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dpurdy

Photovoltaics - Lighting the World - 1 views

solardev.com/SEIA-lightworld.php

solar location potential current

shared by dpurdy on 03 Nov 11 - No Cached
  • 200,000 homes in the U.S. use some type of photovoltaic solar technology-and the market is expanding at a healthy 15% annually.
  • PV modules covering 0.3% of the land in the U.S., equivalent to one fourth of the area currently occupied by railroads, could provide all of the US's electricity needs.
  • anonymous on 02 Oct 13
     
    Most quality online stores. Know whether you are a trusted online retailer in the world. Whatever we can buy very good quality. and do not hesitate. Everything is very high quality. Including clothes, accessories, bags, cups. Highly recommended. This is one of the trusted online store in the world. View now www.retrostyler.com
hollale00

Biofuels production | BP Global - 0 views

www.bp.com/...biofuels.html

picture biofuel current

shared by hollale00 on 24 Sep 13 - No Cached
  • hollale00 on 24 Sep 13
     
    World biofuels production declined by 0.4% in 2012, the first decline since 2000. Increased output in South America and Asia Pacific was outweighed by declines in North America and Europe. Global ethanol output declined by 1.7%, the second straight annual decline. Biodiesel production grew by 2.7% and has doubled in the last five years and now makes up 31% of total biofuel supply. All(4) Tools(1) External(1) Downloads(2) 01 Previous Conversion calculator Share your views Historical data Download (xlsx, 1.5MB) Statsistical review 2013 Download (pdf, 9.6MB) Next
dpurdy

Where Geothermal Energy Is Found - Energy Explained, Your Guide To Understanding Energy - Energy Information Administration - 0 views

www.eia.gov/...index.cfm

geothermal location

shared by dpurdy on 11 Nov 12 - No Cached
  • Most Geothermal Resources Are Near Plate Boundaries The most active geothermal resources are usually found along major plate boundaries where earthquakes and volcanoes are concentrated. Most of the geothermal activity in the world occurs in an area called the Ring of Fire. This area encircles the Pacific Ocean.
  • The ring of fire goes around the edges of the Pacific. The map shows that volcanic activity occurs around the Pacific rim.Source: National Energy Education Development Project (Public Domain) Naturally occurring large areas of hydrothermal resources are called
bonnjos98

My Library - 0 views

www.diigo.com/bonnjos98

geothermal

shared by bonnjos98 on 13 Mar 13 - No Cached
  • bonnjos98 on 13 Mar 13
     
    ""It may surprise you to know that the ancient Romans had central heating. They used geothermal energy - in the form of hot springs - to heat their homes. Geothermal heating wasn't used in an organized fashion since until the late 19th century when Boise, Idaho, piped in water from local hot springs to warm buildings. Now, geothermal energy is used globally. Reykjavik, Iceland, leads the world in use of geothermal energy, heating 95 percent of its buildings with heat from below the Earth's surface." more from curiosity.discovery.com - Not Cached - Edit - Delete - Share▼ - Preview"
stewartlas97

History of Wind Power - 0 views

www.windturbinesnow.com/history-wind-power.htm

wind

shared by stewartlas97 on 12 Mar 13 - No Cached
  • stewartlas97 on 12 Mar 13
     
    "China has also laid claims to having invented windmills around 2,000 years ago, but the first documented claims appear in the 1200's. Around 250 A.D. the Romans introduced windmills into their culture and in the 700's so did Afghanistan. The Afghanistan windmills were also of the vertical axis style and cloth sails or reed matting was developed to catch the air. These windmills were used to grind corn and sugarcane plus draw water. In the 13th century Holland started developing large horizontal axis windmills. These four-blade windmills were larger, carried more torque and wind speed and could do more work than other windmills previously designed. The Holland windmills were also being used to grind grains and to drain part of the Rhine River. In the 19th century Denmark had an estimated 2,500 windmills and in the U. S. windmills were starting to be used to pump water. The Halladay windmill of 1854 is one such example of this. The first windmill in the world built for electrical production was in 1887 in Scotland built by Professor James Blyth. A year later in 1888 in the U. S. Charles Brush of Cleveland, Ohio built a large wind turbine used to generate electricity."
hardingmar00

