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wellsann99

wind-energy-industry - 0 views

www.noblepower.com/...wind-energy-industry1.html

wind history

shared by wellsann99 on 12 Mar 13 - No Cached
  • The U.S. has had modern, commercial-scale wind power for more than two decades. The first domestic wind farms were constructed in California in the early 1980s.  The U.S. wind industry reached its first 1,000 megawatts of installed capacity in 1985, but then took more than a decade to reach 2,000 megawatts in 1999.  Since 1999, however, the installed capacity has increased fivefold.  Today, wind energy is the nation's fastest growing source of commercial-scale power.  
  • wellsann99 on 12 Mar 13
     
    how long has wind industry existed in the united states
jack wells

My Library for wind - 0 views

www.diigo.com/my

sustainable wind

shared by jack wells on 12 Mar 13 - No Cached
  • One of the most important is that wind power is the least expensive of all other forms of alternative energy.  Wind turbines generate electricity at around 5 cents per kWh (Kilowatt Hour), which is comparable to the new coal and/or oil burning power plants.  The costs are projected to decline even more as technology improves, and this is very important because most of the cost with wind power is in manufacturing.  Once the wind turbines are in place there is little cost to maintain and wind power is free.
  • jack wells on 12 Mar 13
     
    "One of the most important is that wind power is the least expensive of all other forms of alternative energy.  Wind turbines generate electricity at around 5 cents per kWh (Kilowatt Hour), which is comparable to the new coal and/or oil burning power plants.  The costs are projected to decline even more as technology improves, and this is very important because most of the cost with wind power is in manufacturing.  Once the wind turbines are in place there is little cost to maintain and wind power is free."
mchughkon99

Tidal Power: Pros and Cons - 0 views

www.triplepundit.com/...tidal-power-pros-cons

tide history

shared by mchughkon99 on 12 Mar 13 - No Cached
  • Day and night, the vast waters of the ocean press and recede along the shorelines of Earth’s every continent in accordance to the celestial movements of our planet in relation to the sun and the moon
  • ay and night, the vast waters of the ocean press and recede along the shorelines of Earth’s every continent in accordance to the celestial movements of our planet in relation to the sun and the moon
  • Records of ocean power conversion date back to 900A.D. where the power of tidal movement was used to grind grains. The first modern commercial tidal power was installed off the coast of St. Malo, in Northern France. installed in 1965, it has been operating continuously since then, producing 240 MW with every tide.
  • mchughkon99 on 12 Mar 13
     
    how the tides move to create energy
olearydev99

Fuel Cells are not Pollution Free: Where Will the Water Go? - 0 views

www.roperld.com/...fuelcellspollution.htm

fuel cell pollution

shared by olearydev99 on 12 Mar 13 - No Cached
  • olearydev99 on 12 Mar 13
     
    "When hydrogen combines with oxygen to produce water in a fuel cell the hydrogen is taken from a tank carried in the vehicle and the oxygen is taken from the air (as it is in gasoline-combustion vehicles). The reaction is 2 H2 + O2 -> 2 H2O . So, for every 2 hydrogen atoms taken from the fuel tank, 1 oxygen atom is taken from the air. An oxygen atom is about 16 times more massive than a hydrogen atom, so the water molecule is 9 times [(16 + 2) / 2] more massive than the 2 hydrogen atoms used to make it."
greenhan99

How is Biofuel Made - 0 views

www.agrabiofuels.com/howisbiofuelmade.html

biofuel convert

shared by greenhan99 on 08 Mar 13 - No Cached
  • Where does the first phase for biofuel production begin? The sun takes credit for the very first step in this process. The sun helps to grow crops and plants, which are then eventually used to produce biofuel. Biofuel is actually derived from biomass, which can come from gas, solid and liquid states.
  • These crops that are specifically grown to be used to produce biofuels are referred to as feedstocks. These feedstocks are the raw and unprocessed form that the bio fuel is derived from. Among the more common types of feedstocks and crops that are used for the production of biofuels are corn, sugar crops, and forests. In addition, even some of the byproducts of materials such as those that come from wood can be used In this process. These special byproducts are often converted to the liquid forms of biofuels, which Include methanol and ethanol. With the ability to use these byproducts, production methods have gotten a lot less expensive sInce there is much less waste Involved.
  • In addition, there are also certaIn natural oils that are also used to help produce this special type of fuel. For example, oil palm, soybean and algae are surprisIngly capable of beIng burned directly In certaIn types of furnaces and engInes and can also be blended with certaIn types of fuels or petroleum based fuels for a more powerful blended mixture.
  • ...2 more annotations...
  • Where does the first phase for biofuel production begin? The sun takes credit for the very first step in this process. The sun helps to grow crops and plants, which are then eventually used to produce biofuel. Biofuel is actually derived from biomass, which can come from gas, solid and liquid states.
  • Another means of producing biofuel that has proven to be especially efficient and cost effective is the conversion of vegetable oil to a burnable fuel that can be used with most types of engines.
mannixjul00

