also discusses the economical and some environmental considerations for the project.
westkea00

Waves - Photography by David Orias | Ecology Global Network - 0 views

www.ecology.com/...waves-david-orias

shared by westkea00 on 25 Sep 13 - No Cached
  • Waves are generated by low pressure weather systems sometimes thousands of miles from where they will break on the shore. Waves are born from high winds pushing the surface of the ocean
wrighteri99

Tidal Wave Energy: New cutting edge technologies - 0 views

www.bionomicfuel.com/-new-cutting-edge-technologies

future change

shared by wrighteri99 on 05 Nov 12 - No Cached
  • Tidal wave energy
  • Environmentally friendly power sources which are clean and do not cause pollution or environmental harm are the key to the future
  • one direction
  • wrighteri99 on 05 Nov 12
     
    What do we have to do to make this resource work for us in the future?
gonzalezisa00

Environment for Kids: Wave and Tidal Energy - 0 views

www.ducksters.com/...wave_and_tidal_energy.php

history

shared by gonzalezisa00 on 12 Mar 13 - No Cached
  • There are also three main ways that tidal energy is harnessed: Tidal Barrages - A tidal barrage works like a dam. When the tide goes high, the reservoir fills up. When the tide drops the dam lets the water out. In both directions the moving water can spin the blades of turbines to create electricity. Tidal Fences - These are smaller structures than a barrage. A number of vertical turbines form a fence between two land masses. When the tide moves in or out, the turbines spin and generate electricity. Tidal Turbines - These are individual turbines placed anywhere there is a strong tidal flow.
  • Tidal power to turn water wheels and grind grains was used as far back as Roman times and the Middle Ages. The idea of using tidal power for electricity is fairly recent, but the costs have been too high to make it a major energy source. Recent technological advances have shown that it could become a competitive and viable source
  • Tidal turbines are more expensive to build and maintain than wind turbines, but produce more energy. They also produce energy more consistently as the tide is continuous while the wind doesn't always blow.
  • ...1 more annotation...
  • Concepts for wave energy have existed since the 1800s, however modern wave technology began in the 1940s with the experiments of scientist Yoshio Masuda
dpurdy

Energy - Ocean and Wave - 0 views

renet-eu-india.com/energywave.php

wave form

shared by dpurdy on 23 Mar 13 - No Cached
  • More than 70% of Earth's surface is covered by oceans which contain two types of energy: mechanical energy from waves and tides and Thermal energy from solar radiations falling on the ocean surface making them the world's largest solar collectors
dpurdy

WHTP Marine Hydrokinetic Technologies Database: Project Profile - 0 views

www1.eere.energy.gov/...GlobalProjectMap.aspx

wave current

shared by dpurdy on 06 Apr 13 - No Cached
  • dpurdy on 06 Apr 13
     
    Current wave energy projects world wide.
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