Geothermal energy in the United States - Wikipedia, the free encyclopedia - 0 views

en.wikipedia.org/...al_energy_in_the_United_States

current geothermal

shared by hardingmar00 on 12 Mar 13 - No Cached
  • knightoli99 on 12 Mar 13
     
    "eothermal energy in the United States continues to be an area of considerable activity. In 2012, the United States led the world in geothermal electricity production with 3,386 megawatts (MW) of installed capacity;[1][2] the largest group of geothermal power plants in the world is located at The Geysers, a geothermal field in California.[3] The United States generates an average of 15 billion kilowatt hours of geothermal power per year, comparable to burning some 25 million barrels (4,000,000 m3) of oil or 6 million short tons of coal per year.[4] Geothermal power plants are largely concentrated in the western states. They are the fourth largest source of renewable electricity, after hydroelectricity, biomass, and wind power. A geothermal resource assessment shows that nine western states together have the potential to provide over 20 percent of national electricity needs.[4][5]"
crandallmad00

How Tidal Power is Riding the Crest of a Wave - 1 views

www.renewableenergyworld.com/...-is-riding-the-crest-of-a-wave

tide wave

shared by crandallmad00 on 12 Mar 13 - No Cached
  • The argument for tidal power is overwhelming: it’s a practically infinite supply of clean energy and has one of the smallest carbon footprints of any power source; it’s reliable, cost-efficient, has minimal effect on the marine environment and virtually zero effect on sea-gazing aesthetics. Most importantly, The World Energy Council estimates that the energy that can be harvested from World’s oceans is equal to twice the electricity that the World produces now
  • A reason many energy experts are looking at what tidal may be able to contribute, compared to other renewable sources like wind power, is that the amount of energy generated from a power-generating turbine is proportional to the density of the fluid that flows back and forth – meaning a water turbine has several hundred times the power of an air turbine.
  • Seawater is denser than air; a lot denser – 832 times to be exact, meaning an 8 knot tidal current has more energy than a 380kph wind. This means a wave farm of ‘sea snakes’ – devices built by Scotland’s Pelamis Wave Power – covering half a square mile of ocean could produce 30 MWh of power, which is estimated to be enough for 20,000 homes. A wave farm covering 472 square miles could supply 24 million households – enough for the entire UK.
  • ...1 more annotation...
  • Partly this has been due to the uncertainty of how to harness all this abundant marine energy. While it’s great that there’s the potential to harness up to 153 GW of tidal power in the UK alone,
whalenkil98

How much of the world's energy does the United States use? - FAQ - U.S. Energy Information Administration (EIA) - 0 views

www.eia.gov/...faq.cfm

united states current

shared by whalenkil98 on 15 Mar 13 - No Cached
  • How much of the world's energy does the United States use? In 2009, world total primary energy consumption was 483 Quadrillion Btu. The United States' primary energy consumption was about 95 Quadrillion Btu, about 20% of the world total. Learn More: International Energy Statistics: Total Primary Energy Consumption Last updated: July 9, 2012
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
olearydev99

Climate: Facts, dangers and what you can do | Environmental Defense Fund - 0 views

www.edf.org/...ts-dangers-and-what-you-can-do

climate

shared by olearydev99 on 26 Mar 13 - No Cached
  • olearydev99 on 26 Mar 13
     
    "Scientists track changes to the planet's temperature in many ways. Land-based weather stations and ocean buoys in every corner of the world monitor temperatures constantly."
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.
dpurdy

List of Tidal Power Plants and Future Tidal Stations- Facing Difficult Times | Green World Investor - 0 views

www.greenworldinvestor.com/...tations-facing-difficult-times

tidal future

shared by dpurdy on 30 Oct 12 - No Cached
  • Except for South Korea,not other government in the world is really pushing Tidal Wave Energy which needs massive government support at this stage of development.
  • Tidal Technology is still in the baby phase
  • Most of the tidal power plants using the modern tidal turbine technology are still in the pilot phase and generate negligible power.However tidal power stations have the potential to generate large amounts of energy in a non-polluting way
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
rutalil00

Wind Power - Converting wind energy into electricity - 0 views

www.alternative-energy-news.info/...wind-power

convert

shared by rutalil00 on 22 Oct 12 - No Cached
  • Wind power is produced by using wind generators to harness the kinetic energy of wind. It is gaining worldwide popularity as a large scale energy source, although it still only provides less than one percent of global energy consumption. The articles listed below explore wind power and its usage around the world.
  • Wind power is produced by using wind generators to harness the kinetic energy of wind. It is gaining worldwide popularity as a large scale energy source, although it still only provides less than one percent of global energy consumption. The articles listed below explore wind power and its usage around the world.
  • kurishkri00 on 24 Sep 13
     