Tidal Energy | Marine Current Turbines - 0 views

www.marineturbines.com/Tidal-Energy

tidal tide

shared by mannixjul00 on 11 Mar 13 - No Cached
  • idal turbines are very much like an underwater windmill where the blades are driven by consistent, fast-moving currents.  The submerged rotors harness the power of the tidal streams to drive generators, which in turn produce electricity. Water is 832 times denser than air so consequently tidal turbine rotors can be are much smaller than wind turbine rotors generate equivalent  amounts of electricity, and they can be deployed much closer together. Devices that harness tidal stream energy present a unique set of engineering challenges in terms of design, installation and maintenance. During operation, the force of the tidal flow in Strangford Lough is equivalent to a 345 mph wind generating a 100 tonnes of thrust on the rotors. The unique SeaGen design allows capture of the maximum amount of tidal energy whilst keeping maintenance and connectivity costs low.
  • Tidal turbines are very much like an underwater windmill where the blades are driven by consistent, fast-moving currents.  The submerged rotors harness the power of the tidal streams to drive generators, which in turn produce electricity. Water is 832 times denser than air so consequently tidal turbine rotors are much smaller than wind turbine rotors generate equivalent  amounts of electricity, and they can be deployed much closer together. Devices that harness tidal stream energy present a unique set of engineering challenges in terms of design, installation and maintenance. During operation, the force of the tidal flow in Strangford Lough is equivalent to a 345 mph wind generating a 100 tonnes of thrust on the rotors.
  • kramerjac99 on 11 Mar 13
     
    How it works.
kramerjac99

Lockheed Martin · Wave and Tidal Energy - 0 views

www.lockheedmartin.com/...wave-tidal-energy.html

tidal energy

shared by kramerjac99 on 11 Mar 13 - No Cached
  • Tremendous potential exists for clean energy in waves and tides. Lockheed Martin Mission Systems and Sensors (MS2) is leveraging decades of experience in designing and developing maritime systems into wave and tidal power systems. To do that, we have strategic relationships with key wave and tidal power technology providers. They will provide the technology to convert waves and tides into energy, and MS2 will provide the expertise to help make the systems work in harsh ocean environments and scalable for large-scale production. Wave power generates electricity using special buoys that use the rising and falling of ocean waves to generate electricity. MS2 is partnering with Ocean Power Technologies, inc. (OPT) and WaveBob LLC to develop their respective wave energy systems for use in future utility-scale power generation projects. MS2 provides its expertise in systems integration, lean manufacturing, and test and optimization analysis to enhance OPT's and Wavebob’s wave power generation technology to utility-scale. Tidal power generating systems use underwater turbines designed to capture the kinetic motion of ebbing and surging ocean tides to produce power. MS2 provides design and manufacturing support to Singapore-based Atlantic Resources Corporation (ARC), which is testing its tidal turbines at the European Marine Energy Centre in Orkney, Scotland. MS2 is also exploring related technologies that can be adapted to shallow and low-rate tidal flows.
  • kramerjac99 on 11 Mar 13
     
    what is used to make it work
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
  • ...3 more annotations...
  • 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."
tvedepai00

