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  1. Solar energy - Wikipedia › wiki › Solar_energy

    Solar energy is radiant light and heat from the Sun that is harnessed using a range of ever-evolving technologies such as solar heating, photovoltaics, solar thermal energy, solar architecture, molten salt power plants and artificial photosynthesis.

  2. Solar energy - Simple English Wikipedia, the free encyclopedia › wiki › Solar_energy
    • Energy Uses
    • Energy from The Sun
    • Types of Technologies
    • Rank
    • Other Websites

    Solar energy is used today in a number of ways: 1. As heat for making hot water, heating buildings and cooking 2. To generate electricity with solar cells or heat engines 3. To take the salt away fromsea water. 4. To use sun rays for drying clothes and towels. 5. It is used by plants for the process of photosynthesis. 6. To use in cooking (Solar cookers).

    After passing through the Earth's atmosphere, most of the Sun's energy is in the form of visible light and infrared light radiation. Plants convert the energy in sunlight into chemical energy (sugars and starches) through the process of photosynthesis. Humans regularly use this store of energy in various ways, as when they burn wood off fossil fuels, or when simply eatingplants, fish and animals. Solar radiation reaches the Earth's upper atmosphere with the power of 1366 watts per square meter (W/m2). Since the Earth is round, the surface nearer its poles is angled away from the Sun and receives much less solar energy than the surface nearer the equator. At present, solar cell panels convert, at best, about 15% of the sunlight hitting them into electricity.The dark disks in the third diagram on the right are imaginary examples of the amount of land that, if covered with 8% efficient solar panels, would produce slightly more energy in the form of electricity than the world needed in...

    Many technologies have been developed to make use of solar radiation. Some of these technologies make direct use of the solar energy (e.g. to provide light, heat, etc.), while others produce electricity.

    Solar cooker

    Solar cookinguses the Sun as the source of energy instead of standard cooking fuels such as charcoal, coal or gas. Solar cookers are an inexpensive and environmentally sound alternative to traditional ovens. They are becoming widely used in areas of the developing world where deforestation is an issue, financial resources to purchase fuel are limited, and where open flames would pose a serious risk to people and the environment. Solar cookers are covered with a glass plate. They achieve a hig...

    Solar heater

    The Sun may be used to heat water instead of electricity or gas. There are two basic types of active solar heating systems based on the type of fluid — either liquid or air — that is heated in the solar energy collectors. (The collector is the device in which a fluid is heated by the Sun.) Liquid-based systems heat water or an antifreeze solution in a "hydronic" collector, whereas air-based systems heat air in an "air collector."Both air and liquid systems can supplement forced air systems.

    Solar cells

    Solar cells can be used to generate electricity from sunlight. It is a device that converts light energy into electrical energy. Sometimes the term solar cell is reserved for devices intended specifically to capture energy from sunlight, while the term photovoltaic cellis used when the light source is unspecified. Solar cells have many applications. They have long been used in situations where electrical power from the grid is unavailable, such as in remote area power systems, Earth-orbiting...

  3. Solar power - Wikipedia › wiki › Solar_power

    This solar resource map provides a summary of the estimated solar energy available for power generation and other energy applications. It represents the average daily/yearly sum of electricity production from a 1 kW-peak grid-connected solar PV power plant covering the period from 1994/1999/2007 (depending on the geographical region) to 2015.

  4. Solar power in the United States - Wikipedia › wiki › Solar_power_in_the_United

    Solar energy deployment increased at a record pace in the United States and throughout the world in 2008, according to industry reports. The Solar Energy Industries Association's "2008 U.S. Solar Industry Year in Review" found that U.S. solar energy capacity increased by 17% in 2007, reaching the total equivalent of 8,775 megawatts (MW).

  5. Solar panel - Simple English Wikipedia, the free encyclopedia › wiki › Solar_panel
    • Heat
    • Recycling
    • Usage
    • Innovations
    • Solar Shingles

    Solar panels for heat are usually made from a box with a clear window on top. Pipes run through the box. The pipes and the box are usually painted black because black absorbs more heat than other colors. The pipes are filled with a heat transfer fluid such as water or oil. A pump circulates the fluid, which heats up as it is exposed to the sun. When the hot fluid leaves the panel, it goes into a heat exchanger, which transfers the heat into water or air. After the now cool fluid leaves the heat exchanger, it is pumped back up into the panel to collect heat again.

    Photovoltaic solar panels are built to last about thirty years. So far, most of the solar panels, originally created in the 1980's have not yet reached the end of their estimated lifespans. Many of the solar panels which have expired, however, have been classified as hazardous waste. The used solar panels that have not been considered dangerous can be recycled to create new solar panels. Over 90% of the solar panel is recyclable to create either new solar panels or scrap material. First, the panels are broken down by removing the metal frames and glass plate, leaving the group of solar cell sandwiched between an ethylene vinyl acetate (EVA)resin and back film. To actually get to the solar cells themselves, the resin and backing must be removed.

    The top ten uses for solar panels include, 1. heat for home or other building 2. power pumps 3. battery charger in the sunny day to power lightingthrough the nighttime hours 4. powering your home, camper, cabin, tool shed, or other building 5. for swimming pools, a solar water heatingsystem uses solar hot water panels. They may be put on your roof to collect the sun’s heat and bring the water to the pool. 6. Solar panels are also being used in space explorationand other forms of transportation.

    Solar panels have become much cheaper to use, compared to oil, diesel and liquified natural gas in parts of Asia. Solar energy will soon become the main source of energy. Over the years many innovations have been made to improve solar panels. Solar panels have been used for space exploration and are being developed to be able to power cars. Along with this, scientists are developing solar cells in silicone to increase its convenience.

    Solar shingles are a new type of solar panel that look like ordinary asphalt roofshingles. They are used where the appearance of traditional solar panels might be undesirable, such as on residential rooftops. Solar shingles are more expensive and less durable than normal solar panels.

  6. solar energy | National Geographic Society › encyclopedia › solar-energy

    Nov 19, 2012 · Solar energy is created by nuclear fusion that takes place in the sun. It is necessary for life on Earth, and can be harvested for human uses such as electricity.

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