    Wind Power News | Wind Power Forum | Wind Power Directory | Videos Wind power is produced by using wind generators to harness the kinetic energy of wind. It is gaining worldwide popularity as a large scale energy source, although it still only provides less than one percent of global energy consumption.
dpurdy

Hydrogen Fuel Alternative - 1 views

www.alternative-energy-resources.net/hydrogenfuelalternative.html

Hydrogen history what

shared by dpurdy on 03 Nov 11 - No Cached
  • Just as solar, hydro and biomass energy has been utilized for thousands of years, hydrogen technology as a fuel source has also been known for over 150 years.
  • Hydrogen is a simple element - an atom with only one proton and one electron. It is also the most plentiful element in the universe. Despite its simplicity and abundance, hydrogen doesn't occur naturally as a gas on the Earth - it is always combined with other elements.
  • Water, for example, is a combination of hydrogen and oxygen. Hydrogen can be separated from hydrocarbons by applying heat, a process known as "reforming" hydrogen.
  • anonymous on 02 Oct 13
     
    Most quality online stores. Know whether you are a trusted online retailer in the world. Whatever we can buy very good quality. and do not hesitate. Everything is very high quality. Including clothes, accessories, bags, cups. Highly recommended. This is one of the trusted online store in the world. View now www.retrostyler.com
dpurdy

Wind Program: Advantages and Challenges of Wind Energy - 1 views

www1.eere.energy.gov/...wind_ad.html

Wind pollution future challenges

shared by dpurdy on 03 Nov 11 - No Cached
  • Challenges Wind power must compete with conventional generation sources on a cost basis. Depending on how energetic a wind site is, the wind farm may or may not be cost competitive. Even though the cost of wind power has decreased dramatically in the past 10 years, the technology requires a higher initial investment than fossil-fueled generators. Good wind sites are often located in remote locations, far from cities where the electricity is needed. Transmission lines must be built to bring the electricity from the wind farm to the city. Wind resource development may compete with other uses for the land and those alternative uses may be more highly valued than electricity generation. Although wind power plants have relatively little impact on the environment compared to other conventional power plants, there is some concern over the noise produced by the rotor blades, aesthetic (visual) impacts, and sometimes birds have been killed by flying into the rotors. Most of these problems have been resolved or greatly reduced through technological development or by properly siting wind plants.
  • anonymous on 02 Oct 13
     
    Most quality online stores. Know whether you are a trusted online retailer in the world. Whatever we can buy very good quality. and do not hesitate. Everything is very high quality. Including clothes, accessories, bags, cups. Highly recommended. This is one of the trusted online store in the world. View now www.retrostyler.com
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

Fuel Cells - Electrochemical Power - 1 views

www.fuelcell.no/applications_mobile_eng.htm

fuel cells history cost

shared by dpurdy on 03 Nov 11 - No Cached
  • One of the first applications for fuel cells based on their advantageous properties was in the US space program.
  • Compared to IC engines, fuel cells have practically no polluting exhaust like NOx and sulphides.
  • It is generally acknowledged that the feasibility and durability of fuel cells in automobiles has been proven. The major focus now is on cost reduction
  • anonymous on 02 Oct 13
     
    Most quality online stores. Know whether you are a trusted online retailer in the world. Whatever we can buy very good quality. and do not hesitate. Everything is very high quality. Including clothes, accessories, bags, cups. Highly recommended. This is one of the trusted online store in the world. View now www.retrostyler.com
dpurdy

Fuel Cells - Electrochemical Power - 0 views

www.fuelcell.no/principle_history_eng.htm

history

shared by dpurdy on 03 Nov 11 - No Cached
  • The best known early fuel cell experiments were performed in 1842 by the British physicist and lawyer, Sir William R. Grove (1811-1896)
  • Due to easily accessible and large amounts of oil and the invention of the combustion engine (Carl Friedrich Benz and Gottlieb Daimler), fuel cells were forgotten until the middle of the 20th century. In the US Apollo space programme, fuel cells exhibited their first renaissance in the 1960’s. 
  • Fuel cell development has been slowed down by a fear of hydrogen as a fuel. It is commonly believed that hydrogen is an extremely explosive and dangerous gas. Most of this belief was founded in 1937, when the hydrogen-filled zeppelin “Hindenburg” caught fire and crashed in Lakehurst, USA.
  • anonymous on 02 Oct 13
     
    Most quality online stores. Know whether you are a trusted online retailer in the world. Whatever we can buy very good quality. and do not hesitate. Everything is very high quality. Including clothes, accessories, bags, cups. Highly recommended. This is one of the trusted online store in the world. View now www.retrostyler.com
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