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leonardsar99

How Much Power Does a Solar Panel Generate? | eHow.com - 0 views

www.ehow.com/ower-solar-panel-generate.html

solar current

shared by leonardsar99 on 12 Mar 13 - No Cached
  • leonardsar99 on 12 Mar 13
     
    "Solar panels produce electric power according to their size, efficiency and how much sunlight they receive. For homeowners and small businesses, roof-mounted panels are a typical option. Solar panels rated at 100 to 200 watts cover about 10 square feet (1 square meter). The power you get from a 100-watt solar panel depends on how much sunlight it receives, and on a daily basis the total power is much less than the rated wattage"
cheniermab99

Wind Energy: Facts - 0 views

www.mass.gov/...wind-energy-facts.html

wind co2

shared by cheniermab99 on 12 Mar 13 - No Cached
  • 1 MW of wind energy can offset approximately 2,600 tons Waste heat recovery  file size 4MB of carbon dioxide annually.
  • 29,440 Megawatts (MW) of wind energy are currently installed in the United States, and an additional 5,866 MW are under construction.Over 8,500 MW were installed in the US in 2008 (just beating out China with 6,300 MW). This represents: 50 percent increase from 200742 percent of all new generating capacity installed in 2008$17 billion investment44 million tons of carbon emissions avoided (equivalent of 7 million cars)35,000 new jobs
cheniermab99

Wind Turbines for Electricity - 1 views

zfacts.com/244

wind co2 cost

shared by cheniermab99 on 12 Mar 13 - No Cached
  • In 2006, wind power supplied 0.6% of US electricity but reduced CO2 emission from electricity production by a full 1%.
  • What really matters is the cost to society. With current subsidy methods, it costs around 3¢/kWh
  •   One-Time Cost per kW Capacity (usage) Factor Fixed Cost per kWh Variable Cost per kWh Total Cost per kWh Gas Turbine $439 15% 5.2¢ 8.7¢ 13.9¢ Coal $1,338 90% 2.7¢ 1.9¢ 4.5¢ Nuclear $2,180 90% 4.3¢ 0.3¢ 4.6¢ Wind $1,254* 30% 7.5¢ 0.0¢ 7.5¢
  • ...1 more annotation...
  • as coal is the worst source of CO2. Thirty years from now, wind power might be cutting global GHG emissions by 10%.
berubejos99

Eia report solar - 2 views

solar current

started by berubejos99 on 15 Mar 13 no follow-up yet
dylan purner

Energy Basics: Photovoltaics - 1 views

www.eere.energy.gov/...photovoltaics.html

solar history

shared by dylan purner on 08 Mar 13 - No Cached
  • First used in about 1890, "photovoltaic" has two parts: photo, derived from the Greek word for light, and volt, relating to electricity pioneer Alessandro Volta. And this is what photovoltaic materials and devices do—they convert light energy into electrical energy, as French physicist Edmond Becquerel discovered as early as 1839.
  • kenyonlau99 on 08 Mar 13
     
    "First used in about 1890, "photovoltaic" has two parts: photo, derived from the Greek word for light, and volt, relating to electricity pioneer Alessandro Volta. And this is what photovoltaic materials and devices do-they convert light energy into electrical energy, as French physicist Edmond Becquerel discovered as early as 1839. Becquerel discovered the process of using sunlight to produce an electric current in a solid material. But it took more than another century to truly understand this process. Scientists eventually learned that the photoelectric or photovoltaic effect caused certain materials to convert light energy into electrical energy at the atomic level. PV systems are already an important part of our daily lives. Simple PV systems provide power for small consumer items such as calculators and wristwatches. More complicated systems provide power for communications satellites, water pumps, and the lights, appliances, and machines in some homes and workplaces. Many road and traffic signs also are now powered by PV. In many cases, PV power is the least expensive form of electricity for these tasks."
whalenkil98

How much of the world's energy does the United States use? - FAQ - U.S. Energy Informat... - 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
freedenjoh99

Fuel Cell Vehicles - 0 views

www.consumerenergycenter.org/...index.html

fuel cell form

shared by freedenjoh99 on 11 Mar 13 - Cached
  • Currently, most hydrogen is made from natural gas through a process known as reforming. Reforming separates hydrogen from hydrocarbons by adding heat. Hydrogen can also be produced from a variety of sources including water and biomass.
kramerjac99

