RenewableUK counts 18,465 full-time direct jobs in wind, wave and tidal power and 15,908 indirect jobs
Solar power | Environment | The Guardian - 0 views
DOE - Fossil Energy: How Fossil Fuels Were Formed - 1 views
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They were formed from prehistoric plants and animals that lived hundreds of millions of years ago.
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Some coal deposits, however, were formed from freshwater swamps which had very little sulfur in them. These coal deposits, located largely in the western part of the United States, have much less sulfur in them
Facts About Fossil Fuel Pollution - 0 views
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pollution spewing from a typical coal plant
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3,700,000 tons of carbon dioxide (CO2), the primary human cause of global warming--as much CO2 as cutting down 161 million trees.
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sulphur dioxide (SO2), which causes acid rain
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What Causes Ocean Waves? - EnchantedLearning.com - 0 views
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The winds cause waves on the surface of the ocean (and on lakes). The wind transfers some of its energy to the water, through friction between the air molecules and the water molecules. Stronger winds (like storm surges) cause larger waves.
Top 10 Sources for Biofuel : Discovery News - 0 views
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Organic matter is one such source. Materials like corn and soybeans have oil extracts that can be converted to ethanol or biodiesel
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more sustainable than petroleum, meaning they can be regrown and remain productive with less negative impact on our ecosystem.
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Some biofuels that provide more long-term benefits may prove too expensive to pursue
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The Energy Story - Chapter 14: Ocean Energy - 0 views
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Tidal energy has been used since about the 11th Century, when small dams were built along ocean estuaries and small streams. the tidal water behind these dams was used to turn water wheels to mill grains.
Pelamis Wave Power - 0 views
Pelamis Wave Power - 0 views
Tidal Power - Generating electricity from tidal currents - 1 views
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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.
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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.
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It will generate one of the most environmentally-friendly forms of energy - it makes no noise
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This is how tidal energy is converted into useful form of power.
What are Biofuels? - 0 views
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Biofuels are liquid fuels which have been derived from other materials such as waste plant and animal matter. There are two main types of biofuels – bioethanol and biodiesel. Bioethanol is used as a replacement for gasoline and biodiesel is used as a replacement for diesel.
Why does the moon's gravity cause tides on earth but the sun's gravity doesn't? | Scien... - 0 views
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The ocean tides on earth are caused by both the moon’s gravity and the sun’s gravity.
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the ocean tides we experience on earth are caused by the sum of the moon’s gravitational gradient and the sun’s gravitational gradient.
Aquamarine Power - Why wave power? The potential to capture clean sustainable energy fr... - 2 views
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Ocean waves are generated by wind passing over the surface of the sea - a process which often begins many hundreds or thousands of miles from shore.
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"Ocean waves represent our planet's last untapped natural renewable energy resource. Over 70 per cent of the earth's surface is covered with water. The energy contained within waves has the potential to produce up to 80,000TWh of electricity per year - sufficient to meet our global energy demand five times over. The potential to capture energy from the sea offers a vast and endless source of clean sustainable electricity."
Fuel cell - Simple English Wikipedia, the free encyclopedia - 0 views
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t has to be produced first, and if this is done by burning fossil fuels, it does not help against climate change. But, the hydrogen fuel cell will help against climate change in future, because scientists are trying to find new ways to make hydrogen without using fossil fuels.
Biofuel Facts - 0 views
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Much of the gasoline in the United States is blended with a biofuel—ethanol. This is the same stuff as in alcoholic drinks, except that it's made from corn that has been heavily processed. There are various ways of making biofuels, but they generally use chemical reactions, fermentation, and heat to break down the starches, sugars, and other molecules in plants. The leftover products are then refined to produce a fuel that cars can use.
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On the face of it, biofuels look like a great solution. Cars are a major source of atmospheric carbon dioxide, the main greenhouse gas that causes global warming. But since plants absorb carbon dioxide as they grow, crops grown for biofuels should suck up about as much carbon dioxide as comes out of the tailpipes of cars that burn these fuels. And unlike underground oil reserves, biofuels are a renewable resource since we can always grow more crops to turn into fuel.
Cheap fuel cells real soon? - Democratic Underground - 0 views
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Scientists have come up with a more efficient way to split ocean water and turn it into sustainable, clean hydrogen fuel. They created a flexible plastic film that acts as the catalyst to begin splitting ocean water, without requiring the high energy input that current methods need.
Science of Summer: How Do Ocean Waves Form? | LiveScience - 0 views
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Presnell explained that wind speed and duration help in determining the size and frequency of ocean waves. Another factor is called "fetch," referring to the span of water over which a breeze blows, and the longer a fetch, the more energy a wave can build up.
Historical Overview - 0 views
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90 years ago - in 1921 Albert Einstein was awarded a Nobel Prize for explanation of the PV-effect. 70 years ago - in 1941, the first silicon monocrystalline solar cell was constructed. 60 years ago - in 1951, the first germanium solar cells have been made.
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1958, the same company introduced a solar cell with 9 % efficiency. The first radiation-proof silicon solar cell was produced for the purposes of space technology in the same year. On 17th March, the first satellite powered by solar cells, Vanguard I, was launched. The system ran continuously for 8 years.
Energy Basics: Photovoltaics - 1 views
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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.
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"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."
Getting More from Wind Turbines with Condition Monitoring Systems - 0 views
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Another benefit of condition monitoring is that it allows condition-based maintenance. Instead of replacing components after fixed time intervals based on empirical values, they can be replaced only when required, such as when signs of wear are detected.
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