Devices that Harness Wave Energy | Wave Energy Cost - 2 views

www.oceanenergycouncil.com/...Wave-Energy.html

cost wave pollution

shared by tvedepai00 on 11 Mar 13 - Cached
  • Wave energy is an irregular and oscillating low-frequency energy source that can be converted to a 60-Hertz frequency
  • Kinetic energy, the energy of motion, in waves is tremendous. An average 4-foot, 10-second wave striking a coast puts out more than 35,000 horsepower per mile of coast.
  • Because wave energy needs only 1/200 the land area of wind and requires no access roads, infrastructure costs are less;
  • ...9 more annotations...
  • It varies in intensity, but it is available twenty-four hours a day, 365 days a year.
  • or now, the best wave generator technology in place in the United Kingdom is producing energy at an average projected/assessed cost of 7.5 cents kWh. in comparison, electricity generated by large scale coal burning power plants costs about 2.6 cents per kilowatt-hour.
  • As long as
  • the sun shines, wave energy will never be depleted
  • produce energy at about 4.5 cents kWh.
  • 7.5 cents kWh
  • In comparison, electricity generated by large scale coal burnIng power plants costs about 2.6 cents per kilowatt-hour.
  • about 3 cents per kilowatt hour
  • Wave energy devices are quieter and much less visually obtrusive than wind devices
butlerlei98

tidal energy - National Geographic Education - 0 views

education.nationalgeographic.com/...tidal-energy

current tide

shared by butlerlei98 on 11 Mar 13 - No Cached
  • Tidal energy is produced by the surge of ocean waters during the rise and fall of tides.
  • During the 20th century, engineers developed ways to use tidal movement to generate electricity in areas where there is a significant tidal range—the difference in area between high tide and low tide. All methods use special generators to convert tidal energy into electricity.
  • For most tidal energy generators, turbines are placed in tidal streams. A tidal stream is a fast-flowing body of water created by tides. A turbine is a machine that takes energy from a flow of fluid.
  • ...1 more annotation...
  • The world's first tidal power station was constructed in 2007 at Strangford Lough in Northern Ireland. The turbines are placed in a narrow strait between the Strangford Lough inlet and the Irish Sea. The tide can move at 4 meters (13 feet) per second across the strait.
  • butlerlei98 on 11 Mar 13
     
    ". The United States has no tidal plants and only a few sites where tidal energy could be produced at a reasonable price."
kilburnzac00

How Much Solar Energy is Used in the World? | Solar Energy Facts - 1 views

solarenergyfactsblog.com/ar-energy-is-used-in-the-world

much energy world US How solar power

shared by kilburnzac00 on 11 Mar 13 - No Cached
  • How much solar energy is used in the world? Global capacity for solar energy production reached 39.8 GigaWatts (0.0398 terawatts) in 2010 . Here are the top 10 solar energy producing countries in the world:
  • United States (1,650 MW
  • whalenkil98 on 11 Mar 13
     
    how much solar energy is used in the US
stewartlas97

Wind - 0 views

www.esru.strath.ac.uk/...wind.htm

shared by stewartlas97 on 13 Mar 13 - No Cached
  • stewartlas97 on 13 Mar 13
     
    "This movement is complicated by several other factors that means wind does not always flow from the equator in the direction of either pole. The rotation of the earth creates a force known as the Coriolis force and this factor along with the temperature differences create winds at high altitudes above the earth on a large scale. These Geostrophic winds play a part in the wind's that affect us in everyday life, but local winds are largely affected by the surface of the earth - which is neither uniform or smooth. The earth has large flat plains (desert regions), areas covered with plant life (rainforests), very uneven regions (mountain ranges) and very smooth regions (seas and oceans), all of which affect the wind near the surface of the earth to varying degrees. These areas of the earth all have different values of roughness, which can impeded the flow of air. Obviously the lower the value of roughness the less the air is impeded."
mchughkon99

