Solar Energy Solar

Solar energy solar panel. Solar energy is the energy gained by capturing light and heat emitted by the Sun’s solar radiation reaching the Earth can be used by the heat it produces or also through the absorption of radiation, eg optical or otherwise. It is a so-called renewable energy, particularly clean group, known as clean energy or green energy. While the end of its useful life, the PV panels can be a difficult pollutant recyclable waste today. The power of the radiation varies with time of day, weather conditions that the buffer and latitude. It can be assumed that irradiation in good value is approximately 1000 W / m on land. 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. The diffuse is issued by the daytime sky thanks to the many phenomena of solar reflection and refraction in the atmosphere, 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. The direct normal irradiance (or perpendicular to the sun) out of the atmosphere called the solar constant and has an average value of 1354 W / m (corresponding to a maximum value at perihelion, 1395 W / m and a minimum value at aphelion of 1308 W / m ). According to reports from Greenpeace, solar photovoltaic energy could provide electricity to two thirds of world population in 2030.