The Physics of Tidal Energy - NYTimes.com - 0 views

green.blogs.nytimes.com/...the-physics-of-tidal-energy

tidal energy

shared by kramerjac99 on 11 Mar 13 - No Cached
  • a tidal energy project is moving ahead in Maine, with high costs but high hopes too. But the 180-kilowatt unit that the Ocean Renewable Power Company hopes to put under water next week is really just a first step. The big question is, how well will it withstand the force of the rushing water?
  • The region, the Bay of Fundy, is famous for strong tides, but the company has picked a spot called Cobscook Bay, where the current is relatively slow, an average of 5.8 knots, or 6.7 miles an hour. That is the speed at which the hardware will produce 180 kilowatts.
  • kramerjac99 on 11 Mar 13
     
    How it works, how fast the waves are
greenhan99

The Biofuels FAQs: The Facts About Biofuels: Ethanol - 0 views

www.energyfuturecoalition.org/...fact_ethanol.htm

biofuel current

shared by greenhan99 on 11 Mar 13 - No Cached
  • Biodiesel consumption was much lower, about 250 million gallons in 2006
  • which requires an annual increase in biofuels use to 7.5 billion gallons by 2012.
murphymat98

Tidal Power - 1 views

www.global-greenhouse-warming.com/tidal.html

tide form sustainable

shared by murphymat98 on 11 Mar 13 - No Cached
  • Tidal power is a means of electricity generation achieved by capturing the energy contained in moving water mass due to tides. Two types of energy can be extracted: kinetic energy of currents between ebbing and surging, and potential energy from the difference in height (or head) between high and low water marks.
  • Tidal power schemes do not produce energy 24 hours a day. A conventional design, in any mode of operation, would produce power for 6 to 12 hours in every 24 and will not produce power at other times
warneraus98

Tidal power - Wikipedia, the free encyclopedia - 0 views

en.wikipedia.org/...Tidal_energy

tide sustainable

shared by warneraus98 on 11 Mar 13 - Cached
  • idal power is taken from the Earth's oceanic tides; tidal forces are periodic variations in gravitational attraction exerted by celestial bodies. These forces create corresponding motions or currents in the world's oceans
  • Because the Earth's tides are ultimately due to gravitational interaction with the Moon and Sun and the Earth's rotation, tidal power is practically inexhaustible and classified as a renewable energy resource
  • Because the Earth's tides are ultimately due to gravitational interaction with the Moon and Sun and the Earth's rotation, tidal power is practically inexhaustible and classified as a renewable energy resource
  • warneraus98 on 11 Mar 13
     
    ware tide energy comes from     
rascoekat00

Tidal Power - Generating electricity from tidal currents - 1 views

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

tide energy

shared by rascoekat00 on 11 Mar 13 - No Cached
  • Tidal energy is produced through the use of tidal energy generators. These large underwater turbines are placed in areas with high tidal movements, and are designed to capture the kinetic motion of the ebbing and surging of ocean tides in order to produce electricity. Tidal power has great potential for future power and electricity generation because of the massive size of the oceans. These articles explore the potential energy of tidal power technologies.
  • We can use slow moving ocean and river waves for a new, reliable and affordable alternative energy source. A University of Michigan engineer has developed a device that acts like a fish that turns the potentially destructive vibrations in water into clean, renewable energy.
  • It will generate one of the most environmentally-friendly forms of energy - it makes no noise
  • ...2 more annotations...
  • "But if we could harness 0.1 percent of the energy in the ocean, we could support the energy needs of 15 billion people
  • Tidal energy is produced through the use of tidal energy generators. These large underwater turbines are placed in areas with high tidal movements
  • Xin Wang on 11 Mar 13
     
