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filionmar99

Group items matching "change future" in title, tags, annotations or url - qmstech2 | Di... - 0 views

  • We are working to produce biofuels that are low cost, low carbon, sustainable and able to fulfil the world’s transportation fuel needs on a large scale without compromising food production
giumarraant99

NREL: Hydrogen and Fuel Cells Research - Renewable Electrolysis - 0 views

  • Renewable electrolysis is a process that uses renewable electricity to produce hydrogen by passing an electrical current through water. Renewable energy sources such as photovoltaics, wind, biomass, hydropower, and geothermal can provide clean, sustainable electricity for our nation
  • Wind turbines can be used to produce hydrogen through a process called renewable electrolysis.
hughesacam99

Wave Energy Pros and Cons - Energy Informative - 0 views

  • Harnessing wave energy comes without the emission of harmful green house gases. This is the main motivation factor behind further development of this way of power generation.
  • Like with most green energy sources, wave power is also renewable. Since this energy source ultimately comes from the heat energy that is emitted from the sun, it will not disappear for some time – in fact, several billion years or as long time it takes for the sun to burn out.
  • The energy density is typically around 30-40 kW for every meter (2.2 feet) of wave along the shore. As we go further into the ocean 100kW for every meter is not uncommon.
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  • Waves are hardly interrupted and almost always in motion.
  • This makes generating electricity from wave energy a reasonable reliable energy source
  • It should be mentioned that the amount of energy that is being transported through waves does vary every year and from season to season. On the northern hemisphere, the average value of November and May could be different with a factor of two or more.
smithjul98

Biodiesel Fuel Uses - 0 views

  • There already many biodiesel fuel uses, and as technology continues to develop, so do the opportunities to replace traditional fossil fuels with this viable alternative.
dynesbri97

How does wind form - 0 views

  • All winds are caused by differences in air pressure, which are usually caused by the sun. When high air pressure flow into low air pressure, it creates wind.Our planet turns around the Sun on an axis with a 23 degree tilt towards the North Star. The difference of heating on the surface of the Earth (between the equator and the pole) causes a mass of hot air to go up and to displace colder air toward the bottom - this all causes movement in the mass of air that is contain in our atmosphere.
bureaumar98

Global Biofuel Production Forecast 2015-2020 | Market Research Media - 0 views

  • The past decade has seen soaring oil prices, Middle East turmoil, government biofuel incentives, cleantech venture investments and maturing technologies, all these factors contributing to the critical mass necessary to launch the biofuel market, once and forever.
gillinghammic98

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

  • By the time it reaches Earth's surface, the energy in sunlight has fallen to about 1,000 watts per square meter at noon on a cloudless day. Averaged over the entire surface of the planet, 24 hours per day for a year, each square meter collects the approximate energy equivalent of almost a barrel of oil each year, or 4.2 kilowatt-hours of energy every day. Deserts, with very dry air and little cloud cover, receive the most sun—more than six kilowatt-hours per day per square meter. Northern climates, such as Boston, get closer to 3.6 kilowatt-hours. Sunlight varies by season as well, with some areas receiving very little sunshine in the winter. Seattle in December, for example, gets only about 0.7 kilowatt-hours per day. It should also be noted that these figures represent the maximum available solar energy that can be captured and used, but solar collectors capture only a portion of this, depending on their efficiency. For example, a one square meter solar electric panel with an efficiency of 15 percent would produce about one kilowatt-hour of electricity per day in Arizona.
tillmanash98

Biofuel potential is bleak - 3 views

  • 12.48 billion gal of ethanol
  • The 2004 US corn crop totaled about 11.7 billion bushels,
  • The entire 2004 US corn and soybean crop, converted to biomass fuels, could replace about 10.41 billion gal of petroleum (7.6 billion as ethanol and 2.81 billion as biodiesel).
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  • The US consumed about 7.49 billion bbl of petroleum last year,
  • This means that the total biofuel potential of the record 2004 US corn and soybean harvests would offset about 12 days of US petroleum consumption, or about 3.3% of our total yearly petroleum consumption
  • Given that most of the US corn and soybean crop is already committed to other uses, this analysis indicates that biomass-based fuels will have a negligible role in reducing US petroleum consumption, which in turn underscores that replacing petroleum in the US economy will be a monumental challenge.
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    The 2004 US corn crop totaled about 11.7 billion bushels, the largest ever
dpurdy

