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Encyclopedia > Renewable resource

A natural resource qualifies as a renewable resource if it is replenished by natural processes at a rate comparable or faster than its rate of consumption by humans or other users. Resources such as solar radiation, tides, and winds are perpetual resources that are in no danger of being used in excess of their long-term availability.

Available energy flux vs energy consumption (2004).
Available energy flux vs energy consumption (2004).

Natural resources that qualify as renewable resources include oxygen, fresh water, timber, and biomass. However they can become non-renewable resources if used at a rate greater than the environment's capacity to replenish them. For example, groundwater may be removed from an aquifer at a rate greater than the sustainable recharge. Removal of water from the pore spaces may cause permanent compaction (subsidence) that cannot be reversed. Image File history File linksMetadata Download high-resolution version (1067x702, 84 KB) Author: Frank van Mierlo Graphic representation of the available energy flux vs energy consumption. ... Image File history File linksMetadata Download high-resolution version (1067x702, 84 KB) Author: Frank van Mierlo Graphic representation of the available energy flux vs energy consumption. ... Energy consumption is a measure of the rate of energy use such as fuels or electricity. ... This article is about the chemical element and its most stable form, or dioxygen. ... For the village on the Isle of Wight, see Freshwater, Isle of Wight. ... Timber in storage for later processing at a sawmill Timber is a term used to describe wood, either standing or that has been processed for use—from the time trees are felled, to its end product as a material suitable for industrial use—as structural material for construction or wood... For the use of the term in ecology, see Biomass (ecology). ... Bold textItalic text Wyoming coal mine. ... An aquifer is an underground layer of water-bearing permeable rock or unconsolidated materials (gravel, sand, silt, or clay) from which groundwater can be usefully extracted using a water well. ... A road destroyed by subsidence and shear. ...


Renewable resources may also include commodities such as wood, paper, and leather. Furthermore, alcohol is also a renewable source of energy. Similarly, oils from plants and seeds can used as even as a substitute for non-renewable diesel. Methane is also considered as a renewable source of energy. This article does not cite any references or sources. ... Renewable energy (sources) or RES capture their energy from existing flows of energy, from on-going natural processes, such as sunshine, wind, flowing water, biological processes, and geothermal heat flows. ...


Gasoline, coal, natural gas, diesel, and other commodities derived from fossil fuels are non-renewable. Unlike fossil fuels, a renewable resource can have a sustainable yield. Petrol redirects here. ... Coal Example chemical structure of coal Coal is a fossil fuel formed in ecosystems where plant remains were saved by water and mud from oxidization and biodegradation. ... For other uses, see Natural gas (disambiguation). ... This article is about the fuel. ... Fossil fuels or mineral fuels are fossil source fuels, that is, hydrocarbons found within the top layer of the earth’s crust. ... The sustainable yield of natural capital is the ecological yield that can be extracted without reducing the base of capital itself, i. ...

Contents

Renewable energy

Main article: Renewable energy

Renewable energy effectively utilizes natural resources such as sunlight, wind, tides and geothermal heat, which are naturally replenished. ...

Solar power

Main article: solar energy

Solar power is the energy derived from the Sun. It is the most abundant source of energy on Earth. Ultraviolet image of the Sun. ... Sol redirects here. ...


Wind power

Main article: Wind power

Wind power is the conversion of wind energy into more useful forms, usually electricity using wind turbines. In 2005, worldwide capacity of wind-powered generators was 58,982 megawatts; although it currently produces less than 1% of world-wide electricity use, it accounts for approximately 23% of electricity use in Denmark, 9% in Spain, and 6% in Germany. Globally, wind power generation more than quadrupled between 1999 and 2005. An example of a wind turbine. ... Image File history File links Download high resolution version (820x362, 52 KB)Windpark in Calicia, Spain. ... Image File history File links Download high resolution version (820x362, 52 KB)Windpark in Calicia, Spain. ... A wind farm is a collection of wind turbines in the same location. ...


Most modern wind power is generated in the form of electricity by converting the rotation of turbine blades into electrical current by means of an electrical generator. In windmills (a much older technology) wind energy is used to turn mechanical machinery to do physical work, like crushing grain or pumping water. // The aerodynamics of a horizontal axis wind turbine are not straight forward. ... This article is about machines that convert wind energy into mechanical energy. ...


Wind power is used in large scale wind farms for national electrical grids as well as in small individual turbines for providing electricity to rural residences or grid-isolated locations. Wind energy is ample, renewable, widely distributed, clean, and mitigates the greenhouse effect if used to replace fossil-fuel-derived lightning. To make the power, the windmill captures the wind and spins a generator. The generator then gives off gas which then forms into electricity.