    This is how tidal energy is converted into useful form of power. 
leonardsar99

The Energy Story - Chapter 15: Solar Energy - 1 views

www.energyquest.ca.gov/...chapter15.html

solar convert

shared by leonardsar99 on 11 Mar 13 - Cached
  • We have always used the energy of the sun as far back as humans have existed on this planet. As far back as 5,000 years ago, people "worshipped" the sun. Ra, the sun-god, who was considered the first king of Egypt.
  • We have always used the energy of the sun as far back as humans have existed on this planet. As far back as 5,000 years ago, people "worshipped" the sun.
  • Ra, the sun-god, who was considered the first king of Egypt
  • ...1 more annotation...
  • When sunlight strikes the solar cell, electrons (red circles) are knocked loose. They move toward the treated front surface (dark blue color). An electron imbalance is created between the front and back. When the two surfaces are joined by a connector, like a wire, a current of electricity occurs between the negative and positive sides. These individual solar cells are arranged together in a PV module and the modules are grouped together in an array. Some of the arrays are set on special tracking devices to follow sunlight all day long.
  • butlerlex99 on 11 Mar 13
     
    the sun
kenyonlau99

How much power is generated in the United States by solar power? - 2 views

solar.calfinder.com/...how-much-power-2

current solar energy

shared by kenyonlau99 on 11 Mar 13 - No Cached
  • just over 843,000 kilowatt-hours of electricity were provided by solar power. The vast majority of that, more than 666,500 kWh, were produced in California. Roughly 14 percent of the total renewable energy generated in the U.S. in 2008 was solar energy. And remember that these numbers continue to grow each year. The solar industry has been growing on an average of 30-40 percent each year, and as the industry grows, so will the amount of clean, renewable power it puts out. Interested in Home Solar Energy? Fill in your details below and certified solar contractors will give you FREE estimates. What type of Solar Energy services are you interested in? * Please Select Solar Electrical Solar Thermal First Name * Last Name * Zipcode *
    • kenyonlau99
      kenyonlau99 on 13 Mar 13
       
      GOOD INFO!
  • The EIA states that just over 843,000 kilowatt-hours of electricity were provided by solar power. The vast majority of that, more than 666,500 kWh, were produced in California. Roughly 14 percent of the total renewable energy generated in the U.S. in 2008 was solar energy. And remember that these numbers continue to grow each year. The solar industry has been growing on an average of 30-40 percent each year, and as the industry grows, so will the amount of clean, renewable power it puts out.
  • whalenkil98 on 11 Mar 13
     
    how much solar energy is being converted in the USA?
  • kenyonlau99 on 13 Mar 13
     
    "How much power is generated in the United States by solar power? ted-vollgraff According to the Energy Information Administration (EIA), renewable energy accounted for 7 percent of U.S. energy consumption in 2008. Solar power accounted for only one percent. But, considering how much energy is consumed each year in the United States, that is still a decent bit of power. The EIA states that just over 843,000 kilowatt-hours of electricity were provided by solar power. The vast majority of that, more than 666,500 kWh, were produced in California. Roughly 14 percent of the total renewable energy generated in the U.S. in 2008 was solar energy. And remember that these numbers continue to grow each year. The solar industry has been growing on an average of 30-40 percent each year, and as the industry grows, so will the amount of clean, renewable power it puts out. "
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."
rainwateremi99

HowStuffWorks "Biofuels vs. Fossil Fuels" - 0 views

auto.howstuffworks.com/...biofuel-fossil-fuel1.htm

biofuel

shared by rainwateremi99 on 11 Mar 13 - No Cached
  • The U.S. currently produces 9.2 billion gallons of ethanol a year and consumes 9.6 billion gallons.
lefebvrekat99

biofuel - Dpurdy on Diigo - 0 views

www.diigo.com/...biofuel

current biofuels

shared by lefebvrekat99 on 22 Mar 13 - No Cached
  • First generation biofuel are those fuel derived from vegetable or animal fats/oils, starch or sugar with the use of modern technology. 1. Let the base organic material (corn, sugarcane, wheat, etc) pass through a grinding meal to pulverize the selected material. 2. Then, liquefy it by placing the blend of water, grain powder and an enzyme that facilitates the breakdown of the grain compound into a high-heat cooker. 3. Cool it afterwards. Add another enzyme that will facilitate the conversion of starch into sugars which are then fermented, producing alcohol from the cooled mash. 4. Start the fermentation by adding yeast to the sugar mixture. The sugars will be broken down to ethanol (a form of alcohol) and carbon dioxide. 5. Distill the fermented mixture in order for the ethanol to separate from the solids. 6. Get rid of the water from the separated ethanol through a dehydration process.
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