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westkea00

Pelamis Wave Power - 0 views

www.pelamiswave.com/development-history

shared by westkea00 on 25 Sep 13 - No Cached
  • Since 1998, the Pelamis development programme has covered all aspects of the design from the fundamental concept refinement through to accelerated cycle testing of individual components for reliability.
  • During the first phase of Pelamis development prior to full-scale operations in 2004, extensive numerical modelling and analysis and a range of technology demonstration models at different scales were used to understand survival characteristics in extreme waves and verify the accuracy of our simulations
justice colvin

Converting Wind Energy into Electricity - 0 views

www.envirocitizen.org/...1056.html

convert wind electricity

shared by justice colvin on 24 Sep 13 - No Cached
  •  The process of converting wind energy to electric energy uses a wind turbine. The wind turbines convert the kinetic energy in the wind into mechanical power. The mechanical power can be used for many things. in the past this meant pumping water, creating ventilation, or grinding food sources. While these things still occur, wind power is also used to generate electricity.      The wind turbine is a tall shaft with several horizontal rectangular blades attached to it. These blades are often covered with stiff material or ratting material. When turned they push against the air, causing pressure, and turning the inner shaft. This shaft connects to a generator which then creates energy.
dylan purner

Sun - Wikipedia, the free encyclopedia - 0 views

en.wikipedia.org/...Sun

solar fossil fuels form

shared by dylan purner on 24 Sep 13 - No Cached
  • Sunlight is Earth's primary source of energy.
  • The energy stored in petroleum and other fossil fuels was originally converted from sunlight by photosynthesis in the distant past.[119]
hertznerkar00

What is U.S. electricity generation by energy source? - FAQ - U.S. Energy Information AdmInistration (EIA) - 1 views

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

wind current

shared by hertznerkar00 on 25 Sep 13 - No Cached
  • What is U.S. electricity generation by energy source? In 2012, the United States generated about 4,054 billion kilowatthours of electricity.  About 68% of the electricity generated was from fossil fuel (coal, natural gas, and petroleum), with 37% attributed from coal. Energy sources and percent share of  total electricity generation In 2012 were:  Coal 37% Natural Gas 30% Nuclear 19% Hydropower 7% Other Renewable 5% Biomass 1.42% Geothermal 0.41% Solar 0.11% WInd 3.46% Petroleum 1% Other Gases < 1%
schmettererdav00

A brief history of biofuels: from ancient history to today - 0 views

www.biofuelnet.ca/...-from-ancient-history-to-today

biofuel history

shared by schmettererdav00 on 04 Oct 13 - No Cached
  • Biofuels and bioenergy are as old as civilization itself.  Solid biofuels like wood, dung and charcoal have been used ever since man discovered fire, and are still used today for cooking and heating in many communities in developing countries.
  • anonymous on 05 Oct 13
     
    today hindi news,today news talmi,hindi news www.killdo.de.gg
schmettererdav00

How Biomass Energy Works | Union of Concerned Scientists - 0 views

www.ucsusa.org/...how-biomass-energy-works.html

biofuel current

shared by schmettererdav00 on 05 Oct 13 - No Cached
  • schmettererdav00 on 05 Oct 13
     
    In the United States, we already get over 50 billion kilowatt-hours of electricity from biomass, providIng nearly 1.5 percent of our nation's total electric sales.
charlesjos00

Photovoltaic Cells - 0 views

www.energyeducation.tx.gov/...c.html

picture solar photovoltaic

shared by charlesjos00 on 03 Oct 13 - No Cached
  • Photovoltaic cells are made of at least two layers of semiconducting material. The first layer has a positive charge; the next layer has a negative charge. When sunlight strikes the cell, the semiconducting material absorbs photons from the light. This process frees electrons from the negative layer, which move to the positive layer. This flow of electrons constitutes an electric current, which can be captured in a circuit connecting the two layers. The electricity generated by a photovoltaic cell can be used directly, stored in batteries or sold back to a utility company.
  • blackmerbru98 on 03 Oct 13
     
    yes but they will if you get enough of them they will outlast the fossil fuels but as this all burns out it can work as we will also by finding new planets we could find more and more fuels i expect this would . happen within a few decades of our time. as this might happen we could probably be able to live on other planets by then so when the sun actuly goes out we will be prepared
sokolkyl00