Directory:Cents Per Kilowatt-Hour - PESWiki - 0 views

peswiki.com/...ectory:Cents_Per_Kilowatt-Hour

fossil fuels cost

shared by mchughkon99 on 22 Mar 13 - No Cached
  • GasCurrently supplies around 15% of the global electricity demand. 3.9 - 4.4 Cents/kW-h Gas-fired plants and generally quicker and less expensive to build than coal or nuclear, but a relatively high percentage of the cost/KWh is derived from the cost of the fuel. Due to the current (and projected future) upwards trend in gas prices, there is uncertainty around the cost / KWh over the lifetime of plants. Gas burns more cleanly than coal, but the gas itself (largely methane) is a potent greenhouse gas. Some energy conversions to calculate your cost of natural gas per kwh. 100 cubic feet (CCF)~ 1 Therm = 100,000 btu ~ 29.3 kwh. CoalCurrently supplies around 38% of the global electricity demand. 4.8 - 5.5 Cents/kW-h increasingly difficult to build new coal plants in the developed world, due to environmental requirements governing the plants. Growing concern about coal fired plants in the developing world (China, for instance, imposes less environmental overhead, and has large supplies of high sulphur content coal). The supply of coal is plentiful, but the coal generation method is perceived to make a larger contribution to air pollution than the rest of the methods combined. NuclearCurrently supplies around 24% of the global electricity demand. 11.1 - 14.5 Cents/kW-h Political difficulties in using nuclear in some nations. Risk of widespread (and potentially lethal) contamination upon containment failure. Fuel is plentiful, but problematic. Waste disposal remains a significant problem, and de-commissioning is costly (averaging approximately US $320MM per plant in the US).
  • mchughkon99 on 22 Mar 13
     
    cost for fossil fuels
barnardnat99

U.S. Installed Record 13.2 Gigawatts Of WInd Energy In 2012 - Forbes - 0 views

www.forbes.com/...gawatts-of-wind-energy-in-2012

wind

shared by barnardnat99 on 22 Mar 13 - No Cached
  • With a key federal tax incentive about to expire, the U.S. installed a 5.5 gigawatts of wind power in December to cap off a year that saw a record 13.2 gigawatts of wind energy come online, according to a report released Friday by research firm Bloomberg New Energy Finance. The U.S. now boasts a total of 60 gigawatts of wind energy, accounting for 6% of the nation’s total generating capacity. According to Bloomberg New Energy Finance, wind power prices have dropped more than 21% since 2010. Falling prices and the looming expiration of the production tax credit, which pays a premium for wind energy, unleashed a wind farm building boom last year. “It’s clear that the economics, aided by the PTC, drove wind growth in 2012,” Amy Grace, a wind analyst with Bloomberg New Energy Finance, said in a statement. “Eleven gigawatts of capacity was built in states without any near-term state mandated demand.
rascoekat00

Where is tidal power being used to generate electricity - 0 views

wiki.answers.com/...g_used_to_generate_electricity

tide power convert electricity

shared by rascoekat00 on 19 Mar 13 - No Cached
  • Barrage systems. This system, built like a dam across a river, holds back the water till the tide has gone out, then uses the potential energy of the water to turn turbines in the barrage. This is an expensive system with many disadvantages.
  • Tidal Stream systems. This consists of using turbines, rather like wind turbines, to use the kinetic power of the moving water to generate electricity. This is easier and cheaper to install.
  • There are three Barrage systems operating throughout the world. One large 240 MW plant on the Rance River in France, and two small plants, one in the Bay of Fundy in Canada, and another in Kislaya Guba in Russia.
hughesacam99

Wave Energy Pros and Cons - Tidal and Ocean Wave Power Still Niche Technologies | Green World Investor - 2 views

www.greenworldinvestor.com/...power-still-niche-technologies

pros wave energy

shared by hughesacam99 on 22 Oct 12 - No Cached
  • Wave Power is quite immature,costly and unproven in large scale. While some companies have made good progress, the technology remains largely unproven and has only been put to actual test in pilot cases.
  • While Wave Energy has been known since the 1700s the progress has been extremely slow.
  • One of the biggest problems of Renewable Power is that it is intermittent in nature as it generates energy only when there are waves. This problem can be solved with energy storage however this leads to additional costs.
  • ...8 more annotations...
  • Severe Weather like Storms and Typhoons can be quite devastating on the Wave Power Equipment especially those place on the Sea Floor.
  • This is a disadvantage which is common to all  the 3 types of Water based Energy that is Tidal, Hydro and Waver Energy. Some forms of Energy are just better suited to some places.
  • Wave Power generate power quite far away from the consumption of electricity. Transportation of Wave Energy can be quite cumbersome and expensive. Some Wave Energy Generators are converting power at the bottom of the ocean or far away from the shoreline. Moving that power towards where it is used can be difficult.
  • The sight of wave generators around the shoreline can look quite ugly and cause loss of tourism potential around shorelines. Also local residents can have problems even with wave power equipment which is not far offshore. The Cape Wind Energy project off the shore of Massachusetts has been delayed by over 10 years as it has drawn serious objections from the owners of coastal homes about loss in their property values.
  • A Wave Power Plant can cost around$6-10 million million to be spent in building 1 Megawatt.
  • Waver Energy does not require any fuel like most other sources of energy
  • Wave Energy is powered by the waves of the ocean which are totally free just like Wind and Sunlight.
  • Wave Energy Generators can be installed in various sizes with as little as 1 MW. This is not possible for other energy forms which require a minimum large size such as Coal, Nuclear etc.
slentzkel99

