MAIN POWER SOURCE PRODUCTION.
ELECTRICITY. Electricity is most often generated at a power plant by ELECTRO MECHANICAL GENERATORS , primarily driven by heat engines fueled by combustion or nuclear fission but also by other means such as the kinetic energy of flowing water and wind..
WHAT ARE THE METHODS BY WHICH ELECTRICITY IS GENERATED.
HEAT. When a thermoelectric material is exposed to a temperature gradient — for example, one end is heated, while the other is cooled — electrons in that material start to flow from the hot end to the cold end, generating an electric current. The larger the temperature difference, the more electric current is produced, and the more power is generated. The amount of energy that can be generated depends on the particular transport properties of the electrons in a given material. Scientists have observed that some topological materials can be made into efficient thermoelectric devices through nano structuring, a technique scientists use to synthesize a material by patterning its features at the scale of nanometers. Scientists have thought that topological materials’ thermoelectric advantage comes from a reduced thermal conductivity in their nanostructures. But it is unclear how this enhancement in efficiency connects with the material’s inherent, topological properties. FOR EXAMPLE COAL -.
STEPS IN COAL POWERED STATION. The large chunks of coal are first crushed into a fine powder. This is called pulverization . The coal is then transported to a furnace where it is burnt. The thermal energy from the burning coal is used to boil water and generate steam . The steam pushes the blades of the turbine and so the turbine spins. The turbine is connected to the shaft of the generator which then rotates large magnets within wire coils, which generates electricity. The electric current is sent through the power lines to businesses and homes.
How does coal produce energy? | Socratic.
What is a Turbine? Turbine is a machine for producing continuous power in which a wheel or rotor, typically fitted with vanes, is made to revolve by a fast-moving flow of water, steam, gas, air, or other fluid. What is the use of a Turbine? Turbines are used in wind power, hydropower, in heat engines, and for propulsion . Turbines are extremely important because of the fact that nearly all electricity is produced by turning mechanical energy from a turbine into electrical energy via a generator. What is a Generator? A generator is a device that converts motive power into electrical power for use in an external circuit. What is a Transformer? A transformer is a passive component that transfers electrical energy from one electrical circuit to another circuit, or multiple circuits..
LIGHT. The sun's rays can be used to produce electrical energy. The direct user of sunlight is the solar cell or photovoltaic cell, which converts sunlight directly into electrical energy without the incorporation of a mechanical device. This technology is simpler than the fossil-fuel-driven systems of producing electrical energy. Let us look how.
STEPS. A solar cell is formed by a light-sensitive p-n junction semiconductor, which when exposed to sunlight is excited to conduction by the photons in light. When light, in the form of photons, hits the cell and strikes an atom, photo-ionization creates electron-hole pairs. The electrostatic field causes separation of these pairs, establishing an electromotive force in the process. The electric field sends the electron to the p-type material, and the hole to the n-type material. If an external current path is provided, electrical energy will be available to do work. The electron flow provides the current, and the cell's electric field creates the voltage. With both current and voltage the silicon cell has power. The greater the amount of light falling on the cell's surface, the greater is the probability of photons releasing electrons, and hence more electric energy is produced..
Replacing electricity with light - Tech Explorist.
CHEMICALS. Chemical energy may be released during a chemical reaction, often in the form of heat; such reactions are called exothermic. ... The chemical energy in coal is converted into electrical energy at a power plant. The chemical energy in a battery can also supply electrical power by means of electrolysis..
STEPS. When a zinc electrode and copper electrode are placed in a dilute solution of sulfuric acid, the two metals react to each other's presence within the electrolyte and develop a potential difference of about 1 volt between them. When a conducting path joins the electrodes externally, the zinc electrode dissolves slowly into the acid electrolyte, The zinc molecule goes into the electrolyte in the form of positive ions while its electrons are left on the electrode. The copper electrode on the other hand does not dissolve in the electrolyte. Instead it gives up its electrons to the positively charged ions of hydrogen in the electrolyte, turning them into molecules of hydrogen gas that bubble up around the electrode. The zinc ion combines with the sulfate ion to form zinc sulfate, and this salt falls to the bottom of the cell. The effect of all this is that the dissolving zinc electrode becomes negatively charged, the copper electrode is left with a positive charge and electrons from the zinc pass through the external circuit to the copper electrode..
MAIN POWER SOURCE IN TELANGANA. THERMAL POWER is the predominant source of power in Telangana State. There are different types of thermal power plants on the fuel used to generate the steam, such as coal, gas or diesel..
MAIN POWER SOURCE IN HARYANA. Haryana’s main Power Source is also Thermal Power. Some Power Stations in Haryana are – Rajiv Gandhi Thermal Power Station Panipat Thermal Power Station Indira Gandhi Super Thermal Power Project.