Hydrogen Fuel Cells | INTUITECH - Intuitive Technologies - 1 views

  • Thirty-eight nationally recognized companies in the United States, including eleven Fortune 500 corporations, are collectively saving millions of dollars in electricity costs while reducing carbon emissions by tens of thousands of tons per year by using fuel cells, according to a new report by Fuel Cells 2000, a non-profit education and outreach organization. 
dpurdy

Current Fuel Cell Usage - 2 views

  • Once the costs of production go down, there will be a revolution in the Energy Production Energy, and other industries that act in response such as the Automative Industry. This is because fuels cells are immensely appealing to the populace; with benefits such as no real emmissions, higher efficiency, etc...
shannonlan97

Disadvantages of Wind Energy - Don't Get Blown Away by All The Positives of Wind - 2 views

  • 3.Wind Turbines Interfere with Television Reception.
  • Some of these blades can have a span of 100 or more feet.
  • birds easily fly into the blade path and get killed.
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  • get about a hundred of these "bad boys" cranking out a few hundred RPM's and you might have the sound of an alien attack.
  • If you do live along the coast, your personal property is rather expensive and you might not be able to afford the opportunity to afford the land, let alone a wind generator.
efana1

Wind turbines and migratory birds: A serious problem? - 0 views

  • Wind turbines are responsible for the deaths of between 10,000 and 40,000 birds each year, according to the American Bird Conservancy.
  • the Altamont Pass site kills the largest number of birds - about 4,700 each year
  • The American Wind Energy Association contends wind turbines are far less lethal to birds than other man-made structures, such as windows (responsible for more than 100 million deaths each year in the U.S.) and power lines (between 130 million and 174 million), or than cats, which remain the number one bird killer.
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  • bat deaths associated with turbines were three times that of the rate of birds, especially during their migratory season
buttlingzac97

About Wind Energy: Benefits of Wind - 3 views

  • Wind energy releases no pollution into the air or water, and does not contribute to global warming
  • "on average, each MWh of electricity generated in the U.S. results in the emission of 1,341 pounds of carbon dioxide (CO2)
  • his avoided CO2 equals over 1.8 million tons of carbon, enough to fill 180 trains, each 100 cars long, with each car holding 100 tons of carbon every year."
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  • iversifies the national energy portfolio and reduces America's reliance on imported fuels
ackleysam99

Disadvantages Of Solar Energy - 2 views

  • One of the main disadvantages is the initial cost of the equipment used to harness the suns energy
  • A solar energy installation requires a large area for the system to be efficient in providing a source of electricity
  • pollution can degrade the efficiency of photovoltaic cells. Clouds also provide the same effect, as they can reduce the energy of the suns rays
filionmar99