Haldor Topsoe - Fuel cells for sustainable energy - 0 views

www.topsoe.com/...fuel_cells.aspx

hydrogen what convert use

shared by slentzkel99 on 23 Oct 12 - No Cached
  • What is a fuel cell?A fuel cell produces electricity from fuel and air. The simplest fuel cell produces electricity from hydrogen and air with water as the only by-product.
  • Where can fuel cells be used?Fuel cells in general can be used in many different circumstances, depending on the type of fuel cell. Topsoe Fuel Cell focuses on SOFC fuel cells, which can be used in:Auxiliary power units (APUs) provide electricity where there is no access to grid power. Fuel cell based APUs can be used on, for instance, long-haul trucks to generate power during breaks.Micro combined heat and power units may be scaled to meet the electricity demand in single family households. Combined heat and power generation for households is one of the most efficient ways to meet residential energy requirements.Distributed generation using SOFC technology offers efficient power generation, for example hospitals, shopping malls, in apartment buildings and in areas with low power capacity.
pondalb98

Wind Program: History of Wind Energy - 2 views

www1.eere.energy.gov/...wind_history.html

wind history

shared by pondalb98 on 03 Nov 11 - No Cached
  • Since early recorded history, people have been harnessing the energy of the wind. Wind energy propelled boats along the Nile River as early as 5000 B.C. By 200 B.C.,
  • Commonly called wind turbines, these machines appeared in Denmark as early as 1890. in the 1940s the largest wind turbine of the time began operating on a Vermont hilltop known as Grandpa's Knob. This turbine, rated at 1.25 megawatts in winds of about 30 mph, fed electric power to the local utility network for several months during World War II.
  • Since early recorded history, people have been harnessing the energy of the wind
  • ...1 more annotation...
  • However, industrialization also sparked the development of larger windmills to generate electricity. Commonly called wind turbines, these machines appeared in Denmark as early as 1890. in the 1940s the largest wind turbine of the time began operating on a Vermont hilltop known as Grandpa's Knob. This turbine, rated at 1.25 megawatts in winds of about 30 mph, fed electric power to the local utility network for several months during World War II.
dpurdy

HowStuffWorks "How the Hydrogen Economy Works" - 3 views

auto.howstuffworks.com/...hydrogen-economy4.htm

fuel cell form convert

shared by dpurdy on 03 Nov 11 - No Cached
  • In the hydrogen economy, there is no storehouse to tap Into. We have to actually create the e­nergy In real-time.
  • There are two possible sources for the hydrogen: Electrolysis of water - Using electricity, it is easy to split water molecules to create pure hydrogen and oxygen. One big advantage of this process is that you can do it anywhere. For example, you could have a box in your garage producing hydrogen from tap water, and you could fuel your car with that hydrogen. Reforming fossil fuels - Oil and natural gas contain hydrocarbons -- molecules consisting of hydrogen and carbon. Using a device called a fuel processor or a reformer, you can split the hydrogen off the carbon in a hydrocarbon relatively easily and then use the hydrogen. You discard the leftover carbon to the atmosphere as carbon dioxide.
  • To have a pure hydrogen economy, the hydrogen must be derived from renewable sources rather than fossil fuels so that we stop releasing carbon into the atmosphere. Having enough electricity to separate hydrogen from water, and generating that electricity without using fossil fuels, will be the biggest change that we see in creating the hydrogen economy.
  • ...2 more annotations...
  • In the future, barrIng some technological breakthrough, it seems likely that one of two thIngs will happen to create the hydrogen economy: Either nuclear-power or solar-power generatIng capacity will Increase dramatically.
  • The electrical-generation problem is probably the biggest barrier to the hydrogen economy
dpurdy

OWECO By Others - 1 views

www.owec.com/byOTHERS.html

wave form

shared by dpurdy on 03 Nov 11 - No Cached
  • ocean waves is long considered substantive kinetic resource
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