RENEWABLE ENERGY Renewable energy, often referred to as clean energy , comes from natural sources or processes that are constantly replenished. For example, sunlight or wind keep shining and blowing, even if their availability depends on time and weather. Types of Renewable Energy Sources (RES): Solar Power : Solar energy is a clean energy as it produces no harmful solid, liquid or gas wastes and does not create pollution. Solar power can be produced through PV cell which is made of semiconductor and Energy Collectors classified into parabolic trough, parabolic, tower and parabolic disc system etc. With 300 clear sunny days. The solar power on the surface of the earth is 10 16 W whereas the total worldwide power demand for all needs of civilization is 10 13 W. Therefore, the sun gives us 1000 times more power than we actually need. 2. Wind Power: Wind energy is turning out to be a very promising alternative energy technology o
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How Wind Turbine Works - Wind turbines work on a simple principle: instead of using electricity to make wind—like a fan—wind turbines use wind to make electricity. Wind turns the propeller-like blades of a turbine around a rotor, which spins a generator, which creates electricity. Wind is a form of solar energy caused by a combination of three concurrent events: The sun unevenly heating the atmosphere. Irregularities of the earth's surface. The rotation of the earth. Wind flow patterns and speeds vary greatly across the United States and are modified by bodies of water, vegetation, and differences in terrain. Humans use this wind flow, or motion energy, for many purposes: sailing, flying a kite, and even generating electricity. The terms "wind energy" and "wind power" both describe the process by which the wind is used to generate mechanical power or electricity. This mechanical power can be used for specific tasks (such as grindin