Power Plants

Power Plants:

power Plant, also referred to as a power station or power house and sometimes generating station or generating plant, is an industrial facility for the generation of electric power. Most power stations contain one or more generators, a rotating machine that converts mechanical power into electrical power. The relative motion between a magnetic field and a conductor creates an electrical current. The energy source harnessed to turn the generator varies widely. Most power stations in the world burn fossil fuels such as coal, oil, and natural gas to generate electricity. Others use nuclear power, but there is an increasing use of cleaner renewable sources such as solar, wind, wave and hydroelectric.

Solar Power Plant:

solar power plant is based on the conversion of sunlight into electricity, either directly using photovoltaics (PV), or indirectly using concentrated solar power (CSP). Concentrated solar power systems use lenses, mirrors, and tracking systems to focus a large area of sunlight into a small beam. Photovoltaics converts light into electric current using the photoelectric effect.[1] The largest photovoltaic power plant in the world was the 354 MW Solar Energy Generating Systems (SEGS) CSP installation located in the Mojave Desert, California. But now the largest is in india, India owns world’s largest solar power plant – Believe it or not | The Economic … Other large CSP plants include the 250 MW Agua Caliente Solar Project in Arizona., the Solnova Solar Power Station (150 MW, 250 MW when finished), and the Andasol solar power station (150 MW), both in Spain.

Concentrated solar power plants first appeared in the 1980s. Solar power is increasingly used.

Nuclear power plant:

A nuclear power station with two reactors.(Philippsburg, near Karlsruhe in Germany)

Nuclear power plant with a pressurized water reactor.

 Chernobyl Nuclear Power Plant memorial.

nuclear power plant is a type of power station that generates electricity using heat from nuclear reactions. These reactions take place within a reactor. The plant also has machines which remove heat from the reactor to operate a steam turbine and generator to make electricity. Electricity made by nuclear power plants is called nuclear power.

Nuclear power plants are usually near water to remove the heat the reactor makes. Some nuclear power plants use cooling towers to do this. Nuclear power plants use uranium as fuel. When the reactor is on, uranium atoms inside the reactor split into two smaller atoms. When uranium atoms split, they give off a large amount of heat. This splitting of atoms is called fission.

The most popular atoms to fission are uranium and plutonium. Those atoms are slightly radioactive. The atoms produced when fuel atoms break apart are strongly radioactive. Today, fission only happens in nuclear reactors. In nuclear reactors, fission only happens when the reactors parts are arranged properly. Nuclear power plants turn their reactors off when replacing old nuclear fuel with new fuel.

There are about four hundred nuclear power plants in the world, with many in the United States, France, and Japan. Some famous accidents at nuclear power plants were the 2011 Fukushima nuclear disaster in Japan, 1986 Chernobyl disaster in Ukraine, and the 1979 Three Mile Island accident in the United States. There has been a recent debate about installing a nuclear power plant within Australia many people do not want this and many do want it, its been a highly controversial debate in the country.

Solar thermal energy:

Solar thermal energy is a way of producing electricity in which the Sun’s energy is concentrated by mirrors or lenses to either heat a fluid-filled pipe or drive a Stirling engine. The oil which is hot is circulated into a water storage system where it is used to change water into superheated steam, that then turns a turbine to generate electricity. The heat that is produced through this process powers a Stirling engine. The Stirling engine provides electricity and mechanical energy by having the fluid from within a cylinder expand, which then drives a piston that turns a shaft.

Solar thermal energy is primarily used domestically for space heating, hot water, and in some cases air conditioning. Solar thermal energy is renewable and no fuels are required during the process to generate electricity or mechanical energy. It is also carbon free except for production and transportation, otherwise it is non-polluting. Solar thermal can also be combined with photovoltaics (PVs), in highly efficient cogeneration systems. Some downsides are that solar thermal generates low grade energy, installation and construction costs are very high, it is expensive compared to conventional water heaters, and is hard to compete against cheap natural gas. An example of a Solar Thermal Electric Generation Plant is the Ivanpah Solar Electric Generating System that uses 300,000 computer-controlled mirrors, that focuses sunlight to the top of 459-foot towers, where water is turned into steam to power turbines.

Wave power:

Wave power means the use of ocean surface waves and the capture of that energy to do useful work—including electricity generation, desalination, and the pumping of water (into reservoirs). It makes use of the kinetic energy of the waves that are driven by the wind.
Wave Dragon

Power from ocean surface wave motion might produce much more energy than tides. Tests have shown that it is possible to produce energy from waves, particularly in Scotland in the UK. But the technology is not as well developed as other renewable energy such as wind power or solar power.

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