Despite bright potential, solar power struggles to stay 'clean' | Global Ideas | DW.DE | 04.06.2013 - 0 views

www.dw.de/...a-16858170

solar pollution

shared by sokolkyl00 on 04 Oct 13 - No Cached
  • If solar panels are manufactured using electricity from coal-burning plants, they indirectly emit greenhouse gas emissions. That makes them less clean than a panel that’s manufactured using renewable energy.
  • hexafluoride
  • sokolkyl00 on 04 Oct 13
     
    What's worse, harmful chemicals are increasingly used to manufacture solar cells in certain panels. Previously, one such chemical widely used was sulfurhexafluoride (SF6), a substance 22,800 times more dangerous to the environment than CO2
  • anonymous on 05 Oct 13
     
    today hindi news,today news talmi,hindi news www.killdo.de.gg
zahroofvalves

Zahroof Valves, Inc. - ReciprocatIng Compressor Valves Manufacturer - 1 views

www.zahroofvalves.com

StraightFlo valve reciprocating compressor valves manufacturer

shared by zahroofvalves on 19 Sep 17 - No Cached
  • zahroofvalves on 19 Sep 17
     
    Zahroof Valves, Inc. (ZVI) is an Innovative company, with its headquarters In Houston, Texas, that has developed and now markets the revolutionary StraightFlo valve for use In reciprocatIng gas compressors.
ackleysam99

The Disadvantages Of A Solar Generator | LIVESTRONG.COM - 1 views

www.livestrong.com/...dvantages-of-a-solar-generator

cost

shared by ackleysam99 on 22 Oct 12 - No Cached
  • Solar power generators offer a no-emission alternative to ones that use fossil fuel. These generators come in small, portable sizes for temporary power or larger arrays for permanent energy production.
  • availability of sunlight given local weather conditions and the resilience of the photovoltaic cells when purchasing a solar generator.
  • Most photovoltaic cells rely on silicon crystals to generate power. Demand for silicon has driven its price higher, meaning a solar generator can require a sizable initial investment. in fact, SolarBuzz notes that 45 percent of solar cell cost comes from the silicon wafer. Typical 2 kilowatt solar generators cost from $16,000 to $20,000.
  • ...2 more annotations...
  • Solar generators powerful enough to supply electricity for a whole home also require a lot of space, with roof-mounted panels needing at least 50 square feet and possibly as much as
  • 1,000 square feet. Lack of Durability
dpurdy

Geothermal Energy and the Environment - Energy Explained, Your Guide To Understanding Energy - Energy information Administration - 1 views

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

geothermal pollution

shared by dpurdy on 11 Nov 12 - No Cached
  • eothermal power plants do not burn fuel to generate electricity, so their emission levels are very low. They release less than 1% of the carbon dioxide emissions of a fossil fuel plant. Geothermal plants use scrubber systems to clean the air of hydrogen sulfide that is naturally found in the steam and hot water.
  • Geothermal plants emit 97% less acid rain-causing sulfur compounds than are emitted by fossil fuel plants. After the steam and water from a geothermal reservoir have been used, they are injected back into the Earth.
dpurdy

Use of Geothermal Energy - Energy Explained, Your Guide To Understanding Energy - Energy information Administration - 0 views

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

geothermal current

shared by dpurdy on 11 Nov 12 - No Cached
  • In 2011, U.S. geothermal power plants produced about 17 billion kilowatt-hours (kWh), or 0.4% of total U.S. electricity generation.
dpurdy

Wind - Energy Explained, Your Guide To Understanding Energy - Energy information Administration - 1 views

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

wind form sustainable

shared by dpurdy on 11 Nov 12 - No Cached
  • Wind is simply air in motion. It is caused by the uneven heating of the Earth's surface by the sun. Because the Earth's surface is made of very different types of land and water, it absorbs the sun's heat at different rates.
  • Wind is a renewable energy source because the wind will blow as long as the sun shines.
dpurdy

How many Gigawatts sp of Electricity does the United States use each day? | ChaCha - 0 views

www.chacha.com/...the-united-states-use-each-day

electricity current

shared by dpurdy on 11 Nov 12 - No Cached
  • 3,816,000 Gigawatts of Electricity is used in the United states each year
  • dpurdy on 11 Nov 12
     
