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IMAGE: The installation of solar power plants in the areas marked on the map could provide some more than the energy currently consumed in the world (assuming a conversion efficiency of 8%), including from heat, electricity, fossil fuels, and so on. The colors indicate the average solar radiation between 1991 and 1993 (three years, calculated on the basis of 24 hours per day and considering the clouds observed by satellites).

Solar energy is the energy from the sun directly incident solar radiation on Earth can take advantage of its ability to heat or directly through the use of radiation in optical devices or otherwise. It is a type of renewable energy and clean, which is known as green energy.

radiation power varies by time of day, weather conditions that and latitude. One can assume that in good conditions of irradiation the value is higher than 1000 W / m² at the surface. This power is known as irradiance.

Radiation is usable in direct and diffuse components, or the sum of both. The direct radiation reaching the solar focus directly, without intermediate reflections or refractions. Fuzzy is issued by the daytime sky thanks to the multiple reflection and refraction phenomena in the solar atmosphere, in clouds and other atmospheric and terrestrial elements. Direct radiation can be reflected and concentrated for use, while it is not possible to concentrate the diffused light coming from all directions.

direct normal irradiance (or perpendicular to the sun), outside the atmosphere called the solar constant and has an average value of 1354 W / m (corresponding to a maximum value at perihelion of 1395 W / m² and a minimum value at aphelion of 1308 W / m².)

• Passive solar: Take the hot sun without mechanisms or mechanical systems.
• Solar thermal: To produce low-temperature hot water for domestic water and heating.
• Solar photovoltaics: to produce electricity, semiconductor slabs are excited by solar radiation.
• Solar thermal: to produce electricity with a conventional thermodynamic cycle, from fluid heated by the sun.
• Solar Hybrid: combines solar energy with the combustion of biomass or fossil fuels.
• Energy solar wind: Works with air heated by the sun and goes up a chimney where the generators.

Source: wikipedia.org
Picture: wikipedia.org

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Solar Energy Wind Energy



Wind energy is obtained by wind, ie using the kinetic energy generated by effect of air currents.

The wind comes from the Latin term aeolicus belonging or relating to Aeolus and Aeolus, god of the winds in Greek mythology and, therefore, belonging or related to the wind. Wind energy has been used since ancient times to move boats powered by sail or operate the mill machinery to move their blades. It is a type green energy.

currently used mainly to move turbines. These wind moves a propeller and through a mechanical system rotates the rotor of a generator, typically an alternator, which produces electricity. For installation uneconomic concentrations are usually grouped into so-called wind farms.

Although wind farms are relatively recent, starting to become popular in the decades of the 80 - 90, long the wind has been used in other applications, such as grinding grain or pumping water, just remember the famous windmills Wind already famous in the adventures of Don Quixote. ADVANTAGES


Although the amount of energy produced by this medium grows more and more in developed countries, wind energy has the following advantages:

• It is a type of renewable energy, ie, not spent or is slow little time to recreate.
• It is a clean energy that does not require combustion to produce carbon dioxide (CO2), and produces no atmospheric emissions or polluting waste.
• While not all sites can be used as the sole source of electrical energy, inclusion in an interlinked system allows, when wind conditions are suitable, save fuel in power stations and / or water in the reservoirs of hydroelectric plants.
• With integrated power systems interlinked, saves fossil fuel, or water stored in reservoirs.
• Can be placed in areas unsuitable for other purposes, such as in desert areas near the coast, arid slopes too steep to be cultivated.
• Can coexist with other land uses, such as grassland for cattle grazing or low growing crops like wheat, corn, potatoes, beets, etc..
• Since the current wind turbines are low speed, the problem of collisions with birds is shrinking.
• It creates jobs in areas that are built and assembly plants.
• Wind energy is a strong alternative to climate change because it produces no greenhouse gases.
• Installation is quick, 6 months to a year.
• Its use in combination with other types of energy, usually solar, biofeedback allows housing, ending the need to connect to grids, can achieve autonomy over the 82 hours without food from any of the 2 systems .

Source: wikipedia.org
Picture: wikipedia.org

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Tree Mission ENERGY STAR

is an initiative of the Government of the Bolivarian Republic of Venezuela aimed at active participation of the community in building a new development model that is based on the recovery, conservation and sustainable use of forests to improve their quality of life. VISION


Building in Venezuelan environmental awareness about the importance of forests, ecological balance and recovery of degraded areas due to the dominant development model, particularly those living in rural areas, with the aim of promote a new environmental ethic and improve their quality of life.


MISSION To contribute to the active participation of communities, conservationists and committees organized in cooperatives for the construction of a new development model that is based on the recovery, conservation and sustainable use of forests to improve their quality of life.


OBJECTIVES • Contribute to the restoration and maintenance of forests throughout the country through reforestation for protective purposes, and commercial-industrial agroforestry as a strategy for integrated management and sustainable use of river basins.

• Integrate in reforestation efforts being made by different organizations with the active participation of communities to achieve the breakthrough on the conservation of plant cover in the country. SPECIFIC OBJECTIVES


• Promote sustainable use of forests.
• Increasing forest area and restore the landscape.
• Conserving biodiversity.
• Ensure water production.
• Promote agroforestry systems.
• Promote new environmental ethics.

Source: marn.gob.ve /
Image: marn.gob.ve /