The siting of turbines has become a controversial issue amongst those concerned about the value of natural landscapes, particularly since the best sites for wind generation tend to be in scenic mountain and oceanside areas.


Hydropower

Main article: Hydropower

Hydropower is the capture of the energy of moving water for some useful purpose. Prior to the widespread availability of commercial electric power, hydropower was used for irrigation, milling of grain, textile manufacture, and the operation of sawmills. Undershot water wheels on the Orontes River in Hama, Syria Saint Anthony Falls Hydropower or hydraulic power is the force or energy of moving water. ... Irrigation is the artificial application of water to the soil usually for assisting in growing crops. ... Milling may refer to: Grinding grain and other materials in a mill Cutting and shaping materials into products with milling machines Miller Category: ... For other uses, see Textile (disambiguation). ... For the 1922 film starring Oliver Hardy, see The Sawmill. ...

A watermill in Belgium.
A watermill in Belgium.

The energy of moving water has been exploited for centuries; in Imperial Rome, water powered mills produced flour from grain, and in China and the rest of the Far East, hydraulically operated "pot wheel" pumps raised water into irrigation canals. In the 1830s, at the peak of the canal-building era, hydropower was used to transport barge traffic up and down steep hills using inclined plane railroads. Download high resolution version (2048x1536, 1423 KB) Wikipedia does not have an article with this exact name. ... Download high resolution version (2048x1536, 1423 KB) Wikipedia does not have an article with this exact name. ... Roman Empire between AD 60 and 400 with major cities. ... Watermill of Braine-le-Château, Belgium (12th century) A watermill is a structure that uses a water wheel or turbine to drive a mechanical process such as flour or lumber production, or metal shaping (rolling, grinding or wire drawing). ... An overshot water wheel standing 42 feet high powers the Old Mill at Berry College in Rome, Georgia A water wheel (also waterwheel, Norse mill, Persian wheel or noria) is a hydropower system; a system for extracting power from a flow of water. ... Duquesne Incline, Pittsburgh, Pennsylvania with full length parallel tracks A funicular, also called funicular railway or inclined railway, inclined plane, or in England a cliff railway, consists of a system of transportation in which cables attach to a tram-like vehicle on rails to move it up and down a...


Direct mechanical power transmission required that industries using hydropower had to be situated near the waterfall. For example, during the last half of the 19th century, many grist mills were built at Saint Anthony Falls, utilizing the 50 foot (15 meter) drop in the Mississippi River. The mills contributed to the growth of Minneapolis. Today the largest use of hydropower is for electric power generation, which allows low cost energy to be used at long distances from the watercourse. “Gearbox” redirects here. ... For other uses, see Waterfall (disambiguation). ... A grist mill is a place where grains are ground into flour. ... Aerial view of Saint Anthony Falls with the upper dam; there is also a lower dam. ... For the river in Canada, see Mississippi River (Ontario). ... This article is about the city in Minnesota. ...


Renewable materials

Wood and fiber products

U.S. Marihuana production permit. ... For other uses, see Bamboo (disambiguation). ... This is a disambiguation page — a navigational aid which lists other pages that might otherwise share the same title. ... For other uses, see Cotton (disambiguation). ... For other uses, see Cork. ... For other uses, see Wood (disambiguation). ... For other uses, see Papyrus (disambiguation). ...

Food products

It has been suggested that this article or section be merged with vegetable oil. ...

See also

  • Emissions & Generation Resource Integrated Database (eGRID)
  • Scarcity

The Emissions & Generation Resource Integrated Database (eGRID) is a comprehensive source of data on the environmental characteristics of almost all electric power generated in the United States. ... In economics, scarcity is defined as a condition of limited resources, where society does not have sufficient resources to produce enough to fulfill subjective wants. ...

References

  • Rincon, Paul Wind power dilemma for Lewis BBC (2006)
For other uses, see BBC (disambiguation). ...

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Renewable technologies, with their relatively high capital costs and low operating and maintenance costs, may be cost-effective in the long run, but they are less attractive to an industry facing severe near-term competitive pressure.
Renewable energy technologies are environmentally benign relative to conventional energy technologies, and they reduce the risks associated with fuel prices and availability by offering a more diverse fuel mix and by decreasing the Nation's dependence on foreign energy supplies.
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Renewable energy resource development will result in new jobs for people and less oil we have to buy from foreign countries.
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Unlike fossil fuels, which dirties the atmosphere, renewable energy has less impact on the environment Renewable energy production has some drawbacks, mainly associated with the use of large of tracts of land that affects animal habitats and outdoor scenery.
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