    "3,816,000 "
coreyemi99

How is solar energy converted into electrical energy - 0 views

wiki.answers.com/...nverted_into_electrical_energy

convert

shared by coreyemi99 on 13 Mar 13 - No Cached
kenyonlau99 liked it
  • Solar energy is very easyto change to electric energy. All you have to do is to take a solar cell. Put it in sunlight or other such source of light. It will use this light energy and will convert it into electric energy.
  • coreyemi99 on 13 Mar 13
     
    how solar energy is converted into electricity
kennedyeri98

Climate Change: Evidence - 0 views

climate.nasa.gov/evidence

Climate climate change solar

shared by kennedyeri98 on 13 Mar 13 - No Cached
  • evidence that atmospheric CO2 has increased since the industrial Revolution.
  • been seven cycles of glacial advance and retreat, with the abrupt end of the last ice age about 7,000 years ago
  • proceeding at a rate that is unprecedented in the past 1,300 years.1
charlesjos00

How Long Has Solar Power Been Around? | eHow - 1 views

www.ehow.com/_long-solar-power-around_.html

solar history

shared by charlesjos00 on 13 Mar 13 - No Cached
  • August Mouchout is credited with the creation of the first active solar motor. In 1861, he developed a steam engIne fueled completely by the sun.
  • kenyonlau99 on 13 Mar 13
     
    "Ever since ancient Romans installed glass and mica around their southern-facing door entrances, people have been finding ways to harness the power of the sun. From those origins, solar energy has slowly progressed into a viable source for powering your home. Other People Are Reading"
kennedyeri98

Inverter Noise Emissions from a solar PV application - 2 views

www.civicsolar.com/...Inverter-Noise-Emissions

solar convert noise

shared by kennedyeri98 on 14 Mar 13 - No Cached
  • Electrical interference is a problem that might be encountered with solar power system electronics
  • produces at least some noise and nearly all equipment now used in PV systems is digital.
  • digital electronic
  • ...2 more annotations...
  • charge controllers and many inverters (particularly modified sine wave inverters)
  • high power digital pulses are one of the worst interference sources.
hardingmar00

Electricity from Geothermal Energy - 1 views

www.powerscorecard.org/tech_detail.cfm

convert geothermal

shared by hardingmar00 on 14 Mar 13 - No Cached
  • The heat from the earth's own molten core can be converted into electricity. This core consists primarily of extremely high temperature liquid rock known as magma. This "geothermal" heat circulates within the rock or is transferred to underground reservoirs of water, which also circulate under the earth's crust. Because of the near limitless ability of the earth to produce magma, and the continuous transfer of heat between subsurface rock and water, geothermal energy is considered a renewable resource.
  • faglejoh98 on 14 Mar 13
     
    "The heat from the earth's own molten core can be converted into electricity. This core consists primarily of extremely high temperature liquid rock known as magma. This "geothermal" heat circulates within the rock or is transferred to underground reservoirs of water, which also circulate under the earth's crust. Because of the near limitless ability of the earth to produce magma, and the continuous transfer of heat between subsurface rock and water, geothermal energy is considered a renewable resource. Geothermal resources have been harnessed as an energy source since the dawn of civilization, when natural hot springs were first used for cooking and bathing. The geothermal resources tapped to generate electricity are far more intense than those used for space heating and can reside as deep as 10,000 feet below the earth's surface. Capital costs for the construction of geothermal power plants are much higher than for large coal-fired plants or new natural gas turbine technologies. But geothermal plants have reasonable operation and maintenance costs and no fuel costs. Though more expensive than wind power in most cases, new geothermal electricity generation facilities are increasingly competitive with fossil options."
boothreb99

Group items matching "fuel cell" in title, tags, annotations or url - qmstech2 | Diigo Groups - 1 views

groups.diigo.com/...search

fuel cell fuel cell current

shared by boothreb99 on 11 Mar 13 - No Cached
  • boothreb99 on 11 Mar 13
     
    "The fuel cell is being considered as an eventual replacement for the internal combustion engine for cars, trucks and buses. Major car manufacturers have teamed up with fuel cell research centers or are doing their own development. There are plans for mass-producing cars running on fuel cells. Because of the low operating cost of the combustion engine, and some unresolved technical challenges of the fuel cell, however, experts predict that a large scale implementation of the fuel cell to power cars will not occur before 2015, or even 2020."
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