Biofuel - Wikipedia, the free encyclopedia - 1 views

  • Biodiesel is made from vegetable oils and animal fats. Biodiesel can be used as a fuel for vehicles in its pure form
  • Most transportation fuels are liquids, because vehicles usually require high energy density, as occurs in liquids and solids.
  • First generation biofuels 'First-generation' or conventional biofuels are biofuels made from sugar, starch, and vegetable oil.
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  • Examples include wood, sawdust, grass trimmings, domestic refuse, charcoal, agricultural waste, non-food energy crops, and dried manure.
  • In 2010 worldwide biofuel production reached 105 billion liters (28 billion gallons US), up 17% from 2009, and biofuels provided 2.7% of the world's fuels for road transport, a contribution largely made up of ethanol and biodiesel.[2] Global ethanol fuel production reached 86 billion liters (23 billion gallons US) in 2010, with the United States and Brazil as the world's top producers, accounting together for 90% of global production. The world's largest biodiesel producer is the European Union, accounting for 53% of all biodiesel production in 2010.[2] As of 2011, mandates for blending biofuels exist in 31 countries at the national level and in 29 states/provinces.[3] According to the International Energy Agency, biofuels have the potential to meet more than a quarter of world demand for transportation fuels by 2050.[4]
  • In 2010 worldwide biofuel production reached 105 billion liters (28 billion gallons US), up 17% from 2009,[3] and biofuels provided 2.7% of the world's fuels for road transpor
  • Global ethanol fuel production reached 86 billion liters (23 billion gallons US) in 2010, with the United States and Brazil as the world's top producers, accounting together for 90% of global production.
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    Bioethano
stewartlia99

Wind Turbines Impact - 2 views

  • The most noticeable impact a wind turbine places upon the environment is noise pollution.
  • This is down to the noise, and many people compare the sound output of a wind turbine to a small jet engine.
  • Another disadvantage regarding a wind turbine and it's impact on the surrounding environment can be expressed with the term "visual impact" or "visual pollution".
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  • Some people believe wind turbines actually look quite nice, yet many people disagree.
efana1

Long Island, New York City Offshore Wind Project - 0 views

  • Advantages of Wind Power
  • goal for the State to meet 45 percent of its electricity needs through improved energy efficiency and renewable sources by the year 2015
  • renewable resource that could provide a significant amount of clean energy to consumers
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  • Wind's relative low-energy density
osikatho97

Biofuels, Biodiesel and Ethanol - The New York Times - 0 views

  • In the early days of motorized transport, fuels derived from plants lost out to fuels refined from crude oil
  • first-generation biofuels -- chiefly, ethanol made from corn or sugar cane, or biodiesel made from vegetable oil
  • The source plants absorb carbon dioxide from the air as they are growing, and consequently, the carbon dioxide that is released when biofuels are burned does not represent a net addition of that greenhouse gas to the atmosphere.
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  • second-generation biofuels made from plant wastes
rutaspe99

Hydrogen Power and Fuel Cells - Renewable Energy World - 3 views

  • Hydrogen Energy Hydrogen is the simplest element. An atom of hydrogen consists of only one proton and one electron. It's 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's always combined with other elements. Water, for example, is a combination of hydrogen and oxygen (H2O).
  • Hydrogen Energy Hydrogen is the simplest element. An atom of hydrogen consists of only one proton and one electron. It's 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's always combined with other elements. Water, for example, is a combination of hydrogen and oxygen (H2O). Hy
  • Hydrogen is also found in many organic compounds, notably the hydrocarbons that make up many of our fuels, such as gasoline, natural gas, methanol, and propane.
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    Hydrogen is also found in many organic compounds, notably the hydrocarbons that make up many of our fuels, such as gasoline, natural gas, methanol, and propane.
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    A fuel cell combines hydrogen and oxygen to produce electricity, heat, and water. 
smithree98

Fuel Cell Advantages and Disadvantages - 1 views

  • Conceptually, replacing the current oil-based infrastructure with hydrogen would cost billions, maybe trillions, of dollars. Although abundant in the universe, hydrogen is fairly rare in our atmosphere, meaning that it has to be extracted (for example through electrolysis, as explained above) and currently, the process is cost prohibitive and inefficient. Its production at energy plants creates excessive carbon dioxide. When it burns, a hydrogen flame is virtually invisible; coupled with the gas’s propensity for escaping, in small amounts, almost any tank, there are concerns about explosions. On the plus side, hydrogen is so light it typically is dispersed in the air very quickly. On-board storage is a major issue; a hydrogen tank would currently be too large for a car. It is a very flammable gas (think of the Hindenburg), which further adds to the on-board storage problems.
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    advantages and disadvantages of hydrogen fuel cells
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